[syzbot] [reiserfs?] INFO: task hung in reiserfs_sync_fs

syzbot
2022-12-21T13:12:46Z

Hello,

syzbot found the following issue on:

HEAD commit: 77856d911a8c Merge tag 'arm64-fixes' of git://git.kernel.o..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=159ff477880000
kernel config: https://syzkaller.appspot.com/x/.config?x=334a10f27a9ee2e0
dashboard link: https://syzkaller.appspot.com/bug?extid=4dadbee41d087d9c6234
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1262b2e7880000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11e552b7880000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/c104bd9fd890/disk-77856d91.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3ab4bff3f176/vmlinux-77856d91.xz
kernel image: https://storage.googleapis.com/syzbot-assets/207eba05f0ef/bzImage-77856d91.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/b0b4c97d530b/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+4dadbee41d087d9c6234@syzkaller.appspotmail.com

INFO: task kworker/0:0:7 blocked for more than 143 seconds.
Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0 state:D stack:27608 pid:7 ppid:2 flags:0x00004000
Workqueue: events_long flush_old_commits
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747
reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
reiserfs_sync_fs+0x81/0x130 fs/reiserfs/super.c:76
flush_old_commits+0xfb/0x200 fs/reiserfs/super.c:111
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x669/0x1090 kernel/workqueue.c:2436
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task kworker/1:0:22 blocked for more than 143 seconds.
Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0 state:D stack:28264 pid:22 ppid:2 flags:0x00004000
Workqueue: events_long flush_old_commits
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747
reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
reiserfs_sync_fs+0x81/0x130 fs/reiserfs/super.c:76
flush_old_commits+0xfb/0x200 fs/reiserfs/super.c:111
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x669/0x1090 kernel/workqueue.c:2436
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task kworker/1:1:26 blocked for more than 143 seconds.
Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1 state:D stack:28512 pid:26 ppid:2 flags:0x00004000
Workqueue: events_long flush_old_commits
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747
reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
reiserfs_sync_fs+0x81/0x130 fs/reiserfs/super.c:76
flush_old_commits+0xfb/0x200 fs/reiserfs/super.c:111
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x669/0x1090 kernel/workqueue.c:2436
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task kworker/1:3:2689 blocked for more than 144 seconds.
Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:3 state:D stack:28888 pid:2689 ppid:2 flags:0x00004000
Workqueue: events_long flush_old_commits
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747
reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
reiserfs_sync_fs+0x81/0x130 fs/reiserfs/super.c:76
flush_old_commits+0xfb/0x200 fs/reiserfs/super.c:111
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x669/0x1090 kernel/workqueue.c:2436
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task syz-executor214:5087 blocked for more than 144 seconds.
Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor214 state:D stack:24592 pid:5087 ppid:5071 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
rwsem_down_write_slowpath+0x600/0x12e0 kernel/locking/rwsem.c:1190
__down_write_common kernel/locking/rwsem.c:1305 [inline]
__down_write_common kernel/locking/rwsem.c:1302 [inline]
__down_write kernel/locking/rwsem.c:1314 [inline]
down_write+0x1e8/0x220 kernel/locking/rwsem.c:1563
inode_lock include/linux/fs.h:756 [inline]
reiserfs_sync_file+0xab/0x320 fs/reiserfs/file.c:155
vfs_fsync_range+0x13e/0x230 fs/sync.c:188
generic_write_sync include/linux/fs.h:2882 [inline]
generic_file_write_iter+0x25a/0x350 mm/filemap.c:3936
call_write_iter include/linux/fs.h:2186 [inline]
do_iter_readv_writev+0x20b/0x3b0 fs/read_write.c:735
do_iter_write+0x182/0x700 fs/read_write.c:861
vfs_iter_write+0x74/0xa0 fs/read_write.c:902
iter_file_splice_write+0x745/0xc90 fs/splice.c:686
do_splice_from fs/splice.c:764 [inline]
direct_splice_actor+0x114/0x180 fs/splice.c:931
splice_direct_to_actor+0x335/0x8a0 fs/splice.c:886
do_splice_direct+0x1ab/0x280 fs/splice.c:974
do_sendfile+0xb19/0x1270 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1309
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe8fc345669
RSP: 002b:00007fe8fc2f12f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fe8fc3cb7a0 RCX: 00007fe8fc345669
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fe8fc3981b8 R08: 0000000000000000 R09: 0000000000000000
R10: 000080001d00c0d0 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 7366726573696572 R14: 65732f636f72702f R15: 00007fe8fc3cb7a8
</TASK>
INFO: task syz-executor214:5098 blocked for more than 144 seconds.
Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor214 state:D stack:23488 pid:5098 ppid:5071 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747
reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
reiserfs_get_block+0x1f6/0x4150 fs/reiserfs/inode.c:680
do_mpage_readpage+0x765/0x19e0 fs/mpage.c:208
mpage_readahead+0x344/0x580 fs/mpage.c:361
read_pages+0x1a2/0xd40 mm/readahead.c:161
page_cache_ra_unbounded+0x477/0x5e0 mm/readahead.c:270
do_page_cache_ra mm/readahead.c:300 [inline]
page_cache_ra_order+0x6ec/0xa00 mm/readahead.c:560
ondemand_readahead+0x6b3/0x1000 mm/readahead.c:682
page_cache_sync_ra+0x1c9/0x200 mm/readahead.c:709
page_cache_sync_readahead include/linux/pagemap.h:1210 [inline]
filemap_get_pages+0x2ca/0x16b0 mm/filemap.c:2600
filemap_read+0x315/0xc00 mm/filemap.c:2694
generic_file_read_iter+0x3ad/0x5b0 mm/filemap.c:2840
__kernel_read+0x2ca/0x7c0 fs/read_write.c:428
integrity_kernel_read+0x7f/0xb0 security/integrity/iint.c:199
ima_calc_file_hash_tfm+0x2aa/0x3b0 security/integrity/ima/ima_crypto.c:485
ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
ima_calc_file_hash+0x195/0x4a0 security/integrity/ima/ima_crypto.c:573
ima_collect_measurement+0x642/0x7b0 security/integrity/ima/ima_api.c:292
process_measurement+0xd23/0x18b0 security/integrity/ima/ima_main.c:339
ima_file_check+0xb0/0x100 security/integrity/ima/ima_main.c:519
do_open fs/namei.c:3559 [inline]
path_openat+0x15f1/0x2a50 fs/namei.c:3714
do_filp_open+0x1ba/0x410 fs/namei.c:3741
do_sys_openat2+0x16d/0x4c0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_open fs/open.c:1334 [inline]
__se_sys_open fs/open.c:1330 [inline]
__x64_sys_open+0x11d/0x1c0 fs/open.c:1330
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe8fc345669
RSP: 002b:00007fe8f42d02f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fe8fc3cb7b0 RCX: 00007fe8fc345669
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000200
RBP: 00007fe8fc3981b8 R08: 00007fe8f42d0700 R09: 0000000000000000
R10: 00007fe8f42d0700 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 7366726573696572 R14: 65732f636f72702f R15: 00007fe8fc3cb7b8
</TASK>
INFO: task syz-executor214:5103 blocked for more than 145 seconds.
Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor214 state:D stack:28648 pid:5103 ppid:5071 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
io_schedule+0xbe/0x130 kernel/sched/core.c:8811
folio_wait_bit_common+0x394/0x9b0 mm/filemap.c:1297
__folio_lock mm/filemap.c:1660 [inline]
folio_lock include/linux/pagemap.h:938 [inline]
folio_lock include/linux/pagemap.h:934 [inline]
__filemap_get_folio+0xb71/0xd80 mm/filemap.c:1932
pagecache_get_page+0x2e/0x280 mm/folio-compat.c:98
find_or_create_page include/linux/pagemap.h:612 [inline]
grab_cache_page include/linux/pagemap.h:742 [inline]
grab_tail_page fs/reiserfs/inode.c:2201 [inline]
reiserfs_truncate_file+0x5bb/0x1070 fs/reiserfs/inode.c:2269
reiserfs_setattr+0xed3/0x1460 fs/reiserfs/inode.c:3395
notify_change+0xca7/0x1420 fs/attr.c:482
do_truncate+0x143/0x200 fs/open.c:65
vfs_truncate+0x3c2/0x490 fs/open.c:111
do_sys_truncate.part.0+0x11e/0x140 fs/open.c:134
do_sys_truncate fs/open.c:128 [inline]
__do_sys_truncate fs/open.c:146 [inline]
__se_sys_truncate fs/open.c:144 [inline]
__x64_sys_truncate+0x6d/0xa0 fs/open.c:144
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe8fc345669
RSP: 002b:00007fe8f42af2f8 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007fe8fc3cb7c0 RCX: 00007fe8fc345669
RDX: 00007fe8f42af700 RSI: 0000000000000006 RDI: 00000000200001c0
RBP: 00007fe8fc3981b8 R08: 00007fe8f42af700 R09: 0000000000000000
R10: 00007fe8f42af700 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 7366726573696572 R14: 65732f636f72702f R15: 00007fe8fc3cb7c8
</TASK>
INFO: task syz-executor214:5120 blocked for more than 145 seconds.
Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor214 state:D stack:24376 pid:5120 ppid:5069 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
rwsem_down_write_slowpath+0x600/0x12e0 kernel/locking/rwsem.c:1190
__down_write_common kernel/locking/rwsem.c:1305 [inline]
__down_write_common kernel/locking/rwsem.c:1302 [inline]
__down_write kernel/locking/rwsem.c:1314 [inline]
down_write+0x1e8/0x220 kernel/locking/rwsem.c:1563
inode_lock include/linux/fs.h:756 [inline]
generic_file_write_iter+0x92/0x350 mm/filemap.c:3929
call_write_iter include/linux/fs.h:2186 [inline]
do_iter_readv_writev+0x20b/0x3b0 fs/read_write.c:735
do_iter_write+0x182/0x700 fs/read_write.c:861
vfs_iter_write+0x74/0xa0 fs/read_write.c:902
iter_file_splice_write+0x745/0xc90 fs/splice.c:686
do_splice_from fs/splice.c:764 [inline]
direct_splice_actor+0x114/0x180 fs/splice.c:931
splice_direct_to_actor+0x335/0x8a0 fs/splice.c:886
do_splice_direct+0x1ab/0x280 fs/splice.c:974
do_sendfile+0xb19/0x1270 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1309
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe8fc345669
RSP: 002b:00007fe8fc2f12f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fe8fc3cb7a0 RCX: 00007fe8fc345669
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fe8fc3981b8 R08: 0000000000000000 R09: 0000000000000000
R10: 000080001d00c0d0 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 7366726573696572 R14: 65732f636f72702f R15: 00007fe8fc3cb7a8
</TASK>
INFO: task syz-executor214:5127 blocked for more than 146 seconds.
Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor214 state:D stack:23752 pid:5127 ppid:5069 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6690
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747
reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
reiserfs_get_block+0x1f6/0x4150 fs/reiserfs/inode.c:680
do_mpage_readpage+0x765/0x19e0 fs/mpage.c:208
mpage_readahead+0x344/0x580 fs/mpage.c:361
read_pages+0x1a2/0xd40 mm/readahead.c:161
page_cache_ra_unbounded+0x477/0x5e0 mm/readahead.c:270
do_page_cache_ra mm/readahead.c:300 [inline]
page_cache_ra_order+0x6ec/0xa00 mm/readahead.c:560
ondemand_readahead+0x6b3/0x1000 mm/readahead.c:682
page_cache_sync_ra+0x1c9/0x200 mm/readahead.c:709
page_cache_sync_readahead include/linux/pagemap.h:1210 [inline]
filemap_get_pages+0x2ca/0x16b0 mm/filemap.c:2600
filemap_read+0x315/0xc00 mm/filemap.c:2694
generic_file_read_iter+0x3ad/0x5b0 mm/filemap.c:2840
__kernel_read+0x2ca/0x7c0 fs/read_write.c:428
integrity_kernel_read+0x7f/0xb0 security/integrity/iint.c:199
ima_calc_file_hash_tfm+0x2aa/0x3b0 security/integrity/ima/ima_crypto.c:485
ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
ima_calc_file_hash+0x195/0x4a0 security/integrity/ima/ima_crypto.c:573
ima_collect_measurement+0x642/0x7b0 security/integrity/ima/ima_api.c:292
process_measurement+0xd23/0x18b0 security/integrity/ima/ima_main.c:339
ima_file_check+0xb0/0x100 security/integrity/ima/ima_main.c:519
do_open fs/namei.c:3559 [inline]
path_openat+0x15f1/0x2a50 fs/namei.c:3714
do_filp_open+0x1ba/0x410 fs/namei.c:3741
do_sys_openat2+0x16d/0x4c0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_open fs/open.c:1334 [inline]
__se_sys_open fs/open.c:1330 [inline]
__x64_sys_open+0x11d/0x1c0 fs/open.c:1330
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe8fc345669
RSP: 002b:00007fe8f42d02f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fe8fc3cb7b0 RCX: 00007fe8fc345669
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000200
RBP: 00007fe8fc3981b8 R08: 00007fe8f42d0700 R09: 0000000000000000
R10: 00007fe8f42d0700 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 7366726573696572 R14: 65732f636f72702f R15: 00007fe8fc3cb7b8
</TASK>
INFO: task syz-executor214:5129 blocked for more than 146 seconds.
Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor214 state:D stack:28984 pid:5129 ppid:5069 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
io_schedule+0xbe/0x130 kernel/sched/core.c:8811
folio_wait_bit_common+0x394/0x9b0 mm/filemap.c:1297
__folio_lock mm/filemap.c:1660 [inline]
folio_lock include/linux/pagemap.h:938 [inline]
folio_lock include/linux/pagemap.h:934 [inline]
__filemap_get_folio+0xb71/0xd80 mm/filemap.c:1932
pagecache_get_page+0x2e/0x280 mm/folio-compat.c:98
find_or_create_page include/linux/pagemap.h:612 [inline]
grab_cache_page include/linux/pagemap.h:742 [inline]
grab_tail_page fs/reiserfs/inode.c:2201 [inline]
reiserfs_truncate_file+0x5bb/0x1070 fs/reiserfs/inode.c:2269
reiserfs_setattr+0xed3/0x1460 fs/reiserfs/inode.c:3395
notify_change+0xca7/0x1420 fs/attr.c:482
do_truncate+0x143/0x200 fs/open.c:65
vfs_truncate+0x3c2/0x490 fs/open.c:111
do_sys_truncate.part.0+0x11e/0x140 fs/open.c:134
do_sys_truncate fs/open.c:128 [inline]
__do_sys_truncate fs/open.c:146 [inline]
__se_sys_truncate fs/open.c:144 [inline]
__x64_sys_truncate+0x6d/0xa0 fs/open.c:144
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe8fc345669
RSP: 002b:00007fe8f42af2f8 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007fe8fc3cb7c0 RCX: 00007fe8fc345669
RDX: 00007fe8f42af700 RSI: 0000000000000006 RDI: 00000000200001c0
RBP: 00007fe8fc3981b8 R08: 00007fe8f42af700 R09: 0000000000000000
R10: 00007fe8f42af700 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 7366726573696572 R14: 65732f636f72702f R15: 00007fe8fc3cb7c8
</TASK>

Showing all locks held in the system:
4 locks held by kworker/0:0/7:
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc900000c7da8 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffff8880212dc0e0 (&type->s_umount_key#41){++++}-{3:3}, at: flush_old_commits+0x7c/0x200 fs/reiserfs/super.c:97
#3: ffff88801dc65090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c590b70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c590870 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
4 locks held by kworker/1:0/22:
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc900001c7da8
((work_completion)(&(&sbi->old_work)->work)
){+.+.}-{0:0}
, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2:
ffff88807d9740e0 (&type->s_umount_key#41){++++}-{3:3}, at: flush_old_commits+0x7c/0x200 fs/reiserfs/super.c:97
#3: ffff8881452ea090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
4 locks held by kworker/1:1/26:
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc90000a1fda8 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffff88807c5be0e0 (&type->s_umount_key#41){++++}-{3:3}, at: flush_old_commits+0x7c/0x200 fs/reiserfs/super.c:97
#3:
ffff8880203d8090
(
&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
1 lock held by khungtaskd/28:
#0: ffffffff8c5916c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
5 locks held by kworker/u4:2/41:
4 locks held by kworker/1:3/2689:
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc9000aff7da8 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffff88802abe20e0 (&type->s_umount_key#41){++++}-{3:3}, at: flush_old_commits+0x7c/0x200 fs/reiserfs/super.c:97
#3: ffff8880177a3090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
1 lock held by klogd/4419:
#0: ffff8880b9a3b598 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:537
2 locks held by getty/4746:
#0: ffff88802b03b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
2 locks held by syz-executor214/5087:
#0: ffff8880212dc460 (sb_writers#9){.+.+}-{0:0}, at: __do_sys_sendfile64 fs/read_write.c:1323 [inline]
#0: ffff8880212dc460 (sb_writers#9){.+.+}-{0:0}, at: __se_sys_sendfile64 fs/read_write.c:1309 [inline]
#0: ffff8880212dc460 (sb_writers#9){.+.+}-{0:0}, at: __x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1309
#1: ffff88807355be80 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807355be80 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: reiserfs_sync_file+0xab/0x320 fs/reiserfs/file.c:155
3 locks held by syz-executor214/5098:
#0: ffff88801ba6faa0 (&iint->mutex){+.+.}-{3:3}, at: process_measurement+0x3ab/0x18b0 security/integrity/ima/ima_main.c:260
