* [moderation/CI] Re: net: sleepable ndo_set_rx_mode
@ 2026-03-14 9:25 syzbot ci
2026-03-14 18:46 ` Aleksandr Nogikh
0 siblings, 1 reply; 3+ messages in thread
From: syzbot ci @ 2026-03-14 9:25 UTC (permalink / raw)
To: syzkaller-upstream-moderation; +Cc: syzbot
syzbot ci has tested the following series
[v1] net: sleepable ndo_set_rx_mode
https://lore.kernel.org/all/20260313145113.1424442-1-sdf@fomichev.me
* [PATCH net-next 01/11] net: add address list snapshot and reconciliation infrastructure
* [PATCH net-next 02/11] net: introduce ndo_set_rx_mode_async and dev_rx_mode_work
* [PATCH net-next 03/11] net: move promiscuity handling into dev_rx_mode_work
* [PATCH net-next 04/11] fbnic: convert to ndo_set_rx_mode_async
* [PATCH net-next 05/11] mlx5: convert to ndo_set_rx_mode_async
* [PATCH net-next 06/11] bnxt: convert to ndo_set_rx_mode_async
* [PATCH net-next 07/11] iavf: convert to ndo_set_rx_mode_async
* [PATCH net-next 08/11] netdevsim: convert to ndo_set_rx_mode_async
* [PATCH net-next 09/11] dummy: convert to ndo_set_rx_mode_async
* [PATCH net-next 10/11] net: warn ops-locked drivers still using ndo_set_rx_mode
* [PATCH net-next 11/11] selftests: net: add team_bridge_macvlan rx_mode test
and found the following issue:
INFO: task hung in cfg80211_wiphy_work
Full report is available here:
https://ci.syzbot.org/series/2082d932-a52b-452f-8578-cff71ac48dba
***
INFO: task hung in cfg80211_wiphy_work
tree: net-next
URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net-next.git
base: 8f921f61005450589c0bc1a941a5ddde21d9aed9
arch: amd64
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
config: https://ci.syzbot.org/builds/2b308211-99ab-473d-bc06-5fbd9675960b/config
syz repro: https://ci.syzbot.org/findings/2364ee6f-c520-43b4-a8cf-9e3bb0e1ee31/syz_repro
INFO: task kworker/u10:0:27 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u10:0 state:D stack:25256 pid:27 tgid:27 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound cfg80211_wiphy_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
class_wiphy_constructor include/net/cfg80211.h:6443 [inline]
cfg80211_wiphy_work+0xb4/0x4a0 net/wireless/core.c:425
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/1:2:868 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2 state:D stack:25504 pid:868 tgid:868 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events request_firmware_work_func
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
regdb_fw_cb+0x7d/0x1c0 net/wireless/reg.c:1016
request_firmware_work_func+0x105/0x1c0 drivers/base/firmware_loader/main.c:1152
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/u9:5:1092 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u9:5 state:D stack:24320 pid:1092 tgid:1092 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound linkwatch_event
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
linkwatch_event+0xe/0x60 net/core/link_watch.c:313
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task dhcpcd:5549 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:25720 pid:5549 tgid:5549 ppid:1 task_flags:0x400140 flags:0x00080000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
vlan_ioctl_handler+0xf0/0x630 net/8021q/vlan.c:579
sock_ioctl+0x668/0x7f0 net/socket.c:1332
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4686473d49
RSP: 002b:00007fff8730a6f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000557cb913f4d0 RCX: 00007f4686473d49
RDX: 00007fff8730a700 RSI: 0000000000008982 RDI: 0000000000000011
RBP: 0000000000000002 R08: 0000000000000008 R09: 0000000000000000
R10: 00007fff8731ad80 R11: 0000000000000246 R12: 00007fff8730a700
R13: 00007fff8730a7c0 R14: 0000557cb913f4d0 R15: 0000557cb91a6f10
</TASK>
INFO: task kworker/u8:2:5621 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:2 state:D stack:25176 pid:5621 tgid:5621 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: netns cleanup_net
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_timeout+0xc3/0x2c0 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:100 [inline]
__wait_for_common kernel/sched/completion.c:121 [inline]
wait_for_common kernel/sched/completion.c:132 [inline]
wait_for_completion+0x2cc/0x5e0 kernel/sched/completion.c:153
__flush_work+0xa17/0xc50 kernel/workqueue.c:4327
__cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4447
free_netdev+0x26c/0x6e0 net/core/dev.c:12310
netdev_run_todo+0xc88/0xe10 net/core/dev.c:11847
ops_exit_rtnl_list net/core/net_namespace.c:189 [inline]
ops_undo_list+0x3d8/0x940 net/core/net_namespace.c:248
cleanup_net+0x56b/0x800 net/core/net_namespace.c:704
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/u8:3:5896 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3 state:D stack:23624 pid:5896 tgid:5896 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: rx_mode_wq dev_rx_mode_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
dev_rx_mode_work+0x170/0xc90 net/core/dev.c:9700
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/1:4:5906 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:4 state:D stack:23752 pid:5906 tgid:5906 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events switchdev_deferred_process_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task syz-executor:10842 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:22520 pid:10842 tgid:10842 ppid:1 task_flags:0x480140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
rtnl_net_dev_lock+0x257/0x2f0 net/core/dev.c:2163
unregister_netdevice_notifier_dev_net+0x96/0x440 net/core/dev.c:2208
nsim_destroy+0xd9/0x680 drivers/net/netdevsim/netdev.c:1174
__nsim_dev_port_del+0x14d/0x1b0 drivers/net/netdevsim/dev.c:1528
nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1540 [inline]
nsim_dev_reload_destroy+0x288/0x490 drivers/net/netdevsim/dev.c:1764
nsim_drv_remove+0x58/0x170 drivers/net/netdevsim/dev.c:1779
device_remove drivers/base/dd.c:571 [inline]
__device_release_driver drivers/base/dd.c:1284 [inline]
device_release_driver_internal+0x46f/0x860 drivers/base/dd.c:1307
bus_remove_device+0x34d/0x440 drivers/base/bus.c:616
device_del+0x527/0x8f0 drivers/base/core.c:3878
device_unregister+0x21/0xf0 drivers/base/core.c:3919
nsim_bus_dev_del drivers/net/netdevsim/bus.c:491 [inline]
del_device_store+0x2b0/0x370 drivers/net/netdevsim/bus.c:244
kernfs_fop_write_iter+0x3af/0x540 fs/kernfs/file.c:352
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f458055cfce
RSP: 002b:00007fff68821b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555580081500 RCX: 00007f458055cfce
RDX: 0000000000000001 RSI: 00007fff68821b90 RDI: 0000000000000005
RBP: 00007f458063351c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff68821b90 R14: 00007f4581344620 R15: 0000000000000003
</TASK>
INFO: task syz.0.1807:10948 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1807 state:D stack:26656 pid:10948 tgid:10947 ppid:5918 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
nl80211_pre_doit+0x5f/0x930 net/wireless/nl80211.c:18117
genl_family_rcv_msg_doit+0x1d7/0x330 net/netlink/genetlink.c:1109
genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:721 [inline]
__sock_sendmsg net/socket.c:736 [inline]
____sys_sendmsg+0x972/0x9f0 net/socket.c:2585
___sys_sendmsg+0x2a5/0x360 net/socket.c:2639
__sys_sendmsg net/socket.c:2671 [inline]
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2674
