EXT4-fs error (device loop0): ext4_fill_super:4832: 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/ext4/inline.c:767! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 582 Comm: syz-executor.0 Not tainted 5.15.131-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:ext4_write_inline_data_end+0xe13/0xe30 fs/ext4/inline.c:767 Code: f8 ff ff 44 89 f9 80 e1 07 fe c1 38 c1 0f 8c 28 fa ff ff 4c 89 ff e8 7c c2 cd ff e9 1b fa ff ff e8 d2 89 bb 02 e8 ed e2 8e ff <0f> 0b e8 e6 e2 8e ff 0f 0b e8 df e2 8e ff 0f 0b e8 d8 e2 8e ff 0f RSP: 0000:ffffc90001007040 EFLAGS: 00010293 RAX: ffffffff81df3713 RBX: 0000000000000000 RCX: ffff88811777a200 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90001007198 R08: ffffffff81df2b80 R09: ffffed10234c851b R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000001c00000000 R15: 1ffff110234c851a FS: 00007faa54cb56c0(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 000000010e060000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_write_end+0x395/0x910 fs/ext4/inode.c:1299 ext4_da_write_end+0x88/0x9a0 fs/ext4/inode.c:3048 generic_perform_write+0x3b4/0x5a0 mm/filemap.c:3787 ext4_buffered_write_iter+0x485/0x610 fs/ext4/file.c:268 ext4_file_write_iter+0x193/0x1db0 fs/ext4/file.c:683 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: 0033:0x7faa55132ae9 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:00007faa54cb50c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007faa55251f80 RCX: 00007faa55132ae9 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006 RBP: 00007faa5517e47a R08: 0000000000000000 R09: 0000000000000000 R10: 000080001d00c0d0 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007faa55251f80 R15: 00007fff9e140cd8 Modules linked in: ---[ end trace 821dd14a55a5dd74 ]--- RIP: 0010:ext4_write_inline_data_end+0xe13/0xe30 fs/ext4/inline.c:767 Code: f8 ff ff 44 89 f9 80 e1 07 fe c1 38 c1 0f 8c 28 fa ff ff 4c 89 ff e8 7c c2 cd ff e9 1b fa ff ff e8 d2 89 bb 02 e8 ed e2 8e ff <0f> 0b e8 e6 e2 8e ff 0f 0b e8 df e2 8e ff 0f 0b e8 d8 e2 8e ff 0f RSP: 0000:ffffc90001007040 EFLAGS: 00010293 RAX: ffffffff81df3713 RBX: 0000000000000000 RCX: ffff88811777a200 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90001007198 R08: ffffffff81df2b80 R09: ffffed10234c851b R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000001c00000000 R15: 1ffff110234c851a FS: 00007faa54cb56c0(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faa5518d086 CR3: 000000010e060000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400