------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2816!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 6636 Comm: syz.0.111 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:ext4_do_writepages+0x476b/0x4770 fs/ext4/inode.c:2815
Code: c6 20 74 85 8b e8 35 fd a0 fe 90 0f 0b e8 ad 0d 40 ff 4c 89 f7 48 c7 c6 00 79 85 8b e8 1e fd a0 fe 90 0f 0b e8 96 0d 40 ff 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f
RSP: 0018:ffffc9000bd971c0 EFLAGS: 00010287
RAX: ffffffff8286ca9a RBX: 0000004210000000 RCX: 0000000000080000
RDX: ffffc9000ed0b000 RSI: 00000000000002ce RDI: 00000000000002cf
RBP: ffffc9000bd975d0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100c066e25 R12: ffff88803fde0528
R13: dffffc0000000000 R14: 0000004000000000 R15: ffff888060337380
FS:  00007f95f6f766c0(0000) GS:ffff888125cc3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f28643c04ac CR3: 000000003a1ea000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3032
 do_writepages+0x338/0x560 mm/page-writeback.c:2560
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_fdatawrite_range mm/filemap.c:412 [inline]
 file_write_and_wait_range+0x374/0x440 mm/filemap.c:786
 ext4_sync_file+0x255/0xa40 fs/ext4/fsync.c:145
 generic_write_sync include/linux/fs.h:2686 [inline]
 ext4_buffered_write_iter+0x2d3/0x380 fs/ext4/file.c:360
 ext4_file_write_iter+0xafc/0x1d00 fs/ext4/file.c:-1
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f95f8d1e159
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:00007f95f6f76028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f95f8fa5fa0 RCX: 00007f95f8d1e159
RDX: 0000000000000020 RSI: 0000200000000100 RDI: 0000000000000006
RBP: 00007f95f8db506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f95f8fa6038 R14: 00007f95f8fa5fa0 R15: 00007fff71d1e748
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x476b/0x4770 fs/ext4/inode.c:2815
Code: c6 20 74 85 8b e8 35 fd a0 fe 90 0f 0b e8 ad 0d 40 ff 4c 89 f7 48 c7 c6 00 79 85 8b e8 1e fd a0 fe 90 0f 0b e8 96 0d 40 ff 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f
RSP: 0018:ffffc9000bd971c0 EFLAGS: 00010287
RAX: ffffffff8286ca9a RBX: 0000004210000000 RCX: 0000000000080000
RDX: ffffc9000ed0b000 RSI: 00000000000002ce RDI: 00000000000002cf
RBP: ffffc9000bd975d0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100c066e25 R12: ffff88803fde0528
R13: dffffc0000000000 R14: 0000004000000000 R15: ffff888060337380
FS:  00007f95f6f766c0(0000) GS:ffff888125bc3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f286430ee9c CR3: 000000003a1ea000 CR4: 00000000003526f0