F2FS-fs (loop6): inconsistent node block, node_type:0, nid:4, node_footer[nid:9,ino:4,ofs:0,cpver:1219692001,blkaddr:15875] ================================ WARNING: inconsistent lock state syzkaller #0 Tainted: G L -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. ksoftirqd/1/23 [HC0[0]:SC1[1]:HE1:SE0] takes: ffff888057e97460 (&sb->s_type->i_lock_key#44){+.?.}-{3:3}, at: spin_lock include/linux/spinlock.h:342 [inline] ffff888057e97460 (&sb->s_type->i_lock_key#44){+.?.}-{3:3}, at: igrab+0x2d/0x1e0 fs/inode.c:1577 {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:1483 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:3758 [inline] do_new_mount+0x341/0xd30 fs/namespace.c:3834 do_mount fs/namespace.c:4167 [inline] __do_sys_mount fs/namespace.c:4399 [inline] __se_sys_mount+0x31d/0x420 fs/namespace.c:4376 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: 1931062 hardirqs last enabled at (1931062): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] hardirqs last enabled at (1931062): [] _raw_spin_unlock_irqrestore+0x30/0x80 kernel/locking/spinlock.c:198 hardirqs last disabled at (1931061): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:130 [inline] hardirqs last disabled at (1931061): [] _raw_spin_lock_irqsave+0x1a/0x60 kernel/locking/spinlock.c:166 softirqs last enabled at (1931002): [] run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076 softirqs last disabled at (1931015): [] 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#44); lock(&sb->s_type->i_lock_key#44); *** DEADLOCK *** no locks held by ksoftirqd/1/23. stack backtrace: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP 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:1577 fserror_report+0x3c5/0x740 fs/fserror.c:159 fserror_report_file_metadata include/linux/fserror.h:61 [inline] f2fs_sanity_check_node_footer+0x637/0x960 fs/f2fs/node.c:1562 f2fs_finish_read_bio+0xeb9/0x12a0 fs/f2fs/data.c:179 blk_update_request+0x57e/0xe60 block/blk-mq.c:1016 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1178 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 (loop6): inconsistent node block, node_type:0, nid:4, node_footer[nid:9,ino:4,ofs:0,cpver:1219692001,blkaddr:15875]