EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs error (device loop3): ext4_validate_block_bitmap:420: comm syz.3.275: bg 0: bad block bitmap checksum
EXT4-fs error (device loop3) in ext4_mb_clear_bb:5645: Filesystem failed CRC
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:5321!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1463 Comm: syz.3.275 Not tainted 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:5320 [inline]
RIP: 0010:ext4_mark_iloc_dirty+0x3e33/0x3e40 fs/ext4/inode.c:5919
Code: ce 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 a7 70 ce ff e9 b2 f0 ff ff e8 7d 81 94 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:ffffc900013cf3b0 EFLAGS: 00010293
RAX: ffffffff81cf2303 RBX: ffff88810ae46001 RCX: ffff8881266313c0
RDX: 0000000000000000 RSI: 0000000000010000 RDI: 0000000000000000
RBP: ffffc900013cf4b0 R08: dffffc0000000000 R09: ffffed1025c2ae67
R10: ffffed1025c2ae67 R11: 1ffff11025c2ae66 R12: dffffc0000000000
R13: ffff88812e1571f8 R14: ffff88810ae46000 R15: 0000000000010000
FS:  00007f762fd666c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f762fd23f98 CR3: 000000011d979000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __ext4_mark_inode_dirty+0x423/0x610 fs/ext4/inode.c:6121
 __ext4_ext_dirty+0x132/0x1e0 fs/ext4/extents.c:182
 ext4_ext_rm_leaf fs/ext4/extents.c:2722 [inline]
 ext4_ext_remove_space+0x25f0/0x4920 fs/ext4/extents.c:2934
 ext4_ext_truncate+0x169/0x1f0 fs/ext4/extents.c:4467
 ext4_truncate+0xaea/0x1290 fs/ext4/inode.c:4373
 ext4_evict_inode+0xf4f/0x1760 fs/ext4/inode.c:290
 evict+0x478/0x910 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 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+0x42/0x80 fs/dcache.c:883
 do_renameat2+0x7bd/0xe60 fs/namei.c:4631
 __do_sys_rename fs/namei.c:4678 [inline]
 __se_sys_rename fs/namei.c:4676 [inline]
 __x64_sys_rename+0x86/0x90 fs/namei.c:4676
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f76312fe749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f762fd66038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f7631554fa0 RCX: 00007f76312fe749
RDX: 0000000000000000 RSI: 0000200000000280 RDI: 00002000000001c0
RBP: 00007f7631382f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7631555038 R14: 00007f7631554fa0 R15: 00007ffdd75a0c18
Modules linked in:
---[ end trace bd9ae777c3a06a3b ]---
RIP: 0010:ext4_do_update_inode fs/ext4/inode.c:5320 [inline]
RIP: 0010:ext4_mark_iloc_dirty+0x3e33/0x3e40 fs/ext4/inode.c:5919
Code: ce 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 a7 70 ce ff e9 b2 f0 ff ff e8 7d 81 94 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:ffffc900013cf3b0 EFLAGS: 00010293
RAX: ffffffff81cf2303 RBX: ffff88810ae46001 RCX: ffff8881266313c0
RDX: 0000000000000000 RSI: 0000000000010000 RDI: 0000000000000000
RBP: ffffc900013cf4b0 R08: dffffc0000000000 R09: ffffed1025c2ae67
R10: ffffed1025c2ae67 R11: 1ffff11025c2ae66 R12: dffffc0000000000
R13: ffff88812e1571f8 R14: ffff88810ae46000 R15: 0000000000010000
FS:  00007f762fd666c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f762fd23f98 CR3: 000000011d979000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400