#1: ffff88807355c020 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline]
#1: ffff88807355c020 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x153/0x5e0 mm/readahead.c:226
#2: ffff88801dc65090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
4 locks held by syz-executor214/5103:
#0: ffff8880212dc460 (sb_writers#9){.+.+}-{0:0}, at: vfs_truncate+0xee/0x490 fs/open.c:84
#1: ffff88807355be80 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807355be80 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: do_truncate+0x131/0x200 fs/open.c:63
#2: ffff88807355bc58 (&ei->tailpack){+.+.}-{3:3}, at: reiserfs_setattr+0xe9d/0x1460 fs/reiserfs/inode.c:3393
#3: ffff88801dc65090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
2 locks held by syz-executor214/5120:
#0: ffff88807c5be460 (sb_writers#9){.+.+}-{0:0}, at: __do_sys_sendfile64 fs/read_write.c:1323 [inline]
#0: ffff88807c5be460 (sb_writers#9){.+.+}-{0:0}, at: __se_sys_sendfile64 fs/read_write.c:1309 [inline]
#0: ffff88807c5be460 (sb_writers#9){.+.+}-{0:0}, at: __x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1309
#1: ffff88807363d260 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807363d260 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: generic_file_write_iter+0x92/0x350 mm/filemap.c:3929
3 locks held by syz-executor214/5127:
#0: ffff888027ac4860 (&iint->mutex){+.+.}-{3:3}, at: process_measurement+0x3ab/0x18b0 security/integrity/ima/ima_main.c:260
#1: ffff88807363d400 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline]
#1: ffff88807363d400 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x153/0x5e0 mm/readahead.c:226
#2: ffff8880203d8090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
4 locks held by syz-executor214/5129:
#0: ffff88807c5be460 (sb_writers#9){.+.+}-{0:0}, at: vfs_truncate+0xee/0x490 fs/open.c:84
#1:
ffff88807363d260 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
ffff88807363d260 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: do_truncate+0x131/0x200 fs/open.c:63
#2: ffff88807363d038 (&ei->tailpack){+.+.}-{3:3}, at: reiserfs_setattr+0xe9d/0x1460 fs/reiserfs/inode.c:3393
#3: ffff8880203d8090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
4 locks held by kworker/0:4/5174:
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012065538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc900047c7da8 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffff88807d3a80e0 (&type->s_umount_key#41){++++}-{3:3}, at: flush_old_commits+0x7c/0x200 fs/reiserfs/super.c:97
#3: ffff88801bc5f090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
2 locks held by syz-executor214/5267:
#0: ffff88807d974460 (sb_writers#9){.+.+}-{0:0}, at: __do_sys_sendfile64 fs/read_write.c:1323 [inline]
#0: ffff88807d974460 (sb_writers#9){.+.+}-{0:0}, at: __se_sys_sendfile64 fs/read_write.c:1309 [inline]
#0: ffff88807d974460 (sb_writers#9){.+.+}-{0:0}, at: __x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1309
#1: ffff88806e877a20 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88806e877a20 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: generic_file_write_iter+0x92/0x350 mm/filemap.c:3929
3 locks held by syz-executor214/5274:
#0: ffff888078d08ce0 (&iint->mutex){+.+.}-{3:3}, at: process_measurement+0x3ab/0x18b0 security/integrity/ima/ima_main.c:260
#1: ffff88806e877bc0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline]
#1: ffff88806e877bc0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x153/0x5e0 mm/readahead.c:226
#2: ffff8881452ea090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
4 locks held by syz-executor214/5276:
#0: ffff88807d974460 (sb_writers#9){.+.+}-{0:0}, at: vfs_truncate+0xee/0x490 fs/open.c:84
#1: ffff88806e877a20 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88806e877a20 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: do_truncate+0x131/0x200 fs/open.c:63
#2: ffff88806e8777f8 (&ei->tailpack){+.+.}-{3:3}, at: reiserfs_setattr+0xe9d/0x1460 fs/reiserfs/inode.c:3393
#3: ffff8881452ea090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
2 locks held by syz-executor214/5281:
#0: ffff88802abe2460 (sb_writers#9){.+.+}-{0:0}, at: __do_sys_sendfile64 fs/read_write.c:1323 [inline]
