RSP: 002b:00007ffe0ad1a168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ffe0ad1a170 RCX: 00007f1b602562e9
RDX: 0000000000004000 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 00007ffe0ad19f07 R09: 00007f1b60210035
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe0ad1a3d8 R14: 0000000000000001 R15: 0000000000000001
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 357 Comm: syz-executor283 Not tainted 5.4.289-syzkaller-00025-g49530c73f82d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:nexthop_create_group net/ipv4/nexthop.c:1135 [inline]
RIP: 0010:nexthop_add net/ipv4/nexthop.c:1320 [inline]
RIP: 0010:rtm_new_nexthop+0x24d4/0x6ae0 net/ipv4/nexthop.c:1519
Code: 00 80 3c 01 00 74 0a 48 8b 7c 24 20 e8 85 72 d1 fd 48 8b 44 24 20 4c 89 30 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 5e 72 d1 fd 48 8b 44 24 20 49 89 06
RSP: 0018:ffff8881ee63f0a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881f5c02a00
RBP: ffff8881ee63f4b0 R08: ffffffff824713f8 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 1ffff1103dcc7e2c
R13: 0000000000010001 R14: 0000000000000000 R15: 1ffffffff0c7333c
FS: 000055556ee27480(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000045b630 CR3: 00000001d9480000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rtnetlink_rcv_msg+0x983/0xc70 net/core/rtnetlink.c:5290
netlink_rcv_skb+0x1d5/0x420 net/netlink/af_netlink.c:2467
netlink_unicast_kernel net/netlink/af_netlink.c:1306 [inline]
netlink_unicast+0x936/0xb20 net/netlink/af_netlink.c:1332
netlink_sendmsg+0xa18/0xcf0 net/netlink/af_netlink.c:1900
sock_sendmsg_nosec net/socket.c:638 [inline]
__sock_sendmsg net/socket.c:650 [inline]
____sys_sendmsg+0x5ac/0x8f0 net/socket.c:2306
___sys_sendmsg net/socket.c:2360 [inline]
__sys_sendmsg+0x28b/0x380 net/socket.c:2406
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f1b602562e9
Code: 48 83 c4 28 c3 e8 17 1a 00 00 0f 1f 80 00 00 00 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:00007ffe0ad1a168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ffe0ad1a170 RCX: 00007f1b602562e9
RDX: 0000000000004000 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 00007ffe0ad19f07 R09: 00007f1b60210035
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe0ad1a3d8 R14: 0000000000000001 R15: 0000000000000001
Modules linked in:
---[ end trace d208ca9dbd36a09c ]---
RIP: 0010:nexthop_create_group net/ipv4/nexthop.c:1135 [inline]
RIP: 0010:nexthop_add net/ipv4/nexthop.c:1320 [inline]
RIP: 0010:rtm_new_nexthop+0x24d4/0x6ae0 net/ipv4/nexthop.c:1519
Code: 00 80 3c 01 00 74 0a 48 8b 7c 24 20 e8 85 72 d1 fd 48 8b 44 24 20 4c 89 30 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 5e 72 d1 fd 48 8b 44 24 20 49 89 06
RSP: 0018:ffff8881ee63f0a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881f5c02a00
RBP: ffff8881ee63f4b0 R08: ffffffff824713f8 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 1ffff1103dcc7e2c
R13: 0000000000010001 R14: 0000000000000000 R15: 1ffffffff0c7333c
FS: 000055556ee27480(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000045b630 CR3: 00000001d9480000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 80 3c 01 00 74 add %al,0x7400013c(%rax)
6: 0a 48 8b or -0x75(%rax),%cl
9: 7c 24 jl 0x2f
b: 20 e8 and %ch,%al
d: 85 72 d1 test %esi,-0x2f(%rdx)
10: fd std
11: 48 8b 44 24 20 mov 0x20(%rsp),%rax
16: 4c 89 30 mov %r14,(%rax)
19: 4c 89 f0 mov %r14,%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 f7 mov %r14,%rdi
33: e8 5e 72 d1 fd call 0xfdd17296
38: 48 8b 44 24 20 mov 0x20(%rsp),%rax
3d: 49 89 06 mov %rax,(%r14)