------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2734!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4904 Comm: syz.2.73 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:ext4_writepages+0x2d12/0x2d20 fs/ext4/inode.c:2733
Code: c1 03 38 c1 0f 8c b0 fd ff ff 4c 89 e7 e8 b6 cf b2 ff e9 a3 fd ff ff e8 8c 69 6e ff 0f 0b e8 85 69 6e ff 0f 0b e8 7e 69 6e ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 41 56 53 48 89 fb
RSP: 0018:ffffc90003aaf440 EFLAGS: 00010287
RAX: ffffffff82096132 RBX: 0000008410000000 RCX: 0000000000080000
RDX: ffffc90005981000 RSI: 0000000000005b2c RDI: 0000000000005b2d
RBP: ffffc90003aaf790 R08: dffffc0000000000 R09: ffffed100b886b42
R10: ffffed100b886b42 R11: 1ffff1100b886b41 R12: 1ffff92000755f34
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff8880283c0000
FS:  00007f0bcae3c6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000006000 CR3: 000000002becb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x48d/0x6d0 mm/page-writeback.c:2386
 filemap_fdatawrite_wbc+0x1eb/0x240 mm/filemap.c:400
 __filemap_fdatawrite_range mm/filemap.c:433 [inline]
 file_write_and_wait_range+0x129/0x1e0 mm/filemap.c:810
 ext4_sync_file+0x1ff/0xae0 fs/ext4/fsync.c:151
 generic_write_sync include/linux/fs.h:2989 [inline]
 ext4_buffered_write_iter+0x338/0x3b0 fs/ext4/file.c:275
 ext4_file_write_iter+0x773/0x17b0 fs/ext4/file.c:-1
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x712/0xd00 fs/read_write.c:594
 ksys_pwrite64 fs/read_write.c:701 [inline]
 __do_sys_pwrite64 fs/read_write.c:711 [inline]
 __se_sys_pwrite64 fs/read_write.c:708 [inline]
 __x64_sys_pwrite64+0x194/0x220 fs/read_write.c:708
 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: 0033:0x7f0bccbd4be9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0bcae3c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f0bcce0bfa0 RCX: 00007f0bccbd4be9
RDX: 0000000000000001 RSI: 0000200000000880 RDI: 0000000000000004
RBP: 00007f0bccc57e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000083 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0bcce0c038 R14: 00007f0bcce0bfa0 R15: 00007ffdacba9f78
 </TASK>
Modules linked in:
---[ end trace 013df48faa71b86a ]---
RIP: 0010:ext4_writepages+0x2d12/0x2d20 fs/ext4/inode.c:2733
Code: c1 03 38 c1 0f 8c b0 fd ff ff 4c 89 e7 e8 b6 cf b2 ff e9 a3 fd ff ff e8 8c 69 6e ff 0f 0b e8 85 69 6e ff 0f 0b e8 7e 69 6e ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 41 56 53 48 89 fb
RSP: 0018:ffffc90003aaf440 EFLAGS: 00010287
RAX: ffffffff82096132 RBX: 0000008410000000 RCX: 0000000000080000
RDX: ffffc90005981000 RSI: 0000000000005b2c RDI: 0000000000005b2d
RBP: ffffc90003aaf790 R08: dffffc0000000000 R09: ffffed100b886b42
R10: ffffed100b886b42 R11: 1ffff1100b886b41 R12: 1ffff92000755f34
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff8880283c0000
FS:  00007f0bcae3c6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3231cff8 CR3: 000000002becb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400