INFO: task syz.4.50:4597 blocked for more than 143 seconds.
Not tainted 6.1.138-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.50 state:D stack:27904 pid:4597 ppid:4415 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
schedule+0xb9/0x180 kernel/sched/core.c:6637
io_schedule+0x7c/0xd0 kernel/sched/core.c:8797
bit_wait_io+0xd/0xc0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0xd8/0x580 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0x11f/0x160 kernel/sched/wait_bit.c:117
wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
__lock_buffer fs/buffer.c:69 [inline]
lock_buffer include/linux/buffer_head.h:397 [inline]
discard_buffer fs/buffer.c:1458 [inline]
block_invalidate_folio+0x386/0x9e0 fs/buffer.c:1515
folio_invalidate mm/truncate.c:158 [inline]
truncate_cleanup_folio+0x218/0x5e0 mm/truncate.c:178
truncate_inode_pages_range+0x237/0xff0 mm/truncate.c:368
kill_bdev block/bdev.c:76 [inline]
set_blocksize+0x2da/0x350 block/bdev.c:152
swsusp_check+0xf6/0x450 kernel/power/swap.c:1529
software_resume+0x10e/0x6a0 kernel/power/hibernate.c:1000
resume_store+0xf7/0x1a0 kernel/power/hibernate.c:1205
kernfs_fop_write_iter+0x379/0x4c0 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2265 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x44c/0x960 fs/read_write.c:584
ksys_write+0x143/0x240 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fce0d58e969
RSP: 002b:00007fce0e4ac038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fce0d7b5fa0 RCX: 00007fce0d58e969
RDX: 00000000fffffd65 RSI: 0000200000000000 RDI: 0000000000000003
RBP: 00007fce0d610ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fce0d7b5fa0 R15: 00007ffe92061938
INFO: task syz.1.51:4600 blocked for more than 144 seconds.
Not tainted 6.1.138-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.51 state:D stack:27904 pid:4600 ppid:4401 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
schedule+0xb9/0x180 kernel/sched/core.c:6637
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747
lock_system_sleep+0x45/0x60 kernel/power/main.c:28
resume_store+0xb7/0x1a0 kernel/power/hibernate.c:1198
kernfs_fop_write_iter+0x379/0x4c0 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2265 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x44c/0x960 fs/read_write.c:584
ksys_write+0x143/0x240 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f833638e969
RSP: 002b:00007f8337162038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f83365b5fa0 RCX: 00007f833638e969
RDX: 00000000fffffd65 RSI: 0000200000000000 RDI: 0000000000000003
RBP: 00007f8336410ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f83365b5fa0 R15: 00007ffdfd9586b8
INFO: task syz.2.52:4605 blocked for more than 144 seconds.
Not tainted 6.1.138-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.52 state:D stack:27904 pid:4605 ppid:4405 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
schedule+0xb9/0x180 kernel/sched/core.c:6637
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747
lock_system_sleep+0x45/0x60 kernel/power/main.c:28
resume_store+0xb7/0x1a0 kernel/power/hibernate.c:1198
kernfs_fop_write_iter+0x379/0x4c0 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2265 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x44c/0x960 fs/read_write.c:584
ksys_write+0x143/0x240 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f0af7b8e969
RSP: 002b:00007f0af89df038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0af7db5fa0 RCX: 00007f0af7b8e969
RDX: 00000000fffffd65 RSI: 0000200000000000 RDI: 0000000000000003
RBP: 00007f0af7c10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0af7db5fa0 R15: 00007ffcbd7d80e8
INFO: task syz.3.19:4609 blocked for more than 145 seconds.
