INFO: task syz.0.16:6427 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.16 state:D stack:27624 pid:6427 tgid:6426 ppid:6234 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7026
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7083
rwsem_down_write_slowpath+0x521/0x1310 kernel/locking/rwsem.c:1185
__down_write_common kernel/locking/rwsem.c:1317 [inline]
__down_write kernel/locking/rwsem.c:1326 [inline]
down_write+0x1d6/0x200 kernel/locking/rwsem.c:1591
inode_lock include/linux/fs.h:980 [inline]
blkdev_fallocate+0x24c/0x430 block/fops.c:911
vfs_fallocate+0x5b4/0x10e0 fs/open.c:342
ksys_fallocate fs/open.c:366 [inline]
__do_sys_fallocate fs/open.c:371 [inline]
__se_sys_fallocate fs/open.c:369 [inline]
__x64_sys_fallocate+0xd5/0x150 fs/open.c:369
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd73e785d29
RSP: 002b:00007fd73f621038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fd73e975fa0 RCX: 00007fd73e785d29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00007fd73e801b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0010000001002000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd73e975fa0 R15: 00007ffd9665e5b8
INFO: task syz.4.20:6436 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.20 state:D stack:28856 pid:6436 tgid:6435 ppid:6251 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7026
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7083
rwsem_down_write_slowpath+0x521/0x1310 kernel/locking/rwsem.c:1185
__down_write_common kernel/locking/rwsem.c:1317 [inline]
__down_write kernel/locking/rwsem.c:1326 [inline]
down_write+0x1d6/0x200 kernel/locking/rwsem.c:1591
inode_lock include/linux/fs.h:980 [inline]
blkdev_fallocate+0x24c/0x430 block/fops.c:911
vfs_fallocate+0x5b4/0x10e0 fs/open.c:342
ksys_fallocate fs/open.c:366 [inline]
__do_sys_fallocate fs/open.c:371 [inline]
__se_sys_fallocate fs/open.c:369 [inline]
__x64_sys_fallocate+0xd5/0x150 fs/open.c:369
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe57e985d29
RSP: 002b:00007fe57f797038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fe57eb75fa0 RCX: 00007fe57e985d29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00007fe57ea01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0010000001002000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe57eb75fa0 R15: 00007ffe130214b8
INFO: task syz.2.18:6442 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.18 state:D stack:28856 pid:6442 tgid:6441 ppid:6236 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7026
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7083
rwsem_down_write_slowpath+0x521/0x1310 kernel/locking/rwsem.c:1185
__down_write_common kernel/locking/rwsem.c:1317 [inline]
__down_write kernel/locking/rwsem.c:1326 [inline]
down_write+0x1d6/0x200 kernel/locking/rwsem.c:1591
inode_lock include/linux/fs.h:980 [inline]
blkdev_fallocate+0x24c/0x430 block/fops.c:911
vfs_fallocate+0x5b4/0x10e0 fs/open.c:342
ksys_fallocate fs/open.c:366 [inline]
__do_sys_fallocate fs/open.c:371 [inline]
__se_sys_fallocate fs/open.c:369 [inline]
__x64_sys_fallocate+0xd5/0x150 fs/open.c:369
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa844785d29
RSP: 002b:00007fa8455e3038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fa844975fa0 RCX: 00007fa844785d29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00007fa844801b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0010000001002000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa844975fa0 R15: 00007ffe173b9eb8
INFO: task syz.3.19:6446 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.19 state:D stack:28072 pid:6446 tgid:6445 ppid:6237 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7026
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7083
rwsem_down_write_slowpath+0x521/0x1310 kernel/locking/rwsem.c:1185
__down_write_common kernel/locking/rwsem.c:1317 [inline]
__down_write kernel/locking/rwsem.c:1326 [inline]
down_write+0x1d6/0x200 kernel/locking/rwsem.c:1591
inode_lock include/linux/fs.h:980 [inline]
blkdev_fallocate+0x24c/0x430 block/fops.c:911
vfs_fallocate+0x5b4/0x10e0 fs/open.c:342
ksys_fallocate fs/open.c:366 [inline]
__do_sys_fallocate fs/open.c:371 [inline]
__se_sys_fallocate fs/open.c:369 [inline]
__x64_sys_fallocate+0xd5/0x150 fs/open.c:369
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa4ebb85d29
RSP: 002b:00007fa4ec997038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fa4ebd75fa0 RCX: 00007fa4ebb85d29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00007fa4ebc01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0010000001002000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa4ebd75fa0 R15: 00007ffc219d99a8
Showing all locks held in the system:
2 locks held by kworker/u8:0/12:
5 locks held by kworker/u8:1/13:
1 lock held by khungtaskd/31:
#0: ffffffff8e3c4460 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e3c4460 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#0: ffffffff8e3c4460 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6775
2 locks held by kworker/u8:7/3521:
3 locks held by kworker/u8:8/4771:
#0: ffff8880b843a398 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:638
#1: ffff8880b8424088 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:220 [inline]
