F2FS-fs (loop0): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 12 F2FS-fs (loop0): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 12 F2FS-fs (loop0): sanity_check_inode: inode (ino=8) has corrupted i_extra_isize: 36, max: 12 INFO: task syz-executor385:7969 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-executor385 D28912 7969 7957 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 sync_inodes_sb+0x173/0x880 fs/fs-writeback.c:2447 sync_inodes_one_sb+0x3d/0x50 fs/sync.c:74 iterate_supers+0x124/0x490 fs/super.c:613 sys_sync+0x78/0x130 fs/sync.c:113 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f8c80fa6569 RSP: 002b:00007fff4e5709b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 0000000020010ba0 RCX: 00007f8c80fa6569 RDX: 00007f8c80f64463 RSI: 0000000000000003 RDI: 0000000000004c00 RBP: 0000000000000000 R08: 0000555556e7a2c0 R09: 00007f8c81015ec0 R10: 00007fff4e5706c0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff4e5709cc R14: 431bde82d7b634db R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/1527: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 2 locks held by syz-executor385/7969: #0: (&type->s_umount_key#61){.+.+}, at: [] iterate_supers+0xda/0x490 fs/super.c:611 #1: (&bdi->wb_switch_rwsem){+.+.}, at: [] bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:338 [inline] #1: (&bdi->wb_switch_rwsem){+.+.}, at: [] sync_inodes_sb+0x156/0x880 fs/fs-writeback.c:2445 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1527 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: 4613 Comm: systemd-journal Not tainted 4.14.296-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 task: ffff8880a1fac580 task.stack: ffff8880a1fb0000 RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:100 [inline] RIP: 0010:do_raw_spin_unlock+0xc3/0x220 kernel/locking/spinlock_debug.c:134 RSP: 0018:ffff8880a1fb7d78 EFLAGS: 00000a06 RAX: 0000000000000000 RBX: ffff8880a1e14000 RCX: 1ffff110143f59c1 RDX: 1ffff110143c2821 RSI: 0000000000000001 RDI: ffff8880a1e14104 RBP: ffff8880a1e14100 R08: ffffffff8b9a92a8 R09: 0000000000000000 R10: 0000000000000000 R11: ffff8880a1fac580 R12: ffff8880a1e14108 R13: ffff8880a1e14110 R14: ffff8880a1e14100 R15: 0000000000000000 FS: 00007fdf23cfb8c0(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdf210f5000 CR3: 00000000a1d7f000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock+0x1f/0x40 kernel/locking/spinlock.c:184 spin_unlock include/linux/spinlock.h:357 [inline] timerfd_setup_cancel fs/timerfd.c:157 [inline] do_timerfd_settime.part.0+0x1a1/0xde0 fs/timerfd.c:457 do_timerfd_settime fs/timerfd.c:535 [inline] SYSC_timerfd_settime fs/timerfd.c:544 [inline] SyS_timerfd_settime+0xe8/0x170 fs/timerfd.c:535 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fdf22fc47ba RSP: 002b:00007ffc0b49b3e8 EFLAGS: 00000246 ORIG_RAX: 000000000000011e RAX: ffffffffffffffda RBX: 00005617d5dc0250 RCX: 00007fdf22fc47ba RDX: 00007ffc0b49b400 RSI: 0000000000000001 RDI: 000000000000000f RBP: 000000003ec3ee00 R08: 431bde82d7b634db R09: 00000101eef6e890 R10: 0000000000000000 R11: 0000000000000246 R12: 000000003ec2cbf1 R13: 00007fdf239fd147 R14: 00007fdf23a5a800 R15: 0005ec44ef4137ba Code: 48 8b 04 25 c0 7f 02 00 48 39 45 10 0f 85 d6 00 00 00 4c 8d 65 08 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e fc 00 00 00 65 8b 05 1a ca bf 7e 39 45