EXT4-fs error (device loop0): ext4_fill_super:4831: inode #2: comm syz-executor.0: casefold flag without casefold feature
EXT4-fs (loop0): warning: mounting fs with errors, running e2fsck is recommended
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: none.
------------[ cut here ]------------
kernel BUG at fs/buffer.c:2074!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 574 Comm: syz-executor.0 Not tainted 5.15.139-syzkaller-1068892-g05ef4ccb5774 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:__block_commit_write+0x270/0x280 fs/buffer.c:2074
Code: ff 48 8b 5d b8 48 89 df be 08 00 00 00 e8 48 ca e7 ff f0 80 0b 04 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a0 d6 a5 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41 57
RSP: 0018:ffffc9000124f108 EFLAGS: 00010293
RAX: ffffffff81ca2860 RBX: 0000000000000000 RCX: ffff888115c662c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000124f158 R08: ffffffff81ca2653 R09: fffff940008ec7a1
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000148 R14: 4000000000000005 R15: ffffea0004763d00
FS:  00007f3a925e66c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3a92abe086 CR3: 0000000121826000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 block_write_end+0x47/0x90 fs/buffer.c:2164
 ext4_write_end+0x1f6/0xa00 fs/ext4/inode.c:1313
 ext4_da_write_end+0x88/0xab0 fs/ext4/inode.c:3071
 generic_perform_write+0x3b4/0x5a0 mm/filemap.c:3845
 ext4_buffered_write_iter+0x48a/0x610 fs/ext4/file.c:270
 ext4_file_write_iter+0x443/0x1c80
 do_iter_readv_writev+0x58e/0x790
 do_iter_write+0x1f5/0x760 fs/read_write.c:855
 vfs_iter_write+0x7c/0xa0 fs/read_write.c:896
 iter_file_splice_write+0x7f8/0xf90 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0xff/0x130 fs/splice.c:936
 splice_direct_to_actor+0x4f1/0xbe0 fs/splice.c:891
 do_splice_direct+0x27f/0x3c0 fs/splice.c:979
 do_sendfile+0x616/0xfe0 fs/read_write.c:1249
 __do_sys_sendfile64 fs/read_write.c:1317 [inline]
 __se_sys_sendfile64 fs/read_write.c:1303 [inline]
 __x64_sys_sendfile64+0x1ce/0x230 fs/read_write.c:1303
 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: 0033:0x7f3a92a63ae9
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:00007f3a925e60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f3a92b82f80 RCX: 00007f3a92a63ae9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007f3a92aaf47a R08: 0000000000000000 R09: 0000000000000000
R10: 000080001d00c0d0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f3a92b82f80 R15: 00007ffcbcf62d88
 </TASK>
Modules linked in:
---[ end trace b82044968dd6cace ]---
RIP: 0010:__block_commit_write+0x270/0x280 fs/buffer.c:2074
Code: ff 48 8b 5d b8 48 89 df be 08 00 00 00 e8 48 ca e7 ff f0 80 0b 04 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a0 d6 a5 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41 57
RSP: 0018:ffffc9000124f108 EFLAGS: 00010293
RAX: ffffffff81ca2860 RBX: 0000000000000000 RCX: ffff888115c662c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000124f158 R08: ffffffff81ca2653 R09: fffff940008ec7a1
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000148 R14: 4000000000000005 R15: ffffea0004763d00
FS:  00007f3a925e66c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 0000000121826000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400