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc97739c799
RSP: 002b:00007fc97825a028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fc977615fa0 RCX: 00007fc97739c799
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000003
RBP: 00007fc977432c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc977616038 R14: 00007fc977615fa0 R15: 00007ffd2003aab8
</TASK>
INFO: task syz.0.1807:10952 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1807 state:D stack:26536 pid:10952 tgid:10947 ppid:5918 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
nl80211_pre_doit+0x5f/0x930 net/wireless/nl80211.c:18117
genl_family_rcv_msg_doit+0x1d7/0x330 net/netlink/genetlink.c:1109
genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:721 [inline]
__sock_sendmsg net/socket.c:736 [inline]
____sys_sendmsg+0x972/0x9f0 net/socket.c:2585
___sys_sendmsg+0x2a5/0x360 net/socket.c:2639
__sys_sendmsg net/socket.c:2671 [inline]
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2674
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc97739c799
RSP: 002b:00007fc978239028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fc977616090 RCX: 00007fc97739c799
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000003
RBP: 00007fc977432c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc977616128 R14: 00007fc977616090 R15: 00007ffd2003aab8
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.2.1808:10950 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1808 state:D stack:26520 pid:10950 tgid:10949 ppid:5922 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_timeout+0xc3/0x2c0 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:100 [inline]
__wait_for_common kernel/sched/completion.c:121 [inline]
wait_for_common kernel/sched/completion.c:132 [inline]
wait_for_completion+0x2cc/0x5e0 kernel/sched/completion.c:153
__flush_workqueue+0x6f6/0x14f0 kernel/workqueue.c:4083
netdev_run_todo+0x2fc/0xe10 net/core/dev.c:11812
nl80211_pre_doit+0x4f1/0x930 net/wireless/nl80211.c:-1
genl_family_rcv_msg_doit+0x1d7/0x330 net/netlink/genetlink.c:1109
genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:721 [inline]
__sock_sendmsg net/socket.c:736 [inline]
____sys_sendmsg+0x972/0x9f0 net/socket.c:2585
___sys_sendmsg+0x2a5/0x360 net/socket.c:2639
__sys_sendmsg net/socket.c:2671 [inline]
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2674
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f634299c799
RSP: 002b:00007f6343865028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f6342c15fa0 RCX: 00007f634299c799
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000003
RBP: 00007f6342a32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6342c16038 R14: 00007f6342c15fa0 R15: 00007ffcaed4e308
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.2.1808:10951 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1808 state:D stack:26088 pid:10951 tgid:10949 ppid:5922 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
wiphy_lock include/net/cfg80211.h:6428 [inline]
nl80211_pre_doit+0x281/0x930 net/wireless/nl80211.c:18190
genl_family_rcv_msg_doit+0x1d7/0x330 net/netlink/genetlink.c:1109
genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:721 [inline]
__sock_sendmsg net/socket.c:736 [inline]
____sys_sendmsg+0x972/0x9f0 net/socket.c:2585
___sys_sendmsg+0x2a5/0x360 net/socket.c:2639
__sys_sendmsg net/socket.c:2671 [inline]
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2674
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f634299c799
RSP: 002b:00007f6343844028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f6342c16090 RCX: 00007f634299c799
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000003
RBP: 00007f6342a32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6342c16128 R14: 00007f6342c16090 R15: 00007ffcaed4e308
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz-executor:10957 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:25464 pid:10957 tgid:10957 ppid:1 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
inet_rtm_newaddr+0x404/0x1ad0 net/ipv4/devinet.c:978
rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6958
netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:721 [inline]
__sock_sendmsg net/socket.c:736 [inline]
__sys_sendto+0x672/0x710 net/socket.c:2199
__do_sys_sendto net/socket.c:2206 [inline]
__se_sys_sendto net/socket.c:2202 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2202
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbe5e55cfce
RSP: 002b:00007ffc1795c728 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000555555a84500 RCX: 00007fbe5e55cfce
RDX: 0000000000000028 RSI: 00007fbe5f344670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007ffc1795c7a4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fbe5f344670 R15: 0000000000000000
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz-executor:10958 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:25112 pid:10958 tgid:10958 ppid:1 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
inet_rtm_newaddr+0x404/0x1ad0 net/ipv4/devinet.c:978
rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6958
netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:721 [inline]
__sock_sendmsg net/socket.c:736 [inline]
__sys_sendto+0x672/0x710 net/socket.c:2199
__do_sys_sendto net/socket.c:2206 [inline]
__se_sys_sendto net/socket.c:2202 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2202
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2853d5cfce
RSP: 002b:00007ffdddce0d58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000555567dbb500 RCX: 00007f2853d5cfce
RDX: 0000000000000028 RSI: 00007f2854b44670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007ffdddce0dd4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f2854b44670 R15: 0000000000000000
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x135/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
watchdog+0xfd9/0x1030 kernel/hung_task.c:515
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:63
Code: 1e 6c 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 43 42 1a 00 fb f4 <e9> fc e9 02 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffc90000197e20 EFLAGS: 00000246
RAX: ffff8882a9464000 RBX: ffffffff819a8c8d RCX: 0000000080000001
RDX: 0000000000000001 RSI: ffffffff8c27b4e0 RDI: ffffffff819a8c8d
RBP: ffffc90000197f10 R08: ffff88823c63395b R09: 1ffff110478c672b
R10: dffffc0000000000 R11: ffffed10478c672c R12: ffffffff901140b0
R13: 1ffff1102c095000 R14: 0000000000000001 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8882a9464000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd37a2e068 CR3: 00000001156b2000 CR4: 00000000000006f0
Call Trace:
<TASK>
arch_safe_halt arch/x86/kernel/process.c:766 [inline]
default_idle+0x9/0x20 arch/x86/kernel/process.c:767
default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:191 [inline]
do_idle+0x1bd/0x500 kernel/sched/idle.c:332
cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:430
start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:312
common_startup_64+0x13e/0x147
</TASK>
***
If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
Tested-by: syzbot@syzkaller.appspotmail.com
---
This report is generated by a bot. It may contain errors.
syzbot ci engineers can be reached at syzkaller@googlegroups.com.
