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kernel BUG at fs/ext4/extents.c:2135!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 317 Comm: kworker/u4:3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work
RIP: 0010:ext4_ext_insert_extent+0x4592/0x45d0 fs/ext4/extents.c:2135
Code: ff ff 89 d9 80 e1 07 fe c1 38 c1 0f 8c 08 e9 ff ff 48 89 df e8 6f 51 d4 ff e9 fb e8 ff ff e8 95 d0 99 ff 0f 0b e8 8e d0 99 ff <0f> 0b e8 87 d0 99 ff 0f 0b 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 30
RSP: 0018:ffffc90000be7500 EFLAGS: 00010293
RAX: ffffffff81cae5c2 RBX: ffff888132021400 RCX: ffff88812fc52780
RDX: 0000000000000000 RSI: 0000000000000047 RDI: 0000000000000047
RBP: ffffc90000be76b0 R08: ffff888132403007 R09: 1ffff11026480600
R10: dffffc0000000000 R11: ffffed1026480601 R12: 0000000000000047
R13: 1ffff11022f23e88 R14: ffff888132021484 R15: 0000000000000047
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f787537d000 CR3: 0000000113719000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_ext_map_blocks+0x17a9/0x5dd0 fs/ext4/extents.c:4356
 ext4_map_blocks+0x985/0x1bd0 fs/ext4/inode.c:674
 ext4_convert_unwritten_extents+0x227/0x400 fs/ext4/extents.c:4862
 ext4_convert_unwritten_io_end_vec+0x103/0x180 fs/ext4/extents.c:4901
 ext4_end_io_end fs/ext4/page-io.c:189 [inline]
 ext4_do_flush_completed_IO fs/ext4/page-io.c:262 [inline]
 ext4_end_io_rsv_work+0x2c1/0x610 fs/ext4/page-io.c:276
 process_one_work+0x6e1/0xba0 kernel/workqueue.c:2301
 worker_thread+0xa6a/0x13c0 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 e0814fdc141b8ee9 ]---
RIP: 0010:ext4_ext_insert_extent+0x4592/0x45d0 fs/ext4/extents.c:2135
Code: ff ff 89 d9 80 e1 07 fe c1 38 c1 0f 8c 08 e9 ff ff 48 89 df e8 6f 51 d4 ff e9 fb e8 ff ff e8 95 d0 99 ff 0f 0b e8 8e d0 99 ff <0f> 0b e8 87 d0 99 ff 0f 0b 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 30
RSP: 0018:ffffc90000be7500 EFLAGS: 00010293

RAX: ffffffff81cae5c2 RBX: ffff888132021400 RCX: ffff88812fc52780
RDX: 0000000000000000 RSI: 0000000000000047 RDI: 0000000000000047
RBP: ffffc90000be76b0 R08: ffff888132403007 R09: 1ffff11026480600
R10: dffffc0000000000 R11: ffffed1026480601 R12: 0000000000000047
R13: 1ffff11022f23e88 R14: ffff888132021484 R15: 0000000000000047
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006cf7000 CR3: 000000012e501000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400