Oops: general protection fault, probably for non-canonical address 0xe01ffbf110170c75: 0000 [#1] SMP KASAN PTI
KASAN: maybe wild-memory-access in range [0x00ffff8880b863a8-0x00ffff8880b863af]
CPU: 0 UID: 0 PID: 62 Comm: kworker/u8:4 Not tainted 6.15.0-rc2-syzkaller-00048-gc62f4b82d571 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:kasan_byte_accessible+0x12/0x20 mm/kasan/generic.c:199
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 c3 cc cc cc cc 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900000079f0 EFLAGS: 00010003
RAX: dffffc0000000000 RBX: 00ffff8880b863ad RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8c2b7dde RDI: 001ffff110170c75
RBP: ffffffff93657020 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100682c451 R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff8c2b7dde R15: 00ffff8880b863ad
FS: 0000000000000000(0000) GS:ffff888124fc9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30214ff8 CR3: 0000000034ec8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
__kasan_check_byte+0x14/0x40 mm/kasan/common.c:556
kasan_check_byte include/linux/kasan.h:399 [inline]
lock_acquire+0x89/0x2f0 kernel/locking/lockdep.c:5840
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
__queue_work+0x785/0x10a0 kernel/workqueue.c:-1
queue_work_on+0x1c4/0x380 kernel/workqueue.c:2392
queue_work include/linux/workqueue.h:662 [inline]
btree_node_write_endio+0x840/0xa90 fs/bcachefs/btree_io.c:2180
blk_update_request+0x5e5/0x1160 block/blk-mq.c:983
blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1145
blk_complete_reqs block/blk-mq.c:1220 [inline]
blk_done_softirq+0x100/0x150 block/blk-mq.c:1225
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579
do_softirq+0x11f/0x1e0 kernel/softirq.c:480
</IRQ>
<TASK>
__local_bh_enable_ip+0x1be/0x200 kernel/softirq.c:407
spin_unlock_bh include/linux/spinlock.h:396 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]
nsim_dev_trap_report_work+0x7c9/0xb50 drivers/net/netdevsim/dev.c:851
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd50 kernel/workqueue.c:3400
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x12/0x20 mm/kasan/generic.c:199
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 c3 cc cc cc cc 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900000079f0 EFLAGS: 00010003
RAX: dffffc0000000000 RBX: 00ffff8880b863ad RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8c2b7dde RDI: 001ffff110170c75
RBP: ffffffff93657020 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100682c451 R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff8c2b7dde R15: 00ffff8880b863ad
FS: 0000000000000000(0000) GS:ffff888124fc9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30214ff8 CR3: 0000000034ec8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
7: 00
8: 90 nop
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 66 0f 1f 00 nopw (%rax)
1c: 48 c1 ef 03 shr $0x3,%rdi
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 0f b6 04 07 movzbl (%rdi,%rax,1),%eax <-- trapping instruction
2e: 3c 08 cmp $0x8,%al
30: 0f 92 c0 setb %al
33: c3 ret
34: cc int3
35: cc int3
36: cc int3
37: cc int3
38: 90 nop
39: 90 nop
3a: 90 nop
3b: 90 nop
3c: 90 nop
3d: 90 nop
3e: 90 nop
3f: 90 nop