#0: ffff88802abe2460 (sb_writers#9){.+.+}-{0:0}, at: __se_sys_sendfile64 fs/read_write.c:1309 [inline]
#0: ffff88802abe2460 (sb_writers#9){.+.+}-{0:0}, at: __x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1309
#1: ffff888073781d60 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff888073781d60 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: generic_file_write_iter+0x92/0x350 mm/filemap.c:3929
3 locks held by syz-executor214/5289:
#0: ffff88801ba6fe00 (&iint->mutex){+.+.}-{3:3}, at: process_measurement+0x3ab/0x18b0 security/integrity/ima/ima_main.c:260
#1: ffff888073781f00 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline]
#1: ffff888073781f00 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x153/0x5e0 mm/readahead.c:226
#2: ffff8880177a3090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
4 locks held by syz-executor214/5290:
#0: ffff88802abe2460 (sb_writers#9){.+.+}-{0:0}, at: vfs_truncate+0xee/0x490 fs/open.c:84
#1: ffff888073781d60 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff888073781d60 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: do_truncate+0x131/0x200 fs/open.c:63
#2: ffff888073781b38 (&ei->tailpack){+.+.}-{3:3}, at: reiserfs_setattr+0xe9d/0x1460 fs/reiserfs/inode.c:3393
#3: ffff8880177a3090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
2 locks held by syz-executor214/5309:
#0: ffff88807d3a8460 (sb_writers#9){.+.+}-{0:0}, at: __do_sys_sendfile64 fs/read_write.c:1323 [inline]
#0: ffff88807d3a8460 (sb_writers#9){.+.+}-{0:0}, at: __se_sys_sendfile64 fs/read_write.c:1309 [inline]
#0: ffff88807d3a8460 (sb_writers#9){.+.+}-{0:0}, at: __x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1309
#1: ffff88807363ece0 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807363ece0 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: reiserfs_sync_file+0xab/0x320 fs/reiserfs/file.c:155
3 locks held by syz-executor214/5313:
#0: ffff88801ca5de00 (&iint->mutex){+.+.}-{3:3}, at: process_measurement+0x3ab/0x18b0 security/integrity/ima/ima_main.c:260
#1: ffff88807363ee80 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline]
#1: ffff88807363ee80 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x153/0x5e0 mm/readahead.c:226
#2: ffff88801bc5f090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
4 locks held by syz-executor214/5314:
#0: ffff88807d3a8460 (sb_writers#9){.+.+}-{0:0}, at: vfs_truncate+0xee/0x490 fs/open.c:84
#1: ffff88807363ece0 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807363ece0 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: do_truncate+0x131/0x200 fs/open.c:63
#2: ffff88807363eab8 (&ei->tailpack){+.+.}-{3:3}, at: reiserfs_setattr+0xe9d/0x1460 fs/reiserfs/inode.c:3393
#3: ffff88801bc5f090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
2 locks held by kworker/1:4/5335:
#0: ffff888012066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc900058b7da8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x333/0x3c0 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+0xc75/0xfc0 kernel/hung_task.c:377
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.1.0-syzkaller-13031-g77856d911a8c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4302 [inline]
RIP: 0010:lockdep_hardirqs_on_prepare+0x19a/0x410 kernel/locking/lockdep.c:4273
Code: 01 00 00 48 c7 c7 e0 4d 2c 8a e8 01 00 96 08 b8 ff ff ff ff 65 0f c1 05 7c 00 9f 7e 83 f8 01 0f 85 ff 00 00 00 5b 5d c3 9c 58 <f6> c4 02 0f 85 59 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da
RSP: 0018:ffffc90000177db8 EFLAGS: 00000046
RAX: 0000000000000046 RBX: ffffffff919f6a00 RCX: 1ffffffff1ca59b5
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffffff8174faee R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8fd53057 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc4c528ff8 CR3: 000000000c28e000 CR4: 0000000000350ee0
Call Trace:
<TASK>
trace_hardirqs_on+0x31/0x180 kernel/trace/trace_preemptirq.c:49
tick_nohz_idle_enter+0x19e/0x250 kernel/time/tick-sched.c:1162
do_idle+0x9a/0x590 kernel/sched/idle.c:277
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:400
start_secondary+0x256/0x300 arch/x86/kernel/smpboot.c:264
secondary_startup_64_no_verify+0xce/0xdb
</TASK>

---
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