The email will later be sent to:
[alexanderduyck@fb.com anthony.l.nguyen@intel.com cratiu@nvidia.com davem@davemloft.net edumazet@google.com kernel-team@meta.com kuba@kernel.org michael.chan@broadcom.com netdev@vger.kernel.org pabeni@redhat.com pavan.chebbi@broadcom.com przemyslaw.kitszel@intel.com saeedm@nvidia.com sdf@fomichev.me tariqt@nvidia.com]
If the report looks fine to you, reply with:
#syz upstream
If the report is a false positive, reply with
#syz invalid
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [moderation/CI] Re: net: sleepable ndo_set_rx_mode
2026-03-14 9:25 syzbot ci
@ 2026-03-14 18:46 ` Aleksandr Nogikh
0 siblings, 0 replies; 3+ messages in thread
From: Aleksandr Nogikh @ 2026-03-14 18:46 UTC (permalink / raw)
To: syzbot ci; +Cc: syzkaller-upstream-moderation, syzbot
#syz upstream
On Sat, Mar 14, 2026 at 10:25 AM syzbot ci
<syzbot+ci07ec1701c5cf77f8@syzkaller.appspotmail.com> wrote:
>
> syzbot ci has tested the following series
>
> [v1] net: sleepable ndo_set_rx_mode
> https://lore.kernel.org/all/20260313145113.1424442-1-sdf@fomichev.me
> * [PATCH net-next 01/11] net: add address list snapshot and reconciliation infrastructure
> * [PATCH net-next 02/11] net: introduce ndo_set_rx_mode_async and dev_rx_mode_work
> * [PATCH net-next 03/11] net: move promiscuity handling into dev_rx_mode_work
> * [PATCH net-next 04/11] fbnic: convert to ndo_set_rx_mode_async
> * [PATCH net-next 05/11] mlx5: convert to ndo_set_rx_mode_async
> * [PATCH net-next 06/11] bnxt: convert to ndo_set_rx_mode_async
> * [PATCH net-next 07/11] iavf: convert to ndo_set_rx_mode_async
> * [PATCH net-next 08/11] netdevsim: convert to ndo_set_rx_mode_async
> * [PATCH net-next 09/11] dummy: convert to ndo_set_rx_mode_async
> * [PATCH net-next 10/11] net: warn ops-locked drivers still using ndo_set_rx_mode
> * [PATCH net-next 11/11] selftests: net: add team_bridge_macvlan rx_mode test
>
> and found the following issue:
> INFO: task hung in cfg80211_wiphy_work
>
> Full report is available here:
> https://ci.syzbot.org/series/2082d932-a52b-452f-8578-cff71ac48dba
>
> ***
>
> INFO: task hung in cfg80211_wiphy_work
>
> tree: net-next
> URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net-next.git
> base: 8f921f61005450589c0bc1a941a5ddde21d9aed9
> arch: amd64
> compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
> config: https://ci.syzbot.org/builds/2b308211-99ab-473d-bc06-5fbd9675960b/config
> syz repro: https://ci.syzbot.org/findings/2364ee6f-c520-43b4-a8cf-9e3bb0e1ee31/syz_repro
>
> INFO: task kworker/u10:0:27 blocked for more than 143 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:kworker/u10:0 state:D stack:25256 pid:27 tgid:27 ppid:2 task_flags:0x4208060 flags:0x00080000
> Workqueue: events_unbound cfg80211_wiphy_work
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
> __mutex_lock_common kernel/locking/mutex.c:692 [inline]
> __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
> class_wiphy_constructor include/net/cfg80211.h:6443 [inline]
> cfg80211_wiphy_work+0xb4/0x4a0 net/wireless/core.c:425
> process_one_work kernel/workqueue.c:3275 [inline]
> process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
> worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
> kthread+0x388/0x470 kernel/kthread.c:436
> ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
> </TASK>
> INFO: task kworker/1:2:868 blocked for more than 143 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:kworker/1:2 state:D stack:25504 pid:868 tgid:868 ppid:2 task_flags:0x4208060 flags:0x00080000
> Workqueue: events request_firmware_work_func
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
> __mutex_lock_common kernel/locking/mutex.c:692 [inline]
> __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
> regdb_fw_cb+0x7d/0x1c0 net/wireless/reg.c:1016
> request_firmware_work_func+0x105/0x1c0 drivers/base/firmware_loader/main.c:1152
> process_one_work kernel/workqueue.c:3275 [inline]
> process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
> worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
> kthread+0x388/0x470 kernel/kthread.c:436
> ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
> </TASK>
> INFO: task kworker/u9:5:1092 blocked for more than 143 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:kworker/u9:5 state:D stack:24320 pid:1092 tgid:1092 ppid:2 task_flags:0x4208060 flags:0x00080000
> Workqueue: events_unbound linkwatch_event
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
> __mutex_lock_common kernel/locking/mutex.c:692 [inline]
> __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
> linkwatch_event+0xe/0x60 net/core/link_watch.c:313
> process_one_work kernel/workqueue.c:3275 [inline]
> process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
> worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
> kthread+0x388/0x470 kernel/kthread.c:436
> ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
> </TASK>
> INFO: task dhcpcd:5549 blocked for more than 143 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:dhcpcd state:D stack:25720 pid:5549 tgid:5549 ppid:1 task_flags:0x400140 flags:0x00080000
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
> __mutex_lock_common kernel/locking/mutex.c:692 [inline]
> __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
> vlan_ioctl_handler+0xf0/0x630 net/8021q/vlan.c:579
> sock_ioctl+0x668/0x7f0 net/socket.c:1332
> vfs_ioctl fs/ioctl.c:51 [inline]
> __do_sys_ioctl fs/ioctl.c:597 [inline]
> __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
> do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f4686473d49
> RSP: 002b:00007fff8730a6f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
> RAX: ffffffffffffffda RBX: 0000557cb913f4d0 RCX: 00007f4686473d49
> RDX: 00007fff8730a700 RSI: 0000000000008982 RDI: 0000000000000011
> RBP: 0000000000000002 R08: 0000000000000008 R09: 0000000000000000
> R10: 00007fff8731ad80 R11: 0000000000000246 R12: 00007fff8730a700
> R13: 00007fff8730a7c0 R14: 0000557cb913f4d0 R15: 0000557cb91a6f10
> </TASK>
> INFO: task kworker/u8:2:5621 blocked for more than 143 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:kworker/u8:2 state:D stack:25176 pid:5621 tgid:5621 ppid:2 task_flags:0x4208060 flags:0x00080000
> Workqueue: netns cleanup_net
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_timeout+0xc3/0x2c0 kernel/time/sleep_timeout.c:75
> do_wait_for_common kernel/sched/completion.c:100 [inline]
> __wait_for_common kernel/sched/completion.c:121 [inline]
> wait_for_common kernel/sched/completion.c:132 [inline]
> wait_for_completion+0x2cc/0x5e0 kernel/sched/completion.c:153
> __flush_work+0xa17/0xc50 kernel/workqueue.c:4327
> __cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4447
