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diff for duplicates of <0000000000001a912a0614f08419@google.com>

diff --git a/a/1.txt b/N1/1.txt
index 6f475a3..3700f65 100644
--- a/a/1.txt
+++ b/N1/1.txt
@@ -499,3 +499,1236 @@ If the report is a duplicate of another one, reply with:
 
 If you want to undo deduplication, reply with:
 #syz undup
+
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+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, 
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+
+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
+
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+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, 
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+
+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"
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+ " 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"
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+ "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"
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+ "\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"
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+ "If the report is already addressed, let syzbot know by replying with:\n"
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+ "(See the list of subsystem names on the web dashboard)\n"
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+ "\n"
+ "If you want to undo deduplication, reply with:\n"
+ "#syz undup\n"
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+ "Subject: [syzbot] [net?] [nfc?] INFO: task hung in nfc_urelease_event_work\n"
+ "From: syzbot <syzbot+e9e054e7ec32ca9f70da@syzkaller.appspotmail.com>\n"
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+ "\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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