Oops: general protection fault, probably for non-canonical address 0xdffffc00000000bc: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x00000000000005e0-0x00000000000005e7]
CPU: 0 PID: 10346 Comm: syz-executor.1 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:fib6_nh_init+0x640/0x2160 net/ipv6/route.c:3606
Code: 00 00 fc ff df 4c 8b 64 24 58 48 8b 44 24 28 4c 8b 74 24 30 48 89 c1 48 89 44 24 28 48 8d 98 e0 05 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 b3 17 00 00 8b 1b 31 ff 89 de e8 48 79
RSP: 0018:ffffc900033ff5a0 EFLAGS: 00010212
RAX: 00000000000000bc RBX: 00000000000005e0 RCX: 0000000000000000
RDX: 0000000000000010 RSI: ffffc900033ffa64 RDI: ffff888020f2a8e8
RBP: ffffc900033ff8b0 R08: ffff888020f2a8e7 R09: 1ffff110041e551c
R10: dffffc0000000000 R11: ffffed10041e551d R12: ffff888020f2a8b8
R13: 1ffff9200067fec8 R14: ffffc900033ffa00 R15: dffffc0000000000
FS: 00007f76671816c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32d22000 CR3: 000000007f71e000 CR4: 0000000000350ef0
Call Trace:
<TASK>
ip6_route_info_create+0x99e/0x12b0 net/ipv6/route.c:3809
ip6_route_add+0x28/0x160 net/ipv6/route.c:3853
ipv6_route_ioctl+0x588/0x870 net/ipv6/route.c:4483
inet6_ioctl+0x21a/0x280 net/ipv6/af_inet6.c:579
sock_do_ioctl+0x15a/0x460 net/socket.c:1222
sock_ioctl+0x629/0x8e0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfe/0x170 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f766647cf29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f76671810c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f76665b3f80 RCX: 00007f766647cf29
RDX: 0000000020000140 RSI: 000000000000890b RDI: 0000000000000009
RBP: 00007f76664ec074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f76665b3f80 R15: 00007ffd60b57948
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:fib6_nh_init+0x640/0x2160 net/ipv6/route.c:3606
Code: 00 00 fc ff df 4c 8b 64 24 58 48 8b 44 24 28 4c 8b 74 24 30 48 89 c1 48 89 44 24 28 48 8d 98 e0 05 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 b3 17 00 00 8b 1b 31 ff 89 de e8 48 79
RSP: 0018:ffffc900033ff5a0 EFLAGS: 00010212
RAX: 00000000000000bc RBX: 00000000000005e0 RCX: 0000000000000000
RDX: 0000000000000010 RSI: ffffc900033ffa64 RDI: ffff888020f2a8e8
RBP: ffffc900033ff8b0 R08: ffff888020f2a8e7 R09: 1ffff110041e551c
R10: dffffc0000000000 R11: ffffed10041e551d R12: ffff888020f2a8b8
R13: 1ffff9200067fec8 R14: ffffc900033ffa00 R15: dffffc0000000000
FS: 00007f76671816c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f75538e6290 CR3: 000000007f71e000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 4 bytes skipped:
0: df 4c 8b 64 fisttps 0x64(%rbx,%rcx,4)
4: 24 58 and $0x58,%al
6: 48 8b 44 24 28 mov 0x28(%rsp),%rax
b: 4c 8b 74 24 30 mov 0x30(%rsp),%r14
10: 48 89 c1 mov %rax,%rcx
13: 48 89 44 24 28 mov %rax,0x28(%rsp)
18: 48 8d 98 e0 05 00 00 lea 0x5e0(%rax),%rbx
1f: 48 89 d8 mov %rbx,%rax
22: 48 c1 e8 03 shr $0x3,%rax
* 26: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction
2b: 84 c0 test %al,%al
2d: 0f 85 b3 17 00 00 jne 0x17e6
33: 8b 1b mov (%rbx),%ebx
35: 31 ff xor %edi,%edi
37: 89 de mov %ebx,%esi
39: e8 .byte 0xe8
3a: 48 rex.W
3b: 79 .byte 0x79