general protection fault, probably for non-canonical address 0xdffffc0000000182: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000c10-0x0000000000000c17]
CPU: 0 PID: 25604 Comm: kworker/u4:4 Not tainted 5.15.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:__ref_is_percpu include/linux/percpu-refcount.h:174 [inline]
RIP: 0010:percpu_ref_put_many include/linux/percpu-refcount.h:319 [inline]
RIP: 0010:percpu_ref_put include/linux/percpu-refcount.h:338 [inline]
RIP: 0010:cgroup_bpf_put include/linux/cgroup.h:926 [inline]
RIP: 0010:cgroup_sk_free+0x8d/0x570 kernel/cgroup/cgroup.c:6613
Code: 0e 06 00 40 84 ed 5a 0f 84 42 01 00 00 e8 0b 08 06 00 4c 8d ab 10 0c 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 6f 04 00 00 48 8b ab 10 0c 00 00 31 ff 49 89 ec
RSP: 0018:ffffc90000007c38 EFLAGS: 00010216
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: 0000000000000182 RSI: ffffffff816ff365 RDI: 0000000000000003
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff816ff356 R11: 0000000000000000 R12: ffff88807a3be000
R13: 0000000000000c10 R14: ffffffff8d0d0dcc R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055621a536aa8 CR3: 000000006d84d000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
sk_prot_free net/core/sock.c:1852 [inline]
__sk_destruct+0x579/0x900 net/core/sock.c:1943
sk_destruct+0xbd/0xe0 net/core/sock.c:1958
__sk_free+0xef/0x3d0 net/core/sock.c:1969
sk_free+0x78/0xa0 net/core/sock.c:1980
sock_put include/net/sock.h:1816 [inline]
nr_heartbeat_expiry+0x2e7/0x460 net/netrom/nr_timer.c:148
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734
__run_timers kernel/time/timer.c:1715 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:107 [inline]
RIP: 0010:lock_is_held_type+0x54/0x140 kernel/locking/lockdep.c:5664
Code: c0 0f 85 c8 00 00 00 65 4c 8b 24 25 40 f0 01 00 41 8b 94 24 f4 09 00 00 85 d2 0f 85 af 00 00 00 48 89 fd 41 89 f6 9c 8f 04 24 48 c7 c7 80 fc 8b 89 31 db e8 fd 0d 00 00 41 8b 84 24 f0 09 00
RSP: 0018:ffffc900051cfad8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8b97fe00
RBP: ffffffff8b97fe00 R08: 000000000007ffff R09: 0000000000000000
R10: ffffffff87a00bf7 R11: 0000000000000000 R12: ffff888033eed580
R13: 00000000ffffffff R14: 00000000ffffffff R15: dffffc0000000000
lock_is_held include/linux/lockdep.h:283 [inline]
___might_sleep+0x21/0x2c0 kernel/sched/core.c:9504
inet_twsk_purge+0xe8/0x7d0 net/ipv4/inet_timewait_sock.c:267
ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171
cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:591
process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297
worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
kthread+0x3e5/0x4d0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
---[ end trace 85107f56942ca5de ]---
RIP: 0010:__ref_is_percpu include/linux/percpu-refcount.h:174 [inline]
RIP: 0010:percpu_ref_put_many include/linux/percpu-refcount.h:319 [inline]
RIP: 0010:percpu_ref_put include/linux/percpu-refcount.h:338 [inline]
RIP: 0010:cgroup_bpf_put include/linux/cgroup.h:926 [inline]
RIP: 0010:cgroup_sk_free+0x8d/0x570 kernel/cgroup/cgroup.c:6613
Code: 0e 06 00 40 84 ed 5a 0f 84 42 01 00 00 e8 0b 08 06 00 4c 8d ab 10 0c 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 6f 04 00 00 48 8b ab 10 0c 00 00 31 ff 49 89 ec
RSP: 0018:ffffc90000007c38 EFLAGS: 00010216
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: 0000000000000182 RSI: ffffffff816ff365 RDI: 0000000000000003
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff816ff356 R11: 0000000000000000 R12: ffff88807a3be000
R13: 0000000000000c10 R14: ffffffff8d0d0dcc R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055621a536aa8 CR3: 000000006d84d000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 00 40 84 add %al,-0x7c(%rax)
3: ed in (%dx),%eax
4: 5a pop %rdx
5: 0f 84 42 01 00 00 je 0x14d
b: e8 0b 08 06 00 callq 0x6081b
10: 4c 8d ab 10 0c 00 00 lea 0xc10(%rbx),%r13
17: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
1e: fc ff df
21: 4c 89 ea mov %r13,%rdx
24: 48 c1 ea 03 shr $0x3,%rdx
* 28: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2c: 0f 85 6f 04 00 00 jne 0x4a1
32: 48 8b ab 10 0c 00 00 mov 0xc10(%rbx),%rbp
39: 31 ff xor %edi,%edi
3b: 49 89 ec mov %rbp,%r12