Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 24990 Comm: syz.5.6108 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ip6_create_rt_rcu+0x92/0x4c0 net/ipv6/route.c:1227
Code: 08 4a 89 04 21 e8 ce ae b5 f7 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 18 0e 1c f8 49 8b 1e 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 ff 0d 1c f8 48 8b 1b 4c 89 74 24
RSP: 0018:ffffc9000435f220 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc900045d1000 RSI: 000000000000009b RDI: 000000000000009c
RBP: ffffc9000435f2d0 R08: ffffc9000435f24f R09: 0000000000000000
R10: ffffc9000435f240 R11: fffff5200086be4a R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffc9000435f3e0 R15: ffff8880557d8000
FS: 00007f8ba4df66c0(0000) GS:ffff888125f35000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c35a5ba CR3: 000000007b788000 CR4: 00000000003526f0
DR0: 0000000000000080 DR1: 0000000000000003 DR2: 0000000000000008
DR3: 0000000080000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
ip6_pol_route_lookup+0xb0b/0xcd0 net/ipv6/route.c:1293
pol_lookup_func include/net/ip6_fib.h:617 [inline]
fib6_rule_lookup+0x62a/0x6f0 net/ipv6/fib6_rules.c:125
rt6_lookup+0x119/0x1d0 net/ipv6/route.c:1327
ip6_mc_find_dev+0xf4/0x300 net/ipv6/mcast.c:181
__ipv6_sock_mc_join+0x47c/0x770 net/ipv6/mcast.c:223
do_ipv6_mcast_group_source+0x306/0x3e0 net/ipv6/ipv6_sockglue.c:173
do_ipv6_setsockopt+0x15f9/0x2eb0 net/ipv6/ipv6_sockglue.c:919
ipv6_setsockopt+0x59/0x170 net/ipv6/ipv6_sockglue.c:973
do_sock_setsockopt+0x17c/0x1b0 net/socket.c:2337
__sys_setsockopt net/socket.c:2362 [inline]
__do_sys_setsockopt net/socket.c:2368 [inline]
__se_sys_setsockopt net/socket.c:2365 [inline]
__x64_sys_setsockopt+0x13f/0x1b0 net/socket.c:2365
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8ba6b8f749
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8ba4df6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f8ba6de5fa0 RCX: 00007f8ba6b8f749
RDX: 000000000000002e RSI: 0000000000000029 RDI: 0000000000000006
RBP: 00007f8ba6c13f91 R08: 0000000000000108 R09: 0000000000000000
R10: 0000200000000200 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8ba6de6038 R14: 00007f8ba6de5fa0 R15: 00007ffc5306f7b8
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ip6_create_rt_rcu+0x92/0x4c0 net/ipv6/route.c:1227
Code: 08 4a 89 04 21 e8 ce ae b5 f7 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 18 0e 1c f8 49 8b 1e 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 ff 0d 1c f8 48 8b 1b 4c 89 74 24
RSP: 0018:ffffc9000435f220 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc900045d1000 RSI: 000000000000009b RDI: 000000000000009c
RBP: ffffc9000435f2d0 R08: ffffc9000435f24f R09: 0000000000000000
R10: ffffc9000435f240 R11: fffff5200086be4a R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffc9000435f3e0 R15: ffff8880557d8000
FS: 00007f8ba4df66c0(0000) GS:ffff888125e35000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9a209a8d58 CR3: 000000007b788000 CR4: 00000000003526f0
DR0: 0000000000000080 DR1: 0000000000000003 DR2: 0000000000000008
DR3: 0000000080000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 08 4a 89 or %cl,-0x77(%rdx)
3: 04 21 add $0x21,%al
5: e8 ce ae b5 f7 call 0xf7b5aed8
a: 4c 89 f0 mov %r14,%rax
d: 48 c1 e8 03 shr $0x3,%rax
11: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
16: 74 08 je 0x20
18: 4c 89 f7 mov %r14,%rdi
1b: e8 18 0e 1c f8 call 0xf81c0e38
20: 49 8b 1e mov (%r14),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 ff 0d 1c f8 call 0xf81c0e38
39: 48 8b 1b mov (%rbx),%rbx
3c: 4c rex.WR
3d: 89 .byte 0x89
3e: 74 24 je 0x64