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kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, + pabeni@redhat.com, syzkaller-bugs@googlegroups.com +Content-Type: text/plain; charset="UTF-8" +Return-Path: netdev+bounces-83541-steffen.klassert=secunet.com@vger.kernel.org +X-MS-Exchange-Organization-OriginalArrivalTime: 31 Mar 2024 08:18:47.3634 + (UTC) +X-MS-Exchange-Organization-Network-Message-Id: 579d6f0d-7e40-4b9e-a848-08dc515b3047 +X-MS-Exchange-Organization-OriginalClientIPAddress: 62.96.220.37 +X-MS-Exchange-Organization-OriginalServerIPAddress: 10.53.40.202 +X-MS-Exchange-Organization-Cross-Premises-Headers-Processed: cas-essen-02.secunet.de +X-MS-Exchange-Organization-OrderedPrecisionLatencyInProgress: LSRV=cas-essen-02.secunet.de:TOTAL-FE=0.023|SMR=0.022(SMRPI=0.020(SMRPI-FrontendProxyAgent=0.020));2024-03-31T08:18:47.386Z +X-MS-Exchange-Forest-ArrivalHubServer: mbx-essen-02.secunet.de +X-MS-Exchange-Organization-AuthSource: cas-essen-02.secunet.de +X-MS-Exchange-Organization-AuthAs: Anonymous +X-MS-Exchange-Organization-FromEntityHeader: Internet +X-MS-Exchange-Organization-OriginalSize: 37015 + +Hello, + +syzbot found the following issue on: + +HEAD commit: fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel.. +git tree: upstream +console output: https://syzkaller.appspot.com/x/log.txt?x=11aa81f1180000 +kernel config: https://syzkaller.appspot.com/x/.config?x=4d90a36f0cab495a +dashboard link: https://syzkaller.appspot.com/bug?extid=e9e054e7ec32ca9f70da +compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 + +Unfortunately, I don't have any reproducer for this issue yet. + +Downloadable assets: +disk image: https://storage.googleapis.com/syzbot-assets/f6c04726a2ae/disk-fe46a7dd.raw.xz +vmlinux: https://storage.googleapis.com/syzbot-assets/09c26ce901ea/vmlinux-fe46a7dd.xz +kernel image: https://storage.googleapis.com/syzbot-assets/134acf7f5322/bzImage-fe46a7dd.xz + +IMPORTANT: if you fix the issue, please add the following tag to the commit: +Reported-by: syzbot+e9e054e7ec32ca9f70da@syzkaller.appspotmail.com + +INFO: task kworker/0:0:7 blocked for more than 143 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:kworker/0:0 state:D stack:24312 pid:7 tgid:7 ppid:2 flags:0x00004000 +Workqueue: events nfc_urelease_event_work +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +INFO: task kworker/0:1:8 blocked for more than 143 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:kworker/0:1 state:D stack:22704 pid:8 tgid:8 ppid:2 flags:0x00004000 +Workqueue: events nfc_urelease_event_work +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +INFO: task kworker/u8:1:11 blocked for more than 143 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:kworker/u8:1 state:D stack:21840 pid:11 tgid:11 ppid:2 flags:0x00004000 +Workqueue: nfc2_nci_rx_wq nci_rx_work +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + device_lock include/linux/device.h:990 [inline] + nfc_targets_found+0x26f/0x590 net/nfc/core.c:778 + nci_ntf_packet+0x4431/0x4f40 + nci_rx_work+0x14c/0x2b0 net/nfc/nci/core.c:1526 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +INFO: task kworker/0:2:927 blocked for more than 144 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:kworker/0:2 state:D stack:22128 pid:927 tgid:927 ppid:2 flags:0x00004000 +Workqueue: events nfc_urelease_event_work +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +INFO: task kworker/0:3:5072 blocked for more than 144 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:kworker/0:3 state:D stack:19728 pid:5072 tgid:5072 ppid:2 flags:0x00004000 +Workqueue: events nfc_urelease_event_work +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + nfc_urelease_event_work+0x111/0x300 net/nfc/netlink.c:1849 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +INFO: task kworker/0:8:5145 blocked for more than 144 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:kworker/0:8 state:D stack:20664 pid:5145 tgid:5145 ppid:2 flags:0x00004000 +Workqueue: events nfc_urelease_event_work +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +INFO: task syz-executor.0:7609 blocked for more than 144 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:syz-executor.0 state:D stack:24632 pid:7609 tgid:7609 ppid:5075 flags:0x00004006 +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_timeout+0xb0/0x310 kernel/time/timer.c:2548 + do_wait_for_common kernel/sched/completion.c:95 [inline] + __wait_for_common kernel/sched/completion.c:116 [inline] + wait_for_common kernel/sched/completion.c:127 [inline] + wait_for_completion+0x355/0x620 kernel/sched/completion.c:148 + __flush_workqueue+0x7d6/0x1710 kernel/workqueue.c:3994 + nci_close_device+0x193/0x610 net/nfc/nci/core.c:579 + nci_unregister_device+0x40/0x240 net/nfc/nci/core.c:1301 + virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:168 + __fput+0x429/0x8a0 fs/file_table.c:422 + __do_sys_close fs/open.c:1556 [inline] + __se_sys_close fs/open.c:1541 [inline] + __x64_sys_close+0x7f/0x110 fs/open.c:1541 + do_syscall_64+0xfb/0x240 + entry_SYSCALL_64_after_hwframe+0x6d/0x75 +RIP: 0033:0x7f772b47cc9a +RSP: 002b:00007ffe43eca810 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 +RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f772b47cc9a +RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 +RBP: 00007f772b5ad980 R08: 0000001b30620000 R09: 0000000000000046 +R10: 000000008198fad7 R11: 0000000000000293 R12: 0000000000026711 +R13: ffffffffffffffff R14: 00007f772b000000 R15: 00000000000263d0 + </TASK> +INFO: task syz-executor.0:7622 blocked for more than 145 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:syz-executor.0 state:D stack:22864 pid:7622 tgid:7609 ppid:5075 flags:0x00004006 +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + nci_request net/nfc/nci/core.c:149 [inline] + nci_start_poll+0xa30/0xf30 net/nfc/nci/core.c:854 + nfc_start_poll+0x190/0x300 net/nfc/core.c:225 + nfc_genl_start_poll+0x1eb/0x350 net/nfc/netlink.c:828 + genl_family_rcv_msg_doit net/netlink/genetlink.c:1113 [inline] + genl_family_rcv_msg net/netlink/genetlink.c:1193 [inline] + genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1208 + netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559 + genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217 + netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] + netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361 + netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905 + sock_sendmsg_nosec net/socket.c:730 [inline] + __sock_sendmsg+0x221/0x270 net/socket.c:745 + ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 + ___sys_sendmsg net/socket.c:2638 [inline] + __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 + do_syscall_64+0xfb/0x240 + entry_SYSCALL_64_after_hwframe+0x6d/0x75 +RIP: 0033:0x7f772b47dda9 +RSP: 002b:00007f772c0fe0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e +RAX: ffffffffffffffda RBX: 00007f772b5ac050 RCX: 00007f772b47dda9 +RDX: 0000000000000000 RSI: 0000000020000440 RDI: 0000000000000005 +RBP: 00007f772b4ca47a R08: 0000000000000000 R09: 0000000000000000 +R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 +R13: 000000000000006e R14: 00007f772b5ac050 R15: 00007ffe43eca748 + </TASK> +INFO: task syz-executor.2:7628 blocked for more than 145 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:syz-executor.2 state:D stack:23504 pid:7628 tgid:7627 ppid:5087 flags:0x00000006 +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + genl_lock net/netlink/genetlink.c:33 [inline] + genl_op_lock net/netlink/genetlink.c:58 [inline] + genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 + netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559 + genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217 + netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] + netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361 + netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905 + sock_sendmsg_nosec net/socket.c:730 [inline] + __sock_sendmsg+0x221/0x270 net/socket.c:745 + __sys_sendto+0x3a4/0x4f0 net/socket.c:2191 + __do_sys_sendto net/socket.c:2203 [inline] + __se_sys_sendto net/socket.c:2199 [inline] + __x64_sys_sendto+0xde/0x100 net/socket.c:2199 + do_syscall_64+0xfb/0x240 + entry_SYSCALL_64_after_hwframe+0x6d/0x75 +RIP: 0033:0x7f756ea7fa9c +RSP: 002b:00007f756f79df60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c +RAX: ffffffffffffffda RBX: 00007f756f79e050 RCX: 00007f756ea7fa9c +RDX: 0000000000000020 RSI: 00007f756f79e0a0 RDI: 0000000000000006 +RBP: 0000000000000000 R08: 00007f756f79dfb4 R09: 000000000000000c +R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000006 +R13: 00007f756f79e008 R14: 00007f756f79e0a0 R15: 0000000000000000 + </TASK> +INFO: task syz-executor.2:7631 blocked for more than 146 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:syz-executor.2 state:D stack:26136 pid:7631 tgid:7627 ppid:5087 flags:0x00004006 +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + genl_lock net/netlink/genetlink.c:33 [inline] + genl_op_lock net/netlink/genetlink.c:58 [inline] + genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 + netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559 + genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217 + netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] + netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361 + netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905 + sock_sendmsg_nosec net/socket.c:730 [inline] + __sock_sendmsg+0x221/0x270 net/socket.c:745 + __sys_sendto+0x3a4/0x4f0 net/socket.c:2191 + __do_sys_sendto net/socket.c:2203 [inline] + __se_sys_sendto net/socket.c:2199 [inline] + __x64_sys_sendto+0xde/0x100 net/socket.c:2199 + do_syscall_64+0xfb/0x240 + entry_SYSCALL_64_after_hwframe+0x6d/0x75 +RIP: 0033:0x7f756ea7fa9c +RSP: 002b:00007f756f77cf60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c +RAX: ffffffffffffffda RBX: 00007f756f77d050 RCX: 00007f756ea7fa9c +RDX: 0000000000000020 RSI: 00007f756f77d0a0 RDI: 0000000000000009 +RBP: 0000000000000000 R08: 00007f756f77cfb4 R09: 000000000000000c +R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000009 +R13: 00007f756f77d008 R14: 00007f756f77d0a0 R15: 0000000000000000 + </TASK> +Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings + +Showing all locks held in the system: +3 locks held by kworker/0:0/7: + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc900000c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc900000c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 +3 locks held by kworker/0:1/8: + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc900000d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc900000d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 +3 locks held by kworker/u8:1/11: + #0: ffff888052d01948 ((wq_completion)nfc2_nci_rx_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888052d01948 ((wq_completion)nfc2_nci_rx_wq){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc90000107d00 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc90000107d00 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] + #2: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: nfc_targets_found+0x26f/0x590 net/nfc/core.c:778 +1 lock held by khungtaskd/29: + #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] + #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] + #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 +4 locks held by kworker/u8:3/50: +7 locks held by kworker/u8:4/65: +3 locks held by kworker/0:2/927: + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc90003fcfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc90003fcfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 +2 locks held by getty/4814: + #0: ffff88802a5fd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 + #1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201 +4 locks held by kworker/0:3/5072: + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc900043ffd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc900043ffd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 + #3: ffff88806240e508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0x111/0x300 net/nfc/netlink.c:1849 +3 locks held by kworker/0:4/5088: + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc900044efd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc900044efd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 +3 locks held by kworker/0:8/5145: + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc900047d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc900047d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 +1 lock held by syz-executor.0/7609: + #0: ffff888062408350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_close_device+0x10a/0x610 net/nfc/nci/core.c:561 +5 locks held by syz-executor.0/7622: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 + #2: ffff88806240e508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_genl_start_poll+0x1de/0x350 net/nfc/netlink.c:826 + #3: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] + #3: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: nfc_start_poll+0x5a/0x300 net/nfc/core.c:208 + #4: ffff888062408350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_request net/nfc/nci/core.c:149 [inline] + #4: ffff888062408350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_start_poll+0xa30/0xf30 net/nfc/nci/core.c:854 +2 locks held by syz-executor.2/7628: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 +2 locks held by syz-executor.2/7631: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 +2 locks held by syz-executor.3/7667: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 +2 locks held by syz-executor.4/7690: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 +2 locks held by syz-executor.0/7709: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 +1 lock held by syz-executor.2/7714: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +2 locks held by syz-executor.1/7727: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 + #1: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_register_device+0x3c/0x320 net/nfc/core.c:1116 +2 locks held by syz-executor.1/7732: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 +1 lock held by syz-executor.3/7738: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.4/7742: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.1/7744: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.0/7754: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.2/7756: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.3/7758: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.4/7761: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.1/7763: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.0/7768: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.2/7769: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.3/7771: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 + +============================================= + +NMI backtrace for cpu 0 +CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 +Call Trace: + <TASK> + __dump_stack lib/dump_stack.c:88 [inline] + dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 + nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 + nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 + trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] + check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] + watchdog+0xfb0/0xff0 kernel/hung_task.c:379 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +Sending NMI from CPU 0 to CPUs 1: +NMI backtrace for cpu 1 +CPU: 1 PID: 50 Comm: kworker/u8:3 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 +Workqueue: bat_events batadv_nc_worker +RIP: 0010:__local_bh_enable_ip+0x32/0x200 kernel/softirq.c:360 +Code: 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 80 00 00 00 41 89 f7 48 89 7c 24 18 65 48 8b 04 25 28 00 00 00 48 89 44 24 60 <49> bc 00 00 00 00 00 fc ff df 48 c7 44 24 20 b3 8a b5 41 48 c7 44 +RSP: 0018:ffffc90000ba7a00 EFLAGS: 00000286 +RAX: fc790264794ab100 RBX: ffffffff8b384540 RCX: 0000000000000001 +RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff8b38434f +RBP: ffffc90000ba7ab0 R08: ffff8880219546c3 R09: 1ffff1100432a8d8 +R10: dffffc0000000000 R11: ffffed100432a8d9 R12: ffff888052ddcca0 +R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000201 +FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 +CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 +CR2: 000000c0009f3000 CR3: 000000000df32000 CR4: 00000000003506f0 +DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 +DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 +Call Trace: + <NMI> + </NMI> + <TASK> + spin_unlock_bh include/linux/spinlock.h:396 [inline] + batadv_nc_purge_paths+0x30f/0x3b0 net/batman-adv/network-coding.c:471 + batadv_nc_worker+0x365/0x610 net/batman-adv/network-coding.c:722 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> + + +--- +This report is generated by a bot. It may contain errors. +See https://goo.gl/tpsmEJ for more information about syzbot. +syzbot engineers can be reached at syzkaller@googlegroups.com. + +syzbot will keep track of this issue. 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+X-Google-Appengine-App-Id-Alias: syzkaller +Message-ID: <0000000000001a912a0614f08419@google.com> +Subject: [syzbot] [net?] [nfc?] INFO: task hung in nfc_urelease_event_work +From: syzbot <syzbot+e9e054e7ec32ca9f70da@syzkaller.appspotmail.com> +To: davem@davemloft.net, edumazet@google.com, krzysztof.kozlowski@linaro.org, + kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, + pabeni@redhat.com, syzkaller-bugs@googlegroups.com +Content-Type: text/plain; charset="UTF-8" +Return-Path: linux-kernel+bounces-125987-steffen.klassert=secunet.com@vger.kernel.org +X-MS-Exchange-Organization-OriginalArrivalTime: 31 Mar 2024 08:19:00.0351 + (UTC) +X-MS-Exchange-Organization-Network-Message-Id: 09384f5a-fec0-477d-5e15-08dc515b37d5 +X-MS-Exchange-Organization-OriginalClientIPAddress: 62.96.220.37 +X-MS-Exchange-Organization-OriginalServerIPAddress: 10.53.40.201 +X-MS-Exchange-Organization-Cross-Premises-Headers-Processed: cas-essen-01.secunet.de +X-MS-Exchange-Organization-OrderedPrecisionLatencyInProgress: LSRV=cas-essen-01.secunet.de:TOTAL-FE=0.009|SMR=0.008(SMRPI=0.005(SMRPI-FrontendProxyAgent=0.005));2024-03-31T08:19:00.044Z +X-MS-Exchange-Forest-ArrivalHubServer: mbx-essen-02.secunet.de +X-MS-Exchange-Organization-AuthSource: cas-essen-01.secunet.de +X-MS-Exchange-Organization-AuthAs: Anonymous +X-MS-Exchange-Organization-OriginalSize: 37030 +X-MS-Exchange-Organization-Transport-Properties: DeliveryPriority=Low +X-MS-Exchange-Organization-Prioritization: 2:ShadowRedundancy +X-MS-Exchange-Organization-IncludeInSla: False:ShadowRedundancy + +Hello, + +syzbot found the following issue on: + +HEAD commit: fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel.. +git tree: upstream +console output: https://syzkaller.appspot.com/x/log.txt?x=11aa81f1180000 +kernel config: https://syzkaller.appspot.com/x/.config?x=4d90a36f0cab495a +dashboard link: https://syzkaller.appspot.com/bug?extid=e9e054e7ec32ca9f70da +compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 + +Unfortunately, I don't have any reproducer for this issue yet. + +Downloadable assets: +disk image: https://storage.googleapis.com/syzbot-assets/f6c04726a2ae/disk-fe46a7dd.raw.xz +vmlinux: https://storage.googleapis.com/syzbot-assets/09c26ce901ea/vmlinux-fe46a7dd.xz +kernel image: https://storage.googleapis.com/syzbot-assets/134acf7f5322/bzImage-fe46a7dd.xz + +IMPORTANT: if you fix the issue, please add the following tag to the commit: +Reported-by: syzbot+e9e054e7ec32ca9f70da@syzkaller.appspotmail.com + +INFO: task kworker/0:0:7 blocked for more than 143 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:kworker/0:0 state:D stack:24312 pid:7 tgid:7 ppid:2 flags:0x00004000 +Workqueue: events nfc_urelease_event_work +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +INFO: task kworker/0:1:8 blocked for more than 143 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:kworker/0:1 state:D stack:22704 pid:8 tgid:8 ppid:2 flags:0x00004000 +Workqueue: events nfc_urelease_event_work +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +INFO: task kworker/u8:1:11 blocked for more than 143 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:kworker/u8:1 state:D stack:21840 pid:11 tgid:11 ppid:2 flags:0x00004000 +Workqueue: nfc2_nci_rx_wq nci_rx_work +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + device_lock include/linux/device.h:990 [inline] + nfc_targets_found+0x26f/0x590 net/nfc/core.c:778 + nci_ntf_packet+0x4431/0x4f40 + nci_rx_work+0x14c/0x2b0 net/nfc/nci/core.c:1526 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +INFO: task kworker/0:2:927 blocked for more than 144 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:kworker/0:2 state:D stack:22128 pid:927 tgid:927 ppid:2 flags:0x00004000 +Workqueue: events nfc_urelease_event_work +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +INFO: task kworker/0:3:5072 blocked for more than 144 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:kworker/0:3 state:D stack:19728 pid:5072 tgid:5072 ppid:2 flags:0x00004000 +Workqueue: events nfc_urelease_event_work +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + nfc_urelease_event_work+0x111/0x300 net/nfc/netlink.c:1849 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +INFO: task kworker/0:8:5145 blocked for more than 144 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:kworker/0:8 state:D stack:20664 pid:5145 tgid:5145 ppid:2 flags:0x00004000 +Workqueue: events nfc_urelease_event_work +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +INFO: task syz-executor.0:7609 blocked for more than 144 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:syz-executor.0 state:D stack:24632 pid:7609 tgid:7609 ppid:5075 flags:0x00004006 +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_timeout+0xb0/0x310 kernel/time/timer.c:2548 + do_wait_for_common kernel/sched/completion.c:95 [inline] + __wait_for_common kernel/sched/completion.c:116 [inline] + wait_for_common kernel/sched/completion.c:127 [inline] + wait_for_completion+0x355/0x620 kernel/sched/completion.c:148 + __flush_workqueue+0x7d6/0x1710 kernel/workqueue.c:3994 + nci_close_device+0x193/0x610 net/nfc/nci/core.c:579 + nci_unregister_device+0x40/0x240 net/nfc/nci/core.c:1301 + virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:168 + __fput+0x429/0x8a0 fs/file_table.c:422 + __do_sys_close fs/open.c:1556 [inline] + __se_sys_close fs/open.c:1541 [inline] + __x64_sys_close+0x7f/0x110 fs/open.c:1541 + do_syscall_64+0xfb/0x240 + entry_SYSCALL_64_after_hwframe+0x6d/0x75 +RIP: 0033:0x7f772b47cc9a +RSP: 002b:00007ffe43eca810 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 +RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f772b47cc9a +RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 +RBP: 00007f772b5ad980 R08: 0000001b30620000 R09: 0000000000000046 +R10: 000000008198fad7 R11: 0000000000000293 R12: 0000000000026711 +R13: ffffffffffffffff R14: 00007f772b000000 R15: 00000000000263d0 + </TASK> +INFO: task syz-executor.0:7622 blocked for more than 145 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:syz-executor.0 state:D stack:22864 pid:7622 tgid:7609 ppid:5075 flags:0x00004006 +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + nci_request net/nfc/nci/core.c:149 [inline] + nci_start_poll+0xa30/0xf30 net/nfc/nci/core.c:854 + nfc_start_poll+0x190/0x300 net/nfc/core.c:225 + nfc_genl_start_poll+0x1eb/0x350 net/nfc/netlink.c:828 + genl_family_rcv_msg_doit net/netlink/genetlink.c:1113 [inline] + genl_family_rcv_msg net/netlink/genetlink.c:1193 [inline] + genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1208 + netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559 + genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217 + netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] + netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361 + netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905 + sock_sendmsg_nosec net/socket.c:730 [inline] + __sock_sendmsg+0x221/0x270 net/socket.c:745 + ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 + ___sys_sendmsg net/socket.c:2638 [inline] + __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 + do_syscall_64+0xfb/0x240 + entry_SYSCALL_64_after_hwframe+0x6d/0x75 +RIP: 0033:0x7f772b47dda9 +RSP: 002b:00007f772c0fe0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e +RAX: ffffffffffffffda RBX: 00007f772b5ac050 RCX: 00007f772b47dda9 +RDX: 0000000000000000 RSI: 0000000020000440 RDI: 0000000000000005 +RBP: 00007f772b4ca47a R08: 0000000000000000 R09: 0000000000000000 +R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 +R13: 000000000000006e R14: 00007f772b5ac050 R15: 00007ffe43eca748 + </TASK> +INFO: task syz-executor.2:7628 blocked for more than 145 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:syz-executor.2 state:D stack:23504 pid:7628 tgid:7627 ppid:5087 flags:0x00000006 +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + genl_lock net/netlink/genetlink.c:33 [inline] + genl_op_lock net/netlink/genetlink.c:58 [inline] + genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 + netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559 + genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217 + netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] + netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361 + netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905 + sock_sendmsg_nosec net/socket.c:730 [inline] + __sock_sendmsg+0x221/0x270 net/socket.c:745 + __sys_sendto+0x3a4/0x4f0 net/socket.c:2191 + __do_sys_sendto net/socket.c:2203 [inline] + __se_sys_sendto net/socket.c:2199 [inline] + __x64_sys_sendto+0xde/0x100 net/socket.c:2199 + do_syscall_64+0xfb/0x240 + entry_SYSCALL_64_after_hwframe+0x6d/0x75 +RIP: 0033:0x7f756ea7fa9c +RSP: 002b:00007f756f79df60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c +RAX: ffffffffffffffda RBX: 00007f756f79e050 RCX: 00007f756ea7fa9c +RDX: 0000000000000020 RSI: 00007f756f79e0a0 RDI: 0000000000000006 +RBP: 0000000000000000 R08: 00007f756f79dfb4 R09: 000000000000000c +R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000006 +R13: 00007f756f79e008 R14: 00007f756f79e0a0 R15: 0000000000000000 + </TASK> +INFO: task syz-executor.2:7631 blocked for more than 146 seconds. + Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. +task:syz-executor.2 state:D stack:26136 pid:7631 tgid:7627 ppid:5087 flags:0x00004006 +Call Trace: + <TASK> + context_switch kernel/sched/core.c:5409 [inline] + __schedule+0x1781/0x49d0 kernel/sched/core.c:6736 + __schedule_loop kernel/sched/core.c:6813 [inline] + schedule+0x14b/0x320 kernel/sched/core.c:6828 + schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885 + __mutex_lock_common kernel/locking/mutex.c:684 [inline] + __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 + genl_lock net/netlink/genetlink.c:33 [inline] + genl_op_lock net/netlink/genetlink.c:58 [inline] + genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 + netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559 + genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217 + netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] + netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361 + netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905 + sock_sendmsg_nosec net/socket.c:730 [inline] + __sock_sendmsg+0x221/0x270 net/socket.c:745 + __sys_sendto+0x3a4/0x4f0 net/socket.c:2191 + __do_sys_sendto net/socket.c:2203 [inline] + __se_sys_sendto net/socket.c:2199 [inline] + __x64_sys_sendto+0xde/0x100 net/socket.c:2199 + do_syscall_64+0xfb/0x240 + entry_SYSCALL_64_after_hwframe+0x6d/0x75 +RIP: 0033:0x7f756ea7fa9c +RSP: 002b:00007f756f77cf60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c +RAX: ffffffffffffffda RBX: 00007f756f77d050 RCX: 00007f756ea7fa9c +RDX: 0000000000000020 RSI: 00007f756f77d0a0 RDI: 0000000000000009 +RBP: 0000000000000000 R08: 00007f756f77cfb4 R09: 000000000000000c +R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000009 +R13: 00007f756f77d008 R14: 00007f756f77d0a0 R15: 0000000000000000 + </TASK> +Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings + +Showing all locks held in the system: +3 locks held by kworker/0:0/7: + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc900000c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc900000c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 +3 locks held by kworker/0:1/8: + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc900000d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc900000d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 +3 locks held by kworker/u8:1/11: + #0: ffff888052d01948 ((wq_completion)nfc2_nci_rx_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888052d01948 ((wq_completion)nfc2_nci_rx_wq){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc90000107d00 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc90000107d00 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] + #2: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: nfc_targets_found+0x26f/0x590 