syzbot


WARNING in skb_try_coalesce

Status: public: reported C repro on 2019/04/13 00:00
Reported-by: syzbot+ef6f9535199f89763a4c@syzkaller.appspotmail.com
First crash: 2170d, last: 1543d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in skb_try_coalesce net C error 1521 636d 1090d 22/26 fixed on 2023/02/24 13:50
android-44 WARNING in skb_try_coalesce C 6 1580d 1778d 0/2 public: reported C repro on 2019/04/13 00:00

Sample crash report:
random: crng init done
------------[ cut here ]------------
WARNING: CPU: 0 PID: 2264 at net/core/skbuff.c:4353 skb_try_coalesce+0xeb1/0x1270 net/core/skbuff.c:4353
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 2264 Comm: syz-executor023 Not tainted 4.9.125+ #36
 ffff8801b70373e0 ffffffff81af0ae9 ffffffff82838ba0 00000000ffffffff
 0000000000000000 0000000000000000 0000000000001101 ffff8801b70374a0
 ffffffff813df095 0000000041b58ab3 ffffffff82c28773 ffffffff813deed6
Call Trace:
 [<ffffffff81af0ae9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81af0ae9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff813df095>] panic+0x1bf/0x39f kernel/panic.c:179
 [<ffffffff813df364>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542
 [<ffffffff810d93cc>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff82250461>] skb_try_coalesce+0xeb1/0x1270 net/core/skbuff.c:4353
 [<ffffffff8246ce79>] tcp_try_coalesce+0x159/0x490 net/ipv4/tcp_input.c:4362
 [<ffffffff8246d2d7>] tcp_queue_rcv+0x127/0x590 net/ipv4/tcp_input.c:4616
 [<ffffffff824834fd>] tcp_data_queue+0x96d/0x38a0 net/ipv4/tcp_input.c:4725
 [<ffffffff8248696d>] tcp_rcv_established+0x53d/0x1ff0 net/ipv4/tcp_input.c:5613
 [<ffffffff826b7ef1>] tcp_v6_do_rcv+0xcd1/0x10e0 net/ipv6/tcp_ipv6.c:1283
 [<ffffffff822317ba>] sk_backlog_rcv include/net/sock.h:871 [inline]
 [<ffffffff822317ba>] __release_sock+0x13a/0x390 net/core/sock.c:2059
 [<ffffffff82237a37>] __sk_flush_backlog+0x27/0x40 net/core/sock.c:2079
 [<ffffffff8246098e>] sk_flush_backlog include/net/sock.h:940 [inline]
 [<ffffffff8246098e>] tcp_sendmsg+0x245e/0x2fd0 net/ipv4/tcp.c:1225
 [<ffffffff82510da3>] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:770
 [<ffffffff8222361b>] sock_sendmsg_nosec net/socket.c:648 [inline]
 [<ffffffff8222361b>] sock_sendmsg+0xbb/0x110 net/socket.c:658
 [<ffffffff82227680>] SYSC_sendto net/socket.c:1683 [inline]
 [<ffffffff82227680>] SyS_sendto+0x220/0x370 net/socket.c:1651
 [<ffffffff8100554f>] do_syscall_64+0x19f/0x480 arch/x86/entry/common.c:282
 [<ffffffff8278c193>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (106):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/09/05 17:18 https://android.googlesource.com/kernel/common android-4.9 a925dfbdda73 196410e4 .config console log report syz C ci-android-49-kasan-gce-root
2018/09/05 15:16 https://android.googlesource.com/kernel/common android-4.9 a925dfbdda73 196410e4 .config console log report syz C ci-android-49-kasan-gce
2018/09/05 15:41 https://android.googlesource.com/kernel/common android-4.9 a925dfbdda73 196410e4 .config console log report syz C ci-android-49-kasan-gce-386
2018/03/16 15:36 https://android.googlesource.com/kernel/common android-4.9 fc8bd0f6ffec 08dacaa0 .config console log report syz ci-android-49-kasan-gce
2019/12/03 22:30 android-4.9 a36b5017c810 ae13a849 .config console log report ci-android-49-kasan-gce-root
2019/12/02 08:52 android-4.9 a36b5017c810 f879db37 .config console log report ci-android-49-kasan-gce-root
2019/11/28 23:00 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 46869e3e .config console log report ci-android-49-kasan-gce
2019/11/27 02:53 android-4.9 13ff5130ff6e 1048481f .config console log report ci-android-49-kasan-gce-root
2019/11/27 02:41 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 1048481f .config console log report ci-android-49-kasan-gce
2019/11/26 13:23 android-4.9 13ff5130ff6e f746151a .config console log report ci-android-49-kasan-gce-root
2019/11/26 09:57 android-4.9 13ff5130ff6e f746151a .config console log report ci-android-49-kasan-gce-root
2019/11/25 15:27 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 371caf77 .config console log report ci-android-49-kasan-gce
2019/11/25 07:49 android-4.9 258971b8e1ac 598ca6c8 .config console log report ci-android-49-kasan-gce-root
2019/11/24 03:38 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 598ca6c8 .config console log report ci-android-49-kasan-gce
2019/11/23 04:01 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 598ca6c8 .config console log report ci-android-49-kasan-gce
