INFO: task kworker/u8:3:50 blocked for more than 143 seconds.
Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3 state:D stack:20360 pid:50 tgid:50 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17df/0x4a40 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6804 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6819
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6876
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4147
process_one_work kernel/workqueue.c:3146 [inline]
process_scheduled_works+0x9d7/0x1730 kernel/workqueue.c:3226
worker_thread+0x86d/0xd70 kernel/workqueue.c:3307
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:242
</TASK>
INFO: task dhcpcd:4736 blocked for more than 143 seconds.
Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:20504 pid:4736 tgid:4736 ppid:4735 flags:0x00004002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17df/0x4a40 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6804 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6819
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6876
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
netlink_dump+0xde/0xc80 net/netlink/af_netlink.c:2211
__netlink_dump_start+0x5df/0x790 net/netlink/af_netlink.c:2370
netlink_dump_start include/linux/netlink.h:338 [inline]
rtnetlink_rcv_msg+0xc96/0x1040 net/core/rtnetlink.c:6565
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543
netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367
netlink_sendmsg+0xa3c/0xd70 net/netlink/af_netlink.c:1908
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: 0033:0x7fb6c8b38ad7
RSP: 002b:00007ffd5bcf1538 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007ffd5bcf2660 RCX: 00007fb6c8b38ad7
RDX: 0000000000000014 RSI: 00007ffd5bcf2580 RDI: 0000000000000013
RBP: 00007ffd5bcf25f0 R08: 00007ffd5bcf2564 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000016
R13: 00007ffd5bcf2564 R14: 00007ffd5bcf2580 R15: 0000000000000105
</TASK>
INFO: task kworker/1:10:4460 blocked for more than 144 seconds.
Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:10 state:D stack:24856 pid:4460 tgid:4460 ppid:2 flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17df/0x4a40 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6804 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6819
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6876
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
linkwatch_event+0xe/0x60 net/core/link_watch.c:281
process_one_work kernel/workqueue.c:3146 [inline]
process_scheduled_works+0x9d7/0x1730 kernel/workqueue.c:3226
worker_thread+0x86d/0xd70 kernel/workqueue.c:3307
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:242
</TASK>
INFO: task kworker/1:11:4466 blocked for more than 144 seconds.
Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:11 state:D stack:24592 pid:4466 tgid:4466 ppid:2 flags:0x00004000
Workqueue: events switchdev_deferred_process_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17df/0x4a40 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6804 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6819
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6876
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:75
process_one_work kernel/workqueue.c:3146 [inline]
process_scheduled_works+0x9d7/0x1730 kernel/workqueue.c:3226
worker_thread+0x86d/0xd70 kernel/workqueue.c:3307
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:242
</TASK>
INFO: task syz-executor.2:6350 blocked for more than 144 seconds.
Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:20984 pid:6350 tgid:6350 ppid:1 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17df/0x4a40 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6804 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6819
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6876
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
register_netdevice_notifier_net+0x1a/0xa0 net/core/dev.c:1867
nsim_dev_hwstats_init+0xc8/0x3d0 drivers/net/netdevsim/hwstats.c:420
nsim_drv_probe+0x817/0xb80 drivers/net/netdevsim/dev.c:1600
really_probe+0x29e/0xc50 drivers/base/dd.c:658
__driver_probe_device+0x1a2/0x3e0 drivers/base/dd.c:800
driver_probe_device+0x50/0x430 drivers/base/dd.c:830
__device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958
bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:457
__device_attach+0x333/0x520 drivers/base/dd.c:1030
bus_probe_device+0x189/0x260 drivers/base/bus.c:532
device_add+0x8ff/0xca0 drivers/base/core.c:3639
nsim_bus_dev_new drivers/net/netdevsim/bus.c:297 [inline]
new_device_store+0x3f3/0x890 drivers/net/netdevsim/bus.c:173
kernfs_fop_write_iter+0x3a1/0x500 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2117 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa84/0xcb0 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f81c7e7caef
RSP: 002b:00007fff3d02a860 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f81c7e7caef
RDX: 0000000000000003 RSI: 00007fff3d02a8b0 RDI: 0000000000000005
RBP: 00007f81c7eca045 R08: 0000000000000000 R09: 00007fff3d02a6b7
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007fff3d02a8b0 R14: 00007f81c8ad4620 R15: 0000000000000003
</TASK>
INFO: task syz-executor.3:6375 blocked for more than 144 seconds.
Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:18736 pid:6375 tgid:6375 ppid:1 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17df/0x4a40 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6804 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6819
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6876
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:79 [inline]
rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543
netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367
netlink_sendmsg+0xa3c/0xd70 net/netlink/af_netlink.c:1908
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: 0033:0x7f1f0aa7fa9c
RSP: 002b:00007fff73a82560 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f1f0b6d4620 RCX: 00007f1f0aa7fa9c
RDX: 0000000000000040 RSI: 00007f1f0b6d4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fff73a825b4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f1f0b6d4670 R15: 0000000000000000
</TASK>
INFO: task syz-executor.4:6412 blocked for more than 145 seconds.
Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:20984 pid:6412 tgid:6412 ppid:1 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17df/0x4a40 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6804 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6819
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6876
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
kernfs_fop_write_iter+0x3a1/0x500 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2117 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa84/0xcb0 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f8aef87caef
RSP: 002b:00007ffe587b37a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f8aef87caef
RDX: 0000000000000003 RSI: 00007ffe587b37f0 RDI: 0000000000000005
RBP: 00007f8aef8ca045 R08: 0000000000000000 R09: 00007ffe587b35f7
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007ffe587b37f0 R14: 00007f8af04d4620 R15: 0000000000000003
</TASK>
INFO: task syz-executor.0:6702 blocked for more than 145 seconds.
Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:20984 pid:6702 tgid:6702 ppid:1 flags:0x00000006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17df/0x4a40 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6804 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6819
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6876
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:79 [inline]
rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543
netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367
netlink_sendmsg+0xa3c/0xd70 net/netlink/af_netlink.c:1908
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: 0033:0x7f4c36e7fa9c
RSP: 002b:00007ffd73fda510 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f4c37ad4620 RCX: 00007f4c36e7fa9c
RDX: 0000000000000064 RSI: 00007f4c37ad4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffd73fda564 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f4c37ad4670 R15: 0000000000000000
</TASK>
INFO: task syz-executor.1:6866 blocked for more than 145 seconds.
Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:25112 pid:6866 tgid:6866 ppid:5104 flags:0x00000006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17df/0x4a40 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6804 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6819
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6876
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
raw_release+0x1b8/0x8a0 net/can/raw.c:392
__sock_release net/socket.c:659 [inline]
sock_close+0xbc/0x240 net/socket.c:1421
__fput+0x429/0x8a0 fs/file_table.c:411
__do_sys_close fs/open.c:1557 [inline]
__se_sys_close fs/open.c:1542 [inline]
__x64_sys_close+0x7f/0x110 fs/open.c:1542
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f69bea7cc9a
RSP: 002b:00007ffcda843b10 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f69bea7cc9a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007f69bebad980 R08: 0000001b32920000 R09: 00000000000000b3
R10: 000000008197f5f1 R11: 0000000000000293 R12: 00000000001f5051
R13: ffffffffffffffff R14: 00007f69be600000 R15: 00000000001f4d10
</TASK>
INFO: task syz-executor.1:6867 blocked for more than 146 seconds.
Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:22960 pid:6867 tgid:6866 ppid:5104 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17df/0x4a40 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6804 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6819
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6876
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:79 [inline]
rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543
netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367
netlink_sendmsg+0xa3c/0xd70 net/netlink/af_netlink.c:1908
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: 0033:0x7f69bea7dda9
RSP: 002b:00007f69bf7a00c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f69bebabf80 RCX: 00007f69bea7dda9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007f69beaca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f69bebabf80 R15: 00007ffcda843a48
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
Showing all locks held in the system:
5 locks held by kworker/u8:0/10:
#0: ffff888015ad5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3121 [inline]
#0: ffff888015ad5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x8e1/0x1730 kernel/workqueue.c:3226
#1: ffffc900000f7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3121 [inline]
#1: ffffc900000f7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x8e1/0x1730 kernel/workqueue.c:3226
#2: ffffffff8f37aed0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:591
#3: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: cleanup_net+0x6af/0xcc0 net/core/net_namespace.c:627
#4: ffffffff8e136938 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#4: ffffffff8e136938 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939
1 lock held by khungtaskd/29:
#0: ffffffff8e1315a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e1315a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e1315a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:3/50:
#0: ffff888029a5d148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3121 [inline]
#0: ffff888029a5d148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x8e1/0x1730 kernel/workqueue.c:3226
#1: ffffc90000bb7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3121 [inline]
#1: ffffc90000bb7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8e1/0x1730 kernel/workqueue.c:3226
#2: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4147
1 lock held by dhcpcd/4736:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: netlink_dump+0xde/0xc80 net/netlink/af_netlink.c:2211
2 locks held by getty/4826:
#0: ffff88802a27b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by kworker/1:10/4460:
#0: ffff888014c7c948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3121 [inline]
#0: ffff888014c7c948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e1/0x1730 kernel/workqueue.c:3226
#1: ffffc90015c27d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3121 [inline]
#1: ffffc90015c27d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x8e1/0x1730 kernel/workqueue.c:3226
#2: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:281
3 locks held by kworker/1:11/4466:
#0: ffff888014c7c948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3121 [inline]
#0: ffff888014c7c948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e1/0x1730 kernel/workqueue.c:3226
#1: ffffc900144e7d00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3121 [inline]
#1: ffffc900144e7d00 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x8e1/0x1730 kernel/workqueue.c:3226
#2: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:75
4 locks held by kworker/0:12/5934:
#0: ffff8880b943d198 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9428948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffff8880b9429658 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:999
#3: ffffffff947008e0 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x16d/0x510 lib/debugobjects.c:708
7 locks held by syz-executor.2/6350:
#0: ffff88801d9f2420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2862 [inline]
#0: ffff88801d9f2420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x233/0xcb0 fs/read_write.c:586
#1: ffff88809cd73888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff888021f4a788 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8ecc1b48 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
#4: ffff888098ad30e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#4: ffff888098ad30e8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x520 drivers/base/dd.c:1005
#5: ffff888082272250 (&devlink->lock_key#8){+.+.}-{3:3}, at: nsim_drv_probe+0xcb/0xb80 drivers/net/netdevsim/dev.c:1534
#6: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: register_netdevice_notifier_net+0x1a/0xa0 net/core/dev.c:1867
1 lock held by syz-executor.3/6375:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
4 locks held by syz-executor.4/6412:
#0: ffff88801d9f2420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2862 [inline]
#0: ffff88801d9f2420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x233/0xcb0 fs/read_write.c:586
#1: ffff888091235488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffff888021f4a788 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
#3: ffffffff8ecc1b48 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
1 lock held by syz-executor.0/6702:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
2 locks held by syz-executor.1/6866:
#0: ffff8880953cf410 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#0: ffff8880953cf410 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline]
#0: ffff8880953cf410 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x90/0x240 net/socket.c:1421
#1: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: raw_release+0x1b8/0x8a0 net/can/raw.c:392
1 lock held by syz-executor.1/6867:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
1 lock held by syz-executor.2/6871:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
1 lock held by syz-executor.3/6874:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
1 lock held by syz-executor.4/6877:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
1 lock held by syz-executor.1/6880:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
1 lock held by syz-executor.0/6884:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
1 lock held by syz-executor.2/6893:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
1 lock held by syz-executor.3/6896:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
1 lock held by syz-executor.4/6899:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
1 lock held by syz-executor.1/6902:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
1 lock held by syz-executor.0/6907:
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f387548 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6606
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
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:223 [inline]
watchdog+0xfb0/0xff0 kernel/hung_task.c:380
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:242
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 26048 Comm: kworker/u8:5 Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:517 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:1132 [inline]
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0xc2/0x530 kernel/locking/lockdep.c:5725
Code: c7 44 2c 15 f3 f3 43 c6 44 2c 17 f3 0f 1f 44 00 00 65 8b 05 1c 45 92 7e 83 f8 08 0f 83 eb 02 00 00 89 c3 48 89 d8 48 c1 e8 06 <48> 8d 3c c5 a8 a4 86 8f be 08 00 00 00 e8 2c a1 85 00 48 0f a3 1d
RSP: 0018:ffffc9001400f9e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e1315a0
RBP: ffffc9001400fb40 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f0d496 R12: 1ffff92002801f44
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ee92632018 CR3: 0000000078e7a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<TASK>
rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
rcu_read_lock include/linux/rcupdate.h:750 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xec/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:3146 [inline]
process_scheduled_works+0x9d7/0x1730 kernel/workqueue.c:3226
worker_thread+0x86d/0xd70 kernel/workqueue.c:3307
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:242
</TASK>