> free_netdev+0x26c/0x6e0 net/core/dev.c:12310
> netdev_run_todo+0xc88/0xe10 net/core/dev.c:11847
> ops_exit_rtnl_list net/core/net_namespace.c:189 [inline]
> ops_undo_list+0x3d8/0x940 net/core/net_namespace.c:248
> cleanup_net+0x56b/0x800 net/core/net_namespace.c:704
> process_one_work kernel/workqueue.c:3275 [inline]
> process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
> worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
> kthread+0x388/0x470 kernel/kthread.c:436
> ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
> </TASK>
> INFO: task kworker/u8:3:5896 blocked for more than 143 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:kworker/u8:3 state:D stack:23624 pid:5896 tgid:5896 ppid:2 task_flags:0x4208060 flags:0x00080000
> Workqueue: rx_mode_wq dev_rx_mode_work
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
> __mutex_lock_common kernel/locking/mutex.c:692 [inline]
> __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
> dev_rx_mode_work+0x170/0xc90 net/core/dev.c:9700
> process_one_work kernel/workqueue.c:3275 [inline]
> process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
> worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
> kthread+0x388/0x470 kernel/kthread.c:436
> ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
> </TASK>
> INFO: task kworker/1:4:5906 blocked for more than 143 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:kworker/1:4 state:D stack:23752 pid:5906 tgid:5906 ppid:2 task_flags:0x4208060 flags:0x00080000
> Workqueue: events switchdev_deferred_process_work
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
> __mutex_lock_common kernel/locking/mutex.c:692 [inline]
> __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
> switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
> process_one_work kernel/workqueue.c:3275 [inline]
> process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
> worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
> kthread+0x388/0x470 kernel/kthread.c:436
> ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
> </TASK>
> INFO: task syz-executor:10842 blocked for more than 144 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:syz-executor state:D stack:22520 pid:10842 tgid:10842 ppid:1 task_flags:0x480140 flags:0x00080002
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
> __mutex_lock_common kernel/locking/mutex.c:692 [inline]
> __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
> rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
> rtnl_net_dev_lock+0x257/0x2f0 net/core/dev.c:2163
> unregister_netdevice_notifier_dev_net+0x96/0x440 net/core/dev.c:2208
> nsim_destroy+0xd9/0x680 drivers/net/netdevsim/netdev.c:1174
> __nsim_dev_port_del+0x14d/0x1b0 drivers/net/netdevsim/dev.c:1528
> nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1540 [inline]
> nsim_dev_reload_destroy+0x288/0x490 drivers/net/netdevsim/dev.c:1764
> nsim_drv_remove+0x58/0x170 drivers/net/netdevsim/dev.c:1779
> device_remove drivers/base/dd.c:571 [inline]
> __device_release_driver drivers/base/dd.c:1284 [inline]
> device_release_driver_internal+0x46f/0x860 drivers/base/dd.c:1307
> bus_remove_device+0x34d/0x440 drivers/base/bus.c:616
> device_del+0x527/0x8f0 drivers/base/core.c:3878
> device_unregister+0x21/0xf0 drivers/base/core.c:3919
> nsim_bus_dev_del drivers/net/netdevsim/bus.c:491 [inline]
> del_device_store+0x2b0/0x370 drivers/net/netdevsim/bus.c:244
> kernfs_fop_write_iter+0x3af/0x540 fs/kernfs/file.c:352
> new_sync_write fs/read_write.c:595 [inline]
> vfs_write+0x61d/0xb90 fs/read_write.c:688
> ksys_write+0x150/0x270 fs/read_write.c:740
> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
> do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f458055cfce
> RSP: 002b:00007fff68821b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
> RAX: ffffffffffffffda RBX: 0000555580081500 RCX: 00007f458055cfce
> RDX: 0000000000000001 RSI: 00007fff68821b90 RDI: 0000000000000005
> RBP: 00007f458063351c R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
> R13: 00007fff68821b90 R14: 00007f4581344620 R15: 0000000000000003
> </TASK>
> INFO: task syz.0.1807:10948 blocked for more than 144 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:syz.0.1807 state:D stack:26656 pid:10948 tgid:10947 ppid:5918 task_flags:0x400140 flags:0x00080002
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
> __mutex_lock_common kernel/locking/mutex.c:692 [inline]
> __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
> nl80211_pre_doit+0x5f/0x930 net/wireless/nl80211.c:18117
> genl_family_rcv_msg_doit+0x1d7/0x330 net/netlink/genetlink.c:1109
> genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
> genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
> netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
> genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
> netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
> netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
> netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
> sock_sendmsg_nosec net/socket.c:721 [inline]
> __sock_sendmsg net/socket.c:736 [inline]
> ____sys_sendmsg+0x972/0x9f0 net/socket.c:2585
> ___sys_sendmsg+0x2a5/0x360 net/socket.c:2639
> __sys_sendmsg net/socket.c:2671 [inline]
> __do_sys_sendmsg net/socket.c:2676 [inline]
> __se_sys_sendmsg net/socket.c:2674 [inline]
> __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2674
> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
> do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fc97739c799
> RSP: 002b:00007fc97825a028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
> RAX: ffffffffffffffda RBX: 00007fc977615fa0 RCX: 00007fc97739c799
> RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000003
> RBP: 00007fc977432c99 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
> R13: 00007fc977616038 R14: 00007fc977615fa0 R15: 00007ffd2003aab8
> </TASK>
> INFO: task syz.0.1807:10952 blocked for more than 144 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:syz.0.1807 state:D stack:26536 pid:10952 tgid:10947 ppid:5918 task_flags:0x400140 flags:0x00080002
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
> __mutex_lock_common kernel/locking/mutex.c:692 [inline]
> __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
> nl80211_pre_doit+0x5f/0x930 net/wireless/nl80211.c:18117
> genl_family_rcv_msg_doit+0x1d7/0x330 net/netlink/genetlink.c:1109
> genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
> genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
> netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
> genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
> netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
> netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
> netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
> sock_sendmsg_nosec net/socket.c:721 [inline]
> __sock_sendmsg net/socket.c:736 [inline]
> ____sys_sendmsg+0x972/0x9f0 net/socket.c:2585
> ___sys_sendmsg+0x2a5/0x360 net/socket.c:2639
> __sys_sendmsg net/socket.c:2671 [inline]
> __do_sys_sendmsg net/socket.c:2676 [inline]
> __se_sys_sendmsg net/socket.c:2674 [inline]
> __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2674
> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
> do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fc97739c799
> RSP: 002b:00007fc978239028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
> RAX: ffffffffffffffda RBX: 00007fc977616090 RCX: 00007fc97739c799
> RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000003
> RBP: 00007fc977432c99 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
> R13: 00007fc977616128 R14: 00007fc977616090 R15: 00007ffd2003aab8
> </TASK>
> Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
> INFO: task syz.2.1808:10950 blocked for more than 144 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:syz.2.1808 state:D stack:26520 pid:10950 tgid:10949 ppid:5922 task_flags:0x400140 flags:0x00080002
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_timeout+0xc3/0x2c0 kernel/time/sleep_timeout.c:75
> do_wait_for_common kernel/sched/completion.c:100 [inline]
> __wait_for_common kernel/sched/completion.c:121 [inline]
> wait_for_common kernel/sched/completion.c:132 [inline]
> wait_for_completion+0x2cc/0x5e0 kernel/sched/completion.c:153
> __flush_workqueue+0x6f6/0x14f0 kernel/workqueue.c:4083
> netdev_run_todo+0x2fc/0xe10 net/core/dev.c:11812
> nl80211_pre_doit+0x4f1/0x930 net/wireless/nl80211.c:-1
> genl_family_rcv_msg_doit+0x1d7/0x330 net/netlink/genetlink.c:1109
> genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
> genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
> netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
> genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
> netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
> netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
> netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
> sock_sendmsg_nosec net/socket.c:721 [inline]
> __sock_sendmsg net/socket.c:736 [inline]
> ____sys_sendmsg+0x972/0x9f0 net/socket.c:2585
> ___sys_sendmsg+0x2a5/0x360 net/socket.c:2639
> __sys_sendmsg net/socket.c:2671 [inline]
> __do_sys_sendmsg net/socket.c:2676 [inline]
> __se_sys_sendmsg net/socket.c:2674 [inline]
> __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2674
> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
> do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f634299c799
> RSP: 002b:00007f6343865028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
> RAX: ffffffffffffffda RBX: 00007f6342c15fa0 RCX: 00007f634299c799
> RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000003
> RBP: 00007f6342a32c99 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
> R13: 00007f6342c16038 R14: 00007f6342c15fa0 R15: 00007ffcaed4e308
> </TASK>
> Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
> INFO: task syz.2.1808:10951 blocked for more than 144 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:syz.2.1808 state:D stack:26088 pid:10951 tgid:10949 ppid:5922 task_flags:0x400140 flags:0x00080002
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
> __mutex_lock_common kernel/locking/mutex.c:692 [inline]
> __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
> wiphy_lock include/net/cfg80211.h:6428 [inline]
> nl80211_pre_doit+0x281/0x930 net/wireless/nl80211.c:18190
> genl_family_rcv_msg_doit+0x1d7/0x330 net/netlink/genetlink.c:1109
> genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
> genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
> netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
> genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
> netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
> netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
> netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
> sock_sendmsg_nosec net/socket.c:721 [inline]
> __sock_sendmsg net/socket.c:736 [inline]
> ____sys_sendmsg+0x972/0x9f0 net/socket.c:2585
> ___sys_sendmsg+0x2a5/0x360 net/socket.c:2639
> __sys_sendmsg net/socket.c:2671 [inline]
> __do_sys_sendmsg net/socket.c:2676 [inline]
> __se_sys_sendmsg net/socket.c:2674 [inline]
> __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2674
> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
> do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f634299c799
> RSP: 002b:00007f6343844028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
> RAX: ffffffffffffffda RBX: 00007f6342c16090 RCX: 00007f634299c799
> RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000003
> RBP: 00007f6342a32c99 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
> R13: 00007f6342c16128 R14: 00007f6342c16090 R15: 00007ffcaed4e308
> </TASK>
> Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
> INFO: task syz-executor:10957 blocked for more than 144 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:syz-executor state:D stack:25464 pid:10957 tgid:10957 ppid:1 task_flags:0x400140 flags:0x00080002
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
> __mutex_lock_common kernel/locking/mutex.c:692 [inline]
> __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
> rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
> inet_rtm_newaddr+0x404/0x1ad0 net/ipv4/devinet.c:978
> rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6958
> netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
> netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
> netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
> netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
> sock_sendmsg_nosec net/socket.c:721 [inline]
> __sock_sendmsg net/socket.c:736 [inline]
> __sys_sendto+0x672/0x710 net/socket.c:2199
> __do_sys_sendto net/socket.c:2206 [inline]
> __se_sys_sendto net/socket.c:2202 [inline]
> __x64_sys_sendto+0xde/0x100 net/socket.c:2202
> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
> do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fbe5e55cfce
> RSP: 002b:00007ffc1795c728 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
> RAX: ffffffffffffffda RBX: 0000555555a84500 RCX: 00007fbe5e55cfce
> RDX: 0000000000000028 RSI: 00007fbe5f344670 RDI: 0000000000000003
> RBP: 0000000000000001 R08: 00007ffc1795c7a4 R09: 000000000000000c
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
> R13: 0000000000000000 R14: 00007fbe5f344670 R15: 0000000000000000
> </TASK>
> Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
> INFO: task syz-executor:10958 blocked for more than 144 seconds.
