EXT4-fs error (device loop0): ext4_dirty_inode:6087: inode #16: comm syz-executor.0: mark_inode_dirty error ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3247! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 22824 Comm: syz-executor.0 Not tainted 5.10.178-syzkaller-00238-g8a30c9beebe8 #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 06 c1 89 ff 48 bb 00 00 00 00 00 fc ff df e9 23 f7 ff ff e8 f2 c0 89 ff e9 05 f7 ff ff e8 e8 c0 89 ff <0f> 0b e8 81 c7 c8 02 e8 dc c0 89 ff 0f 0b e8 d5 c0 89 ff 0f 0b e8 RSP: 0018:ffffc90001e26b60 EFLAGS: 00010287 RAX: ffffffff81e0b8c8 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90005151000 RSI: 000000000000e0f8 RDI: 000000000000e0f9 RBP: ffffc90001e26c70 R08: ffffffff81e0abdf R09: ffffed102f8fb6b0 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810df223c8 R13: 0000000000000001 R14: 1ffff11021be4479 R15: 1ffff920003c4d7c FS: 00007f2933343700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002057eff8 CR3: 0000000117649000 CR4: 00000000003506a0 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:5038 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:577 [inline] ext4_file_write_iter+0x10e8/0x1ca0 fs/ext4/file.c:687 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: 0033:0x7f293c9b1389 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:00007f2933343168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f293cad1050 RCX: 00007f293c9b1389 RDX: 0000000000000009 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f293c9fc493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffed5b58e3f R14: 00007f2933343300 R15: 0000000000022000 Modules linked in: ---[ end trace bb15ba3a371488f7 ]--- 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 06 c1 89 ff 48 bb 00 00 00 00 00 fc ff df e9 23 f7 ff ff e8 f2 c0 89 ff e9 05 f7 ff ff e8 e8 c0 89 ff <0f> 0b e8 81 c7 c8 02 e8 dc c0 89 ff 0f 0b e8 d5 c0 89 ff 0f 0b e8 RSP: 0018:ffffc90001e26b60 EFLAGS: 00010287 RAX: ffffffff81e0b8c8 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90005151000 RSI: 000000000000e0f8 RDI: 000000000000e0f9 RBP: ffffc90001e26c70 R08: ffffffff81e0abdf R09: ffffed102f8fb6b0 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810df223c8 R13: 0000000000000001 R14: 1ffff11021be4479 R15: 1ffff920003c4d7c FS: 00007f2933343700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200bd038 CR3: 0000000117649000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400