INFO: task syz.3.189:7890 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.3.189 state:D stack:25256 pid:7890 tgid:7890 ppid:5836 task_flags:0x400040 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]
rt_mutex_schedule+0x77/0xf0 kernel/sched/core.c:7339
rt_mutex_slowlock_block kernel/locking/rtmutex.c:1647 [inline]
__rt_mutex_slowlock kernel/locking/rtmutex.c:1721 [inline]
__rt_mutex_slowlock_locked+0x1e04/0x25e0 kernel/locking/rtmutex.c:1760
rt_mutex_slowlock+0xb5/0x160 kernel/locking/rtmutex.c:1800
__rt_mutex_lock kernel/locking/rtmutex.c:1815 [inline]
rwbase_write_lock+0x14f/0x750 kernel/locking/rwbase_rt.c:244
inode_lock include/linux/fs.h:869 [inline]
f2fs_release_file+0xe3/0x150 fs/f2fs/file.c:2055
__fput+0x45b/0xa80 fs/file_table.c:468
task_work_run+0x1d1/0x260 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:43
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f66f436ebe9
RSP: 002b:00007fff3d7921b8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f66f4597da0 RCX: 00007f66f436ebe9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f66f4597da0 R08: 0000000000000258 R09: 0000001e3d7924af
R10: 00007f66f4597cb0 R11: 0000000000000246 R12: 000000000002dffc
R13: 00007f66f4596180 R14: ffffffffffffffff R15: 00007fff3d7922d0
INFO: task syz.3.189:7959 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.3.189 state:D stack:29352 pid:7959 tgid:7890 ppid:5836 task_flags:0x400040 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]
rt_mutex_schedule+0x77/0xf0 kernel/sched/core.c:7339
rt_mutex_slowlock_block kernel/locking/rtmutex.c:1647 [inline]
__rt_mutex_slowlock kernel/locking/rtmutex.c:1721 [inline]
__rt_mutex_slowlock_locked+0x1e04/0x25e0 kernel/locking/rtmutex.c:1760
rt_mutex_slowlock+0xb5/0x160 kernel/locking/rtmutex.c:1800
__rt_mutex_lock kernel/locking/rtmutex.c:1815 [inline]
rwbase_write_lock+0x14f/0x750 kernel/locking/rwbase_rt.c:244
inode_lock_nested include/linux/fs.h:914 [inline]
filename_create+0x1f8/0x3c0 fs/namei.c:4139
do_symlinkat+0xbc/0x3f0 fs/namei.c:4749
__do_sys_symlink fs/namei.c:4777 [inline]
__se_sys_symlink fs/namei.c:4775 [inline]
__x64_sys_symlink+0x7a/0x90 fs/namei.c:4775
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: 0033:0x7f66f436ebe9
RSP: 002b:00007f66f25ad038 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 00007f66f4596090 RCX: 00007f66f436ebe9
RDX: 0000000000000000 RSI: 0000200000000800 RDI: 0000200000000280
RBP: 00007f66f43f1e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f66f4596128 R14: 00007f66f4596090 R15: 00007fff3d792058
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7891 Comm: syz.3.189 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:__rwbase_write_trylock kernel/locking/rwbase_rt.c:229 [inline]
RIP: 0010:rwbase_write_lock+0x1f2/0x750 kernel/locking/rwbase_rt.c:253
Code: 00 00 00 e8 70 be 25 f7 4c 89 f9 48 c1 e9 03 48 b8 00 00 00 00 00 fc ff df 48 89 4c 24 30 0f b6 04 01 84 c0 0f 85 8c 04 00 00 <41> 8b 07 85 c0 0f 84 33 03 00 00 40 f6 c5 cc 0f 85 22 04 00 00 48
RSP: 0018:ffffc900063f76d0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000a02 RCX: 1ffff110075c1868
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88803ae0c340
RBP: 0000000000000002 R08: ffff88803ae0c343 R09: 1ffff110075c1868
R10: dffffc0000000000 R11: ffffed10075c1869 R12: 0000000000000001
R13: ffff88803ae0c348 R14: ffff88803ae0c398 R15: ffff88803ae0c340
FS: 00007f66f25ce6c0(0000) GS:ffff8881269c5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd3b36f7dac CR3: 000000006e5d6000 CR4: 00000000003526f0
Call Trace:
f2fs_down_write fs/f2fs/f2fs.h:2234 [inline]
f2fs_lock_all fs/f2fs/f2fs.h:2314 [inline]
block_operations fs/f2fs/checkpoint.c:1221 [inline]
f2fs_write_checkpoint+0x51c/0x1df0 fs/f2fs/checkpoint.c:1638
f2fs_issue_checkpoint+0x3ac/0x570 fs/f2fs/checkpoint.c:1847
f2fs_unlink+0x5eb/0xac0 fs/f2fs/namei.c:603
vfs_unlink+0x39a/0x660 fs/namei.c:4586
do_unlinkat+0x345/0x570 fs/namei.c:4650
__do_sys_unlinkat fs/namei.c:4691 [inline]
__se_sys_unlinkat fs/namei.c:4684 [inline]
__x64_sys_unlinkat+0xd3/0xf0 fs/namei.c:4684
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: 0033:0x7f66f436ebe9
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:00007f66f25ce038 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007f66f4595fa0 RCX: 00007f66f436ebe9
RDX: 0000000000000000 RSI: 0000200000000380 RDI: ffffffffffffff9c
RBP: 00007f66f43f1e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f66f4596038 R14: 00007f66f4595fa0 R15: 00007fff3d792058