syzbot


WARNING in skb_warn_bad_offload (3)

Status: public: reported C repro on 2019/04/11 08:44
Reported-by: syzbot+5b4eaf7199e2877988fc@syzkaller.appspotmail.com
First crash: 2279d, last: 1693d
Similar bugs (9)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in skb_warn_bad_offload C inconclusive 81 811d 1672d 0/1 upstream: reported C repro on 2019/12/25 14:39
upstream WARNING in skb_warn_bad_offload (5) net C done 6 2d05h 7d19h 0/27 upstream: reported C repro on 2024/07/16 01:23
android-49 WARNING in skb_warn_bad_offload C 442 2450d 2557d 1/3 fixed on 2017/11/07 12:35
android-44 WARNING in skb_warn_bad_offload C 2265 1693d 1929d 0/2 public: reported C repro on 2019/04/12 00:00
upstream WARNING in skb_warn_bad_offload (3) net C done 115 516d 652d 22/27 fixed on 2023/02/24 13:50
upstream WARNING in skb_warn_bad_offload net C 6527 2332d 2456d 5/27 fixed on 2018/04/09 09:36
android-49 WARNING in skb_warn_bad_offload (2) C 2630 2281d 2450d 0/3 closed as invalid on 2018/04/25 20:49
upstream WARNING in skb_warn_bad_offload (4) net C done 1763 277d 305d 25/27 fixed on 2023/12/21 03:45
upstream WARNING in skb_warn_bad_offload (2) net C 6 2278d 2278d 8/27 fixed on 2018/07/09 18:05

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6595 at net/core/dev.c:2473 skb_warn_bad_offload+0x2af/0x380 net/core/dev.c:2468
sit0: caps=(0x00000000803b7869, 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: 6595 Comm: syz-executor686 Not tainted 4.9.107-gdb2c520 #46
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c26d70d8 ffffffff81eb3da9 ffffffff83c48b40 00000000ffffffff
 0000000000000000 0000000000000001 00000000000009a9 ffff8801c26d7198
 ffffffff81421925 0000000041b58ab3 ffffffff843b9b48 ffffffff81421766
Call Trace:
 [<ffffffff81eb3da9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb3da9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81421925>] panic+0x1bf/0x3bc kernel/panic.c:179
 [<ffffffff81421c11>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542
 [<ffffffff81136662>] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:565
 [<ffffffff8306cd6f>] skb_warn_bad_offload+0x2af/0x380 net/core/dev.c:2468
 [<ffffffff830880f6>] __skb_gso_segment+0x546/0x680 net/core/dev.c:2774
 [<ffffffff830890ae>] skb_gso_segment include/linux/netdevice.h:4000 [inline]
 [<ffffffff830890ae>] validate_xmit_skb+0x48e/0xab0 net/core/dev.c:3010
 [<ffffffff8308abe8>] __dev_queue_xmit+0x888/0x2080 net/core/dev.c:3443
 [<ffffffff8308c3f7>] dev_queue_xmit+0x17/0x20 net/core/dev.c:3484
 [<ffffffff830a0b55>] neigh_direct_output+0x15/0x20 net/core/neighbour.c:1362
 [<ffffffff83557bf8>] dst_neigh_output include/net/dst.h:470 [inline]
 [<ffffffff83557bf8>] ip6_finish_output2+0x8a8/0x1d00 net/ipv6/ip6_output.c:119
 [<ffffffff835613d8>] ip6_finish_output+0x3b8/0x760 net/ipv6/ip6_output.c:145
 [<ffffffff83561973>] NF_HOOK_COND include/linux/netfilter.h:246 [inline]
 [<ffffffff83561973>] ip6_output+0x1f3/0x6e0 net/ipv6/ip6_output.c:162
 [<ffffffff8367b5bb>] dst_output include/net/dst.h:507 [inline]
 [<ffffffff8367b5bb>] ip6_local_out+0x9b/0x180 net/ipv6/output_core.c:176
 [<ffffffff83563b31>] ip6_send_skb+0xa1/0x340 net/ipv6/ip6_output.c:1750
 [<ffffffff835c380a>] udp_v6_send_skb+0x5ba/0xe70 net/ipv6/udp.c:974
 [<ffffffff835c923b>] udpv6_sendmsg+0x1ebb/0x2430 net/ipv6/udp.c:1246
 [<ffffffff83429ec3>] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:770
 [<ffffffff83016fcc>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff83016fcc>] sock_sendmsg+0xcc/0x110 net/socket.c:645
 [<ffffffff83017cbc>] SYSC_sendto+0x21c/0x370 net/socket.c:1670
 [<ffffffff8301a2d0>] SyS_sendto+0x40/0x50 net/socket.c:1638
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839f9b13>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (2188):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/06/12 19:44 https://android.googlesource.com/kernel/common android-4.9 db2c520bb56b 6dcbc435 .config console log report syz C ci-android-49-kasan-gce-root
2018/06/12 19:26 https://android.googlesource.com/kernel/common android-4.9 db2c520bb56b 6dcbc435 .config console log report syz C ci-android-49-kasan-gce