> Not tainted syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:syz-executor state:D stack:25112 pid:10958 tgid:10958 ppid:1 task_flags:0x400140 flags:0x00080002
> Call Trace:
> <TASK>
> context_switch kernel/sched/core.c:5295 [inline]
> __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
> __schedule_loop kernel/sched/core.c:6990 [inline]
> schedule+0x164/0x360 kernel/sched/core.c:7005
> schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
> __mutex_lock_common kernel/locking/mutex.c:692 [inline]
> __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
> rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
> inet_rtm_newaddr+0x404/0x1ad0 net/ipv4/devinet.c:978
> rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6958
> netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
> netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
> netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
> netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
> sock_sendmsg_nosec net/socket.c:721 [inline]
> __sock_sendmsg net/socket.c:736 [inline]
> __sys_sendto+0x672/0x710 net/socket.c:2199
> __do_sys_sendto net/socket.c:2206 [inline]
> __se_sys_sendto net/socket.c:2202 [inline]
> __x64_sys_sendto+0xde/0x100 net/socket.c:2202
> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
> do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f2853d5cfce
> RSP: 002b:00007ffdddce0d58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
> RAX: ffffffffffffffda RBX: 0000555567dbb500 RCX: 00007f2853d5cfce
> RDX: 0000000000000028 RSI: 00007f2854b44670 RDI: 0000000000000003
> RBP: 0000000000000001 R08: 00007ffdddce0dd4 R09: 000000000000000c
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
> R13: 0000000000000000 R14: 00007f2854b44670 R15: 0000000000000000
> </TASK>
> Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
> INFO: lockdep is turned off.
> NMI backtrace for cpu 0
> CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
> Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
> Call Trace:
> <TASK>
> dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
> nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
> nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
> trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline]
> __sys_info lib/sys_info.c:157 [inline]
> sys_info+0x135/0x170 lib/sys_info.c:165
> check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
> watchdog+0xfd9/0x1030 kernel/hung_task.c:515
> kthread+0x388/0x470 kernel/kthread.c:436
> ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
> </TASK>
> Sending NMI from CPU 0 to CPUs 1:
> NMI backtrace for cpu 1
> CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full)
> Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
> RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:63
> Code: 1e 6c 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 43 42 1a 00 fb f4 <e9> fc e9 02 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
> RSP: 0018:ffffc90000197e20 EFLAGS: 00000246
> RAX: ffff8882a9464000 RBX: ffffffff819a8c8d RCX: 0000000080000001
> RDX: 0000000000000001 RSI: ffffffff8c27b4e0 RDI: ffffffff819a8c8d
> RBP: ffffc90000197f10 R08: ffff88823c63395b R09: 1ffff110478c672b
> R10: dffffc0000000000 R11: ffffed10478c672c R12: ffffffff901140b0
> R13: 1ffff1102c095000 R14: 0000000000000001 R15: 0000000000000001
> FS: 0000000000000000(0000) GS:ffff8882a9464000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007ffd37a2e068 CR3: 00000001156b2000 CR4: 00000000000006f0
> Call Trace:
> <TASK>
> arch_safe_halt arch/x86/kernel/process.c:766 [inline]
> default_idle+0x9/0x20 arch/x86/kernel/process.c:767
> default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
> cpuidle_idle_call kernel/sched/idle.c:191 [inline]
> do_idle+0x1bd/0x500 kernel/sched/idle.c:332
> cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:430
> start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:312
> common_startup_64+0x13e/0x147
> </TASK>
>
>
> ***
>
> If these findings have caused you to resend the series or submit a
> separate fix, please add the following tag to your commit message:
> Tested-by: syzbot@syzkaller.appspotmail.com
>
> ---
> This report is generated by a bot. It may contain errors.
> syzbot ci engineers can be reached at syzkaller@googlegroups.com.
>
> The email will later be sent to:
> [alexanderduyck@fb.com anthony.l.nguyen@intel.com cratiu@nvidia.com davem@davemloft.net edumazet@google.com kernel-team@meta.com kuba@kernel.org michael.chan@broadcom.com netdev@vger.kernel.org pabeni@redhat.com pavan.chebbi@broadcom.com przemyslaw.kitszel@intel.com saeedm@nvidia.com sdf@fomichev.me tariqt@nvidia.com]
>
> If the report looks fine to you, reply with:
> #syz upstream
>
> If the report is a false positive, reply with
> #syz invalid
>
> --
> You received this message because you are subscribed to the Google Groups "syzkaller-upstream-moderation" group.
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^ permalink raw reply [flat|nested] 3+ messages in thread
* [moderation/CI] Re: net: sleepable ndo_set_rx_mode
@ 2026-03-21 5:17 syzbot ci
0 siblings, 0 replies; 3+ messages in thread
From: syzbot ci @ 2026-03-21 5:17 UTC (permalink / raw)
To: syzkaller-upstream-moderation; +Cc: syzbot
syzbot ci has tested the following series
[v3] net: sleepable ndo_set_rx_mode
https://lore.kernel.org/all/20260320012501.2033548-1-sdf@fomichev.me
* [PATCH net-next v3 01/13] net: add address list snapshot and reconciliation infrastructure
* [PATCH net-next v3 02/13] wifi: cfg80211: use __rtnl_unlock in nl80211_pre_doit
* [PATCH net-next v3 03/13] net: introduce ndo_set_rx_mode_async and dev_rx_mode_work
* [PATCH net-next v3 04/13] net: move promiscuity handling into dev_rx_mode_work
* [PATCH net-next v3 05/13] fbnic: convert to ndo_set_rx_mode_async
* [PATCH net-next v3 06/13] mlx5: convert to ndo_set_rx_mode_async
* [PATCH net-next v3 07/13] bnxt: convert to ndo_set_rx_mode_async
* [PATCH net-next v3 08/13] bnxt: use snapshot in bnxt_cfg_rx_mode
* [PATCH net-next v3 09/13] iavf: convert to ndo_set_rx_mode_async
* [PATCH net-next v3 10/13] netdevsim: convert to ndo_set_rx_mode_async
* [PATCH net-next v3 11/13] dummy: convert to ndo_set_rx_mode_async
* [PATCH net-next v3 12/13] net: warn ops-locked drivers still using ndo_set_rx_mode
* [PATCH net-next v3 13/13] selftests: net: add team_bridge_macvlan rx_mode test
and found the following issue:
INFO: task hung in cfg80211_wiphy_work
Full report is available here:
https://ci.syzbot.org/series/a66ec069-24ee-4e22-83c2-e59af9285eea
***
INFO: task hung in cfg80211_wiphy_work
tree: net-next
URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net-next.git
base: 9ac76f3d0bb2940db3a9684d596b9c8f301ef315
arch: amd64
