------------[ cut here ]------------
kernel BUG at fs/f2fs/data.c:387!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 15184 Comm: kworker/u8:36 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:f2fs_write_end_io+0xfb9/0xff0 fs/f2fs/data.c:387
Code: c6 a0 9e 9a 8b e8 77 51 fa fc 90 0f 0b e8 1f 10 97 fd 4c 89 ef 48 c7 c6 a0 9e 9a 8b e8 60 51 fa fc 90 0f 0b e8 08 10 97 fd 90 <0f> 0b e8 00 10 97 fd 4c 89 ef 48 c7 c6 a0 9e 9a 8b e8 41 51 fa fc
RSP: 0018:ffffc90004bdf730 EFLAGS: 00010246
RAX: ffffffff842d7108 RBX: 0000000000000000 RCX: ffff88801ff35b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000100
RBP: 00000000401cb000 R08: 0000000000000000 R09: 0000000000000100
R10: dffffc0000000000 R11: fffffbfff1ed4f17 R12: 0000000000000006
R13: ffffea00010072c0 R14: 000000000000000b R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888126332000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2968ea3000 CR3: 000000009a22a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 blk_update_request+0x57e/0xe60 block/blk-mq.c:1016
 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1178
 blk_complete_reqs block/blk-mq.c:1253 [inline]
 blk_done_softirq+0x10a/0x160 block/blk-mq.c:1258
 handle_softirqs+0x1de/0x6f0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 __local_bh_enable_ip+0x170/0x2b0 kernel/softirq.c:302
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 __alloc_skb+0x1aa/0x7d0 net/core/skbuff.c:697
 alloc_skb include/linux/skbuff.h:1383 [inline]
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:819 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:876 [inline]
 nsim_dev_trap_report_work+0x29f/0xbc0 drivers/net/netdevsim/dev.c:922
 process_one_work kernel/workqueue.c:3276 [inline]
 process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:f2fs_write_end_io+0xfb9/0xff0 fs/f2fs/data.c:387
Code: c6 a0 9e 9a 8b e8 77 51 fa fc 90 0f 0b e8 1f 10 97 fd 4c 89 ef 48 c7 c6 a0 9e 9a 8b e8 60 51 fa fc 90 0f 0b e8 08 10 97 fd 90 <0f> 0b e8 00 10 97 fd 4c 89 ef 48 c7 c6 a0 9e 9a 8b e8 41 51 fa fc
RSP: 0018:ffffc90004bdf730 EFLAGS: 00010246
RAX: ffffffff842d7108 RBX: 0000000000000000 RCX: ffff88801ff35b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000100
RBP: 00000000401cb000 R08: 0000000000000000 R09: 0000000000000100
R10: dffffc0000000000 R11: fffffbfff1ed4f17 R12: 0000000000000006
R13: ffffea00010072c0 R14: 000000000000000b R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888126332000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2968ea3000 CR3: 000000009a22a000 CR4: 00000000003526f0