------------[ cut here ]------------
WARNING: CPU: 1 PID: 7849 at net/ipv4/route.c:1241 ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1241
Modules linked in:
CPU: 1 UID: 0 PID: 7849 Comm: syz-executor Not tainted 6.11.0-rc3-syzkaller-00497-g797653865b98 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1241
Code: 1e fa 41 57 41 56 41 55 41 54 53 48 89 d3 e8 8b d6 81 f7 66 90 e8 84 d6 81 f7 31 ff 48 89 de ba 02 00 00 00 e8 15 84 6b 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:ffffc90000a18680 EFLAGS: 00010286
RAX: 7a5cc238512d2c00 RBX: ffff888052164500 RCX: ffffffff817040ca
RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c606900
RBP: 0000000000000001 R08: ffffffff937328df R09: 1ffffffff26e651b
R10: dffffc0000000000 R11: fffffbfff26e651c R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8880546d1dc0 R15: ffff888016bfa080
FS: 0000555558a9c500(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f74d1eddd58 CR3: 000000004f096000 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:1495 [inline]
ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1515
__icmp_send+0xf89/0x14e0 net/ipv4/icmp.c:777
ipv4_send_dest_unreach net/ipv4/route.c:1221 [inline]
ipv4_link_failure+0x62f/0xa10 net/ipv4/route.c:1228
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:1061
neigh_timer_handler+0x8a5/0xfd0 net/core/neighbour.c:1148
call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792
expire_timers kernel/time/timer.c:1843 [inline]
__run_timers kernel/time/timer.c:2417 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428
run_timer_base kernel/time/timer.c:2437 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
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:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0x10/0xb0 kernel/rcu/tree.c:726
Code: 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 65 ff 05 c8 13 8a 7e 1b 34 3d 0a 89 c3 83 f8 08 73 7a 49 bf 00 00 00 00 00 fc ff df
RSP: 0018:ffffc900031071b8 EFLAGS: 00000286
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff888058e1da00
RDX: 0000000000000000 RSI: 00000000012169c0 RDI: 000000ffffffffc0
RBP: 0000000000000120 R08: ffffffff8206029e R09: 1ffffffff26e6508
R10: dffffc0000000000 R11: fffffbfff26e6509 R12: 00000000000485a7
R13: 0000000000000001 R14: ffffffff820601d0 R15: ffff888016980000
rcu_read_lock_held_common kernel/rcu/update.c:109 [inline]
rcu_read_lock_held+0x15/0x50 kernel/rcu/update.c:349
lookup_page_ext mm/page_ext.c:255 [inline]
page_ext_get+0x192/0x2a0 mm/page_ext.c:536
page_table_check_set+0x52/0x550 mm/page_table_check.c:114
__page_table_check_ptes_set+0x30f/0x410 mm/page_table_check.c:225
page_table_check_ptes_set include/linux/page_table_check.h:74 [inline]
set_ptes include/linux/pgtable.h:267 [inline]
__copy_present_ptes mm/memory.c:967 [inline]
copy_present_ptes mm/memory.c:1050 [inline]
copy_pte_range mm/memory.c:1165 [inline]
copy_pmd_range+0x475a/0x8500 mm/memory.c:1252
copy_pud_range mm/memory.c:1289 [inline]
copy_p4d_range mm/memory.c:1313 [inline]
copy_page_range+0x99f/0xe90 mm/memory.c:1411
dup_mmap kernel/fork.c:749 [inline]
dup_mm kernel/fork.c:1672 [inline]
copy_mm+0x11ea/0x1f30 kernel/fork.c:1721
copy_process+0x187c/0x3e10 kernel/fork.c:2387
kernel_clone+0x226/0x8f0 kernel/fork.c:2800
__do_sys_clone kernel/fork.c:2943 [inline]
__se_sys_clone kernel/fork.c:2927 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:2927
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: 0033:0x7f9c011706d3
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007fffd43b95d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9c011706d3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000555558a9c7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000005062f R14: 0000000000050543 R15: 00007fffd43b9760
----------------
Code disassembly (best guess):
0: 84 00 test %al,(%rax)
2: 00 00 add %al,(%rax)
4: 00 00 add %al,(%rax)
6: 0f 1f 40 00 nopl 0x0(%rax)
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 90 nop
19: 90 nop
1a: f3 0f 1e fa endbr64
1e: 41 57 push %r15
20: 41 56 push %r14
22: 53 push %rbx
23: 65 ff 05 c8 13 8a 7e incl %gs:0x7e8a13c8(%rip) # 0x7e8a13f2
* 2a: e8 1b 34 3d 0a call 0xa3d344a <-- trapping instruction
2f: 89 c3 mov %eax,%ebx
31: 83 f8 08 cmp $0x8,%eax
34: 73 7a jae 0xb0
36: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15
3d: fc ff df