INFO: task kworker/u8:4:81 blocked for more than 143 seconds.
Not tainted 6.12.0-rc5-syzkaller-00181-g6c52d4da1c74 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:4 state:D stack:19096 pid:81 tgid:81 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:4)
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x185a/0x4b70 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
jfs_commit_inode+0x24a/0x590 fs/jfs/inode.c:102
jfs_write_inode+0x143/0x220 fs/jfs/inode.c:132
write_inode fs/fs-writeback.c:1503 [inline]
__writeback_single_inode+0x711/0x10d0 fs/fs-writeback.c:1723
writeback_sb_inodes+0x80c/0x1370 fs/fs-writeback.c:1954
__writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:2025
wb_writeback+0x42f/0xbd0 fs/fs-writeback.c:2136
wb_check_background_flush fs/fs-writeback.c:2206 [inline]
wb_do_writeback fs/fs-writeback.c:2294 [inline]
wb_workfn+0xc58/0x1090 fs/fs-writeback.c:2321
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.4.81:6757 blocked for more than 144 seconds.
Not tainted 6.12.0-rc5-syzkaller-00181-g6c52d4da1c74 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.81 state:D stack:24464 pid:6757 tgid:6746 ppid:5828 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x185a/0x4b70 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1694
inode_lock_nested include/linux/fs.h:850 [inline]
filename_create+0x260/0x540 fs/namei.c:4026
do_mknodat+0x18b/0x5b0 fs/namei.c:4172
__do_sys_mknodat fs/namei.c:4213 [inline]
__se_sys_mknodat fs/namei.c:4210 [inline]
__x64_sys_mknodat+0xa7/0xc0 fs/namei.c:4210
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fccc3f7e719
RSP: 002b:00007fccc4e0d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000103
RAX: ffffffffffffffda RBX: 00007fccc4136058 RCX: 00007fccc3f7e719
RDX: 0000000000006004 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007fccc3ff132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000709 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fccc4136058 R15: 00007ffc70f59d98
INFO: task syz.4.81:6810 blocked for more than 144 seconds.
Not tainted 6.12.0-rc5-syzkaller-00181-g6c52d4da1c74 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.81 state:D stack:27424 pid:6810 tgid:6746 ppid:5828 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x185a/0x4b70 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1694
inode_lock_nested include/linux/fs.h:850 [inline]
lock_rename fs/namei.c:3161 [inline]
do_renameat2+0x62c/0x13f0 fs/namei.c:5105
__do_sys_rename fs/namei.c:5217 [inline]
__se_sys_rename fs/namei.c:5215 [inline]
__x64_sys_rename+0x82/0x90 fs/namei.c:5215
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fccc3f7e719
RSP: 002b:00007fccc4dec038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fccc4136130 RCX: 00007fccc3f7e719
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 00000000200000c0
RBP: 00007fccc3ff132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fccc4136130 R15: 00007ffc70f59d98
INFO: task syz.4.81:6811 blocked for more than 145 seconds.
Not tainted 6.12.0-rc5-syzkaller-00181-g6c52d4da1c74 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.81 state:D stack:27424 pid:6811 tgid:6746 ppid:5828 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x185a/0x4b70 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1694
inode_lock_nested include/linux/fs.h:850 [inline]
filename_create+0x260/0x540 fs/namei.c:4026
do_symlinkat+0xf9/0x3a0 fs/namei.c:4634
__do_sys_symlink fs/namei.c:4662 [inline]
__se_sys_symlink fs/namei.c:4660 [inline]
__x64_sys_symlink+0x7a/0x90 fs/namei.c:4660
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fccc3f7e719
RSP: 002b:00007fccc4dcb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 00007fccc4136208 RCX: 00007fccc3f7e719
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000020000180
RBP: 00007fccc3ff132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fccc4136208 R15: 00007ffc70f59d98
Showing all locks held in the system:
2 locks held by kworker/u8:1/12:
1 lock held by ksoftirqd/0/16:
#0: ffff8880b863ea58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
1 lock held by khungtaskd/30:
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720
3 locks held by kworker/1:1/46:
#0: ffff88801ac81148 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac81148 ((wq_completion)events_long){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90000b67d00 ((work_completion)(&c->read_only_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90000b67d00 ((work_completion)(&c->read_only_work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffff888055880278 (&c->state_lock){+.+.}-{3:3}, at: bch2_fs_read_only_work+0x25/0x40 fs/bcachefs/super.c:392
7 locks held by kworker/u8:3/52:
#0: ffff88801baeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801baeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90000bc7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90000bc7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcb43d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:580
#3: ffff8880673870e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff8880673870e8 (&dev->mutex){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline]
#3: ffff8880673870e8 (&dev->mutex){....}-{3:3}, at: devlink_pernet_pre_exit+0x13b/0x440 net/devlink/core.c:506
#4: ffff88805d0d8250 (&devlink->lock_key#9){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:276 [inline]
#4: ffff88805d0d8250 (&devlink->lock_key#9){+.+.}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline]
#4: ffff88805d0d8250 (&devlink->lock_key#9){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x14d/0x440 net/devlink/core.c:506
#5: ffffffff8fcc0f08 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x71/0x5c0 drivers/net/netdevsim/netdev.c:773
#6: ffffffff8e93d338 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#6: ffffffff8e93d338 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:976
4 locks held by kworker/u8:4/81:
#0: ffff88802068b948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88802068b948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc900022cfd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900022cfd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffff88803022e0e0 (&type->s_umount_key#51){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562