#1: ffff8880b8424088 (psi_seq){-.-.}-{0:0}, at: __schedule+0x1861/0x5de0 kernel/sched/core.c:6923
#2: ffff8880b8425b18 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x127/0x1d0 kernel/time/timer.c:1004
2 locks held by getty/5570:
#0: ffff88814df1d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41b/0x14f0 drivers/tty/n_tty.c:2222
3 locks held by kworker/0:5/6243:
#0: ffff88813ff51948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3238
#1: ffffc90002f57d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3239
#2: ffff88807bf00240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1b6/0x6da0 drivers/net/netdevsim/fib.c:1490
2 locks held by syz.1.17/6376:
1 lock held by syz.0.16/6427:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.4.20/6436:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.2.18/6442:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.3.19/6446:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.5.21/6582:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.6.22/6679:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.7.23/6681:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.9.25/6683:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.8.24/6685:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.1.26/6707:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.0.27/6791:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.3.30/6795:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.4.28/6797:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.2.29/6799:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.5.31/6835:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.6.32/6950:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.9.35/6952:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.8.34/6960:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.7.33/6962:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.1.36/6968:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.0.37/7054:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.4.39/7081:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.2.40/7085:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.3.38/7087:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.5.41/7089:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.6.42/7159:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.9.43/7203:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.1.46/7208:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.8.45/7227:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.7.44/7229:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.0.47/7253:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.4.48/7337:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.5.49/7346:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.3.50/7348:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.2.51/7350:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
1 lock held by syz.6.52/7380:
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline]
#0: ffff88802644aa28 (&sb->s_type->i_mutex_key#7){++++}-{4:4}, at: blkdev_fallocate+0x24c/0x430 block/fops.c:911
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]
watchdog+0xf3f/0x1170 kernel/hung_task.c:495
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7057 Comm: kworker/u8:9 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:check_preemption_disabled+0x24/0xe0 lib/smp_processor_id.c:54
Code: 90 90 90 90 90 90 41 54 55 53 48 83 ec 08 65 8b 1d f5 c5 3d 08 65 8b 05 ea c5 3d 08 a9 ff ff ff 7f 74 0f 48 83 c4 08 89 d8 5b <5d> 41 5c e9 44 ed 02 00 9c 58 f6 c4 02 74 ea 48 89 fd 65 48 8b 05
RSP: 0018:ffffc90005877588 EFLAGS: 00000092
RAX: 0000000000000001 RBX: ffffffff8e3c4460 RCX: 00000000414ce77c
RDX: 0000000000000000 RSI: ffffffff8dadd969 RDI: ffffffff8bf1dec0
RBP: 0000000000000002 R08: 98e8c81909d2a7f1 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888124ad8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ef52588008 CR3: 0000000033f5b000 CR4: 00000000003526f0
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:470 [inline]
lock_acquire kernel/locking/lockdep.c:5870 [inline]
lock_acquire+0x189/0x350 kernel/locking/lockdep.c:5825
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:867 [inline]
class_rcu_constructor include/linux/rcupdate.h:1195 [inline]
unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
kasan_save_track+0x14/0x30 mm/kasan/common.c:77
poison_kmalloc_redzone mm/kasan/common.c:400 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:417
kasan_kmalloc include/linux/kasan.h:262 [inline]
__do_kmalloc_node mm/slub.c:5634 [inline]
__kmalloc_node_track_caller_noprof+0x345/0x8a0 mm/slub.c:5743
kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:601
__alloc_skb+0x166/0x380 net/core/skbuff.c:670
alloc_skb include/linux/skbuff.h:1383 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:763 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]
nsim_dev_trap_report_work+0x2b1/0xcf0 drivers/net/netdevsim/dev.c:866
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
process_scheduled_works kernel/workqueue.c:3346 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245