syzbot


WARNING in skb_warn_bad_offload

Status: public: reported C repro on 2019/04/12 00:00
Reported-by: syzbot+49af732eca4899d690d7@syzkaller.appspotmail.com
First crash: 2272d, last: 1547d
Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in skb_warn_bad_offload C inconclusive 81 664d 1525d 0/1 upstream: reported C repro on 2019/12/25 14:39
android-49 WARNING in skb_warn_bad_offload (3) C 2188 1547d 1784d 0/3 public: reported C repro on 2019/04/11 08:44
android-49 WARNING in skb_warn_bad_offload C 442 2304d 2410d 1/3 fixed on 2017/11/07 12:35
upstream WARNING in skb_warn_bad_offload (3) net C done 115 369d 506d 22/26 fixed on 2023/02/24 13:50
upstream WARNING in skb_warn_bad_offload net C 6527 2186d 2309d 5/26 fixed on 2018/04/09 09:36
android-49 WARNING in skb_warn_bad_offload (2) C 2630 2134d 2303d 0/3 closed as invalid on 2018/04/25 20:49
upstream WARNING in skb_warn_bad_offload (4) net C done 1763 131d 159d 25/26 fixed on 2023/12/21 03:45
upstream WARNING in skb_warn_bad_offload (2) net C 6 2132d 2132d 8/26 fixed on 2018/07/09 18:05

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 11935 at net/core/dev.c:2456 skb_warn_bad_offload+0x2af/0x380 net/core/dev.c:2451()
sit0: caps=(0x00000000001b7869, 0x0000000000000000) len=65081 data_len=65033 gso_size=1432 gso_type=2 ip_summed=0
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 11935 Comm: syz-executor718 Not tainted 4.4.136-ge4798d7 #60
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 34579f44c285d585 ffff8800acfd7120 ffffffff81e0edad
 ffffffff83a43ec0 ffff8800b66d9800 ffffffff83ec6600 0000000000000009
 0000000000000998 ffff8800acfd71e0 ffffffff8140a184 0000000041b58ab3
Call Trace:
 [<ffffffff81e0edad>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81e0edad>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff8140a184>] panic+0x19e/0x38d kernel/panic.c:112
 [<ffffffff8140a3a8>] warn_slowpath_common.cold.6+0x20/0x20 kernel/panic.c:455
 [<ffffffff8112ffff>] warn_slowpath_fmt+0xbf/0x100 kernel/panic.c:471
 [<ffffffff82f6f87f>] skb_warn_bad_offload+0x2af/0x380 net/core/dev.c:2451
 [<ffffffff82f87c0e>] __skb_gso_segment+0x3ce/0x490 net/core/dev.c:2609
 [<ffffffff82f888cb>] skb_gso_segment include/linux/netdevice.h:3705 [inline]
 [<ffffffff82f888cb>] validate_xmit_skb.isra.103.part.104+0x48b/0xaa0 net/core/dev.c:2817
 [<ffffffff82f8baf7>] validate_xmit_skb include/linux/spinlock.h:302 [inline]
 [<ffffffff82f8baf7>] __dev_queue_xmit+0x1687/0x1c80 net/core/dev.c:3199
 [<ffffffff82f8c107>] dev_queue_xmit+0x17/0x20 net/core/dev.c:3241
 [<ffffffff82f9d935>] neigh_direct_output+0x15/0x20 net/core/neighbour.c:1366
 [<ffffffff83429d29>] dst_neigh_output include/net/dst.h:461 [inline]
 [<ffffffff83429d29>] ip6_finish_output2+0x929/0x1ca0 net/ipv6/ip6_output.c:113
 [<ffffffff83433368>] ip6_finish_output+0x3b8/0x760 net/ipv6/ip6_output.c:131
 [<ffffffff834338c8>] NF_HOOK_COND include/linux/netfilter.h:240 [inline]
 [<ffffffff834338c8>] ip6_output+0x1b8/0x520 net/ipv6/ip6_output.c:145
 [<ffffffff8355cb9b>] dst_output include/net/dst.h:498 [inline]
 [<ffffffff8355cb9b>] ip6_local_out+0x9b/0x180 net/ipv6/output_core.c:169
 [<ffffffff83435901>] ip6_send_skb+0xa1/0x340 net/ipv6/ip6_output.c:1725
 [<ffffffff834917aa>] udp_v6_send_skb+0x5ba/0xe70 net/ipv6/udp.c:1066
 [<ffffffff8349714e>] udpv6_sendmsg+0x1f2e/0x24c0 net/ipv6/udp.c:1330
 [<ffffffff83300ef3>] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:755
 [<ffffffff82f1e1fc>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82f1e1fc>] sock_sendmsg+0xcc/0x110 net/socket.c:635
 [<ffffffff82f1eedc>] SYSC_sendto+0x21c/0x370 net/socket.c:1665
 [<ffffffff82f21560>] SyS_sendto+0x40/0x50 net/socket.c:1633
 [<ffffffff838c2825>] entry_SYSCALL_64_fastpath+0x22/0x9e
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (2265):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/06/12 19:56 https://android.googlesource.com/kernel/common android-4.4 e4798d7f13c7 6dcbc435 .config console log report syz C ci-android-44-kasan-gce
2018/02/26 05:04 https://android.googlesource.com/kernel/common android-4.4 17c7c494f718 9fe8aa42 .config console log report syz C ci-android-44-kasan-gce
2018/02/25 03:24 https://android.googlesource.com/kernel/common android-4.4 17c7c494f718 5c1e0207 .config console log report syz C ci-android-44-kasan-gce
2018/02/22 12:24 https://android.googlesource.com/kernel/common android-4.4 014c9019a2f6 04cbdbd1 .config console log report syz C ci-android-44-kasan-gce
2018/02/22 02:16 https://android.googlesource.com/kernel/common android-4.4 014c9019a2f6 04cbdbd1 .config console log report syz C ci-android-44-kasan-gce
