------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:5326!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 1853 Comm: syz.7.372 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ext4_do_update_inode fs/ext4/inode.c:5325 [inline]
RIP: 0010:ext4_mark_iloc_dirty+0x3e33/0x3e40 fs/ext4/inode.c:5924
Code: cd ff e9 b2 f0 ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c bf f0 ff ff 4c 89 ff e8 d7 d6 cd ff e9 b2 f0 ff ff e8 3d 55 93 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 57 41 56 41
RSP: 0018:ffffc90000dbf480 EFLAGS: 00010293
RAX: ffffffff81d16113 RBX: ffff88810f456001 RCX: ffff888117d18000
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: ffffc90000dbf580 R08: ffff8881333fa087 R09: 1ffff1102667f410
R10: dffffc0000000000 R11: ffffed102667f411 R12: dffffc0000000000
R13: ffff8881333f9f48 R14: ffff88810f456000 R15: 00000000ffffffff
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c299bc7 CR3: 000000012c227000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __ext4_mark_inode_dirty+0x423/0x610 fs/ext4/inode.c:6126
 ext4_dirty_inode+0xe0/0x120 fs/ext4/inode.c:6162
 __mark_inode_dirty+0xbe/0x9c0 fs/fs-writeback.c:2258
 mark_inode_dirty_sync include/linux/fs.h:2361 [inline]
 iput+0x157/0x7c0 fs/inode.c:1759
 dentry_unlink_inode+0x2cf/0x380 fs/dcache.c:378
 __dentry_kill+0x44f/0x650 fs/dcache.c:583
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput fs/dcache.c:883 [inline]
 do_one_tree+0xe5/0x150 fs/dcache.c:1630
 shrink_dcache_for_umount+0x6a/0x110 fs/dcache.c:1644
 generic_shutdown_super+0x66/0x320 fs/super.c:447
 kill_block_super+0x7f/0xf0 fs/super.c:1469
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x45b/0x510 fs/namespace.c:1123
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1130
 task_work_run+0x127/0x190 kernel/task_work.c:189
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xa90/0x2500 kernel/exit.c:872
 do_group_exit+0x141/0x310 kernel/exit.c:986
 get_signal+0xf7d/0x12e0 kernel/signal.c:2793
 arch_do_signal_or_restart+0xe2/0x11d0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0xa2/0xe0 kernel/entry/common.c:169
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:274
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fafaaa1984e
Code: Unable to access opcode bytes at RIP 0x7fafaaa19824.
RSP: 002b:00007fafa94b3f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007fafa94b46c0 RCX: 00007fafaaa1984e
RDX: 00007fafa94b3fb0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fafaaaef7e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fafaacd3038 R14: 00007fafaacd2fa0 R15: 00007ffffefa1c18
Modules linked in:
---[ end trace 92b96d6c7061380f ]---
RIP: 0010:ext4_do_update_inode fs/ext4/inode.c:5325 [inline]
RIP: 0010:ext4_mark_iloc_dirty+0x3e33/0x3e40 fs/ext4/inode.c:5924
Code: cd ff e9 b2 f0 ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c bf f0 ff ff 4c 89 ff e8 d7 d6 cd ff e9 b2 f0 ff ff e8 3d 55 93 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 57 41 56 41
RSP: 0018:ffffc90000dbf480 EFLAGS: 00010293
RAX: ffffffff81d16113 RBX: ffff88810f456001 RCX: ffff888117d18000
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: ffffc90000dbf580 R08: ffff8881333fa087 R09: 1ffff1102667f410
R10: dffffc0000000000 R11: ffffed102667f411 R12: dffffc0000000000
R13: ffff8881333f9f48 R14: ffff88810f456000 R15: 00000000ffffffff
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c299bc7 CR3: 000000012c227000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400