#3: ffff88807d9aafe0 (&jfs_ip->commit_mutex){+.+.}-{3:3}, at: jfs_commit_inode+0x24a/0x590 fs/jfs/inode.c:102
3 locks held by kworker/u8:7/1157:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90003e77d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90003e77d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcc0f08 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
3 locks held by kworker/u8:10/3577:
#0: ffff888030784148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff888030784148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc9000c81fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc9000c81fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcc0f08 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4196
1 lock held by dhcpcd/5500:
#0: ffffffff8fcc0f08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcc0f08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
2 locks held by getty/5590:
#0: ffff88803564a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900032532f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
4 locks held by kworker/1:3/5883:
#0: ffff888032263948 ((wq_completion)bcachefs_write_ref){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff888032263948 ((wq_completion)bcachefs_write_ref){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90004217d00 ((work_completion)(&c->snapshot_delete_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90004217d00 ((work_completion)(&c->snapshot_delete_work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffff888055884398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:151 [inline]
#2: ffff888055884398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:250 [inline]
#2: ffff888055884398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7de/0xd20 fs/bcachefs/btree_iter.c:3215
#3: ffff8880558a66d0 (&c->gc_lock){++++}-{3:3}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1202
3 locks held by kworker/1:5/5911:
#0: ffff88801ac80948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac80948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc900042a7d00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900042a7d00 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcc0f08 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
2 locks held by syz-executor/6263:
#0: ffff88804acd60e0 (&type->s_umount_key#94){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88804acd60e0 (&type->s_umount_key#94){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88804acd60e0 (&type->s_umount_key#94){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffff888055880278 (&c->state_lock){+.+.}-{3:3}, at: __bch2_fs_stop+0xfd/0x5c0 fs/bcachefs/super.c:619
4 locks held by syz.4.81/6748:
2 locks held by syz.4.81/6757:
#0: ffff88803022e420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88807d9ab390 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff88807d9ab390 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:4026
2 locks held by syz.4.81/6810:
#0: ffff88803022e420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88807d9ab390 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff88807d9ab390 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3161 [inline]
#1: ffff88807d9ab390 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: do_renameat2+0x62c/0x13f0 fs/namei.c:5105
2 locks held by syz.4.81/6811:
#0: ffff88803022e420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88807d9ab390 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff88807d9ab390 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:4026
1 lock held by syz-executor/7896:
#0: ffffffff8fcc0f08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcc0f08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
7 locks held by syz-executor/8027:
#0: ffff88802f344420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline]
#0: ffff88802f344420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x225/0xd30 fs/read_write.c:679
#1: ffff88802fe48088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1ea/0x500 fs/kernfs/file.c:325
#2: ffff888026cb31e8 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20e/0x500 fs/kernfs/file.c:326
#3: ffffffff8f55ed48 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
#4: ffff8880203dd0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff8880203dd0e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff8880203dd0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1293
#5: ffff8880203de250 (&devlink->lock_key#5){+.+.}-{3:3}, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1675
#6: ffffffff8fcc0f08 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x71/0x5c0 drivers/net/netdevsim/netdev.c:773
1 lock held by syz-executor/8309:
#0: ffffffff8fcc0f08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcc0f08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc5-syzkaller-00181-g6c52d4da1c74 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5881 Comm: kworker/0:6 Not tainted 6.12.0-rc5-syzkaller-00181-g6c52d4da1c74 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_power_efficient gc_worker
RIP: 0010:__lock_acquire+0x19b/0x2050 kernel/locking/lockdep.c:5108
Code: c0 f6 c0 93 48 29 c3 48 c1 fb 03 48 bf 29 5c 8f c2 f5 28 5c 8f 48 0f af fb 41 89 f8 83 bc 24 e8 00 00 00 00 0f 85 30 01 00 00 <85> d2 0f 84 28 01 00 00 48 8b 44 24 30 48 8d 98 e0 0a 00 00 83 fa
RSP: 0018:ffffc900041f7750 EFLAGS: 00000046
RAX: ffffffff93c0f6c0 RBX: 0000000000007387 RCX: ffffffff9a39e903
RDX: 0000000000000003 RSI: dffffc0000000000 RDI: 000000000000049f
RBP: ffff8880316b28d8 R08: 000000000000049f R09: 0000000000000001
R10: dffffc0000000000 R11: fffffbfff2037af6 R12: ffff8880316b1e00
R13: 0000000000000001 R14: 0000000000000000 R15: ffffffff901c7a28
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0024cab378 CR3: 000000007e89e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
seqcount_lockdep_reader_access+0x13f/0x220 include/linux/seqlock.h:73
nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:345 [inline]
gc_worker+0x316/0x1530 net/netfilter/nf_conntrack_core.c:1534
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244