EXT4-fs error (device loop4): ext4_dirty_inode:6107: inode #19: comm syz-executor.4: mark_inode_dirty error ------------[ cut here ]------------ kernel BUG at fs/ext4/mballoc.c:3832! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4450 Comm: syz-executor.4 Not tainted 5.10.226-syzkaller-1003431-ge5e5644ea27f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:ext4_mb_use_inode_pa+0x51e/0x530 fs/ext4/mballoc.c:3832 Code: c1 03 38 c1 0f 8c 10 fe ff ff 4c 89 ff e8 6a a7 c6 ff e9 03 fe ff ff e8 00 0d 89 ff 0f 0b e8 f9 0c 89 ff 0f 0b e8 f2 0c 89 ff <0f> 0b e8 eb 0c 89 ff 0f 0b 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 RSP: 0018:ffffc90002936978 EFLAGS: 00010293 RAX: ffffffff81e19ffe RBX: 00000000ffffffff RCX: ffff888115f08000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000002 RBP: ffffc900029369e8 R08: ffffffff81e19db3 R09: ffffed1024574396 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000003 R13: ffff8881251e8bb0 R14: 1ffff11024574399 R15: ffff888122ba1cc8 FS: 00007f19c35456c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200bb000 CR3: 0000000114925000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_use_preallocated+0xa3e/0xbf0 fs/ext4/mballoc.c:3930 ext4_mb_new_blocks+0x653/0x43e0 fs/ext4/mballoc.c:5234 ext4_ext_map_blocks+0x1a00/0x6ee0 fs/ext4/extents.c:4312 ext4_map_blocks+0xa65/0x1d10 fs/ext4/inode.c:673 _ext4_get_block+0x21b/0x610 fs/ext4/inode.c:816 ext4_get_block_unwritten+0x2a/0x40 fs/ext4/inode.c:847 ext4_block_write_begin+0x61e/0x13b0 fs/ext4/inode.c:1100 ext4_write_begin+0x6fa/0x1730 ext4_da_write_begin+0x49d/0xf60 fs/ext4/inode.c:3032 generic_perform_write+0x2cd/0x570 mm/filemap.c:3509 ext4_buffered_write_iter+0x482/0x610 fs/ext4/file.c:271 ext4_file_write_iter+0x193/0x1c80 fs/ext4/file.c:685 call_write_iter include/linux/fs.h:2021 [inline] new_sync_write fs/read_write.c:518 [inline] vfs_write+0xb4c/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+0x61/0xcb RIP: 0033:0x7f19c39c28d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f19c35450c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f19c3ae1f80 RCX: 00007f19c39c28d9 RDX: 000000000208e24b RSI: 0000000020000000 RDI: 0000000000000006 RBP: 00007f19c3a1ead0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f19c3ae1f80 R15: 00007ffdbdd04ca8 Modules linked in: ---[ end trace df62c30779e21cac ]--- RIP: 0010:ext4_mb_use_inode_pa+0x51e/0x530 fs/ext4/mballoc.c:3832 Code: c1 03 38 c1 0f 8c 10 fe ff ff 4c 89 ff e8 6a a7 c6 ff e9 03 fe ff ff e8 00 0d 89 ff 0f 0b e8 f9 0c 89 ff 0f 0b e8 f2 0c 89 ff <0f> 0b e8 eb 0c 89 ff 0f 0b 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 RSP: 0018:ffffc90002936978 EFLAGS: 00010293 RAX: ffffffff81e19ffe RBX: 00000000ffffffff RCX: ffff888115f08000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000002 RBP: ffffc900029369e8 R08: ffffffff81e19db3 R09: ffffed1024574396 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000003 R13: ffff8881251e8bb0 R14: 1ffff11024574399 R15: ffff888122ba1cc8 FS: 00007f19c35456c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200bb000 CR3: 0000000114925000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400