2018/02/20 17:50 https://android.googlesource.com/kernel/common android-4.4 20ddb25b3ebf 5abac192 .config console log report syz C ci-android-44-kasan-gce
2018/02/20 12:38 https://android.googlesource.com/kernel/common android-4.4 55a366596215 5abac192 .config console log report syz C ci-android-44-kasan-gce
2018/01/14 01:52 https://android.googlesource.com/kernel/common android-4.4 7902639f8133 c9e7aeae .config console log report syz C ci-android-44-kasan-gce-386
2018/01/13 15:56 https://android.googlesource.com/kernel/common android-4.4 7902639f8133 c9e7aeae .config console log report syz C ci-android-44-kasan-gce
2018/01/11 00:20 https://android.googlesource.com/kernel/common android-4.4 f8518889ffe8 02a19b64 .config console log report syz C ci-android-44-kasan-gce-386
2018/01/10 14:47 https://android.googlesource.com/kernel/common android-4.4 f8518889ffe8 02a19b64 .config console log report syz C ci-android-44-kasan-gce
2018/01/07 05:49 https://android.googlesource.com/kernel/common android-4.4 dac143966992 19c05fff .config console log report syz C ci-android-44-kasan-gce-386
2018/01/07 00:34 https://android.googlesource.com/kernel/common android-4.4 d891a62401ae 053171ea .config console log report syz C ci-android-44-kasan-gce
2018/01/03 06:16 https://android.googlesource.com/kernel/common android-4.4 610c835673f3 00193447 .config console log report syz C ci-android-44-kasan-gce-386
2017/12/31 13:29 https://android.googlesource.com/kernel/common android-4.4 610c835673f3 00193447 .config console log report syz C ci-android-44-kasan-gce
2017/12/09 12:27 https://android.googlesource.com/kernel/common android-4.4 ed884ebd80a9 5ad0ce95 .config console log report syz C ci-android-44-kasan-gce
2018/02/26 05:04 https://android.googlesource.com/kernel/common android-4.4 17c7c494f718 9fe8aa42 .config console log report syz C ci-android-44-kasan-gce-386
2018/02/25 03:25 https://android.googlesource.com/kernel/common android-4.4 17c7c494f718 5c1e0207 .config console log report syz C ci-android-44-kasan-gce-386
2018/02/22 12:22 https://android.googlesource.com/kernel/common android-4.4 014c9019a2f6 04cbdbd1 .config console log report syz C ci-android-44-kasan-gce-386
2018/02/22 02:15 https://android.googlesource.com/kernel/common android-4.4 014c9019a2f6 04cbdbd1 .config console log report syz C ci-android-44-kasan-gce-386
2018/02/20 17:48 https://android.googlesource.com/kernel/common android-4.4 20ddb25b3ebf 5abac192 .config console log report syz C ci-android-44-kasan-gce-386
2018/02/20 12:38 https://android.googlesource.com/kernel/common android-4.4 55a366596215 5abac192 .config console log report syz C ci-android-44-kasan-gce-386
2018/11/01 07:49 https://android.googlesource.com/kernel/common android-4.4 c4b00eb70496 1f38e9ae .config console log report syz ci-android-44-kasan-gce
2018/11/01 04:55 https://android.googlesource.com/kernel/common android-4.4 c4b00eb70496 1f38e9ae .config console log report syz ci-android-44-kasan-gce-386
2018/06/12 21:12 https://android.googlesource.com/kernel/common android-4.4 e4798d7f13c7 6dcbc435 .config console log report syz ci-android-44-kasan-gce-386
2019/12/04 12:25 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 0ecb9746 .config console log report ci-android-44-kasan-gce
2019/12/01 14:33 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b a76bf83f .config console log report ci-android-44-kasan-gce
2019/11/18 19:58 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 1daed50a .config console log report ci-android-44-kasan-gce
2019/11/16 02:14 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b cdac920b .config console log report ci-android-44-kasan-gce
2019/11/14 11:38 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 5d15a967 .config console log report ci-android-44-kasan-gce
2019/11/14 08:50 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 5d15a967 .config console log report ci-android-44-kasan-gce
2019/11/10 02:47 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b dc438b91 .config console log report ci-android-44-kasan-gce
2019/11/09 16:10 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b dc438b91 .config console log report ci-android-44-kasan-gce
2019/11/09 08:13 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b dc438b91 .config console log report ci-android-44-kasan-gce
2019/11/08 08:33 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 1e35461e .config console log report ci-android-44-kasan-gce
2019/11/04 11:05 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b b35fad31 .config console log report ci-android-44-kasan-gce
2019/11/04 08:00 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b b35fad31 .config console log report ci-android-44-kasan-gce
