general protection fault, probably for non-canonical address 0xdffffc000000005e: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000002f0-0x00000000000002f7]
CPU: 0 PID: 32515 Comm: syz.0.13357 Tainted: G W 5.15.180-syzkaller-00024-g88c4075c39ed #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:__in6_dev_get include/net/addrconf.h:341 [inline]
RIP: 0010:ip6_ignore_linkdown include/net/addrconf.h:432 [inline]
RIP: 0010:find_match+0xb7/0xf20 net/ipv6/route.c:741
Code: 7c 05 00 00 74 08 48 89 df e8 e5 d4 87 fd 48 89 d8 bb f0 02 00 00 48 03 18 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 bb d4 87 fd 48 8b 1b 48 85 db 0f 84
RSP: 0018:ffffc90000006fa0 EFLAGS: 00010202
RAX: 000000000000005e RBX: 00000000000002f0 RCX: dffffc0000000000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007058 R08: ffffc90000007380 R09: ffffc90000007390
R10: fffff52000000e92 R11: 1ffff92000000e8e R12: 0000000000000201
R13: 1ffff110246200c4 R14: 0000000000000000 R15: 0000000000000003
FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d613ff8 CR3: 000000000660f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000097 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rt6_nh_find_match+0xd9/0x140 net/ipv6/route.c:781
nexthop_for_each_fib6_nh+0xf6/0x1e0 net/ipv4/nexthop.c:1242
__find_rr_leaf+0x50f/0x900 net/ipv6/route.c:822
find_rr_leaf net/ipv6/route.c:859 [inline]
rt6_select net/ipv6/route.c:894 [inline]
fib6_table_lookup+0x631/0x9f0 net/ipv6/route.c:2189
ip6_pol_route+0x145/0x1110 net/ipv6/route.c:2225
ip6_pol_route_output+0x51/0x80 net/ipv6/route.c:2601
pol_lookup_func include/net/ip6_fib.h:592 [inline]
fib6_rule_lookup+0x2ef/0x560 net/ipv6/fib6_rules.c:120
ip6_route_output_flags_noref+0x283/0x340 net/ipv6/route.c:2633
ip6_route_output_flags+0x3c/0x200 net/ipv6/route.c:2646
ip6_dst_lookup_tail+0x591/0x1370 net/ipv6/ip6_output.c:1129
ip6_dst_lookup_flow+0x49/0xc0 net/ipv6/ip6_output.c:1232
tipc_udp_xmit+0x306/0x8d0 net/tipc/udp_media.c:210
tipc_udp_send_msg+0x20c/0x2e0 net/tipc/udp_media.c:271
tipc_bearer_xmit_skb+0x27d/0x360 net/tipc/bearer.c:564
tipc_disc_timeout+0x6a2/0x830 net/tipc/discover.c:338
call_timer_fn+0x38/0x290 kernel/time/timer.c:1457
expire_timers kernel/time/timer.c:1502 [inline]
__run_timers+0x639/0x9a0 kernel/time/timer.c:1773
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1786
handle_softirqs+0x250/0x560 kernel/softirq.c:565
__do_softirq kernel/softirq.c:603 [inline]
invoke_softirq kernel/softirq.c:425 [inline]
__irq_exit_rcu+0x52/0xf0 kernel/softirq.c:652
irq_exit_rcu+0x9/0x10 kernel/softirq.c:664
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:_compound_head include/linux/page-flags.h:205 [inline]
RIP: 0010:PageAnon include/linux/page-flags.h:510 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1439 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1574 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1603 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1624 [inline]
RIP: 0010:unmap_page_range+0xd6f/0x1ce0 mm/memory.c:1645
Code: 07 00 00 49 8d 5f 08 49 89 dc 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df 41 80 3c 04 00 74 08 48 89 df e8 24 95 0a 00 4c 8b 2b <44> 89 ee 83 e6 01 31 ff e8 64 2b cc ff 41 f6 c5 01 0f 85 2e 07 00
RSP: 0018:ffffc9000126f560 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffea0004345f08 RCX: ffff88810b9462c0
RDX: ffffc9000126f8c0 RSI: 0000000000000001 RDI: ffffc9000126f8b8
RBP: ffffc9000126f730 R08: dffffc0000000000 R09: ffffed1021728c59
R10: ffffed1021728c59 R11: 1ffff11021728c58 R12: 1ffffd4000868be1
R13: 0000000000000000 R14: ffff888138678e88 R15: ffffea0004345f00
unmap_single_vma mm/memory.c:1690 [inline]
unmap_vmas+0x258/0x360 mm/memory.c:1722
exit_mmap+0x3e6/0x860 mm/mmap.c:3233
__mmput+0x93/0x320 kernel/fork.c:1180
mmput+0x50/0x150 kernel/fork.c:1203
exit_mm kernel/exit.c:554 [inline]
do_exit+0x9ca/0x27a0 kernel/exit.c:867
do_group_exit+0x141/0x310 kernel/exit.c:1002
get_signal+0x66a/0x1480 kernel/signal.c:2907
arch_do_signal_or_restart+0xc1/0x10f0 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:154 [inline]
exit_to_user_mode_loop+0xa7/0xe0 kernel/entry/common.c:178
exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f833660c969
Code: Unable to access opcode bytes at RIP 0x7f833660c93f.
RSP: 002b:00007f8334c750e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f8336833fa8 RCX: 00007f833660c969
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f8336833fac
RBP: 00007f8336833fa0 R08: 003a7d81b21f7725 R09: 0000000000000000
R10: 0000000000000040 R11: 0000000000000246 R12: 00007f8336833fac
R13: 0000000000000000 R14: 00007ffd3520a300 R15: 00007ffd3520a3e8
Modules linked in:
---[ end trace e82dcbc6bbdd91d7 ]---
RIP: 0010:__in6_dev_get include/net/addrconf.h:341 [inline]
RIP: 0010:ip6_ignore_linkdown include/net/addrconf.h:432 [inline]
RIP: 0010:find_match+0xb7/0xf20 net/ipv6/route.c:741
Code: 7c 05 00 00 74 08 48 89 df e8 e5 d4 87 fd 48 89 d8 bb f0 02 00 00 48 03 18 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 bb d4 87 fd 48 8b 1b 48 85 db 0f 84
RSP: 0018:ffffc90000006fa0 EFLAGS: 00010202
RAX: 000000000000005e RBX: 00000000000002f0 RCX: dffffc0000000000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007058 R08: ffffc90000007380 R09: ffffc90000007390
R10: fffff52000000e92 R11: 1ffff92000000e8e R12: 0000000000000201
R13: 1ffff110246200c4 R14: 0000000000000000 R15: 0000000000000003
FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d613ff8 CR3: 000000000660f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000097 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 7c 05 jl 0x7
2: 00 00 add %al,(%rax)
4: 74 08 je 0xe
6: 48 89 df mov %rbx,%rdi
9: e8 e5 d4 87 fd call 0xfd87d4f3
e: 48 89 d8 mov %rbx,%rax
11: bb f0 02 00 00 mov $0x2f0,%ebx
16: 48 03 18 add (%rax),%rbx
19: 48 89 d8 mov %rbx,%rax
1c: 48 c1 e8 03 shr $0x3,%rax
20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
27: fc ff df
* 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 48 89 df mov %rbx,%rdi
33: e8 bb d4 87 fd call 0xfd87d4f3
38: 48 8b 1b mov (%rbx),%rbx
3b: 48 85 db test %rbx,%rbx
3e: 0f .byte 0xf
3f: 84 .byte 0x84