INFO: task syz.0.114:6731 blocked for more than 143 seconds.
Tainted: G W 6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.114 state:D stack:24520 pid:6731 tgid:6730 ppid:5832 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x16f3/0x4c20 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:100 [inline]
__wait_for_common kernel/sched/completion.c:121 [inline]
wait_for_common kernel/sched/completion.c:132 [inline]
wait_for_completion+0x2bf/0x5d0 kernel/sched/completion.c:153
f2fs_issue_checkpoint+0x376/0x570 fs/f2fs/checkpoint.c:-1
f2fs_do_sync_file+0x86c/0x1860 fs/f2fs/file.c:346
generic_write_sync include/linux/fs.h:3042 [inline]
f2fs_file_write_iter+0x752/0x2400 fs/f2fs/file.c:5259
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x5d2/0xb40 fs/read_write.c:686
ksys_write+0x14b/0x260 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f04a4adebe9
RSP: 002b:00007f04a2d46038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f04a4d05fa0 RCX: 00007f04a4adebe9
RDX: 0000000000000018 RSI: 0000200000000400 RDI: 0000000000000004
RBP: 00007f04a4b61e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f04a4d06038 R14: 00007f04a4d05fa0 R15: 00007ffef0a4e098
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 39 Comm: khungtaskd Tainted: G W 6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0 PREEMPT_{RT,(full)}
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline]
watchdog+0xf93/0xfe0 kernel/hung_task.c:491
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 8627 Comm: syz.2.359 Tainted: G W 6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0 PREEMPT_{RT,(full)}
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:blkdev_get_whole+0x76/0x480 block/bdev.c:729
Code: 4c 89 e0 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 e7 e8 de 6f 89 fd 4d 8b 24 24 49 83 c4 10 4c 89 e0 48 c1 e8 03 42 80 3c 30 00 <74> 08 4c 89 e7 e8 c0 6f 89 fd 4d 8b 1c 24 4d 85 db 74 3d 4c 89 ff
RSP: 0018:ffffc90005d6f718 EFLAGS: 00000246
RAX: 1ffffffff16f63fa RBX: 1ffff11004a1d662 RCX: 0000000000080000
RDX: ffffc9000e1d4000 RSI: 0000000000000481 RDI: 0000000000000482
RBP: ffff8880250eb310 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1004a1d667 R12: ffffffff8b7b1fd0
R13: 0000000000000001 R14: dffffc0000000000 R15: ffff888025812000
FS: 00007ff6cccc66c0(0000) GS:ffff8881268c5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000007bdda000 CR4: 00000000003526f0
Call Trace:
bdev_open+0x31e/0xcc0 block/bdev.c:957
blkdev_open+0x3bd/0x520 block/fops.c:691
do_dentry_open+0x9ae/0x1350 fs/open.c:965
vfs_open+0x3b/0x350 fs/open.c:1095
do_open fs/namei.c:3887 [inline]
path_openat+0x2ef1/0x3840 fs/namei.c:4046
do_filp_open+0x1fa/0x410 fs/namei.c:4073
do_sys_openat2+0x121/0x1c0 fs/open.c:1435
do_sys_open fs/open.c:1450 [inline]
__do_sys_openat fs/open.c:1466 [inline]
__se_sys_openat fs/open.c:1461 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1461
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff6cea5ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff6cccc6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ff6cec85fa0 RCX: 00007ff6cea5ebe9
RDX: 0000000000002000 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007ff6ceae1e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff6cec86038 R14: 00007ff6cec85fa0 R15: 00007ffe473566e8