EXT4-fs error (device loop5): ext4_dirty_inode:5919: inode #18: comm syz-executor.5: mark_inode_dirty error ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3241! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 30326 Comm: syz-executor.5 Not tainted 6.3.0-syzkaller-05127-g5c7ecada25d2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3241 Code: 4f ff 8b 74 24 04 48 c7 c7 80 b2 0b 8d 4c 89 f2 e8 fc b8 2d 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 97 71 4f ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00 RSP: 0018:ffffc90007bb69e0 EFLAGS: 00010293 RAX: ffffffff823b9829 RBX: 0000000000000001 RCX: ffff888078a98000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff823b94f9 R09: ffffed100eda23cb R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11005ac00cf R13: dffffc0000000000 R14: ffff888030c44000 R15: ffff88802d600678 FS: 00007f8d06c30700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5cd6dab000 CR3: 000000007a97e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_find_by_goal+0x11c/0xd20 fs/ext4/mballoc.c:2159 ext4_mb_regular_allocator+0x250/0x38c0 fs/ext4/mballoc.c:2613 ext4_mb_new_blocks+0xe5f/0x44a0 fs/ext4/mballoc.c:5786 ext4_ext_map_blocks+0x1973/0x7210 fs/ext4/extents.c:4286 ext4_map_blocks+0xa4c/0x1cf0 fs/ext4/inode.c:623 _ext4_get_block+0x238/0x6a0 fs/ext4/inode.c:779 ext4_block_write_begin+0x53e/0x15a0 fs/ext4/inode.c:1059 ext4_write_begin+0x60a/0x10a0 ext4_da_write_begin+0x300/0xa40 fs/ext4/inode.c:2891 generic_perform_write+0x300/0x5e0 mm/filemap.c:3926 ext4_buffered_write_iter+0x122/0x3a0 fs/ext4/file.c:289 ext4_file_write_iter+0x1d6/0x1930 call_write_iter include/linux/fs.h:1851 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7da/0xbf0 fs/read_write.c:584 ksys_write+0x1a0/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f8d05e8c169 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:00007f8d06c30168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f8d05fabf80 RCX: 00007f8d05e8c169 RDX: 0000000000000004 RSI: 00000000200002c0 RDI: 0000000000000007 RBP: 00007f8d05ee7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeedf4a23f R14: 00007f8d06c30300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3241 Code: 4f ff 8b 74 24 04 48 c7 c7 80 b2 0b 8d 4c 89 f2 e8 fc b8 2d 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 97 71 4f ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00 RSP: 0018:ffffc90007bb69e0 EFLAGS: 00010293 RAX: ffffffff823b9829 RBX: 0000000000000001 RCX: ffff888078a98000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff823b94f9 R09: ffffed100eda23cb R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11005ac00cf R13: dffffc0000000000 R14: ffff888030c44000 R15: ffff88802d600678 FS: 00007f8d06c30700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd1e018e38 CR3: 000000007a97e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400