EXT4-fs error (device loop4): __ext4_get_inode_loc:4436: comm syz-executor.4: Invalid inode table block 0 in block_group 0 EXT4-fs error (device loop4) in ext4_reserve_inode_write:5872: Corrupt filesystem EXT4-fs error (device loop4): ext4_dirty_inode:6082: inode #16: comm syz-executor.4: mark_inode_dirty error ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3247! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 21885 Comm: syz-executor.4 Not tainted 5.10.180-syzkaller-00696-gb04c94b9f966 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3247 [inline] RIP: 0010:ext4_mb_find_by_goal+0xe18/0xe50 fs/ext4/mballoc.c:1885 Code: 24 30 e9 be fb ff ff e8 e6 bc 89 ff 48 bb 00 00 00 00 00 fc ff df e9 23 f7 ff ff e8 d2 bc 89 ff e9 05 f7 ff ff e8 c8 bc 89 ff <0f> 0b e8 51 ef c8 02 e8 bc bc 89 ff 0f 0b e8 b5 bc 89 ff 0f 0b e8 RSP: 0018:ffffc90000c66b60 EFLAGS: 00010283 RAX: ffffffff81e0c428 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90004312000 RSI: 000000000000108e RDI: 000000000000108f RBP: ffffc90000c66c70 R08: ffffffff81e0b73f R09: ffffed102ca71a61 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811632a3c8 R13: 0000000000000001 R14: 1ffff11022c65479 R15: 1ffff9200018cd7c FS: 00007fad7ee13700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30525000 CR3: 000000010ad36000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_regular_allocator+0x249/0x2030 fs/ext4/mballoc.c:2321 ext4_mb_new_blocks+0xfb1/0x4430 fs/ext4/mballoc.c:5042 ext4_ext_map_blocks+0x190e/0x6be0 fs/ext4/extents.c:4281 ext4_map_blocks+0xaa7/0x1f00 fs/ext4/inode.c:646 ext4_iomap_alloc fs/ext4/inode.c:3516 [inline] ext4_iomap_begin+0x798/0xbb0 fs/ext4/inode.c:3566 iomap_apply+0x116/0x8a0 fs/iomap/apply.c:46 __iomap_dio_rw+0x767/0x10f0 fs/iomap/direct-io.c:525 iomap_dio_rw+0x35/0x80 fs/iomap/direct-io.c:613 ext4_dio_write_iter fs/ext4/file.c:573 [inline] ext4_file_write_iter+0x10d2/0x1c80 fs/ext4/file.c:683 call_write_iter include/linux/fs.h:1976 [inline] new_sync_write fs/read_write.c:518 [inline] vfs_write+0xb55/0xe70 fs/read_write.c:605 ksys_write+0x199/0x2c0 fs/read_write.c:658 __do_sys_write fs/read_write.c:670 [inline] __se_sys_write fs/read_write.c:667 [inline] __x64_sys_write+0x7b/0x90 fs/read_write.c:667 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7fad800a0389 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fad7ee13168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fad801bff80 RCX: 00007fad800a0389 RDX: 000000000002a000 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007fad800eb493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffef2eb1f1f R14: 00007fad7ee13300 R15: 0000000000022000 Modules linked in: ---[ end trace 2dab527b8729d13f ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3247 [inline] RIP: 0010:ext4_mb_find_by_goal+0xe18/0xe50 fs/ext4/mballoc.c:1885 Code: 24 30 e9 be fb ff ff e8 e6 bc 89 ff 48 bb 00 00 00 00 00 fc ff df e9 23 f7 ff ff e8 d2 bc 89 ff e9 05 f7 ff ff e8 c8 bc 89 ff <0f> 0b e8 51 ef c8 02 e8 bc bc 89 ff 0f 0b e8 b5 bc 89 ff 0f 0b e8 RSP: 0018:ffffc90000c66b60 EFLAGS: 00010283 RAX: ffffffff81e0c428 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90004312000 RSI: 000000000000108e RDI: 000000000000108f RBP: ffffc90000c66c70 R08: ffffffff81e0b73f R09: ffffed102ca71a61 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811632a3c8 R13: 0000000000000001 R14: 1ffff11022c65479 R15: 1ffff9200018cd7c FS: 00007fad7ee13700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3082e000 CR3: 000000010ad36000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400