net/nfc/core.c:778 +1 lock held by khungtaskd/29: + #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] + #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] + #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 +4 locks held by kworker/u8:3/50: +7 locks held by kworker/u8:4/65: +3 locks held by kworker/0:2/927: + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc90003fcfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc90003fcfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 +2 locks held by getty/4814: + #0: ffff88802a5fd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 + #1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201 +4 locks held by kworker/0:3/5072: + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc900043ffd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc900043ffd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 + #3: ffff88806240e508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0x111/0x300 net/nfc/netlink.c:1849 +3 locks held by kworker/0:4/5088: + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc900044efd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc900044efd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 +3 locks held by kworker/0:8/5145: + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline] + #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335 + #1: ffffc900047d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline] + #1: ffffc900047d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335 + #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843 +1 lock held by syz-executor.0/7609: + #0: ffff888062408350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_close_device+0x10a/0x610 net/nfc/nci/core.c:561 +5 locks held by syz-executor.0/7622: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 + #2: ffff88806240e508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_genl_start_poll+0x1de/0x350 net/nfc/netlink.c:826 + #3: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] + #3: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: nfc_start_poll+0x5a/0x300 net/nfc/core.c:208 + #4: ffff888062408350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_request net/nfc/nci/core.c:149 [inline] + #4: ffff888062408350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_start_poll+0xa30/0xf30 net/nfc/nci/core.c:854 +2 locks held by syz-executor.2/7628: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 +2 locks held by syz-executor.2/7631: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 +2 locks held by syz-executor.3/7667: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 +2 locks held by syz-executor.4/7690: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 +2 locks held by syz-executor.0/7709: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 +1 lock held by syz-executor.2/7714: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +2 locks held by syz-executor.1/7727: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 + #1: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_register_device+0x3c/0x320 net/nfc/core.c:1116 +2 locks held by syz-executor.1/7732: + #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216 + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline] + #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207 +1 lock held by syz-executor.3/7738: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.4/7742: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.1/7744: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.0/7754: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.2/7756: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.3/7758: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.4/7761: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.1/7763: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.0/7768: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.2/7769: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 +1 lock held by syz-executor.3/7771: + #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129 + +============================================= + +NMI backtrace for cpu 0 +CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 +Call Trace: + <TASK> + __dump_stack lib/dump_stack.c:88 [inline] + dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 + nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 + nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 + trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] + check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] + watchdog+0xfb0/0xff0 kernel/hung_task.c:379 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> +Sending NMI from CPU 0 to CPUs 1: +NMI backtrace for cpu 1 +CPU: 1 PID: 50 Comm: kworker/u8:3 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 +Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 +Workqueue: bat_events batadv_nc_worker +RIP: 0010:__local_bh_enable_ip+0x32/0x200 kernel/softirq.c:360 +Code: 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 80 00 00 00 41 89 f7 48 89 7c 24 18 65 48 8b 04 25 28 00 00 00 48 89 44 24 60 <49> bc 00 00 00 00 00 fc ff df 48 c7 44 24 20 b3 8a b5 41 48 c7 44 +RSP: 0018:ffffc90000ba7a00 EFLAGS: 00000286 +RAX: fc790264794ab100 RBX: ffffffff8b384540 RCX: 0000000000000001 +RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff8b38434f +RBP: ffffc90000ba7ab0 R08: ffff8880219546c3 R09: 1ffff1100432a8d8 +R10: dffffc0000000000 R11: ffffed100432a8d9 R12: ffff888052ddcca0 +R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000201 +FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 +CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 +CR2: 000000c0009f3000 CR3: 000000000df32000 CR4: 00000000003506f0 +DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 +DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 +Call Trace: + <NMI> + </NMI> + <TASK> + spin_unlock_bh include/linux/spinlock.h:396 [inline] + batadv_nc_purge_paths+0x30f/0x3b0 net/batman-adv/network-coding.c:471 + batadv_nc_worker+0x365/0x610 net/batman-adv/network-coding.c:722 + process_one_work kernel/workqueue.c:3254 [inline] + process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 + worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 + kthread+0x2f0/0x390 kernel/kthread.c:388 + ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 + ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 + </TASK> + + +--- +This report is generated by a bot. It may contain errors. +See https://goo.gl/tpsmEJ for more information about syzbot. +syzbot engineers can be reached at syzkaller@googlegroups.com. + +syzbot will keep track of this issue. See: +https://goo.gl/tpsmEJ#status for how to communicate with syzbot. + +If the report is already addressed, let syzbot know by replying with: +#syz fix: exact-commit-title + +If you want to overwrite report's subsystems, reply with: +#syz set subsystems: new-subsystem +(See the list of subsystem names on the web dashboard) + +If the report is a duplicate of another one, reply with: +#syz dup: exact-subject-of-another-report + +If you want to undo deduplication, reply with: +#syz undup diff --git a/a/content_digest b/N1/content_digest index 8c8cece..f885071 100644 --- a/a/content_digest +++ b/N1/content_digest @@ -1,14 +1,14 @@ "From\0syzbot <syzbot+e9e054e7ec32ca9f70da@syzkaller.appspotmail.com>\0" "Subject\0[syzbot] [net?] [nfc?] INFO: task hung in nfc_urelease_event_work\0" "Date\0Sun, 31 Mar 2024 01:18:21 -0700\0" - "To\0davem@davemloft.net" - edumazet@google.com - krzysztof.kozlowski@linaro.org - kuba@kernel.org - linux-kernel@vger.kernel.org - netdev@vger.kernel.org - pabeni@redhat.com - " syzkaller-bugs@googlegroups.com\0" + "To\0<davem@davemloft.net>" + <edumazet@google.com> + <krzysztof.kozlowski@linaro.org> + <kuba@kernel.org> + <linux-kernel@vger.kernel.org> + <netdev@vger.kernel.org> + <pabeni@redhat.com> + " <syzkaller-bugs@googlegroups.com>\0" "\00:1\0" "b\0" "Hello,\n" @@ -511,6 +511,1239 @@ "#syz dup: exact-subject-of-another-report\n" "\n" "If you want to undo deduplication, reply with:\n" + "#syz undup\n" + "\n" + "X-sender: <netdev+bounces-83541-steffen.klassert=secunet.com@vger.kernel.org>\n" + "X-Receiver: <steffen.klassert@secunet.com> ORCPT=rfc822;steffen.klassert@secunet.com\n" + "X-CreatedBy: MSExchange15\n" + "X-HeloDomain: b.mx.secunet.com\n" + "X-ExtendedProps: BQBjAAoAoXQFfe5Q3AgFAGEACAABAAAABQA3AAIAAA8APAAAAE1pY3Jvc29mdC5FeGNoYW5nZS5UcmFuc3BvcnQuTWFpbFJlY2lwaWVudC5Pcmdhbml6YXRpb25TY29wZREAAAAAAAAAAAAAAAAAAAAAAA==\n" + "X-Source: SMTP:Default MBX-ESSEN-02\n" + "X-SourceIPAddress: 62.96.220.37\n" + "X-EndOfInjectedXHeaders: 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"List-Unsubscribe: <mailto:netdev+unsubscribe@vger.kernel.org>\n" + "MIME-Version: 1.0\n" + "X-Received: by 2002:a05:6e02:3002:b0:369:6006:e148 with SMTP id\n" + " bd2-20020a056e02300200b003696006e148mr310231ilb.3.1711873101299; Sun, 31 Mar\n" + " 2024 01:18:21 -0700 (PDT)\n" + "Date: Sun, 31 Mar 2024 01:18:21 -0700\n" + "X-Google-Appengine-App-Id: s~syzkaller\n" + "X-Google-Appengine-App-Id-Alias: syzkaller\n" + "Message-ID: <0000000000001a912a0614f08419@google.com>\n" + "Subject: [syzbot] [net?] [nfc?] INFO: task hung in nfc_urelease_event_work\n" + "From: syzbot <syzbot+e9e054e7ec32ca9f70da@syzkaller.appspotmail.com>\n" + "To: davem@davemloft.net, edumazet@google.com, krzysztof.kozlowski@linaro.org, \n" + "\tkuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, \n" + "\tpabeni@redhat.com, syzkaller-bugs@googlegroups.com\n" + "Content-Type: text/plain; charset=\"UTF-8\"\n" + "Return-Path: netdev+bounces-83541-steffen.klassert=secunet.com@vger.kernel.org\n" + "X-MS-Exchange-Organization-OriginalArrivalTime: 31 Mar 2024 08:18:47.3634\n" + " (UTC)\n" + "X-MS-Exchange-Organization-Network-Message-Id: 579d6f0d-7e40-4b9e-a848-08dc515b3047\n" + "X-MS-Exchange-Organization-OriginalClientIPAddress: 62.96.220.37\n" + "X-MS-Exchange-Organization-OriginalServerIPAddress: 10.53.40.202\n" + "X-MS-Exchange-Organization-Cross-Premises-Headers-Processed: cas-essen-02.secunet.de\n" + "X-MS-Exchange-Organization-OrderedPrecisionLatencyInProgress: LSRV=cas-essen-02.secunet.de:TOTAL-FE=0.023|SMR=0.022(SMRPI=0.020(SMRPI-FrontendProxyAgent=0.020));2024-03-31T08:18:47.386Z\n" + "X-MS-Exchange-Forest-ArrivalHubServer: mbx-essen-02.secunet.de\n" + "X-MS-Exchange-Organization-AuthSource: cas-essen-02.secunet.de\n" + "X-MS-Exchange-Organization-AuthAs: Anonymous\n" + "X-MS-Exchange-Organization-FromEntityHeader: Internet\n" + "X-MS-Exchange-Organization-OriginalSize: 37015\n" + "\n" + "Hello,\n" + "\n" + "syzbot found the following issue on:\n" + "\n" + "HEAD commit: fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel..\n" + "git tree: upstream\n" + "console output: https://syzkaller.appspot.com/x/log.txt?x=11aa81f1180000\n" + "kernel config: https://syzkaller.appspot.com/x/.config?x=4d90a36f0cab495a\n" + "dashboard link: https://syzkaller.appspot.com/bug?extid=e9e054e7ec32ca9f70da\n" + "compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40\n" + "\n" + "Unfortunately, I don't have any reproducer for this issue yet.\n" + "\n" + "Downloadable assets:\n" + "disk image: https://storage.googleapis.com/syzbot-assets/f6c04726a2ae/disk-fe46a7dd.raw.xz\n" + "vmlinux: https://storage.googleapis.com/syzbot-assets/09c26ce901ea/vmlinux-fe46a7dd.xz\n" + "kernel image: https://storage.googleapis.com/syzbot-assets/134acf7f5322/bzImage-fe46a7dd.xz\n" + "\n" + "IMPORTANT: if you fix the issue, please add the following tag to the commit:\n" + "Reported-by: syzbot+e9e054e7ec32ca9f70da@syzkaller.appspotmail.com\n" + "\n" + "INFO: task kworker/0:0:7 blocked for more than 143 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:kworker/0:0 state:D stack:24312 pid:7 tgid:7 ppid:2 flags:0x00004000\n" + "Workqueue: events nfc_urelease_event_work\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "INFO: task kworker/0:1:8 blocked for more than 143 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:kworker/0:1 state:D stack:22704 pid:8 tgid:8 ppid:2 flags:0x00004000\n" + "Workqueue: events nfc_urelease_event_work\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "INFO: task kworker/u8:1:11 blocked for more than 143 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:kworker/u8:1 state:D stack:21840 pid:11 tgid:11 ppid:2 flags:0x00004000\n" + "Workqueue: nfc2_nci_rx_wq nci_rx_work\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " device_lock include/linux/device.h:990 [inline]\n" + " nfc_targets_found+0x26f/0x590 net/nfc/core.c:778\n" + " nci_ntf_packet+0x4431/0x4f40\n" + " nci_rx_work+0x14c/0x2b0 net/nfc/nci/core.c:1526\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "INFO: task kworker/0:2:927 blocked for more than 144 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:kworker/0:2 state:D stack:22128 pid:927 tgid:927 ppid:2 flags:0x00004000\n" + "Workqueue: events nfc_urelease_event_work\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "INFO: task kworker/0:3:5072 blocked for more than 144 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:kworker/0:3 state:D stack:19728 pid:5072 tgid:5072 ppid:2 flags:0x00004000\n" + "Workqueue: events nfc_urelease_event_work\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " nfc_urelease_event_work+0x111/0x300 net/nfc/netlink.c:1849\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "INFO: task kworker/0:8:5145 blocked for more than 144 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:kworker/0:8 state:D stack:20664 pid:5145 tgid:5145 ppid:2 flags:0x00004000\n" + "Workqueue: events nfc_urelease_event_work\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "INFO: task syz-executor.0:7609 blocked for more than 144 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:syz-executor.0 state:D stack:24632 pid:7609 tgid:7609 ppid:5075 flags:0x00004006\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_timeout+0xb0/0x310 kernel/time/timer.c:2548\n" + " do_wait_for_common kernel/sched/completion.c:95 [inline]\n" + " __wait_for_common kernel/sched/completion.c:116 [inline]\n" + " wait_for_common kernel/sched/completion.c:127 [inline]\n" + " wait_for_completion+0x355/0x620 kernel/sched/completion.c:148\n" + " __flush_workqueue+0x7d6/0x1710 kernel/workqueue.c:3994\n" + " nci_close_device+0x193/0x610 net/nfc/nci/core.c:579\n" + " nci_unregister_device+0x40/0x240 net/nfc/nci/core.c:1301\n" + " virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:168\n" + " __fput+0x429/0x8a0 fs/file_table.c:422\n" + " __do_sys_close fs/open.c:1556 [inline]\n" + " __se_sys_close fs/open.c:1541 [inline]\n" + " __x64_sys_close+0x7f/0x110 fs/open.c:1541\n" + " do_syscall_64+0xfb/0x240\n" + " entry_SYSCALL_64_after_hwframe+0x6d/0x75\n" + "RIP: 0033:0x7f772b47cc9a\n" + "RSP: 002b:00007ffe43eca810 EFLAGS: 00000293 ORIG_RAX: 0000000000000003\n" + "RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f772b47cc9a\n" + "RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003\n" + "RBP: 00007f772b5ad980 R08: 0000001b30620000 R09: 0000000000000046\n" + "R10: 000000008198fad7 R11: 0000000000000293 R12: 0000000000026711\n" + "R13: ffffffffffffffff R14: 00007f772b000000 R15: 00000000000263d0\n" + " </TASK>\n" + "INFO: task syz-executor.0:7622 blocked for more than 145 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:syz-executor.0 state:D stack:22864 pid:7622 tgid:7609 ppid:5075 flags:0x00004006\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " nci_request net/nfc/nci/core.c:149 [inline]\n" + " nci_start_poll+0xa30/0xf30 net/nfc/nci/core.c:854\n" + " nfc_start_poll+0x190/0x300 net/nfc/core.c:225\n" + " nfc_genl_start_poll+0x1eb/0x350 net/nfc/netlink.c:828\n" + " genl_family_rcv_msg_doit net/netlink/genetlink.c:1113 [inline]\n" + " genl_family_rcv_msg net/netlink/genetlink.c:1193 [inline]\n" + " genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1208\n" + " netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559\n" + " genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217\n" + " netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]\n" + " netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361\n" + " netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905\n" + " sock_sendmsg_nosec net/socket.c:730 [inline]\n" + " __sock_sendmsg+0x221/0x270 net/socket.c:745\n" + " ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\n" + " ___sys_sendmsg net/socket.c:2638 [inline]\n" + " __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\n" + " do_syscall_64+0xfb/0x240\n" + " entry_SYSCALL_64_after_hwframe+0x6d/0x75\n" + "RIP: 0033:0x7f772b47dda9\n" + "RSP: 002b:00007f772c0fe0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\n" + "RAX: ffffffffffffffda RBX: 00007f772b5ac050 RCX: 00007f772b47dda9\n" + "RDX: 0000000000000000 RSI: 0000000020000440 RDI: 0000000000000005\n" + "RBP: 00007f772b4ca47a R08: 0000000000000000 R09: 0000000000000000\n" + "R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\n" + "R13: 000000000000006e R14: 00007f772b5ac050 R15: 00007ffe43eca748\n" + " </TASK>\n" + "INFO: task syz-executor.2:7628 blocked for more than 145 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:syz-executor.2 state:D stack:23504 pid:7628 tgid:7627 ppid:5087 flags:0x00000006\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " genl_lock net/netlink/genetlink.c:33 [inline]\n" + " genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + " netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559\n" + " genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217\n" + " netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]\n" + " netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361\n" + " netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905\n" + " sock_sendmsg_nosec net/socket.c:730 [inline]\n" + " __sock_sendmsg+0x221/0x270 net/socket.c:745\n" + " __sys_sendto+0x3a4/0x4f0 net/socket.c:2191\n" + " __do_sys_sendto net/socket.c:2203 [inline]\n" + " __se_sys_sendto net/socket.c:2199 [inline]\n" + " __x64_sys_sendto+0xde/0x100 net/socket.c:2199\n" + " do_syscall_64+0xfb/0x240\n" + " entry_SYSCALL_64_after_hwframe+0x6d/0x75\n" + "RIP: 0033:0x7f756ea7fa9c\n" + "RSP: 002b:00007f756f79df60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c\n" + "RAX: ffffffffffffffda RBX: 00007f756f79e050 RCX: 00007f756ea7fa9c\n" + "RDX: 0000000000000020 RSI: 00007f756f79e0a0 RDI: 0000000000000006\n" + "RBP: 0000000000000000 R08: 00007f756f79dfb4 R09: 000000000000000c\n" + "R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000006\n" + "R13: 00007f756f79e008 R14: 00007f756f79e0a0 R15: 0000000000000000\n" + " </TASK>\n" + "INFO: task syz-executor.2:7631 blocked for more than 146 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:syz-executor.2 state:D stack:26136 pid:7631 tgid:7627 ppid:5087 flags:0x00004006\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " genl_lock net/netlink/genetlink.c:33 [inline]\n" + " genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + " netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559\n" + " genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217\n" + " netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]\n" + " netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361\n" + " netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905\n" + " sock_sendmsg_nosec net/socket.c:730 [inline]\n" + " __sock_sendmsg+0x221/0x270 net/socket.c:745\n" + " __sys_sendto+0x3a4/0x4f0 net/socket.c:2191\n" + " __do_sys_sendto net/socket.c:2203 [inline]\n" + " __se_sys_sendto net/socket.c:2199 [inline]\n" + " __x64_sys_sendto+0xde/0x100 net/socket.c:2199\n" + " do_syscall_64+0xfb/0x240\n" + " entry_SYSCALL_64_after_hwframe+0x6d/0x75\n" + "RIP: 0033:0x7f756ea7fa9c\n" + "RSP: 002b:00007f756f77cf60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c\n" + "RAX: ffffffffffffffda RBX: 00007f756f77d050 RCX: 00007f756ea7fa9c\n" + "RDX: 0000000000000020 RSI: 00007f756f77d0a0 RDI: 0000000000000009\n" + "RBP: 0000000000000000 R08: 00007f756f77cfb4 R09: 000000000000000c\n" + "R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000009\n" + "R13: 00007f756f77d008 R14: 00007f756f77d0a0 R15: 0000000000000000\n" + " </TASK>\n" + "Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings\n" + "\n" + "Showing all locks held in the system:\n" + "3 locks held by kworker/0:0/7:\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc900000c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc900000c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + "3 locks held by kworker/0:1/8:\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc900000d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc900000d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + "3 locks held by kworker/u8:1/11:\n" + " #0: ffff888052d01948 ((wq_completion)nfc2_nci_rx_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888052d01948 ((wq_completion)nfc2_nci_rx_wq){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc90000107d00 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc90000107d00 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]\n" + " #2: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: nfc_targets_found+0x26f/0x590 net/nfc/core.c:778\n" + "1 lock held by khungtaskd/29:\n" + " #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]\n" + " #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]\n" + " #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614\n" + "4 locks held by kworker/u8:3/50:\n" + "7 locks held by kworker/u8:4/65:\n" + "3 locks held by kworker/0:2/927:\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc90003fcfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc90003fcfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + "2 locks held by getty/4814:\n" + " #0: ffff88802a5fd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243\n" + " #1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201\n" + "4 locks held by kworker/0:3/5072:\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc900043ffd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc900043ffd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + " #3: ffff88806240e508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0x111/0x300 net/nfc/netlink.c:1849\n" + "3 locks held by kworker/0:4/5088:\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc900044efd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc900044efd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + "3 locks held by kworker/0:8/5145:\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc900047d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc900047d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + "1 lock held by syz-executor.0/7609:\n" + " #0: ffff888062408350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_close_device+0x10a/0x610 net/nfc/nci/core.c:561\n" + "5 locks held by syz-executor.0/7622:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + " #2: ffff88806240e508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_genl_start_poll+0x1de/0x350 net/nfc/netlink.c:826\n" + " #3: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]\n" + " #3: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: nfc_start_poll+0x5a/0x300 net/nfc/core.c:208\n" + " #4: ffff888062408350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_request net/nfc/nci/core.c:149 [inline]\n" + " #4: ffff888062408350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_start_poll+0xa30/0xf30 net/nfc/nci/core.c:854\n" + "2 locks held by syz-executor.2/7628:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + "2 locks held by syz-executor.2/7631:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + "2 locks held by syz-executor.3/7667:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + "2 locks held by syz-executor.4/7690:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + "2 locks held by syz-executor.0/7709:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + "1 lock held by syz-executor.2/7714:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "2 locks held by syz-executor.1/7727:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + " #1: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_register_device+0x3c/0x320 net/nfc/core.c:1116\n" + "2 locks held by syz-executor.1/7732:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + "1 lock held by syz-executor.3/7738:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.4/7742:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.1/7744:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.0/7754:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.2/7756:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.3/7758:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.4/7761:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.1/7763:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.0/7768:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.2/7769:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.3/7771:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "\n" + "=============================================\n" + "\n" + "NMI backtrace for cpu 0\n" + "CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\n" + "Call Trace:\n" + " <TASK>\n" + " __dump_stack lib/dump_stack.c:88 [inline]\n" + " dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114\n" + " nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113\n" + " nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62\n" + " trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]\n" + " check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]\n" + " watchdog+0xfb0/0xff0 kernel/hung_task.c:379\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "Sending NMI from CPU 0 to CPUs 1:\n" + "NMI backtrace for cpu 1\n" + "CPU: 1 PID: 50 Comm: kworker/u8:3 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\n" + "Workqueue: bat_events batadv_nc_worker\n" + "RIP: 0010:__local_bh_enable_ip+0x32/0x200 kernel/softirq.c:360\n" + "Code: 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 80 00 00 00 41 89 f7 48 89 7c 24 18 65 48 8b 04 25 28 00 00 00 48 89 44 24 60 <49> bc 00 00 00 00 00 fc ff df 48 c7 44 24 20 b3 8a b5 41 48 c7 44\n" + "RSP: 0018:ffffc90000ba7a00 EFLAGS: 00000286\n" + "RAX: fc790264794ab100 RBX: ffffffff8b384540 RCX: 0000000000000001\n" + "RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff8b38434f\n" + "RBP: ffffc90000ba7ab0 R08: ffff8880219546c3 R09: 1ffff1100432a8d8\n" + "R10: dffffc0000000000 R11: ffffed100432a8d9 R12: ffff888052ddcca0\n" + "R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000201\n" + "FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000\n" + "CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n" + "CR2: 000000c0009f3000 CR3: 000000000df32000 CR4: 00000000003506f0\n" + "DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n" + "DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n" + "Call Trace:\n" + " <NMI>\n" + " </NMI>\n" + " <TASK>\n" + " spin_unlock_bh include/linux/spinlock.h:396 [inline]\n" + " batadv_nc_purge_paths+0x30f/0x3b0 net/batman-adv/network-coding.c:471\n" + " batadv_nc_worker+0x365/0x610 net/batman-adv/network-coding.c:722\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "\n" + "\n" + "---\n" + "This report is generated by a bot. It may contain errors.\n" + "See https://goo.gl/tpsmEJ for more information about syzbot.\n" + "syzbot engineers can be reached at syzkaller@googlegroups.com.\n" + "\n" + "syzbot will keep track of this issue. See:\n" + "https://goo.gl/tpsmEJ#status for how to communicate with syzbot.\n" + "\n" + "If the report is already addressed, let syzbot know by replying with:\n" + "#syz fix: exact-commit-title\n" + "\n" + "If you want to overwrite report's subsystems, reply with:\n" + "#syz set subsystems: new-subsystem\n" + "(See the list of subsystem names on the web dashboard)\n" + "\n" + "If the report is a duplicate of another one, reply with:\n" + "#syz dup: exact-subject-of-another-report\n" + "\n" + "If you want to undo deduplication, reply with:\n" + "#syz undup\n" + "\n" + "X-sender: <linux-kernel+bounces-125987-steffen.klassert=secunet.com@vger.kernel.org>\n" + "X-Receiver: <steffen.klassert@secunet.com> ORCPT=rfc822;steffen.klassert@secunet.com\n" + "X-CreatedBy: MSExchange15\n" + "X-HeloDomain: mbx-essen-01.secunet.de\n" + "X-ExtendedProps: 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<syzbot+e9e054e7ec32ca9f70da@syzkaller.appspotmail.com>\n" + "To: davem@davemloft.net, edumazet@google.com, krzysztof.kozlowski@linaro.org, \n" + "\tkuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, \n" + "\tpabeni@redhat.com, syzkaller-bugs@googlegroups.com\n" + "Content-Type: text/plain; charset=\"UTF-8\"\n" + "Return-Path: linux-kernel+bounces-125987-steffen.klassert=secunet.com@vger.kernel.org\n" + "X-MS-Exchange-Organization-OriginalArrivalTime: 31 Mar 2024 08:19:00.0351\n" + " (UTC)\n" + "X-MS-Exchange-Organization-Network-Message-Id: 09384f5a-fec0-477d-5e15-08dc515b37d5\n" + "X-MS-Exchange-Organization-OriginalClientIPAddress: 62.96.220.37\n" + "X-MS-Exchange-Organization-OriginalServerIPAddress: 10.53.40.201\n" + "X-MS-Exchange-Organization-Cross-Premises-Headers-Processed: cas-essen-01.secunet.de\n" + "X-MS-Exchange-Organization-OrderedPrecisionLatencyInProgress: LSRV=cas-essen-01.secunet.de:TOTAL-FE=0.009|SMR=0.008(SMRPI=0.005(SMRPI-FrontendProxyAgent=0.005));2024-03-31T08:19:00.044Z\n" + "X-MS-Exchange-Forest-ArrivalHubServer: mbx-essen-02.secunet.de\n" + "X-MS-Exchange-Organization-AuthSource: cas-essen-01.secunet.de\n" + "X-MS-Exchange-Organization-AuthAs: Anonymous\n" + "X-MS-Exchange-Organization-OriginalSize: 37030\n" + "X-MS-Exchange-Organization-Transport-Properties: DeliveryPriority=Low\n" + "X-MS-Exchange-Organization-Prioritization: 2:ShadowRedundancy\n" + "X-MS-Exchange-Organization-IncludeInSla: False:ShadowRedundancy\n" + "\n" + "Hello,\n" + "\n" + "syzbot found the following issue on:\n" + "\n" + "HEAD commit: fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel..\n" + "git tree: upstream\n" + "console output: https://syzkaller.appspot.com/x/log.txt?x=11aa81f1180000\n" + "kernel config: https://syzkaller.appspot.com/x/.config?x=4d90a36f0cab495a\n" + "dashboard link: https://syzkaller.appspot.com/bug?extid=e9e054e7ec32ca9f70da\n" + "compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40\n" + "\n" + "Unfortunately, I don't have any reproducer for this issue yet.\n" + "\n" + "Downloadable assets:\n" + "disk image: https://storage.googleapis.com/syzbot-assets/f6c04726a2ae/disk-fe46a7dd.raw.xz\n" + "vmlinux: https://storage.googleapis.com/syzbot-assets/09c26ce901ea/vmlinux-fe46a7dd.xz\n" + "kernel image: https://storage.googleapis.com/syzbot-assets/134acf7f5322/bzImage-fe46a7dd.xz\n" + "\n" + "IMPORTANT: if you fix the issue, please add the following tag to the commit:\n" + "Reported-by: syzbot+e9e054e7ec32ca9f70da@syzkaller.appspotmail.com\n" + "\n" + "INFO: task kworker/0:0:7 blocked for more than 143 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:kworker/0:0 state:D stack:24312 pid:7 tgid:7 ppid:2 flags:0x00004000\n" + "Workqueue: events nfc_urelease_event_work\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "INFO: task kworker/0:1:8 blocked for more than 143 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:kworker/0:1 state:D stack:22704 pid:8 tgid:8 ppid:2 flags:0x00004000\n" + "Workqueue: events nfc_urelease_event_work\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "INFO: task kworker/u8:1:11 blocked for more than 143 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:kworker/u8:1 state:D stack:21840 pid:11 tgid:11 ppid:2 flags:0x00004000\n" + "Workqueue: nfc2_nci_rx_wq nci_rx_work\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " device_lock include/linux/device.h:990 [inline]\n" + " nfc_targets_found+0x26f/0x590 net/nfc/core.c:778\n" + " nci_ntf_packet+0x4431/0x4f40\n" + " nci_rx_work+0x14c/0x2b0 net/nfc/nci/core.c:1526\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "INFO: task kworker/0:2:927 blocked for more than 144 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:kworker/0:2 state:D stack:22128 pid:927 tgid:927 ppid:2 flags:0x00004000\n" + "Workqueue: events nfc_urelease_event_work\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "INFO: task kworker/0:3:5072 blocked for more than 144 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:kworker/0:3 state:D stack:19728 pid:5072 tgid:5072 ppid:2 flags:0x00004000\n" + "Workqueue: events nfc_urelease_event_work\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " nfc_urelease_event_work+0x111/0x300 net/nfc/netlink.c:1849\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "INFO: task kworker/0:8:5145 blocked for more than 144 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:kworker/0:8 state:D stack:20664 pid:5145 tgid:5145 ppid:2 flags:0x00004000\n" + "Workqueue: events nfc_urelease_event_work\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "INFO: task syz-executor.0:7609 blocked for more than 144 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:syz-executor.0 state:D stack:24632 pid:7609 tgid:7609 ppid:5075 flags:0x00004006\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_timeout+0xb0/0x310 kernel/time/timer.c:2548\n" + " do_wait_for_common kernel/sched/completion.c:95 [inline]\n" + " __wait_for_common kernel/sched/completion.c:116 [inline]\n" + " wait_for_common kernel/sched/completion.c:127 [inline]\n" + " wait_for_completion+0x355/0x620 kernel/sched/completion.c:148\n" + " __flush_workqueue+0x7d6/0x1710 kernel/workqueue.c:3994\n" + " nci_close_device+0x193/0x610 net/nfc/nci/core.c:579\n" + " nci_unregister_device+0x40/0x240 net/nfc/nci/core.c:1301\n" + " virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:168\n" + " __fput+0x429/0x8a0 fs/file_table.c:422\n" + " __do_sys_close fs/open.c:1556 [inline]\n" + " __se_sys_close fs/open.c:1541 [inline]\n" + " __x64_sys_close+0x7f/0x110 fs/open.c:1541\n" + " do_syscall_64+0xfb/0x240\n" + " entry_SYSCALL_64_after_hwframe+0x6d/0x75\n" + "RIP: 0033:0x7f772b47cc9a\n" + "RSP: 002b:00007ffe43eca810 EFLAGS: 00000293 ORIG_RAX: 0000000000000003\n" + "RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f772b47cc9a\n" + "RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003\n" + "RBP: 00007f772b5ad980 R08: 0000001b30620000 R09: 0000000000000046\n" + "R10: 000000008198fad7 R11: 0000000000000293 R12: 0000000000026711\n" + "R13: ffffffffffffffff R14: 00007f772b000000 R15: 00000000000263d0\n" + " </TASK>\n" + "INFO: task syz-executor.0:7622 blocked for more than 145 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:syz-executor.0 state:D stack:22864 pid:7622 tgid:7609 ppid:5075 flags:0x00004006\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " nci_request net/nfc/nci/core.c:149 [inline]\n" + " nci_start_poll+0xa30/0xf30 net/nfc/nci/core.c:854\n" + " nfc_start_poll+0x190/0x300 net/nfc/core.c:225\n" + " nfc_genl_start_poll+0x1eb/0x350 net/nfc/netlink.c:828\n" + " genl_family_rcv_msg_doit net/netlink/genetlink.c:1113 [inline]\n" + " genl_family_rcv_msg net/netlink/genetlink.c:1193 [inline]\n" + " genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1208\n" + " netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559\n" + " genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217\n" + " netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]\n" + " netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361\n" + " netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905\n" + " sock_sendmsg_nosec net/socket.c:730 [inline]\n" + " __sock_sendmsg+0x221/0x270 net/socket.c:745\n" + " ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\n" + " ___sys_sendmsg net/socket.c:2638 [inline]\n" + " __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\n" + " do_syscall_64+0xfb/0x240\n" + " entry_SYSCALL_64_after_hwframe+0x6d/0x75\n" + "RIP: 0033:0x7f772b47dda9\n" + "RSP: 002b:00007f772c0fe0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\n" + "RAX: ffffffffffffffda RBX: 00007f772b5ac050 RCX: 00007f772b47dda9\n" + "RDX: 0000000000000000 RSI: 0000000020000440 RDI: 0000000000000005\n" + "RBP: 00007f772b4ca47a R08: 0000000000000000 R09: 0000000000000000\n" + "R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\n" + "R13: 000000000000006e R14: 00007f772b5ac050 R15: 00007ffe43eca748\n" + " </TASK>\n" + "INFO: task syz-executor.2:7628 blocked for more than 145 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:syz-executor.2 state:D stack:23504 pid:7628 tgid:7627 ppid:5087 flags:0x00000006\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " genl_lock net/netlink/genetlink.c:33 [inline]\n" + " genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + " netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559\n" + " genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217\n" + " netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]\n" + " netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361\n" + " netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905\n" + " sock_sendmsg_nosec net/socket.c:730 [inline]\n" + " __sock_sendmsg+0x221/0x270 net/socket.c:745\n" + " __sys_sendto+0x3a4/0x4f0 net/socket.c:2191\n" + " __do_sys_sendto net/socket.c:2203 [inline]\n" + " __se_sys_sendto net/socket.c:2199 [inline]\n" + " __x64_sys_sendto+0xde/0x100 net/socket.c:2199\n" + " do_syscall_64+0xfb/0x240\n" + " entry_SYSCALL_64_after_hwframe+0x6d/0x75\n" + "RIP: 0033:0x7f756ea7fa9c\n" + "RSP: 002b:00007f756f79df60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c\n" + "RAX: ffffffffffffffda RBX: 00007f756f79e050 RCX: 00007f756ea7fa9c\n" + "RDX: 0000000000000020 RSI: 00007f756f79e0a0 RDI: 0000000000000006\n" + "RBP: 0000000000000000 R08: 00007f756f79dfb4 R09: 000000000000000c\n" + "R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000006\n" + "R13: 00007f756f79e008 R14: 00007f756f79e0a0 R15: 0000000000000000\n" + " </TASK>\n" + "INFO: task syz-executor.2:7631 blocked for more than 146 seconds.