------------[ cut here ]------------
WARNING: CPU: 1 PID: 7607 at net/ipv4/route.c:1260 kfree_skb include/linux/skbuff.h:1118 [inline]
WARNING: CPU: 1 PID: 7607 at net/ipv4/route.c:1260 ip_rt_bug+0x22/0xf0 net/ipv4/route.c:1259
Modules linked in:
CPU: 1 PID: 7607 Comm: syz.5.670 Not tainted 5.15.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:ip_rt_bug+0x22/0xf0 net/ipv4/route.c:1260
Code: e9 41 ff ff ff 0f 1f 00 41 57 41 56 41 55 41 54 53 48 89 d3 e8 8f a1 a6 f8 66 90 e8 88 a1 a6 f8 48 89 df 31 f6 e8 3e 62 75 ff <0f> 0b 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 49 bd 00 00 00 00 00 fc
RSP: 0018:ffffc90000dd0678 EFLAGS: 00010282
RAX: da549bca8dba5e00 RBX: ffff888078a87780 RCX: ffffffff8b9e0d40
RDX: dffffc0000000000 RSI: ffffffff8af9f2a0 RDI: ffffffff8af9f260
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffffbfff2131835
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888078a87780
R13: ffff888078a877d8 R14: ffff88802b984f80 R15: ffff88802b04ba80
FS: 00007f3c22f856c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc415715700 CR3: 00000000694d7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
dst_output include/net/dst.h:443 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
ip_send_skb+0x113/0x1a0 net/ipv4/ip_output.c:1581
__icmp_send+0xef9/0x1480 net/ipv4/icmp.c:777
ipv4_send_dest_unreach net/ipv4/route.c:1240 [inline]
ipv4_link_failure+0x5e4/0x9c0 net/ipv4/route.c:1247
dst_link_failure include/net/dst.h:422 [inline]
arp_error_report+0x112/0x160 net/ipv4/arp.c:295
neigh_invalidate+0x240/0x460 net/core/neighbour.c:1001
neigh_timer_handler+0x8a1/0xf90 net/core/neighbour.c:1088
call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1767
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
__do_softirq kernel/softirq.c:592 [inline]
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:console_unlock+0xe53/0x12b0 kernel/printk/printk.c:2749
Code: 00 48 83 7c 24 18 00 75 19 e8 c9 07 1a 00 eb 18 e8 c2 07 1a 00 e8 8d c1 d8 08 48 83 7c 24 18 00 74 e7 e8 b0 07 1a 00 fb 31 ff <44> 89 f6 e8 05 0b 1a 00 31 db 45 85 f6 0f 95 c0 89 c1 0a 4c 24 17
RSP: 0018:ffffc90003aff080 EFLAGS: 00000246
RAX: ffffffff81667de0 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90003d21000 RSI: 00000000000144f6 RDI: 0000000000000000
RBP: ffffc90003aff310 R08: ffffffff81667dab R09: fffffbfff2131821
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1a8e502
R13: ffffffff8d472848 R14: 0000000000000000 R15: dffffc0000000000
vprintk_emit+0xbf/0x150 kernel/printk/printk.c:2274
_printk+0xd1/0x120 kernel/printk/printk.c:2299
reiserfs_info+0x10f/0x150 fs/reiserfs/prints.c:303
journal_read+0x212/0x3e00 fs/reiserfs/journal.c:2385
journal_init+0x195c/0x2380 fs/reiserfs/journal.c:2895
reiserfs_fill_super+0xe21/0x2690 fs/reiserfs/super.c:2026
mount_bdev+0x2c9/0x3f0 fs/super.c:1400
legacy_get_tree+0xeb/0x180 fs/fs_context.c:611
vfs_get_tree+0x88/0x270 fs/super.c:1530
do_new_mount+0x2ba/0xb40 fs/namespace.c:3012
do_mount fs/namespace.c:3355 [inline]
__do_sys_mount fs/namespace.c:3563 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3540
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f3c2511d4ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f3c22f84e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f3c22f84ef0 RCX: 00007f3c2511d4ca
RDX: 0000000020000140 RSI: 0000000020001140 RDI: 00007f3c22f84eb0
RBP: 0000000020000140 R08: 00007f3c22f84ef0 R09: 0000000000000098
R10: 0000000000000098 R11: 0000000000000246 R12: 0000000020001140
R13: 00007f3c22f84eb0 R14: 00000000000010ef R15: 0000000020000280
</TASK>
----------------
Code disassembly (best guess):
0: 00 48 83 add %cl,-0x7d(%rax)
3: 7c 24 jl 0x29
5: 18 00 sbb %al,(%rax)
7: 75 19 jne 0x22
9: e8 c9 07 1a 00 call 0x1a07d7
e: eb 18 jmp 0x28
10: e8 c2 07 1a 00 call 0x1a07d7
15: e8 8d c1 d8 08 call 0x8d8c1a7
1a: 48 83 7c 24 18 00 cmpq $0x0,0x18(%rsp)
20: 74 e7 je 0x9
22: e8 b0 07 1a 00 call 0x1a07d7
27: fb sti
28: 31 ff xor %edi,%edi
* 2a: 44 89 f6 mov %r14d,%esi <-- trapping instruction
2d: e8 05 0b 1a 00 call 0x1a0b37
32: 31 db xor %ebx,%ebx
34: 45 85 f6 test %r14d,%r14d
37: 0f 95 c0 setne %al
3a: 89 c1 mov %eax,%ecx
3c: 0a 4c 24 17 or 0x17(%rsp),%cl