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
config: https://ci.syzbot.org/builds/db45b25a-4a5f-4c4b-9ff3-133b7bba9659/config
syz repro: https://ci.syzbot.org/findings/ab980877-0359-44c9-8b8c-903e6714c5b4/syz_repro
INFO: task kworker/u9:0:26 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u9:0 state:D stack:24832 pid:26 tgid:26 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound cfg80211_wiphy_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
class_wiphy_constructor include/net/cfg80211.h:6443 [inline]
cfg80211_wiphy_work+0xb4/0x4a0 net/wireless/core.c:426
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/u10:1:36 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u10:1 state:D stack:23800 pid:36 tgid:36 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound cfg80211_wiphy_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
class_wiphy_constructor include/net/cfg80211.h:6443 [inline]
cfg80211_wiphy_work+0xb4/0x4a0 net/wireless/core.c:426
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/u10:5:255 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u10:5 state:D stack:22120 pid:255 tgid:255 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound linkwatch_event
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
linkwatch_event+0xe/0x60 net/core/link_watch.c:313
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task dhcpcd:5550 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:25592 pid:5550 tgid:5550 ppid:1 task_flags:0x400140 flags:0x00080000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_timeout+0xc3/0x2c0 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:100 [inline]
__wait_for_common kernel/sched/completion.c:121 [inline]
wait_for_common kernel/sched/completion.c:132 [inline]
wait_for_completion+0x2cc/0x5e0 kernel/sched/completion.c:153
__flush_workqueue+0x6f6/0x14f0 kernel/workqueue.c:4083
netdev_run_todo+0x2fc/0xe10 net/core/dev.c:11816
vlan_ioctl_handler+0x590/0x630 net/8021q/vlan.c:680
sock_ioctl+0x668/0x7f0 net/socket.c:1332
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd6f242fd49
RSP: 002b:00007ffdcd636398 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00005636048f9650 RCX: 00007fd6f242fd49
RDX: 00007ffdcd6363a0 RSI: 0000000000008982 RDI: 0000000000000011
RBP: 0000000000000002 R08: 0000000000000008 R09: 0000000000000000
R10: 00007ffdcd646a20 R11: 0000000000000246 R12: 00007ffdcd6363a0
R13: 00007ffdcd636460 R14: 00005636048f9650 R15: 0000563604954f10
</TASK>
INFO: task kworker/u8:2:5622 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:2 state:D stack:23976 pid:5622 tgid:5622 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: netns cleanup_net
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_timeout+0xc3/0x2c0 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:100 [inline]
__wait_for_common kernel/sched/completion.c:121 [inline]
wait_for_common kernel/sched/completion.c:132 [inline]
wait_for_completion+0x2cc/0x5e0 kernel/sched/completion.c:153
__flush_work+0xa17/0xc50 kernel/workqueue.c:4327
__cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4447
free_netdev+0x26c/0x6e0 net/core/dev.c:12314
netdev_run_todo+0xc88/0xe10 net/core/dev.c:11851
ops_exit_rtnl_list net/core/net_namespace.c:189 [inline]
ops_undo_list+0x3d8/0x940 net/core/net_namespace.c:248
cleanup_net+0x56b/0x800 net/core/net_namespace.c:704
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/u8:3:5881 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3 state:D stack:25528 pid:5881 tgid:5881 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
addrconf_dad_work+0x11e/0x14c0 net/ipv6/addrconf.c:4198
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/u8:4:5891 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:4 state:D stack:25208 pid:5891 tgid:5891 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: rx_mode_wq dev_rx_mode_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
dev_rx_mode_work+0x17f/0xe00 net/core/dev.c:9703
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/1:4:5932 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:4 state:D stack:25152 pid:5932 tgid:5932 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events switchdev_deferred_process_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task syz-executor:5941 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:23048 pid:5941 tgid:5941 ppid:1 task_flags:0x480140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
rtnl_net_dev_lock+0x257/0x2f0 net/core/dev.c:2163
unregister_netdevice_notifier_dev_net+0x96/0x440 net/core/dev.c:2208
nsim_destroy+0xd9/0x680 drivers/net/netdevsim/netdev.c:1174
__nsim_dev_port_del+0x14d/0x1b0 drivers/net/netdevsim/dev.c:1528
nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1540 [inline]
nsim_dev_reload_destroy+0x288/0x490 drivers/net/netdevsim/dev.c:1764
nsim_drv_remove+0x58/0x170 drivers/net/netdevsim/dev.c:1779
device_remove drivers/base/dd.c:571 [inline]
__device_release_driver drivers/base/dd.c:1284 [inline]
device_release_driver_internal+0x46f/0x860 drivers/base/dd.c:1307
bus_remove_device+0x34d/0x440 drivers/base/bus.c:616
device_del+0x527/0x8f0 drivers/base/core.c:3878
device_unregister+0x21/0xf0 drivers/base/core.c:3919
nsim_bus_dev_del drivers/net/netdevsim/bus.c:491 [inline]
del_device_store+0x2b0/0x370 drivers/net/netdevsim/bus.c:244
kernfs_fop_write_iter+0x3af/0x540 fs/kernfs/file.c:352
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f854675cfce
RSP: 002b:00007ffc0ce0f7e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00005555709c6500 RCX: 00007f854675cfce
RDX: 0000000000000001 RSI: 00007ffc0ce0f870 RDI: 0000000000000005
RBP: 00007f854683351c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc0ce0f870 R14: 00007f8547544620 R15: 0000000000000003
</TASK>
INFO: task syz.2.119:6269 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.119 state:D stack:26656 pid:6269 tgid:6266 ppid:5940 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
class_wiphy_constructor include/net/cfg80211.h:6443 [inline]
nl80211_set_wiphy+0x261/0x2fa0 net/wireless/nl80211.c:3920
genl_family_rcv_msg_doit+0x22a/0x330 net/netlink/genetlink.c:1114
genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:721 [inline]
__sock_sendmsg net/socket.c:736 [inline]
____sys_sendmsg+0x972/0x9f0 net/socket.c:2585
___sys_sendmsg+0x2a5/0x360 net/socket.c:2639
__sys_sendmsg net/socket.c:2671 [inline]
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2674
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f578299c799
RSP: 002b:00007f57837e5028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5782c15fa0 RCX: 00007f578299c799
RDX: 0000000000040044 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007f5782a32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5782c16038 R14: 00007f5782c15fa0 R15: 00007ffdecd52278
