INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 1 PID: 7861 Comm: syz-executor.3 Not tainted 6.2.0-rc7-syzkaller-01624-g168de0233586 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
assign_lock_key kernel/locking/lockdep.c:981 [inline]
register_lock_class+0xf1b/0x1120 kernel/locking/lockdep.c:1294
__lock_acquire+0x109/0x56d0 kernel/locking/lockdep.c:4934
lock_acquire kernel/locking/lockdep.c:5668 [inline]
lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3d/0x60 kernel/locking/spinlock.c:162
ref_tracker_dir_exit+0x54/0x3e0 lib/ref_tracker.c:24
net_free net/core/net_namespace.c:442 [inline]
net_free+0x98/0xd0 net/core/net_namespace.c:436
copy_net_ns+0x4ee/0x6b0 net/core/net_namespace.c:493
create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
copy_namespaces+0x3b3/0x4a0 kernel/nsproxy.c:179
copy_process+0x30df/0x7530 kernel/fork.c:2269
kernel_clone+0xeb/0x9f0 kernel/fork.c:2681
__do_sys_clone+0xba/0x100 kernel/fork.c:2822
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f78fc88c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f78fd4fc118 EFLAGS: 00000202
ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f78fc9ac050 RCX: 00007f78fc88c0f9
RDX: 0000000020000100 RSI: 0000000020000070 RDI: 0000000040000080
RBP: 00007f78fc8e7ae9 R08: 0000000020000180 R09: 0000000020000180
R10: 0000000020000140 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffc336d733f R14: 00007f78fd4fc300 R15: 0000000000022000
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#2] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 7861 Comm: syz-executor.3 Tainted: G D 6.2.0-rc7-syzkaller-01624-g168de0233586 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RIP: 0010:ref_tracker_dir_exit+0x96/0x3e0 lib/ref_tracker.c:25
Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 4f 03 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 74 24 60 4c 89 f2 4d 89 f7 48 c1 ea 03 <80> 3c 02 00 0f 85 1f 03 00 00 4c 39 34 24 49 8b 2e 0f 84 34 01 00
RSP: 0018:ffffc9000361fa28 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff81640144
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc9000361f998
RBP: ffff88801cc29cc0 R08: 0000000000000001 R09: 0000000000000003
R10: fffff520006c3f33 R11: 313030203a504952 R12: ffff88801cc29e80
R13: ffffffff8c65f3c0 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f78fd4fc700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4294384998 CR3: 000000005b351000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
net_free net/core/net_namespace.c:442 [inline]
net_free+0x98/0xd0 net/core/net_namespace.c:436
copy_net_ns+0x4ee/0x6b0 net/core/net_namespace.c:493
create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
copy_namespaces+0x3b3/0x4a0 kernel/nsproxy.c:179
copy_process+0x30df/0x7530 kernel/fork.c:2269
kernel_clone+0xeb/0x9f0 kernel/fork.c:2681
__do_sys_clone+0xba/0x100 kernel/fork.c:2822
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f78fc88c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f78fd4fc118 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f78fc9ac050 RCX: 00007f78fc88c0f9
RDX: 0000000020000100 RSI: 0000000020000070 RDI: 0000000040000080
RBP: 00007f78fc8e7ae9 R08: 0000000020000180 R09: 0000000020000180
R10: 0000000020000140 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffc336d733f R14: 00007f78fd4fc300 R15: 0000000000022000
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ref_tracker_dir_exit+0x96/0x3e0 lib/ref_tracker.c:25
Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 4f 03 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 74 24 60 4c 89 f2 4d 89 f7 48 c1 ea 03 <80> 3c 02 00 0f 85 1f 03 00 00 4c 39 34 24 49 8b 2e 0f 84 34 01 00
RSP: 0018:ffffc9000360fa28 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff81640144
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc9000360f998
RBP: ffff88807c4f8000 R08: 0000000000000001 R09: 0000000000000003
R10: fffff520006c1f33 R11: 0000000000094001 R12: ffff88807c4f81c0
R13: ffffffff8c65f3c0 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f78fd4fc700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4294384998 CR3: 000000005b351000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 3 bytes skipped:
0: 48 c1 ea 03 shr $0x3,%rdx
4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
8: 0f 85 4f 03 00 00 jne 0x35d
e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
15: fc ff df
18: 4d 8b 74 24 60 mov 0x60(%r12),%r14
1d: 4c 89 f2 mov %r14,%rdx
20: 4d 89 f7 mov %r14,%r15
23: 48 c1 ea 03 shr $0x3,%rdx
* 27: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2b: 0f 85 1f 03 00 00 jne 0x350
31: 4c 39 34 24 cmp %r14,(%rsp)
35: 49 8b 2e mov (%r14),%rbp
38: 0f .byte 0xf
39: 84 34 01 test %dh,(%rcx,%rax,1)