------------[ cut here ]------------
kernel BUG at fs/ext4/ext4_extents.h:199!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 2582 Comm: syz-executor.0 Not tainted 5.10.240-syzkaller-1008085-g1154f779f3f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:ext4_ext_mark_unwritten fs/ext4/ext4_extents.h:199 [inline]
RIP: 0010:ext4_split_extent_at+0xe75/0xe90 fs/ext4/extents.c:3198
Code: 68 e8 8f 89 d3 ff 48 8b 74 24 68 e9 5a fb ff ff e8 40 9a 99 ff 0f 0b e8 39 9a 99 ff 0f 0b e8 32 9a 99 ff 0f 0b e8 2b 9a 99 ff <0f> 0b e8 24 9a 99 ff 0f 0b e8 1d 9a 99 ff 0f 0b 66 2e 0f 1f 84 00
RSP: 0018:ffffc90000e36f80 EFLAGS: 00010293
RAX: ffffffff81ca0645 RBX: 0000000000000000 RCX: ffff88810eeba780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000e370f0 R08: dffffc0000000000 R09: ffffed10242c5fe4
R10: ffffed10242c5fe4 R11: 1ffff110242c5fe3 R12: 0000000000000001
R13: 1ffff920001c6e0c R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f3de271f6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020029000 CR3: 00000001100a9000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_split_extent+0x386/0x4e0 fs/ext4/extents.c:3380
 ext4_split_convert_extents fs/ext4/extents.c:3709 [inline]
 ext4_ext_handle_unwritten_extents fs/ext4/extents.c:3870 [inline]
 ext4_ext_map_blocks+0x1b3b/0x5d40 fs/ext4/extents.c:4225
 ext4_map_blocks+0x978/0x1bc0 fs/ext4/inode.c:674
 ext4_iomap_alloc fs/ext4/inode.c:3518 [inline]
 ext4_iomap_begin+0x6bb/0x910 fs/ext4/inode.c:3568
 iomap_apply+0x115/0x6a0 fs/iomap/apply.c:46
 __iomap_dio_rw+0x7ad/0x1110 fs/iomap/direct-io.c:527
 iomap_dio_rw+0x35/0x80 fs/iomap/direct-io.c:615
 ext4_dio_write_iter fs/ext4/file.c:573 [inline]
 ext4_file_write_iter+0xdbe/0x1980 fs/ext4/file.c:683
 call_write_iter include/linux/fs.h:2066 [inline]
 new_sync_write fs/read_write.c:518 [inline]
 vfs_write+0x725/0xd60 fs/read_write.c:605
 ksys_write+0x140/0x240 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+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f3deaf7d959
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:00007f3de271f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3deb09d050 RCX: 00007f3deaf7d959
RDX: 0000000000000012 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007f3deafd9c88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f3deb09d050 R15: 00007ffd7909a0c8
Modules linked in:
---[ end trace 9e73596a3ac30c30 ]---
RIP: 0010:ext4_ext_mark_unwritten fs/ext4/ext4_extents.h:199 [inline]
RIP: 0010:ext4_split_extent_at+0xe75/0xe90 fs/ext4/extents.c:3198
Code: 68 e8 8f 89 d3 ff 48 8b 74 24 68 e9 5a fb ff ff e8 40 9a 99 ff 0f 0b e8 39 9a 99 ff 0f 0b e8 32 9a 99 ff 0f 0b e8 2b 9a 99 ff <0f> 0b e8 24 9a 99 ff 0f 0b e8 1d 9a 99 ff 0f 0b 66 2e 0f 1f 84 00
RSP: 0018:ffffc90000e36f80 EFLAGS: 00010293
RAX: ffffffff81ca0645 RBX: 0000000000000000 RCX: ffff88810eeba780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000e370f0 R08: dffffc0000000000 R09: ffffed10242c5fe4
R10: ffffed10242c5fe4 R11: 1ffff110242c5fe3 R12: 0000000000000001
R13: 1ffff920001c6e0c R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f3de271f6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020029000 CR3: 00000001100a9000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400