F2FS-fs (loop0): inject write IO error in f2fs_write_end_io of blk_update_request+0x57e/0xe60 block/blk-mq.c:1016 ================================ WARNING: inconsistent lock state syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. ksoftirqd/0/15 [HC0[0]:SC1[1]:HE0:SE0] takes: ffff888059febf98 (&sb->s_type->i_lock_key#37){+.?.}-{3:3}, at: spin_lock include/linux/spinlock.h:342 [inline] ffff888059febf98 (&sb->s_type->i_lock_key#37){+.?.}-{3:3}, at: igrab+0x2d/0x1e0 fs/inode.c:1583 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __raw_spin_lock include/linux/spinlock_api_smp.h:158 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:158 spin_lock include/linux/spinlock.h:342 [inline] iget_locked+0x397/0x6a0 fs/inode.c:1489 f2fs_iget+0x56/0x5f30 fs/f2fs/inode.c:577 f2fs_fill_super+0x4419/0x78f0 fs/f2fs/super.c:5118 get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694 vfs_get_tree+0x92/0x2a0 fs/super.c:1754 fc_mount fs/namespace.c:1193 [inline] do_new_mount_fc fs/namespace.c:3764 [inline] do_new_mount+0x341/0xd30 fs/namespace.c:3840 do_mount fs/namespace.c:4173 [inline] __do_sys_mount fs/namespace.c:4372 [inline] __se_sys_mount+0x31d/0x420 fs/namespace.c:4349 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f irq event stamp: 795655 hardirqs last enabled at (795654): [] seqcount_lockdep_reader_access+0xa9/0x100 include/linux/seqlock.h:75 hardirqs last disabled at (795655): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:130 [inline] hardirqs last disabled at (795655): [] _raw_spin_lock_irqsave+0x1a/0x60 kernel/locking/spinlock.c:166 softirqs last enabled at (795646): [] run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076 softirqs last disabled at (795651): [] run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&sb->s_type->i_lock_key#37); lock(&sb->s_type->i_lock_key#37); *** DEADLOCK *** 1 lock held by ksoftirqd/0/15: #0: ffff888026b62c18 (&fq->mq_flush_lock){..-.}-{3:3}, at: flush_end_io+0xc1/0xe60 block/blk-flush.c:212 stack backtrace: CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_usage_bug+0x28b/0x2e0 kernel/locking/lockdep.c:4042 valid_state kernel/locking/lockdep.c:4056 [inline] mark_lock_irq+0x410/0x420 kernel/locking/lockdep.c:-1 mark_lock+0x115/0x190 kernel/locking/lockdep.c:4753 mark_usage kernel/locking/lockdep.c:-1 [inline] __lock_acquire+0x689/0x2cf0 kernel/locking/lockdep.c:5191 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __raw_spin_lock include/linux/spinlock_api_smp.h:158 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:158 spin_lock include/linux/spinlock.h:342 [inline] igrab+0x2d/0x1e0 fs/inode.c:1583 fserror_report+0x3c5/0x740 fs/fserror.c:159 fserror_report_io include/linux/fserror.h:48 [inline] f2fs_write_end_io+0x12c1/0x17a0 fs/f2fs/data.c:386 blk_update_request+0x57e/0xe60 block/blk-mq.c:1016 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1178 blk_flush_complete_seq+0x678/0xcc0 block/blk-flush.c:191 flush_end_io+0xbaa/0xe60 block/blk-flush.c:251 __blk_mq_end_request+0x4f8/0x630 block/blk-mq.c:1168 blk_complete_reqs block/blk-mq.c:1253 [inline] blk_done_softirq+0x10a/0x160 block/blk-mq.c:1258 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 f2fs_handle_critical_error fs/f2fs/super.c:4719 [inline] f2fs_stop_checkpoint+0x3c7/0x590 fs/f2fs/super.c:4748 f2fs_write_end_io+0x12e5/0x17a0 fs/f2fs/data.c:390 blk_update_request+0x57e/0xe60 block/blk-mq.c:1016 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1178 blk_flush_complete_seq+0x678/0xcc0 block/blk-flush.c:191 flush_end_io+0xbaa/0xe60 block/blk-flush.c:251 __blk_mq_end_request+0x4f8/0x630 block/blk-mq.c:1168 blk_complete_reqs block/blk-mq.c:1253 [inline] blk_done_softirq+0x10a/0x160 block/blk-mq.c:1258 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 F2FS-fs (loop0): Stopped filesystem due to reason: 3