2018/11/01 06:18 https://android.googlesource.com/kernel/common android-4.9 4ba3f69128be 1f38e9ae .config console log report syz ci-android-49-kasan-gce
2018/11/01 05:54 https://android.googlesource.com/kernel/common android-4.9 4ba3f69128be 1f38e9ae .config console log report syz ci-android-49-kasan-gce-root
2018/05/03 05:19 https://android.googlesource.com/kernel/common android-4.9 f679e4d9b77a d5b114b4 .config console log report syz ci-android-49-kasan-gce
2018/11/01 05:11 https://android.googlesource.com/kernel/common android-4.9 4ba3f69128be 1f38e9ae .config console log report syz ci-android-49-kasan-gce-386
2018/06/12 19:40 https://android.googlesource.com/kernel/common android-4.9 db2c520bb56b 6dcbc435 .config console log report syz ci-android-49-kasan-gce-386
2018/05/03 15:46 https://android.googlesource.com/kernel/common android-4.9 f679e4d9b77a 9ce14f4b .config console log report syz ci-android-49-kasan-gce-386
2018/05/02 17:59 https://android.googlesource.com/kernel/common android-4.9 1321d4226176 d5b114b4 .config console log report syz ci-android-49-kasan-gce-386
2018/04/30 06:34 https://android.googlesource.com/kernel/common android-4.9 71fce1edd26d bb79c6ab .config console log report syz ci-android-49-kasan-gce-386
2018/04/29 22:39 https://android.googlesource.com/kernel/common android-4.9 71fce1edd26d bb79c6ab .config console log report syz ci-android-49-kasan-gce-386
2019/12/04 06:21 android-4.9 a36b5017c810 ae13a849 .config console log report ci-android-49-kasan-gce-root
2019/12/03 07:16 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 ab342da3 .config console log report ci-android-49-kasan-gce
2019/12/03 00:16 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 ab342da3 .config console log report ci-android-49-kasan-gce
2019/12/02 12:14 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 f879db37 .config console log report ci-android-49-kasan-gce
2019/12/01 22:06 android-4.9 a36b5017c810 a76bf83f .config console log report ci-android-49-kasan-gce-root
2019/11/29 15:11 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 d29b9e84 .config console log report ci-android-49-kasan-gce
2019/11/29 06:41 android-4.9 13ff5130ff6e 76357d6f .config console log report ci-android-49-kasan-gce-root
2019/11/27 23:36 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 0d63f89c .config console log report ci-android-49-kasan-gce
2019/11/27 05:36 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 1048481f .config console log report ci-android-49-kasan-gce
2019/11/26 22:39 android-4.9 13ff5130ff6e 1048481f .config console log report ci-android-49-kasan-gce-root
2019/11/24 18:02 android-4.9 258971b8e1ac 598ca6c8 .config console log report ci-android-49-kasan-gce-root
2019/11/22 17:02 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 598ca6c8 .config console log report ci-android-49-kasan-gce
2019/11/22 01:30 android-4.9 258971b8e1ac 8098ea0f .config console log report ci-android-49-kasan-gce-root
2019/11/21 17:59 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 8098ea0f .config console log report ci-android-49-kasan-gce
2019/11/20 16:49 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 f4b7ed07 .config console log report ci-android-49-kasan-gce
2019/11/20 00:05 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 5bc70212 .config console log report ci-android-49-kasan-gce
2019/11/19 06:25 android-4.9 258971b8e1ac 5bc70212 .config console log report ci-android-49-kasan-gce-root
2019/11/16 14:25 android-4.9 258971b8e1ac d5696d51 .config console log report ci-android-49-kasan-gce-root
2019/11/14 22:30 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 a24fe792 .config console log report ci-android-49-kasan-gce
2019/11/13 18:59 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 048f2d49 .config console log report ci-android-49-kasan-gce
2019/11/13 14:36 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 048f2d49 .config console log report ci-android-49-kasan-gce
