------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2816!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 18812 Comm: syz.4.734 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:ext4_do_writepages+0x476b/0x4770 fs/ext4/inode.c:2815
Code: c6 a0 73 85 8b e8 55 49 a1 fe 90 0f 0b e8 4d 36 40 ff 4c 89 f7 48 c7 c6 80 78 85 8b e8 3e 49 a1 fe 90 0f 0b e8 36 36 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:ffffc9000577efa0 EFLAGS: 00010293
RAX: ffffffff82867e7a RBX: 0000004210000000 RCX: ffff88806014be80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000577f3b0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100c1572dd R12: ffff88803fe4c268
R13: dffffc0000000000 R14: 0000004000000000 R15: ffff888060ab9940
FS:  0000555569e36500(0000) GS:ffff888125cc8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055eb64fd6950 CR3: 000000006750c000 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_flush_range mm/filemap.c:436 [inline]
 filemap_flush+0x1e4/0x2f0 mm/filemap.c:451
 ext4_convert_inline_data+0x189/0x5c0 fs/ext4/inline.c:1990
 ext4_page_mkwrite+0x248/0x1150 fs/ext4/inode.c:6906
 do_page_mkwrite+0x14a/0x310 mm/memory.c:3816
 wp_page_shared mm/memory.c:4217 [inline]
 do_wp_page+0x20a7/0x3d20 mm/memory.c:4440
 handle_pte_fault mm/memory.c:6582 [inline]
 __handle_mm_fault mm/memory.c:6707 [inline]
 handle_mm_fault+0xd69/0x28c0 mm/memory.c:6876
 do_user_addr_fault+0xa4f/0x1340 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f395f3ccfeb
Code: fa 10 73 2d 83 fa 08 73 46 83 fa 04 73 16 83 fa 01 7c 10 8a 0e 74 0a 0f b7 74 16 fe 66 89 74 17 fe 88 0f c3 8b 4c 16 fc 8b 36 <89> 4c 17 fc 89 37 c3 c5 fa 6f 06 c5 fa 6f 4c 16 f0 c5 fa 7f 07 c5
RSP: 002b:00007ffc43390a68 EFLAGS: 00010202
RAX: 0000200000000680 RBX: 0000000000000004 RCX: 0000000000347478
RDX: 0000000000000005 RSI: 0000000034747865 RDI: 0000200000000680
RBP: fffffffffffffffe R08: 0000001b31820000 R09: 0000000000000001
R10: 7ffffffffffffffa R11: 0000000000000009 R12: 00007ffc43390b90
R13: 00007f395f68609c R14: 000000000015b28a R15: 00007ffc43390b70
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x476b/0x4770 fs/ext4/inode.c:2815
Code: c6 a0 73 85 8b e8 55 49 a1 fe 90 0f 0b e8 4d 36 40 ff 4c 89 f7 48 c7 c6 80 78 85 8b e8 3e 49 a1 fe 90 0f 0b e8 36 36 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:ffffc9000577efa0 EFLAGS: 00010293
RAX: ffffffff82867e7a RBX: 0000004210000000 RCX: ffff88806014be80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000577f3b0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100c1572dd R12: ffff88803fe4c268
R13: dffffc0000000000 R14: 0000004000000000 R15: ffff888060ab9940
FS:  0000555569e36500(0000) GS:ffff888125cc8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055eb64fd6950 CR3: 000000006750c000 CR4: 00000000003526f0