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: 19097 Comm: syz-executor.2 Not tainted 5.15.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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: 10 06 00 40 84 ed 5a 0f 84 42 01 00 00 e8 ab 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: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: 0000000000000182 RSI: ffffffff816f29b5 RDI: 0000000000000003
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff816f29a6 R11: 0000000000000000 R12: ffff888027905000
R13: 0000000000000c10 R14: ffffffff8d0cf10c R15: 0000000000000000
FS: 00007f3a020dd700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01d693000 CR3: 000000009f7d6000 CR4: 00000000003506f0
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:__local_bh_disable_ip+0x18/0xc0 kernel/softirq.c:310
Code: 83 ec 80 5b 5d c3 e8 d7 bc ef 07 0f 1f 80 00 00 00 00 65 8b 05 b9 80 bc 7e a9 00 00 0f 00 55 53 89 f3 0f 85 97 00 00 00 9c 5d 65 01 1d a0 80 bc 7e 65 8b 05 99 80 bc 7e 48 31 d8 f6 c4 ff 74
RSP: 0018:ffffc90008a2ebe0 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000200 RCX: ffffc9000da27000
RDX: 0000000000040000 RSI: 0000000000000200 RDI: ffffffff8761e76b
RBP: 0000000000000246 R08: 0000000000014e8f R09: ffffffff8fd00947
R10: ffffffff8761e762 R11: 0000000000000000 R12: 000000000000028f
R13: 0000000000014e8f R14: 0000000000000000 R15: 0000000000000001
local_bh_disable include/linux/bottom_half.h:19 [inline]
get_next_corpse net/netfilter/nf_conntrack_core.c:2229 [inline]
nf_ct_iterate_cleanup+0x1b0/0x450 net/netfilter/nf_conntrack_core.c:2275
nf_ct_iterate_cleanup_net net/netfilter/nf_conntrack_core.c:2363 [inline]
nf_ct_iterate_cleanup_net+0x236/0x400 net/netfilter/nf_conntrack_core.c:2347
masq_device_event+0xae/0xe0 net/netfilter/nf_nat_masquerade.c:88
notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1996
call_netdevice_notifiers_extack net/core/dev.c:2008 [inline]
call_netdevice_notifiers net/core/dev.c:2022 [inline]
__dev_notify_flags+0x1da/0x2b0 net/core/dev.c:8801
dev_change_flags+0x112/0x170 net/core/dev.c:8837
do_setlink+0x96d/0x3970 net/core/rtnetlink.c:2719
rtnl_group_changelink net/core/rtnetlink.c:3242 [inline]
__rtnl_newlink+0xc06/0x1750 net/core/rtnetlink.c:3396
rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3506
rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5572
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504
netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340
netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:724
____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
___sys_sendmsg+0xf3/0x170 net/socket.c:2463
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f3a04b66709
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3a020dd188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3a04c6af60 RCX: 00007f3a04b66709
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 00007f3a04bc0cb4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff6e21569f R14: 00007f3a020dd300 R15: 0000000000022000
Modules linked in:
---[ end trace 666d58979031282b ]---
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: 10 06 00 40 84 ed 5a 0f 84 42 01 00 00 e8 ab 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: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: 0000000000000182 RSI: ffffffff816f29b5 RDI: 0000000000000003
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff816f29a6 R11: 0000000000000000 R12: ffff888027905000
R13: 0000000000000c10 R14: ffffffff8d0cf10c R15: 0000000000000000
FS: 00007f3a020dd700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01d693000 CR3: 000000009f7d6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
0: 10 06 adc %al,(%rsi)
2: 00 40 84 add %al,-0x7c(%rax)
5: ed in (%dx),%eax
6: 5a pop %rdx
7: 0f 84 42 01 00 00 je 0x14f
d: e8 ab 08 06 00 callq 0x608bd
12: 4c 8d ab 10 0c 00 00 lea 0xc10(%rbx),%r13
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 4c 89 ea mov %r13,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 6f 04 00 00 jne 0x4a3
34: 48 8b ab 10 0c 00 00 mov 0xc10(%rbx),%rbp
3b: 31 ff xor %edi,%edi
3d: 49 89 ec mov %rbp,%r12