2019/11/13 02:56 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 048f2d49 .config console log report ci-android-49-kasan-gce
2019/11/12 14:25 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 048f2d49 .config console log report ci-android-49-kasan-gce
2019/11/12 10:55 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 048f2d49 .config console log report ci-android-49-kasan-gce-root
2019/11/12 09:23 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 048f2d49 .config console log report ci-android-49-kasan-gce
2019/11/08 05:06 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 f39aff9e .config console log report ci-android-49-kasan-gce-root
2019/11/07 17:03 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 d797d201 .config console log report ci-android-49-kasan-gce
2019/11/06 04:18 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 bc2c6e45 .config console log report ci-android-49-kasan-gce
2019/11/03 23:18 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 c9610487 .config console log report ci-android-49-kasan-gce-root
2019/11/03 18:03 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 c9610487 .config console log report ci-android-49-kasan-gce
2019/11/01 11:52 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 a41ca8fa .config console log report ci-android-49-kasan-gce
2019/10/30 04:48 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 5ea87a66 .config console log report ci-android-49-kasan-gce-root
2019/10/28 21:06 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 439d7b14 .config console log report ci-android-49-kasan-gce
2019/10/28 13:33 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 25bb509e .config console log report ci-android-49-kasan-gce-root
2019/10/27 21:31 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 25bb509e .config console log report ci-android-49-kasan-gce
2019/10/27 14:19 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 25bb509e .config console log report ci-android-49-kasan-gce
2019/10/26 23:28 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 25bb509e .config console log report ci-android-49-kasan-gce-root
2019/10/26 20:01 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 25bb509e .config console log report ci-android-49-kasan-gce
2018/04/27 03:36 https://android.googlesource.com/kernel/common android-4.9 71fce1edd26d 73417389 .config console log report ci-android-49-kasan-gce-root
2019/12/03 10:41 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 ab342da3 .config console log report ci-android-49-kasan-gce-386
2019/12/02 01:08 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 f879db37 .config console log report ci-android-49-kasan-gce-386
2019/11/27 17:42 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 0d63f89c .config console log report ci-android-49-kasan-gce-386
2019/11/20 18:29 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 f4b7ed07 .config console log report ci-android-49-kasan-gce-386
2019/11/17 07:09 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 d5696d51 .config console log report ci-android-49-kasan-gce-386
2019/11/16 03:25 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 cdac920b .config console log report ci-android-49-kasan-gce-386
2019/11/16 01:38 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 cdac920b .config console log report ci-android-49-kasan-gce-386
2019/11/12 02:08 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 048f2d49 .config console log report ci-android-49-kasan-gce-386
2019/11/06 04:32 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 bc2c6e45 .config console log report ci-android-49-kasan-gce-386
2019/11/01 05:38 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 a41ca8fa .config console log report ci-android-49-kasan-gce-386
2019/10/30 12:30 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 5ea87a66 .config console log report ci-android-49-kasan-gce-386
2019/10/29 06:55 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 5ea87a66 .config console log report ci-android-49-kasan-gce-386
* Struck through repros no longer work on HEAD.