------------[ cut here ]------------
WARNING: CPU: 1 PID: 10642 at net/ipv4/route.c:1261 ip_rt_bug+0x2a/0x110 net/ipv4/route.c:1261
Modules linked in:
CPU: 1 PID: 10642 Comm: syz-executor.1 Not tainted 6.8.0-syzkaller-05221-gea80e3ed09ab #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:ip_rt_bug+0x2a/0x110 net/ipv4/route.c:1261
Code: f3 0f 1e fa 41 57 41 56 41 55 41 54 53 48 89 d3 e8 1b 27 c5 f7 66 90 e8 14 27 c5 f7 48 89 df be 02 00 00 00 e8 27 80 6e ff 90 <0f> 0b 90 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc f3 0f 1e
RSP: 0018:ffffc90000a08680 EFLAGS: 00010286
RAX: 9ad542d231827d00 RBX: ffff88804f62cdc0 RCX: ffffffff81720c2a
RDX: dffffc0000000000 RSI: ffffffff8baac220 RDI: ffffffff8bfec660
RBP: 0000000000000001 R08: ffffffff92cc7597 R09: 1ffffffff2598eb2
R10: dffffc0000000000 R11: fffffbfff2598eb3 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888038478000 R15: ffff888016b31380
FS: 0000555562354480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8622d02541 CR3: 0000000088604000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ip_local_out net/ipv4/ip_output.c:129 [inline]
ip_send_skb net/ipv4/ip_output.c:1493 [inline]
ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1513
__icmp_send+0xfb0/0x1500 net/ipv4/icmp.c:770
ipv4_send_dest_unreach net/ipv4/route.c:1241 [inline]
ipv4_link_failure+0x62f/0xa10 net/ipv4/route.c:1248
dst_link_failure include/net/dst.h:429 [inline]
arp_error_report+0x114/0x160 net/ipv4/arp.c:296
neigh_invalidate+0x244/0x470 net/core/neighbour.c:1059
neigh_timer_handler+0x8a5/0xfb0 net/core/neighbour.c:1146
call_timer_fn+0x17e/0x600 kernel/time/timer.c:1792
expire_timers kernel/time/timer.c:1843 [inline]
__run_timers kernel/time/timer.c:2408 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2419
run_timer_base kernel/time/timer.c:2428 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2438
__do_softirq+0x2bc/0x943 kernel/softirq.c:554
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633
irq_exit_rcu+0x9/0x30 kernel/softirq.c:645
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5283
Code: c9 50 e8 19 ae 0b 00 48 83 c4 08 4c 89 f7 e8 1d 38 00 00 0f 1f 44 00 00 4c 89 f7 e8 b0 bb 14 0a e8 ab 34 36 00 fb 48 8b 5d c0 <48> 8d bb f0 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc90004f56ca8 EFLAGS: 00000286
RAX: 9ad542d231827d00 RBX: ffff8880338e5a00 RCX: ffffffff944bf403
RDX: dffffc0000000000 RSI: ffffffff8baac220 RDI: ffffffff8bfec660
RBP: ffffc90004f56cf0 R08: ffffffff8f86ae2f R09: 1ffffffff1f0d5c5
R10: dffffc0000000000 R11: fffffbfff1f0d5c6 R12: 1ffff110172a7dd7
R13: dffffc0000000000 R14: ffff8880b953e140 R15: ffff8880b953eeb8
context_switch kernel/sched/core.c:5412 [inline]
__schedule+0x17db/0x4a20 kernel/sched/core.c:6736
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6915
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6939
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
unwind_next_frame+0x2124/0x2a00 arch/x86/kernel/unwind_orc.c:672
__unwind_start+0x641/0x7c0 arch/x86/kernel/unwind_orc.c:760
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x103/0x1b0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
kasan_kmalloc include/linux/kasan.h:211 [inline]
kmalloc_trace+0x1d9/0x360 mm/slub.c:4012
kmalloc include/linux/slab.h:590 [inline]
proc_self_get_link+0xe0/0x170 fs/proc/self.c:22
pick_link+0x691/0xd50 fs/namei.c:1805
step_into+0xca9/0x1080 fs/namei.c:1875
walk_component fs/namei.c:2011 [inline]
link_path_walk+0x748/0xea0 fs/namei.c:2332
path_openat+0x24a/0x3240 fs/namei.c:3796
do_filp_open+0x235/0x490 fs/namei.c:3827
do_sys_openat2+0x13e/0x1d0 fs/open.c:1407
do_sys_open fs/open.c:1422 [inline]
__do_sys_openat fs/open.c:1438 [inline]
__se_sys_openat fs/open.c:1433 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1433
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f8622c7c9a0
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 09 82 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 5c 82 02 00 8b 44
RSP: 002b:00007ffc92462ce0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000080001 RCX: 00007f8622c7c9a0
RDX: 0000000000080001 RSI: 00007f8622cca502 RDI: 00000000ffffff9c
RBP: 00007f8622cca502 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000004
R13: 00007ffc92462d80 R14: 0000000000000001 R15: 0000000000000001
----------------
Code disassembly (best guess):
0: c9 leave
1: 50 push %rax
2: e8 19 ae 0b 00 call 0xbae20
7: 48 83 c4 08 add $0x8,%rsp
b: 4c 89 f7 mov %r14,%rdi
e: e8 1d 38 00 00 call 0x3830
13: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
18: 4c 89 f7 mov %r14,%rdi
1b: e8 b0 bb 14 0a call 0xa14bbd0
20: e8 ab 34 36 00 call 0x3634d0
25: fb sti
26: 48 8b 5d c0 mov -0x40(%rbp),%rbx
* 2a: 48 8d bb f0 15 00 00 lea 0x15f0(%rbx),%rdi <-- trapping instruction
31: 48 89 f8 mov %rdi,%rax
34: 48 c1 e8 03 shr $0x3,%rax
38: 49 rex.WB
39: be 00 00 00 00 mov $0x0,%esi
3e: 00 fc add %bh,%ah