syzbot


WARNING in ip_rt_bug (2)

Status: upstream: reported C repro on 2022/10/12 18:26
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+e738404dcd14b620923c@syzkaller.appspotmail.com
First crash: 1544d, last: 4d23h
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config
  
Fix bisection: failed (error log, bisect log)
  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] WARNING in ip_rt_bug (2) 0 (1) 2022/10/12 18:26
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING in ip_rt_bug C error 2 991d 1539d 0/1 upstream: reported C repro on 2020/04/03 11:53
linux-4.14 WARNING in ip_rt_bug C inconclusive 1 1467d 1527d 0/1 upstream: reported C repro on 2020/04/15 03:43
linux-6.1 WARNING in ip_rt_bug (2) 1 77d 77d 0/3 upstream: reported on 2024/04/04 04:22
linux-6.1 WARNING in ip_rt_bug 1 308d 308d 0/3 auto-obsoleted due to no activity on 2023/11/25 06:32
upstream WARNING in ip_rt_bug net 1 2272d 2264d 0/27 auto-closed as invalid on 2019/02/22 10:34
Last patch testing requests (10)
Created Duration User Patch Repo Result
2024/03/10 23:38 16m retest repro net-next report log
2024/02/20 13:04 26m retest repro linux-next error OK
2024/02/06 02:57 18m retest repro net report log
2024/01/22 15:51 17m retest repro upstream report log
2024/01/08 15:15 25m retest repro upstream report log
2024/01/08 14:38 51m retest repro upstream report log
2023/12/24 05:50 14m retest repro net-next report log
2023/12/01 05:36 14m retest repro linux-next report log
2023/11/17 00:15 15m retest repro net report log
2023/11/01 19:27 13m retest repro upstream report log
Fix bisection attempts (4)
Created Duration User Patch Repo Result
2020/12/07 15:25 8m bisect fix upstream error job log (0)
2020/11/07 07:20 16m bisect fix upstream job log (0) log
2020/10/08 05:21 18m bisect fix upstream job log (0) log
2020/07/29 09:01 17m bisect fix upstream job log (0) log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 0 at net/ipv4/route.c:1241 ip_rt_bug+0x2a/0x110 net/ipv4/route.c:1241
Modules linked in:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.10.0-rc2-syzkaller-00064-g71d7b52cc33b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:ip_rt_bug+0x2a/0x110 net/ipv4/route.c:1241
Code: f3 0f 1e fa 41 57 41 56 41 55 41 54 53 48 89 d3 e8 eb 55 b3 f7 66 90 e8 e4 55 b3 f7 48 89 df be 02 00 00 00 e8 c7 bf 6d 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: 1619a1df1b6f3600 RBX: ffff888023d2fa00 RCX: ffffffff8172d78a
RDX: dffffc0000000000 RSI: ffffffff8bcabb80 RDI: ffffffff8c1ff340
RBP: 0000000000000001 R08: ffffffff92fa8617 R09: 1ffffffff25f50c2
R10: dffffc0000000000 R11: fffffbfff25f50c3 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888023728000 R15: ffff888017b29380
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f07b979c090 CR3: 0000000017f64000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ip_local_out net/ipv4/ip_output.c:129 [inline]
 ip_send_skb net/ipv4/ip_output.c:1492 [inline]
 ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1512
 __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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d5 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d 25 f5 a2 00 f3 0f 1e fa fb f4 <fa> c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffc900001a7d08 EFLAGS: 00000246
RAX: ffff888017ae8000 RBX: ffff88801c2b4864 RCX: 00000000000222a1
RDX: 0000000000000001 RSI: ffff88801c2b4800 RDI: ffff88801c2b4864
RBP: 000000000003a5b8 R08: ffff8880b9537d0b R09: 1ffff110172a6fa1
R10: dffffc0000000000 R11: ffffffff8b8689f0 R12: ffff88801d320800
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8eace160
 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
 cpuidle_enter_state+0x112/0x480 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
 call_cpuidle kernel/sched/idle.c:155 [inline]
 cpuidle_idle_call kernel/sched/idle.c:236 [inline]
 do_idle+0x375/0x5d0 kernel/sched/idle.c:332
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:430
 start_secondary+0x100/0x100 arch/x86/kernel/smpboot.c:313
 common_startup_64+0x13e/0x147
 </TASK>
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	65 48 8b 04 25 00 d5 	mov    %gs:0x3d500,%rax
  10:	03 00
  12:	48 f7 00 08 00 00 00 	testq  $0x8,(%rax)
  19:	75 10                	jne    0x2b
  1b:	66 90                	xchg   %ax,%ax
  1d:	0f 00 2d 25 f5 a2 00 	verw   0xa2f525(%rip)        # 0xa2f549
  24:	f3 0f 1e fa          	endbr64
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	fa                   	cli <-- trapping instruction
  2b:	c3                   	ret
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  37:	00 00
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Crashes (142):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/06 09:16 upstream 71d7b52cc33b 121701b6 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ip_rt_bug
2022/02/07 06:48 upstream d8ad2ce873ab a7dab638 .config console log report syz C ci-qemu-upstream WARNING in ip_rt_bug
2020/04/22 10:22 upstream 189522da8b3a 2e44d63e .config console log report syz C ci-upstream-kasan-gce-root
2020/03/29 12:33 net-old a0ba26f37ea0 05736b29 .config console log report syz C ci-upstream-net-this-kasan-gce
2020/03/29 12:39 net-next-old 1a147b74c2fd 05736b29 .config console log report syz C ci-upstream-net-kasan-gce
