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F2FS-fs (loop1): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 12
F2FS-fs (loop1): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 12
F2FS-fs (loop1): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 12
INFO: task syz-executor.1:7999 blocked for more than 140 seconds.
Not tainted 4.14.296-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1 D24096 7999 1 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
wb_wait_for_completion fs/fs-writeback.c:222 [inline]
wb_wait_for_completion+0x118/0x170 fs/fs-writeback.c:218
__writeback_inodes_sb_nr+0x164/0x1d0 fs/fs-writeback.c:2343
__sync_filesystem fs/sync.c:36 [inline]
sync_filesystem fs/sync.c:64 [inline]
sync_filesystem+0x8c/0x230 fs/sync.c:48
generic_shutdown_super+0x70/0x370 fs/super.c:432
kill_block_super+0x95/0xe0 fs/super.c:1161
deactivate_locked_super+0x6c/0xd0 fs/super.c:319
deactivate_super+0x7f/0xa0 fs/super.c:350
cleanup_mnt+0x186/0x2c0 fs/namespace.c:1183
task_work_run+0x11f/0x190 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:191 [inline]
exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f90d466aa17
RSP: 002b:00007ffc22891188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f90d466aa17
RDX: 00007ffc22891259 RSI: 000000000000000a RDI: 00007ffc22891250
RBP: 00007ffc22891250 R08: 00000000ffffffff R09: 00007ffc22891020
R10: 0000555555dae903 R11: 0000000000000246 R12: 00007f90d46c3826
R13: 00007ffc22892310 R14: 0000555555dae810 R15: 00007ffc22892350
Showing all locks held in the system:
1 lock held by khungtaskd/1515:
#0: (tasklist_lock){.+.+}, at: [<ffffffff87028579>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548
1 lock held by syz-executor.1/7999:
#0: (&type->s_umount_key#63){++++}, at: [<ffffffff81877187>] deactivate_super+0x77/0xa0 fs/super.c:349
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1515 Comm: khungtaskd Not tainted 4.14.296-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
watchdog+0x5b9/0xb40 kernel/hung_task.c:274
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 22 Comm: kworker/u4:1 Not tainted 4.14.296-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Workqueue: writeback wb_workfn (flush-7:1)
task: ffff8880b55f65c0 task.stack: ffff8880b5600000
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:60
RSP: 0018:ffff8880b5607138 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: fffffbfff17d9db8
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000282
RBP: ffff8880983c2388 R08: ffff8880b55f65c0 R09: dffffc0000000000
R10: 0000000000000000 R11: ffff8880b55f65c0 R12: 0000000000000200
R13: ffff888098712500 R14: dffffc0000000000 R15: ffff8880983fc55c
FS: 0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0243d90020 CR3: 00000000b3451000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
gc_data_segment fs/f2fs/gc.c:818 [inline]
do_garbage_collect+0x1a59/0x38f0 fs/f2fs/gc.c:978
f2fs_gc+0x7db/0x1eb0 fs/f2fs/gc.c:1060
f2fs_balance_fs+0x423/0x5a0 fs/f2fs/segment.c:436
__write_data_page+0x646/0x1480 fs/f2fs/data.c:1615
f2fs_write_cache_pages+0x40d/0xe50 fs/f2fs/data.c:1744
__f2fs_write_data_pages+0x2e2/0xb90 fs/f2fs/data.c:1838
do_writepages+0xc3/0x240 mm/page-writeback.c:2361
__writeback_single_inode+0xda/0x1010 fs/fs-writeback.c:1382
writeback_sb_inodes+0x48b/0xd30 fs/fs-writeback.c:1645
wb_writeback+0x243/0xb80 fs/fs-writeback.c:1820
wb_do_writeback fs/fs-writeback.c:1952 [inline]
wb_workfn+0x2bd/0xf50 fs/fs-writeback.c:1988
process_one_work+0x793/0x14a0 kernel/workqueue.c:2117
worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: ff ff 48 89 df e8 e1 bd 29 00 e9 9f fe ff ff 4c 89 e7 e8 d4 bd 29 00 e9 2c fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <65> 48 8b 04 25 c0 7f 02 00 48 85 c0 74 1a 65 8b 15 7b 37 ad 7e
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022/10/30 15:29 | linux-4.14.y | 41f36d7859a7 | 2a71366b | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-4-14 | INFO: task hung in __writeback_inodes_sb_nr | ||
| 2022/10/29 04:06 | linux-4.14.y | 41f36d7859a7 | 899d812a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-4-14 | INFO: task hung in __writeback_inodes_sb_nr |