------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2749!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 10112 Comm: syz.3.2422 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:ext4_writepages+0x3080/0x30a0 fs/ext4/inode.c:2748
Code: d0 8d ff 84 db 75 31 e8 ae cd 8d ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 64 24 20 48 8b 5c 24 40 e9 99 f7 ff ff e8 90 cd 8d ff <0f> 0b e8 89 cd 8d ff e8 30 7f 24 ff eb 98 e8 7d cd 8d ff e8 24 7f
RSP: 0018:ffffc90000c5f140 EFLAGS: 00010287
RAX: ffffffff81dbfa10 RBX: 0000008410000000 RCX: 0000000000080000
RDX: ffffc900022ba000 RSI: 00000000000000da RDI: 00000000000000db
RBP: ffffc90000c5f4b0 R08: ffff888134ea5dd7 R09: 1ffff110269d4bba
R10: dffffc0000000000 R11: ffffed10269d4bbb R12: ffff888110caa000
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff888134ea5dd0
FS:  00007fd39a9286c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd39a927ff8 CR3: 0000000125c7b000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x476/0x6d0 mm/page-writeback.c:2388
 filemap_fdatawrite_wbc+0x1f4/0x250 mm/filemap.c:409
 __filemap_fdatawrite_range mm/filemap.c:442 [inline]
 filemap_write_and_wait_range+0x126/0x3b0 mm/filemap.c:713
 filemap_write_and_wait include/linux/fs.h:2953 [inline]
 fiemap_prep+0x1ff/0x250 fs/ioctl.c:194
 iomap_fiemap+0x113/0x540 fs/iomap/fiemap.c:75
 ext4_fiemap+0x27e/0x310 fs/ext4/extents.c:-1
 ioctl_fiemap fs/ioctl.c:219 [inline]
 do_vfs_ioctl+0x13bd/0x1d80 fs/ioctl.c:814
 __do_sys_ioctl fs/ioctl.c:872 [inline]
 __se_sys_ioctl+0x9f/0x1a0 fs/ioctl.c:860
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860
 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd39bef0159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd39a928028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd39c178090 RCX: 00007fd39bef0159
RDX: 00002000000001c0 RSI: 00000000c020660b RDI: 0000000000000005
RBP: 00007fd39bf8706b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd39c178128 R14: 00007fd39c178090 R15: 00007ffdcffcdc38
 </TASK>
Modules linked in:
---[ end trace ac7c60e94d3d0fb5 ]---
RIP: 0010:ext4_writepages+0x3080/0x30a0 fs/ext4/inode.c:2748
Code: d0 8d ff 84 db 75 31 e8 ae cd 8d ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 64 24 20 48 8b 5c 24 40 e9 99 f7 ff ff e8 90 cd 8d ff <0f> 0b e8 89 cd 8d ff e8 30 7f 24 ff eb 98 e8 7d cd 8d ff e8 24 7f
RSP: 0018:ffffc90000c5f140 EFLAGS: 00010287
RAX: ffffffff81dbfa10 RBX: 0000008410000000 RCX: 0000000000080000
RDX: ffffc900022ba000 RSI: 00000000000000da RDI: 00000000000000db
RBP: ffffc90000c5f4b0 R08: ffff888134ea5dd7 R09: 1ffff110269d4bba
R10: dffffc0000000000 R11: ffffed10269d4bbb R12: ffff888110caa000
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff888134ea5dd0
FS:  00007fd39a9286c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd39bf3d840 CR3: 0000000125c7b000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400