BUG: unable to handle page fault for address: ffffffff818c7c39
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD 580f067 P4D 580f067 PUD 5810063 PMD 18001e1
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1649 Comm: syz-executor.2 Not tainted 5.4.180-syzkaller-00006-gee52e8cb3015 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__hlist_del include/linux/list.h:773 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:824 [inline]
RIP: 0010:expire_timers+0x155/0x400 kernel/time/timer.c:1452
Code: 10 3b 00 4d 89 3e 4d 85 ff 74 2a e8 35 b0 0e 00 49 83 c7 08 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 bb 10 3b 00 <4d> 89 37 eb 0b 66 0f 1f 44 00 00 e8 0b b0 0e 00 4d 89 ef 42 80 7c
RSP: 0018:ffff8881f6e09d78 EFLAGS: 00010046
RAX: 1ffffffff0318f87 RBX: ffff8881db7cf1c0 RCX: ffff8881e83d1f80
RDX: 0000000080000102 RSI: ffff8881db7cf1c0 RDI: 0000000000000000
RBP: 1ffff1103b6f9e39 R08: ffffffff81518de1 R09: ffffed103edc92f7
R10: ffffed103edc92f7 R11: 1ffff1103edc92f6 R12: ffff8881db7cf1c8
R13: dffffc0000000000 R14: ffff8881f6e09e60 R15: ffffffff818c7c39
FS: 00007fc222aa5700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff818c7c39 CR3: 00000001e41c2000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__run_timers+0x5b0/0x6b0 kernel/time/timer.c:1787
run_timer_softirq+0x46/0x80 kernel/time/timer.c:1800
__do_softirq+0x23e/0x643 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x195/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:538 [inline]
smp_apic_timer_interrupt+0x113/0x440 arch/x86/kernel/apic/apic.c:1150
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:831
RIP: 0010:check_memory_region+0x6/0x2d0 mm/kasan/generic.c:190
Code: 0c 31 db 48 c7 c7 b4 e5 23 85 4c 89 fe 31 c0 e8 95 03 8f 02 eb d3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 53 01 48 85 f6 0f 84 dd 01 00 00 48 89 fd 48 c1 ed 2f 81 fd ff ff
RSP: 0018:ffff8881ceadf508 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffff11039d5be00 RBX: 0000000000000010 RCX: ffffffff812ec4e7
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffff8881ceadf688
RBP: ffff8881ceadf688 R08: 000000000000000d R09: ffff8881ceadf688
R10: ffffed1039d5bed3 R11: 1ffff11039d5bed1 R12: 1ffff11039d5bec7
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881ceadf670
memset+0x1f/0x40 mm/kasan/common.c:106
unwind_next_frame+0x1017/0x1e00 arch/x86/kernel/unwind_orc.c:529
arch_stack_walk+0x114/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xce/0x170 kernel/stacktrace.c:123
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
__kasan_kmalloc+0x131/0x1e0 mm/kasan/common.c:529
slab_post_alloc_hook mm/slab.h:584 [inline]
slab_alloc_node mm/slub.c:2829 [inline]
slab_alloc mm/slub.c:2837 [inline]
kmem_cache_alloc_trace+0xd8/0x240 mm/slub.c:2854
kmalloc include/linux/slab.h:556 [inline]
ip6addrlbl_alloc net/ipv6/addrlabel.c:189 [inline]
ip6addrlbl_add+0x129/0xad0 net/ipv6/addrlabel.c:253
ip6addrlbl_net_init+0xf6/0x2e0 net/ipv6/addrlabel.c:320
ops_init+0x278/0x350 net/core/net_namespace.c:137
setup_net+0x1bb/0x9e0 net/core/net_namespace.c:338
copy_net_ns+0x2d4/0x470 net/core/net_namespace.c:479
create_new_namespaces+0x440/0x5e0 kernel/nsproxy.c:103
copy_namespaces+0x169/0x1b0 kernel/nsproxy.c:161
copy_process+0x108f/0x3220 kernel/fork.c:2044
_do_fork+0x142/0x730 kernel/fork.c:2392
__do_sys_clone kernel/fork.c:2550 [inline]
__se_sys_clone kernel/fork.c:2531 [inline]
__x64_sys_clone+0x213/0x260 kernel/fork.c:2531
do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fc22392f0e9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc222aa5118 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fc223a41f60 RCX: 00007fc22392f0e9
RDX: 00000000200004c0 RSI: 0000000020000cd0 RDI: 00000000c0300080
RBP: 00007fc22398908d R08: 0000000020000d00 R09: 0000000020000d00
R10: 0000000020000940 R11: 0000000000000202 R12: 0000000000000000
R13: 00007fffc6291c0f R14: 00007fc222aa5300 R15: 0000000000022000
Modules linked in:
CR2: ffffffff818c7c39
---[ end trace b88c916d47d31e17 ]---
RIP: 0010:__hlist_del include/linux/list.h:773 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:824 [inline]
RIP: 0010:expire_timers+0x155/0x400 kernel/time/timer.c:1452
Code: 10 3b 00 4d 89 3e 4d 85 ff 74 2a e8 35 b0 0e 00 49 83 c7 08 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 bb 10 3b 00 <4d> 89 37 eb 0b 66 0f 1f 44 00 00 e8 0b b0 0e 00 4d 89 ef 42 80 7c
RSP: 0018:ffff8881f6e09d78 EFLAGS: 00010046
RAX: 1ffffffff0318f87 RBX: ffff8881db7cf1c0 RCX: ffff8881e83d1f80
RDX: 0000000080000102 RSI: ffff8881db7cf1c0 RDI: 0000000000000000
RBP: 1ffff1103b6f9e39 R08: ffffffff81518de1 R09: ffffed103edc92f7
R10: ffffed103edc92f7 R11: 1ffff1103edc92f6 R12: ffff8881db7cf1c8
R13: dffffc0000000000 R14: ffff8881f6e09e60 R15: ffffffff818c7c39
FS: 00007fc222aa5700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff818c7c39 CR3: 00000001e41c2000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 10 3b adc %bh,(%rbx)
2: 00 4d 89 add %cl,-0x77(%rbp)
5: 3e 4d 85 ff ds test %r15,%r15
9: 74 2a je 0x35
b: e8 35 b0 0e 00 callq 0xeb045
10: 49 83 c7 08 add $0x8,%r15
14: 4c 89 f8 mov %r15,%rax
17: 48 c1 e8 03 shr $0x3,%rax
1b: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
20: 74 08 je 0x2a
22: 4c 89 ff mov %r15,%rdi
25: e8 bb 10 3b 00 callq 0x3b10e5
* 2a: 4d 89 37 mov %r14,(%r15) <-- trapping instruction
2d: eb 0b jmp 0x3a
2f: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
35: e8 0b b0 0e 00 callq 0xeb045
3a: 4d 89 ef mov %r13,%r15
3d: 42 rex.X
3e: 80 .byte 0x80
3f: 7c .byte 0x7c