2019/11/03 04:33 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b a41ca8fa .config console log report ci-android-44-kasan-gce
2019/10/18 19:46 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 8c88c9c1 .config console log report ci-android-44-kasan-gce
2019/10/15 10:36 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 05ad7292 .config console log report ci-android-44-kasan-gce
2019/10/04 18:58 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 3e1e84d4 .config console log report ci-android-44-kasan-gce
2019/09/19 08:33 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 46c0be24 .config console log report ci-android-44-kasan-gce
2019/09/07 23:22 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b a60cb4cd .config console log report ci-android-44-kasan-gce
2019/08/14 14:37 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 5576551b .config console log report ci-android-44-kasan-gce
2019/08/12 14:43 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b acb51638 .config console log report ci-android-44-kasan-gce
2019/08/11 09:27 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b acb51638 .config console log report ci-android-44-kasan-gce
2019/07/19 00:43 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 7bb222f7 .config console log report ci-android-44-kasan-gce
2019/07/18 20:10 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 7bb222f7 .config console log report ci-android-44-kasan-gce
2019/07/18 15:10 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 7bb222f7 .config console log report ci-android-44-kasan-gce
2019/12/04 07:50 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b ae13a849 .config console log report ci-android-44-kasan-gce-386
2019/11/22 22:15 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 598ca6c8 .config console log report ci-android-44-kasan-gce-386
2019/11/17 20:12 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b d5696d51 .config console log report ci-android-44-kasan-gce-386
2019/11/14 22:58 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b a24fe792 .config console log report ci-android-44-kasan-gce-386
2019/10/22 22:53 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 5681358a .config console log report ci-android-44-kasan-gce-386
2019/10/19 03:47 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 8c88c9c1 .config console log report ci-android-44-kasan-gce-386
2019/10/18 01:02 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 8c88c9c1 .config console log report ci-android-44-kasan-gce-386
2019/10/12 09:55 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 426631dd .config console log report ci-android-44-kasan-gce-386
2019/10/08 22:25 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b b1ebbfef .config console log report ci-android-44-kasan-gce-386
2019/10/07 02:14 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b f3f7d9c8 .config console log report ci-android-44-kasan-gce-386
2019/10/06 17:26 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b f3f7d9c8 .config console log report ci-android-44-kasan-gce-386
2019/10/06 06:28 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b f3f7d9c8 .config console log report ci-android-44-kasan-gce-386
2019/10/04 23:42 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b f3f7d9c8 .config console log report ci-android-44-kasan-gce-386
2019/10/03 03:24 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 2e29b534 .config console log report ci-android-44-kasan-gce-386
2019/09/10 17:19 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b a60cb4cd .config console log report ci-android-44-kasan-gce-386
2019/09/08 07:04 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b a60cb4cd .config console log report ci-android-44-kasan-gce-386
2019/08/08 13:57 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b e6ebef88 .config console log report ci-android-44-kasan-gce-386
2019/08/06 13:29 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 6affd8e8 .config console log report ci-android-44-kasan-gce-386
2019/07/28 07:24 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b c85e1c5b .config console log report ci-android-44-kasan-gce-386
2019/07/27 04:52 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b c85e1c5b .config console log report ci-android-44-kasan-gce-386
2019/07/25 23:19 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 732bc5a0 .config console log report ci-android-44-kasan-gce-386
2019/07/17 17:55 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b f613a7c4 .config console log report ci-android-44-kasan-gce-386
* Struck through repros no longer work on HEAD.