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kernel BUG at fs/ext4/extents.c:3180!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 7 Comm: kworker/u4:0 Not tainted 5.10.237-syzkaller-1007464-g7e2543346ff7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: writeback wb_workfn (flush-7:2)
RIP: 0010:ext4_split_extent_at+0xe6e/0xe90 fs/ext4/extents.c:3180
Code: 48 89 df 48 89 74 24 68 e8 ef 8b d3 ff 48 8b 74 24 68 e9 5a fb ff ff e8 60 9c 99 ff 0f 0b e8 59 9c 99 ff 0f 0b e8 52 9c 99 ff <0f> 0b e8 4b 9c 99 ff 0f 0b e8 44 9c 99 ff 0f 0b e8 3d 9c 99 ff 0f
RSP: 0018:ffffc90000076b20 EFLAGS: 00010293
RAX: ffffffff81c9f6ae RBX: 0000000000000000 RCX: ffff88810024cf00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000076c90 R08: 0000000000000010 R09: 000000000000043b
R10: ffffed1022dec2ea R11: 1ffff11022dec2e8 R12: 0000000000000010
R13: 0000000000000000 R14: 1ffff110253a53ff R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f35f2d23710 CR3: 000000010cbdd000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_split_extent+0x386/0x4e0 fs/ext4/extents.c:3379
 ext4_split_convert_extents fs/ext4/extents.c:3708 [inline]
 ext4_ext_handle_unwritten_extents fs/ext4/extents.c:3869 [inline]
 ext4_ext_map_blocks+0x1b38/0x5d40 fs/ext4/extents.c:4224
 ext4_map_blocks+0x978/0x1bc0 fs/ext4/inode.c:674
 mpage_map_one_extent fs/ext4/inode.c:2452 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2505 [inline]
 ext4_writepages+0x11d5/0x2e00 fs/ext4/inode.c:2873
 do_writepages+0x12a/0x270 mm/page-writeback.c:2380
 __writeback_single_inode+0xd5/0xa20 fs/fs-writeback.c:1470
 writeback_sb_inodes+0x860/0x1400 fs/fs-writeback.c:1733
 wb_writeback+0x3e3/0xb90 fs/fs-writeback.c:1908
 wb_do_writeback fs/fs-writeback.c:2053 [inline]
 wb_workfn+0x38f/0xe20 fs/fs-writeback.c:2094
 process_one_work+0x6e1/0xba0 kernel/workqueue.c:2301
 worker_thread+0xa6a/0x13b0 kernel/workqueue.c:2447
 kthread+0x346/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Modules linked in:
---[ end trace 790eafe51529fa87 ]---
RIP: 0010:ext4_split_extent_at+0xe6e/0xe90 fs/ext4/extents.c:3180
Code: 48 89 df 48 89 74 24 68 e8 ef 8b d3 ff 48 8b 74 24 68 e9 5a fb ff ff e8 60 9c 99 ff 0f 0b e8 59 9c 99 ff 0f 0b e8 52 9c 99 ff <0f> 0b e8 4b 9c 99 ff 0f 0b e8 44 9c 99 ff 0f 0b e8 3d 9c 99 ff 0f
RSP: 0018:ffffc90000076b20 EFLAGS: 00010293
RAX: ffffffff81c9f6ae RBX: 0000000000000000 RCX: ffff88810024cf00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000076c90 R08: 0000000000000010 R09: 000000000000043b
R10: ffffed1022dec2ea R11: 1ffff11022dec2e8 R12: 0000000000000010
R13: 0000000000000000 R14: 1ffff110253a53ff R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f35f2d23710 CR3: 000000010cbdd000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400