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.2.119:6270 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.119 state:D stack:26256 pid:6270 tgid:6266 ppid:5940 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_timeout+0xc3/0x2c0 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:100 [inline]
__wait_for_common kernel/sched/completion.c:121 [inline]
wait_for_common kernel/sched/completion.c:132 [inline]
wait_for_completion+0x2cc/0x5e0 kernel/sched/completion.c:153
__flush_workqueue+0x6f6/0x14f0 kernel/workqueue.c:4083
netdev_run_todo+0x2fc/0xe10 net/core/dev.c:11816
nl80211_set_wiphy+0x2d3/0x2fa0 net/wireless/nl80211.c:3930
genl_family_rcv_msg_doit+0x22a/0x330 net/netlink/genetlink.c:1114
genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:721 [inline]
__sock_sendmsg net/socket.c:736 [inline]
____sys_sendmsg+0x972/0x9f0 net/socket.c:2585
___sys_sendmsg+0x2a5/0x360 net/socket.c:2639
__sys_sendmsg net/socket.c:2671 [inline]
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2674
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f578299c799
RSP: 002b:00007f57837c4028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5782c16090 RCX: 00007f578299c799
RDX: 0000000000040044 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007f5782a32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5782c16128 R14: 00007f5782c16090 R15: 00007ffdecd52278
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.0.120:6272 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.120 state:D stack:26224 pid:6272 tgid:6271 ppid:5937 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_timeout+0xc3/0x2c0 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:100 [inline]
__wait_for_common kernel/sched/completion.c:121 [inline]
wait_for_common kernel/sched/completion.c:132 [inline]
wait_for_completion+0x2cc/0x5e0 kernel/sched/completion.c:153
__flush_workqueue+0x6f6/0x14f0 kernel/workqueue.c:4083
netdev_run_todo+0x2fc/0xe10 net/core/dev.c:11816
nl80211_set_wiphy+0x2d3/0x2fa0 net/wireless/nl80211.c:3930
genl_family_rcv_msg_doit+0x22a/0x330 net/netlink/genetlink.c:1114
genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:721 [inline]
__sock_sendmsg net/socket.c:736 [inline]
____sys_sendmsg+0x972/0x9f0 net/socket.c:2585
___sys_sendmsg+0x2a5/0x360 net/socket.c:2639
__sys_sendmsg net/socket.c:2671 [inline]
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2674
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1dc139c799
RSP: 002b:00007f1dc09fe028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1dc1615fa0 RCX: 00007f1dc139c799
RDX: 0000000000040044 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007f1dc1432c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1dc1616038 R14: 00007f1dc1615fa0 R15: 00007ffc4336ffc8
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.0.120:6273 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.120 state:D stack:27328 pid:6273 tgid:6271 ppid:5937 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776
nl80211_pre_doit+0x5f/0x930 net/wireless/nl80211.c:18128
genl_family_rcv_msg_doit+0x1d7/0x330 net/netlink/genetlink.c:1109
genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:721 [inline]
__sock_sendmsg net/socket.c:736 [inline]
____sys_sendmsg+0x972/0x9f0 net/socket.c:2585
___sys_sendmsg+0x2a5/0x360 net/socket.c:2639
__sys_sendmsg net/socket.c:2671 [inline]
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2674
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1dc139c799
RSP: 002b:00007f1dc09dd028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1dc1616090 RCX: 00007f1dc139c799
RDX: 0000000000040044 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007f1dc1432c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1dc1616128 R14: 00007f1dc1616090 R15: 00007ffc4336ffc8
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x135/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
watchdog+0xfd9/0x1030 kernel/hung_task.c:515
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:63
Code: 9e 6e 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 43 42 1a 00 fb f4 <e9> fc e9 02 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffffff8e407dc0 EFLAGS: 00000246
RAX: ffff88818de64000 RBX: ffffffff819a8c8d RCX: 0000000080000001
RDX: 0000000000000001 RSI: ffffffff8c27b4e0 RDI: ffffffff819a8c8d
RBP: ffffffff8e407eb0 R08: ffff88812103395b R09: 1ffff1102420672b
R10: dffffc0000000000 R11: ffffed102420672c R12: ffffffff901134b0
R13: 1ffffffff1c929d8 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff88818de64000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555bc24eac48 CR3: 0000000110a12000 CR4: 00000000000006f0
Call Trace:
<TASK>
arch_safe_halt arch/x86/kernel/process.c:766 [inline]
default_idle+0x9/0x20 arch/x86/kernel/process.c:767
default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:191 [inline]
do_idle+0x1bd/0x500 kernel/sched/idle.c:332
cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:430
rest_init+0x2de/0x300 init/main.c:760
start_kernel+0x385/0x3d0 init/main.c:1210
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x147
</TASK>
***
If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
Tested-by: syzbot@syzkaller.appspotmail.com
---
This report is generated by a bot. It may contain errors.
syzbot ci engineers can be reached at syzkaller@googlegroups.com.
The email will later be sent to:
[aleksandr.loktionov@intel.com alexanderduyck@fb.com andrew@lunn.ch anthony.l.nguyen@intel.com bestswngs@gmail.com corbet@lwn.net cratiu@nvidia.com davem@davemloft.net dtatulea@nvidia.com edumazet@google.com horms@kernel.org intel-wired-lan@lists.osuosl.org jacob.e.keller@intel.com jianbol@nvidia.com johannes@sipsolutions.net kees@kernel.org kernel-team@meta.com kuba@kernel.org leon@kernel.org linux-doc@vger.kernel.org linux-kernel@vger.kernel.org linux-kselftest@vger.kernel.org linux-rdma@vger.kernel.org linux-wireless@vger.kernel.org mbloch@nvidia.com michael.chan@broadcom.com mohsin.bashr@gmail.com netdev@vger.kernel.org pabeni@redhat.com pavan.chebbi@broadcom.com przemyslaw.kitszel@intel.com saeedm@nvidia.com sd@queasysnail.net sdf@fomichev.me skhan@linuxfoundation.org skhawaja@google.com tariqt@nvidia.com willemb@google.com]
If the report looks fine to you, reply with:
#syz upstream
If the report is a false positive, reply with
#syz invalid
^ permalink raw reply [flat|nested] 3+ messages in thread
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2026-03-21 5:17 [moderation/CI] Re: net: sleepable ndo_set_rx_mode syzbot ci
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2026-03-14 9:25 syzbot ci
2026-03-14 18:46 ` Aleksandr Nogikh
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