2020/04/24 19:57 linux-next ac935d227366 03d97a1b .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2024/06/12 04:20 upstream 2ef5971ff345 4d75f4f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ip_rt_bug
2024/06/11 17:57 upstream 83a7eefedc9b c7d7d815 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in ip_rt_bug
2024/06/11 11:15 upstream 83a7eefedc9b c7d7d815 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in ip_rt_bug
2024/06/10 19:17 upstream 83a7eefedc9b 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ip_rt_bug
2024/06/08 15:36 upstream dc772f8237f9 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in ip_rt_bug
2024/06/06 05:29 upstream 71d7b52cc33b 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ip_rt_bug
2024/06/04 11:35 upstream f06ce441457d a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in ip_rt_bug
2024/06/04 10:34 upstream f06ce441457d a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ip_rt_bug
2024/05/23 21:13 upstream 8f6a15f095a6 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ip_rt_bug
2024/04/26 01:17 upstream e33c4963bf53 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ip_rt_bug
2024/04/11 00:05 upstream 480e035fc4c7 56086b24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ip_rt_bug
2024/04/09 04:48 upstream 480e035fc4c7 53df08b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ip_rt_bug
2024/04/06 20:08 upstream 480e035fc4c7 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ip_rt_bug
2024/04/04 20:24 upstream 480e035fc4c7 0ee3535e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ip_rt_bug
2024/04/04 18:35 upstream 480e035fc4c7 0ee3535e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ip_rt_bug
2024/04/03 10:15 upstream 480e035fc4c7 7925100d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in ip_rt_bug
2024/03/30 07:30 upstream fe46a7dd189e c52bcb23 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in ip_rt_bug
2024/04/08 01:22 upstream fe46a7dd189e ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in ip_rt_bug
2024/06/13 00:21 upstream cea2a26553ac c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in ip_rt_bug
2024/04/30 06:53 net ba1cb99b559e 27e33c58 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in ip_rt_bug
2024/04/27 12:48 net 6a30653b604a 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in ip_rt_bug
2024/06/16 03:22 net-next 3ec8d7572a69 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/06/07 17:42 net-next a99997323654 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/27 05:09 net-next 66ad4829ddd0 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/26 06:57 net-next 66ad4829ddd0 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/23 05:26 net-next 4b377b4868ef 4d098039 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/22 14:31 net-next 4b377b4868ef 4d098039 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/19 17:07 net-next 4b377b4868ef c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/16 19:54 net-next 1b294a1f3561 ef5d53ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/16 13:33 net-next 1b294a1f3561 ef5d53ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/16 07:18 net-next 1b294a1f3561 ef5d53ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/15 08:21 net-next 654de42f3fc6 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/14 15:37 net-next 5c1672705a1a fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/14 07:03 net-next c85e41bfe7af fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/12 21:07 net-next cddd2dc6390b 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/12 19:45 net-next cddd2dc6390b 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/12 04:54 net-next cddd2dc6390b 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/12 00:33 net-next cddd2dc6390b 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/11 13:28 net-next b9d5f5711dd8 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/11 12:20 net-next b9d5f5711dd8 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/09 11:04 net-next 8d8b1a422c46 20bf80e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/07 22:29 net-next 7824463aaea9 cb2dcc0e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/06 23:12 net-next 8c4e4798123f c035c6de .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/05 16:07 net-next cdc74c9d06e7 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/04 18:20 net-next 173e7622ccb3 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/04 02:41 net-next 5829614a7b3b 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/05/02 23:52 net-next dcc61472534e ddfc15a1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ip_rt_bug
2024/04/24 01:34 linux-next 7b4f2bc91c15 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ip_rt_bug
2024/04/04 06:39 linux-next 727900b675b7 51c4dcff .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ip_rt_bug
2024/03/31 20:31 linux-next a6bd6c933339 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ip_rt_bug
2024/06/12 09:49 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8867bbd4a056 4d75f4f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ip_rt_bug
2024/04/05 00:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 707081b61156 0ee3535e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ip_rt_bug
2021/01/12 08:59 net-next-old beb401ec5006 2c1f2513 .config console log report info ci-upstream-net-kasan-gce
* Struck through repros no longer work on HEAD.