\n" + " Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n" + "task:syz-executor.2 state:D stack:26136 pid:7631 tgid:7627 ppid:5087 flags:0x00004006\n" + "Call Trace:\n" + " <TASK>\n" + " context_switch kernel/sched/core.c:5409 [inline]\n" + " __schedule+0x1781/0x49d0 kernel/sched/core.c:6736\n" + " __schedule_loop kernel/sched/core.c:6813 [inline]\n" + " schedule+0x14b/0x320 kernel/sched/core.c:6828\n" + " schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885\n" + " __mutex_lock_common kernel/locking/mutex.c:684 [inline]\n" + " __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752\n" + " genl_lock net/netlink/genetlink.c:33 [inline]\n" + " genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + " netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559\n" + " genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217\n" + " netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]\n" + " netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361\n" + " netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905\n" + " sock_sendmsg_nosec net/socket.c:730 [inline]\n" + " __sock_sendmsg+0x221/0x270 net/socket.c:745\n" + " __sys_sendto+0x3a4/0x4f0 net/socket.c:2191\n" + " __do_sys_sendto net/socket.c:2203 [inline]\n" + " __se_sys_sendto net/socket.c:2199 [inline]\n" + " __x64_sys_sendto+0xde/0x100 net/socket.c:2199\n" + " do_syscall_64+0xfb/0x240\n" + " entry_SYSCALL_64_after_hwframe+0x6d/0x75\n" + "RIP: 0033:0x7f756ea7fa9c\n" + "RSP: 002b:00007f756f77cf60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c\n" + "RAX: ffffffffffffffda RBX: 00007f756f77d050 RCX: 00007f756ea7fa9c\n" + "RDX: 0000000000000020 RSI: 00007f756f77d0a0 RDI: 0000000000000009\n" + "RBP: 0000000000000000 R08: 00007f756f77cfb4 R09: 000000000000000c\n" + "R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000009\n" + "R13: 00007f756f77d008 R14: 00007f756f77d0a0 R15: 0000000000000000\n" + " </TASK>\n" + "Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings\n" + "\n" + "Showing all locks held in the system:\n" + "3 locks held by kworker/0:0/7:\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc900000c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc900000c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + "3 locks held by kworker/0:1/8:\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc900000d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc900000d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + "3 locks held by kworker/u8:1/11:\n" + " #0: ffff888052d01948 ((wq_completion)nfc2_nci_rx_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888052d01948 ((wq_completion)nfc2_nci_rx_wq){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc90000107d00 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc90000107d00 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]\n" + " #2: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: nfc_targets_found+0x26f/0x590 net/nfc/core.c:778\n" + "1 lock held by khungtaskd/29:\n" + " #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]\n" + " #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]\n" + " #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614\n" + "4 locks held by kworker/u8:3/50:\n" + "7 locks held by kworker/u8:4/65:\n" + "3 locks held by kworker/0:2/927:\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc90003fcfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc90003fcfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + "2 locks held by getty/4814:\n" + " #0: ffff88802a5fd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243\n" + " #1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201\n" + "4 locks held by kworker/0:3/5072:\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc900043ffd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc900043ffd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + " #3: ffff88806240e508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0x111/0x300 net/nfc/netlink.c:1849\n" + "3 locks held by kworker/0:4/5088:\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc900044efd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc900044efd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + "3 locks held by kworker/0:8/5145:\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]\n" + " #0: ffff888014c78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335\n" + " #1: ffffc900047d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]\n" + " #1: ffffc900047d7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335\n" + " #2: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843\n" + "1 lock held by syz-executor.0/7609:\n" + " #0: ffff888062408350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_close_device+0x10a/0x610 net/nfc/nci/core.c:561\n" + "5 locks held by syz-executor.0/7622:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + " #2: ffff88806240e508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_genl_start_poll+0x1de/0x350 net/nfc/netlink.c:826\n" + " #3: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]\n" + " #3: ffff88806240e100 (&dev->mutex){....}-{3:3}, at: nfc_start_poll+0x5a/0x300 net/nfc/core.c:208\n" + " #4: ffff888062408350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_request net/nfc/nci/core.c:149 [inline]\n" + " #4: ffff888062408350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_start_poll+0xa30/0xf30 net/nfc/nci/core.c:854\n" + "2 locks held by syz-executor.2/7628:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + "2 locks held by syz-executor.2/7631:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + "2 locks held by syz-executor.3/7667:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + "2 locks held by syz-executor.4/7690:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + "2 locks held by syz-executor.0/7709:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + "1 lock held by syz-executor.2/7714:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "2 locks held by syz-executor.1/7727:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + " #1: ffffffff8f698c08 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_register_device+0x3c/0x320 net/nfc/core.c:1116\n" + "2 locks held by syz-executor.1/7732:\n" + " #0: ffffffff8f3e0130 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]\n" + " #1: ffffffff8f3dffe8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1207\n" + "1 lock held by syz-executor.3/7738:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.4/7742:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.1/7744:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.0/7754:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.2/7756:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.3/7758:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.4/7761:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.1/7763:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.0/7768:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.2/7769:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "1 lock held by syz-executor.3/7771:\n" + " #0: ffffffff8e8f39c8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x390 drivers/char/misc.c:129\n" + "\n" + "=============================================\n" + "\n" + "NMI backtrace for cpu 0\n" + "CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\n" + "Call Trace:\n" + " <TASK>\n" + " __dump_stack lib/dump_stack.c:88 [inline]\n" + " dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114\n" + " nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113\n" + " nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62\n" + " trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]\n" + " check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]\n" + " watchdog+0xfb0/0xff0 kernel/hung_task.c:379\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "Sending NMI from CPU 0 to CPUs 1:\n" + "NMI backtrace for cpu 1\n" + "CPU: 1 PID: 50 Comm: kworker/u8:3 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0\n" + "Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\n" + "Workqueue: bat_events batadv_nc_worker\n" + "RIP: 0010:__local_bh_enable_ip+0x32/0x200 kernel/softirq.c:360\n" + "Code: 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 80 00 00 00 41 89 f7 48 89 7c 24 18 65 48 8b 04 25 28 00 00 00 48 89 44 24 60 <49> bc 00 00 00 00 00 fc ff df 48 c7 44 24 20 b3 8a b5 41 48 c7 44\n" + "RSP: 0018:ffffc90000ba7a00 EFLAGS: 00000286\n" + "RAX: fc790264794ab100 RBX: ffffffff8b384540 RCX: 0000000000000001\n" + "RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff8b38434f\n" + "RBP: ffffc90000ba7ab0 R08: ffff8880219546c3 R09: 1ffff1100432a8d8\n" + "R10: dffffc0000000000 R11: ffffed100432a8d9 R12: ffff888052ddcca0\n" + "R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000201\n" + "FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000\n" + "CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n" + "CR2: 000000c0009f3000 CR3: 000000000df32000 CR4: 00000000003506f0\n" + "DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n" + "DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n" + "Call Trace:\n" + " <NMI>\n" + " </NMI>\n" + " <TASK>\n" + " spin_unlock_bh include/linux/spinlock.h:396 [inline]\n" + " batadv_nc_purge_paths+0x30f/0x3b0 net/batman-adv/network-coding.c:471\n" + " batadv_nc_worker+0x365/0x610 net/batman-adv/network-coding.c:722\n" + " process_one_work kernel/workqueue.c:3254 [inline]\n" + " process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335\n" + " worker_thread+0x86d/0xd70 kernel/workqueue.c:3416\n" + " kthread+0x2f0/0x390 kernel/kthread.c:388\n" + " ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n" + " ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243\n" + " </TASK>\n" + "\n" + "\n" + "---\n" + "This report is generated by a bot. It may contain errors.\n" + "See https://goo.gl/tpsmEJ for more information about syzbot.\n" + "syzbot engineers can be reached at syzkaller@googlegroups.com.\n" + "\n" + "syzbot will keep track of this issue. See:\n" + "https://goo.gl/tpsmEJ#status for how to communicate with syzbot.\n" + "\n" + "If the report is already addressed, let syzbot know by replying with:\n" + "#syz fix: exact-commit-title\n" + "\n" + "If you want to overwrite report's subsystems, reply with:\n" + "#syz set subsystems: new-subsystem\n" + "(See the list of subsystem names on the web dashboard)\n" + "\n" + "If the report is a duplicate of another one, reply with:\n" + "#syz dup: exact-subject-of-another-report\n" + "\n" + "If you want to undo deduplication, reply with:\n" #syz undup -a5bc8f445bfe9084a8e8f8ec85a9f386dd94d589c19a9641a98c15ad2494a559 +c28d8cfc075cef5468ac5f82a6a81a435964d8c41dfa557672a1a5768dca553e
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