Not tainted 6.1.138-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.19 state:D stack:27656 pid:4609 ppid:4409 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
schedule+0xb9/0x180 kernel/sched/core.c:6637
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x555/0xaf0 kernel/locking/mutex.c:747
lock_system_sleep+0x45/0x60 kernel/power/main.c:28
resume_store+0xb7/0x1a0 kernel/power/hibernate.c:1198
kernfs_fop_write_iter+0x379/0x4c0 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2265 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x44c/0x960 fs/read_write.c:584
ksys_write+0x143/0x240 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f2a75b8e969
RSP: 002b:00007f2a76a5d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f2a75db5fa0 RCX: 00007f2a75b8e969
RDX: 00000000fffffd65 RSI: 0000200000000000 RDI: 0000000000000003
RBP: 00007f2a75c10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2a75db5fa0 R15: 00007ffd2dfbb598
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c92b2f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c92bb10 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
#0: ffffffff8c92a960 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8c92a960 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff8c92a960 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6513
2 locks held by getty/4014:
#0: ffff888030233098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc9000325e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41b/0x1380 drivers/tty/n_tty.c:2198
3 locks held by kworker/0:0/4305:
#0: ffff88802f9c6538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267
#1: ffffc90003eb7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267
#2: ffffffff8db33fe8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x14d0 net/ipv6/addrconf.c:4134
2 locks held by kworker/0:4/4356:
#0: ffff888017472138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267
#1: ffffc90004097d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267
3 locks held by kworker/1:10/4369:
#0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267
#1: ffffc90004417d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267
#2: ffff88805a569240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x26b/0x32b0 drivers/net/netdevsim/fib.c:1491
3 locks held by kworker/1:12/4372:
#0: ffff88802f9c6538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267
#1: ffffc90004447d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267
#2: ffffffff8db33fe8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x14d0 net/ipv6/addrconf.c:4134
2 locks held by syz.0.16/4595:
5 locks held by syz.4.50/4597:
#0: ffff88807745efe8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff888073252488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex/1){+.+.}-{3:3}, at: software_resume+0x88/0x6a0 kernel/power/hibernate.c:953
5 locks held by syz.1.51/4600:
#0: ffff88802cf4f768 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88805e6c1888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.2.52/4605:
#0: ffff88807bbc94e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff888029165c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.3.19/4609:
#0: ffff8880298994e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff888030e2bc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
3 locks held by kworker/u4:8/4668:
#0: ffff888017479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267
#1: ffffc90003a77d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267
#2: ffffffff8db33fe8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:263
5 locks held by syz.5.53/4711:
#0: ffff88802649c5e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff888078ca0c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.9.57/4716:
#0: ffff88807da9efe8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88807c161088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.6.54/4719:
#0: ffff8880792a7268 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88807dc0ec88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.8.56/4723:
#0: ffff88807742bc68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff888078373488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.7.55/4727:
#0: ffff88802fb8b9e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88807e6b2088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.0.58/4787:
#0: ffff88802fbeeae8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff8880797d2c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.1.59/4814:
#0: ffff88807cd4dc68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88807be0e888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.2.60/4817:
#0: ffff88807c44efe8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88807d6d5088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.3.61/4819:
#0: ffff88802ff6cd68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88807beff488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.4.62/4826:
#0: ffff8880738c0368 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff888028291888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.5.63/4848:
#0: ffff888073c77768 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff8880732db088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.6.64/4887:
#0: ffff88807bf9ed68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff8880507c3c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.9.67/4937:
#0: ffff888078152d68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88807befd488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.8.66/4944:
#0: ffff88802d39a5e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88804e987c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.7.65/4947:
#0: ffff888023cf6368 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88807dbde088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.0.68/4966:
#0: ffff88807cafc5e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88807852b088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.1.69/4974:
#0: ffff88807c9a34e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88807983bc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.2.70/5022:
#0: ffff88807cda34e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff8880269fa888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.4.72/5044:
#0: ffff8880243d3c68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88804b82ac88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.3.71/5045:
#0: ffff8880243d2d68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88804b82b088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.5.73/5070:
#0: ffff888079379268 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88804a28dc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.6.74/5080:
#0: ffff88807bf20ae8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff888018eda088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.9.75/5099:
#0: ffff888027543268 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88807c81f488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
1 lock held by syz-executor/5128:
#0: ffffffff8db33fe8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
#0: ffffffff8db33fe8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x740/0xed0 net/core/rtnetlink.c:6150
1 lock held by syz-executor/5146:
#0: ffffffff8db33fe8 (rtnl_mutex
){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x740/0xed0 net/core/rtnetlink.c:6150
5 locks held by syz.8.77/5158:
#0: ffff88802930e868 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff888046010088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
5 locks held by syz.7.76/5161:
#0: ffff8880268b60e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1040
#1: ffff88807e0aa460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x256/0x960 fs/read_write.c:580
#2: ffff88807d174c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e5/0x4c0 fs/kernfs/file.c:325
#3: ffff88814226b008 (kn->active#61){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x208/0x4c0 fs/kernfs/file.c:326
#4: ffffffff8c7dfc48 (system_transition_mutex){+.+.}-{3:3}, at: lock_system_sleep+0x45/0x60 kernel/power/main.c:28
2 locks held by syz-executor/5165:
#0: ffffffff8db27350 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x32e/0x5b0 net/core/net_namespace.c:504
#1: ffffffff8db33fe8 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x7d/0x210 net/ipv4/nexthop.c:3606
2 locks held by dhcpcd/5168:
#0: ffff8880569f2610 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#0: ffff8880569f2610 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:653 [inline]
#0: ffff8880569f2610 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x90/0x240 net/socket.c:1400
#1: ffffffff8c930638 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#1: ffffffff8c930638 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x830 kernel/rcu/tree_exp.h:962
2 locks held by dhcpcd/5169:
#0: ffff88804e7f4410 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#0: ffff88804e7f4410 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:653 [inline]
#0: ffff88804e7f4410 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x90/0x240 net/socket.c:1400
#1: ffffffff8c930638 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#1: ffffffff8c930638 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x346/0x830 kernel/rcu/tree_exp.h:962
1 lock held by dhcpcd/5170:
#0: ffff88805c5a2130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1756 [inline]
#0: ffff88805c5a2130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xce0 net/packet/af_packet.c:3249
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.138-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call Trace:
dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106
nmi_cpu_backtrace+0x3f4/0x470 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1d4/0x450 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xeee/0xf30 kernel/hung_task.c:377
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3612 Comm: klogd Not tainted 6.1.138-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:cmpxchg_double_slab+0x3/0x310 mm/slub.c:548
Code: ff ff 4c 89 e7 48 c7 c6 ba 73 2f 8c e8 16 ee ea ff 0f 0b 48 89 df 48 c7 c6 ba 73 2f 8c e8 05 ee ea ff 0f 0b 0f 1f 00 55 41 57 <41> 56 41 55 41 54 53 48 83 ec 10 4c 89 c3 49 89 cf 49 89 d4 49 89
RSP: 0018:ffffc900032876b0 EFLAGS: 00000206
RAX: 0000000000000000 RBX: ffffea0001433700 RCX: 00000000800c000a
RDX: ffff888050cdc280 RSI: ffffea0001433700 RDI: ffff8880177cb500
RBP: 0000000000000000 R08: ffff888050cdc3c0 R09: 00000000800c0009
R10: ffffed1002ef0c79 R11: 1ffff11002ef0c78 R12: 00000000800c000a
R13: 00000000800c0009 R14: ffff8880177cb500 R15: ffff888050cdc280
FS: 00007fc3d4b9fc80(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b3b4f27168 CR3: 0000000030e61000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__slab_free+0xa1/0x290 mm/slub.c:3520
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x144/0x160 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x1e/0x80 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
kmem_cache_alloc_node+0x14d/0x320 mm/slub.c:3443
__alloc_skb+0xfc/0x7e0 net/core/skbuff.c:505
alloc_skb include/linux/skbuff.h:1271 [inline]
alloc_skb_with_frags+0xa7/0x710 net/core/skbuff.c:6162
sock_alloc_send_pskb+0x853/0x980 net/core/sock.c:2750
unix_dgram_sendmsg+0x57e/0x18d0 net/unix/af_unix.c:1918
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg net/socket.c:730 [inline]
__sys_sendto+0x44f/0x5c0 net/socket.c:2153
__do_sys_sendto net/socket.c:2165 [inline]
__se_sys_sendto net/socket.c:2161 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:2161
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc3d4cef407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffcd7fb2df0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fc3d4b9fc80 RCX: 00007fc3d4cef407
RDX: 0000000000000049 RSI: 00007ffcd7fb2f30 RDI: 0000000000000003
RBP: 00007ffcd7fb3360 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffcd7fb3378
R13: 00007ffcd7fb2f30 R14: 000000000000002e R15: 00007ffcd7fb2f30