EXT4-fs error (device loop1) in ext4_reserve_inode_write:5805: Corrupt filesystem EXT4-fs error (device loop1): ext4_dirty_inode:6009: inode #18: comm syz-executor.1: mark_inode_dirty error ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3355! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 32404 Comm: syz-executor.1 Not tainted 5.15.94-syzkaller-03204-g5448b2fda85f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3355 [inline] RIP: 0010:ext4_mb_find_by_goal+0xdf4/0xe30 fs/ext4/mballoc.c:2206 Code: c6 ff e9 b5 fb ff ff e8 7a 10 85 ff 49 bc 00 00 00 00 00 fc ff df e9 6f f7 ff ff e8 66 10 85 ff e9 51 f7 ff ff e8 5c 10 85 ff <0f> 0b e8 f5 71 c8 02 e8 50 10 85 ff 0f 0b e8 49 10 85 ff 0f 0b e8 RSP: 0018:ffffc90000bc6720 EFLAGS: 00010246 RAX: ffffffff81ea6164 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90008ad2000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc90000bc6830 R08: ffffffff81ea549b R09: ffffed102e8b8814 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11022f01879 R13: 0000000000000001 R14: 1ffff92000178cf4 R15: ffff88811780c3c8 FS: 00007f6c6b939700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000012297b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_regular_allocator+0x247/0x3810 fs/ext4/mballoc.c:2658 ext4_mb_new_blocks+0xe3c/0x43f0 fs/ext4/mballoc.c:5623 ext4_ext_map_blocks+0x1a0d/0x7250 fs/ext4/extents.c:4287 ext4_map_blocks+0xaa7/0x1e30 fs/ext4/inode.c:646 _ext4_get_block+0x23b/0x660 fs/ext4/inode.c:803 ext4_get_block+0x39/0x50 fs/ext4/inode.c:820 ext4_block_write_begin+0x5ea/0x12a0 fs/ext4/inode.c:1088 ext4_write_begin+0x6bc/0x13d0 ext4_da_write_begin+0x4a2/0xc30 fs/ext4/inode.c:2986 generic_perform_write+0x2bc/0x5a0 mm/filemap.c:3830 ext4_buffered_write_iter+0x49c/0x630 fs/ext4/file.c:271 ext4_file_write_iter+0x443/0x1cc0 call_write_iter include/linux/fs.h:2157 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0xd8a/0x1160 fs/read_write.c:594 ksys_write+0x199/0x2c0 fs/read_write.c:647 __do_sys_write fs/read_write.c:659 [inline] __se_sys_write fs/read_write.c:656 [inline] __x64_sys_write+0x7b/0x90 fs/read_write.c:656 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f6c6cbc60f9 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:00007f6c6b939168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f6c6cce5f80 RCX: 00007f6c6cbc60f9 RDX: 0000000000000008 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 00007f6c6cc21ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffdf6f077f R14: 00007f6c6b939300 R15: 0000000000022000 Modules linked in: ---[ end trace 89b53ee4c471ffbd ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3355 [inline] RIP: 0010:ext4_mb_find_by_goal+0xdf4/0xe30 fs/ext4/mballoc.c:2206 Code: c6 ff e9 b5 fb ff ff e8 7a 10 85 ff 49 bc 00 00 00 00 00 fc ff df e9 6f f7 ff ff e8 66 10 85 ff e9 51 f7 ff ff e8 5c 10 85 ff <0f> 0b e8 f5 71 c8 02 e8 50 10 85 ff 0f 0b e8 49 10 85 ff 0f 0b e8 RSP: 0018:ffffc90000bc6720 EFLAGS: 00010246 RAX: ffffffff81ea6164 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90008ad2000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc90000bc6830 R08: ffffffff81ea549b R09: ffffed102e8b8814 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11022f01879 R13: 0000000000000001 R14: 1ffff92000178cf4 R15: ffff88811780c3c8 FS: 00007f6c6b939700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020110030 CR3: 000000012297b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400