Oops: general protection fault, probably for non-canonical address 0xdffffc001fffc005: 0000 [#1] SMP KASAN PTI
KASAN: probably user-memory-access in range [0x00000000fffe0028-0x00000000fffe002f]
CPU: 0 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted 6.16.0-rc7-syzkaller-00034-g25fae0b93d1d #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: netns cleanup_net
RIP: 0010:kasan_byte_accessible+0x12/0x30 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 e9 d0 6b 49 09 cc 66 66 66 66 66 66 2e
RSP: 0000:ffffc90000127670 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffffffff8b69127e RCX: 61c945b1c8de2200
RDX: 0000000000000000 RSI: ffffffff8b69127e RDI: 000000001fffc005
RBP: ffffffff8b5ce7da R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100ab463a5 R12: 0000000000000000
R13: 00000000fffe0028 R14: 00000000fffe0028 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff888125c57000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555581455c8 CR3: 00000000336e2000 CR4: 00000000003526f0
Call Trace:
<TASK>
__kasan_check_byte+0x12/0x40 mm/kasan/common.c:556
kasan_check_byte include/linux/kasan.h:399 [inline]
lock_acquire+0x8d/0x360 kernel/locking/lockdep.c:5845
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
kobj_kset_leave lib/kobject.c:191 [inline]
__kobject_del+0x12a/0x300 lib/kobject.c:608
kobject_del+0x45/0x60 lib/kobject.c:627
destroy_gid_attrs drivers/infiniband/core/sysfs.c:1183 [inline]
ib_free_port_attrs+0xcd/0x3b0 drivers/infiniband/core/sysfs.c:1407
remove_one_compat_dev drivers/infiniband/core/device.c:1001 [inline]
rdma_dev_exit_net+0x1d8/0x340 drivers/infiniband/core/device.c:1139
ops_exit_list net/core/net_namespace.c:200 [inline]
ops_undo_list+0x49a/0x990 net/core/net_namespace.c:253
cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
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+0x12/0x30 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 e9 d0 6b 49 09 cc 66 66 66 66 66 66 2e
RSP: 0000:ffffc90000127670 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffffffff8b69127e RCX: 61c945b1c8de2200
RDX: 0000000000000000 RSI: ffffffff8b69127e RDI: 000000001fffc005
RBP: ffffffff8b5ce7da R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100ab463a5 R12: 0000000000000000
R13: 00000000fffe0028 R14: 00000000fffe0028 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff888125c57000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555581455c8 CR3: 00000000336e2000 CR4: 00000000003526f0
----------------
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: e9 d0 6b 49 09 jmp 0x9496c08
38: cc int3
39: 66 data16
3a: 66 data16
3b: 66 data16
3c: 66 data16
3d: 66 data16
3e: 66 data16
3f: 2e cs