Oops: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]
CPU: 1 UID: 0 PID: 32717 Comm: modprobe Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:fib6_nh_get_excptn_bucket net/ipv6/route.c:1673 [inline]
RIP: 0010:rt6_find_cached_rt net/ipv6/route.c:1871 [inline]
RIP: 0010:ip6_pol_route+0x2e7/0x13d0 net/ipv6/route.c:2289
Code: e8 ce 2c 7d f7 85 db 4d 0f 44 f7 48 8d 5c 24 38 4c 8b 64 24 70 49 83 c4 60 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 e7 e8 0b 4f e6 f7 4d 8b 3c 24 e8 82 45 57
RSP: 0018:ffffc90000a07c80 EFLAGS: 00010206
RAX: 000000000000000c RBX: ffffc90000a07cb8 RCX: dffffc0000000000
RDX: ffff888020321e40 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a07d90 R08: ffff88802129ad33 R09: 1ffff110042535a6
R10: dffffc0000000000 R11: ffffed10042535a7 R12: 0000000000000060
R13: ffffc90000a08388 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881255b0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007facf3c0afe8 CR3: 0000000032b2a000 CR4: 00000000003526f0
Call Trace:
pol_lookup_func include/net/ip6_fib.h:617 [inline]
__fib6_rule_action net/ipv6/fib6_rules.c:237 [inline]
fib6_rule_action+0x265/0xc00 net/ipv6/fib6_rules.c:275
fib_rules_lookup+0x768/0xea0 net/core/fib_rules.c:339
fib6_rule_lookup+0x1a0/0x730 net/ipv6/fib6_rules.c:112
ip6_route_output_flags_noref net/ipv6/route.c:2697 [inline]
ip6_route_output_flags+0x364/0x5d0 net/ipv6/route.c:2709
ip6_route_output include/net/ip6_route.h:93 [inline]
ip6_dst_lookup_tail+0x1c3/0x15a0 net/ipv6/ip6_output.c:1128
ip6_dst_lookup_flow+0x47/0xe0 net/ipv6/ip6_output.c:1259
udp_tunnel6_dst_lookup+0x24d/0x470 net/ipv6/ip6_udp_tunnel.c:165
geneve6_xmit_skb drivers/net/geneve.c:1428 [inline]
geneve_xmit+0x13a6/0x3110 drivers/net/geneve.c:1515
__netdev_start_xmit include/linux/netdevice.h:5275 [inline]
netdev_start_xmit include/linux/netdevice.h:5284 [inline]
xmit_one net/core/dev.c:3864 [inline]
dev_hard_start_xmit+0x2cd/0x7f0 net/core/dev.c:3880
__dev_queue_xmit+0x168f/0x3850 net/core/dev.c:4829
NF_HOOK_COND include/linux/netfilter.h:307 [inline]
ip6_output+0x340/0x550 net/ipv6/ip6_output.c:246
NF_HOOK include/linux/netfilter.h:318 [inline]
ndisc_send_skb+0xbaa/0x14e0 net/ipv6/ndisc.c:512
addrconf_rs_timer+0x395/0x6d0 net/ipv6/addrconf.c:4042
call_timer_fn+0x192/0x5a0 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1799 [inline]
__run_timers kernel/time/timer.c:2373 [inline]
__run_timer_base+0x652/0x8b0 kernel/time/timer.c:2385
run_timer_base kernel/time/timer.c:2394 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2404
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_is_held_type+0x106/0x150 kernel/locking/lockdep.c:5945
Code: 18 00 00 b8 ff ff ff ff 65 0f c1 05 04 f0 78 07 83 f8 01 75 25 9c 58 a9 00 02 00 00 75 39 41 f7 c4 00 02 00 00 74 01 fb 89 d8 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 4b e1 02 00 cc 90 0f 0b 90 48 c7
RSP: 0018:ffffc9000b83f4b0 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8e15187b RDI: ffffffff8c276500
RBP: 00000000ffffffff R08: ffff888020321e40 R09: 0000000000000004
R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000246
R13: ffff888020321e40 R14: ffffffff8e75e100 R15: 0000000000000001
lock_is_held include/linux/lockdep.h:249 [inline]
__might_resched+0x37/0x4d0 kernel/sched/core.c:8846
down_read+0x23/0x2e0 kernel/locking/rwsem.c:1536
anon_vma_lock_read include/linux/rmap.h:137 [inline]
validate_mm+0x1e3/0x4c0 mm/vma.c:677
mmap_region+0x1399/0x1f40 mm/vma.c:2836
do_mmap+0xc39/0x10c0 mm/mmap.c:558
vm_mmap_pgoff+0x2c9/0x4f0 mm/util.c:581
ksys_mmap_pgoff+0x51e/0x760 mm/mmap.c:604
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7facf3edc242
Code: 08 00 04 00 00 eb e2 90 41 f7 c1 ff 0f 00 00 75 27 55 89 cd 53 48 89 fb 48 85 ff 74 33 41 89 ea 48 89 df b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5e 5b 5d c3 0f 1f 00 c7 05 46 40 01 00 16 00
RSP: 002b:00007ffe05075118 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007facf3bf8000 RCX: 00007facf3edc242
RDX: 0000000000000005 RSI: 0000000000002000 RDI: 00007facf3bf8000
RBP: 0000000000000812 R08: 0000000000000000 R09: 0000000000002000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffe05075168
R13: 00007facf3eb1050 R14: 00007ffe05075550 R15: 00000fffc0a0ea26
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:fib6_nh_get_excptn_bucket net/ipv6/route.c:1673 [inline]
RIP: 0010:rt6_find_cached_rt net/ipv6/route.c:1871 [inline]
RIP: 0010:ip6_pol_route+0x2e7/0x13d0 net/ipv6/route.c:2289
Code: e8 ce 2c 7d f7 85 db 4d 0f 44 f7 48 8d 5c 24 38 4c 8b 64 24 70 49 83 c4 60 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 e7 e8 0b 4f e6 f7 4d 8b 3c 24 e8 82 45 57
RSP: 0018:ffffc90000a07c80 EFLAGS: 00010206
RAX: 000000000000000c RBX: ffffc90000a07cb8 RCX: dffffc0000000000
RDX: ffff888020321e40 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a07d90 R08: ffff88802129ad33 R09: 1ffff110042535a6
R10: dffffc0000000000 R11: ffffed10042535a7 R12: 0000000000000060
R13: ffffc90000a08388 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881255b0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007facf3c0afe8 CR3: 0000000032b2a000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: e8 ce 2c 7d f7 call 0xf77d2cd3
5: 85 db test %ebx,%ebx
7: 4d 0f 44 f7 cmove %r15,%r14
b: 48 8d 5c 24 38 lea 0x38(%rsp),%rbx
10: 4c 8b 64 24 70 mov 0x70(%rsp),%r12
15: 49 83 c4 60 add $0x60,%r12
19: 4c 89 e0 mov %r12,%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: 4c 89 e7 mov %r12,%rdi
33: e8 0b 4f e6 f7 call 0xf7e64f43
38: 4d 8b 3c 24 mov (%r12),%r15
3c: e8 .byte 0xe8
3d: 82 (bad)
3e: 45 57 rex.RB push %r15