2019/11/23 03:59 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 598ca6c8 .config console log report ci-android-49-kasan-gce
2019/11/23 02:27 android-4.9 258971b8e1ac 598ca6c8 .config console log report ci-android-49-kasan-gce-root
2019/11/22 20:28 android-4.9 258971b8e1ac 598ca6c8 .config console log report ci-android-49-kasan-gce-root
2019/11/21 03:05 android-4.9 258971b8e1ac 8098ea0f .config console log report ci-android-49-kasan-gce-root
2019/11/20 11:23 android-4.9 258971b8e1ac f4b7ed07 .config console log report ci-android-49-kasan-gce-root
2019/11/18 21:35 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 1daed50a .config console log report ci-android-49-kasan-gce
2019/11/17 13:42 android-4.9 258971b8e1ac d5696d51 .config console log report ci-android-49-kasan-gce-root
2019/11/17 02:45 android-4.9 258971b8e1ac d5696d51 .config console log report ci-android-49-kasan-gce-root
2019/11/16 14:21 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 d5696d51 .config console log report ci-android-49-kasan-gce
2019/11/16 04:08 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 cdac920b .config console log report ci-android-49-kasan-gce
2019/11/14 16:17 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 5d15a967 .config console log report ci-android-49-kasan-gce-root
2019/11/14 08:26 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 048f2d49 .config console log report ci-android-49-kasan-gce-root
2019/11/13 17:59 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 048f2d49 .config console log report ci-android-49-kasan-gce
2019/11/13 13:16 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 048f2d49 .config console log report ci-android-49-kasan-gce-root
2019/11/12 07:53 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 048f2d49 .config console log report ci-android-49-kasan-gce-root
2019/11/11 15:02 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 dc438b91 .config console log report ci-android-49-kasan-gce-root
2019/11/08 15:26 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 1e35461e .config console log report ci-android-49-kasan-gce-root
2019/11/08 14:06 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 1e35461e .config console log report ci-android-49-kasan-gce-root
2019/11/07 15:01 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 d797d201 .config console log report ci-android-49-kasan-gce
2019/11/07 00:14 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 da505f84 .config console log report ci-android-49-kasan-gce-root
2019/11/07 00:14 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 da505f84 .config console log report ci-android-49-kasan-gce
2019/11/05 23:59 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 0f3ec414 .config console log report ci-android-49-kasan-gce-root
2019/11/05 22:32 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 0f3ec414 .config console log report ci-android-49-kasan-gce-root
2019/11/05 17:12 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 0f3ec414 .config console log report ci-android-49-kasan-gce-root
2019/11/04 02:02 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 b35fad31 .config console log report ci-android-49-kasan-gce-root
2019/11/03 21:47 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 c9610487 .config console log report ci-android-49-kasan-gce-root
2019/11/03 04:45 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 a41ca8fa .config console log report ci-android-49-kasan-gce
2019/11/03 04:44 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 a41ca8fa .config console log report ci-android-49-kasan-gce-root
2019/10/31 19:36 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 a41ca8fa .config console log report ci-android-49-kasan-gce
2019/10/30 18:07 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 5ea87a66 .config console log report ci-android-49-kasan-gce-root
2019/10/30 16:34 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 5ea87a66 .config console log report ci-android-49-kasan-gce-root
2019/10/29 23:32 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 5ea87a66 .config console log report ci-android-49-kasan-gce-root
2019/10/29 23:32 https://android.googlesource.com/kernel/common android-4.9 7fe05eede1c8 5ea87a66 .config console log report ci-android-49-kasan-gce-root
2019/10/29 23:31 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 5ea87a66 .config console log report ci-android-49-kasan-gce
2018/03/16 14:42 https://android.googlesource.com/kernel/common android-4.9 fc8bd0f6ffec 08dacaa0 .config console log report ci-android-49-kasan-gce
2018/10/26 07:51 https://android.googlesource.com/kernel/common android-4.9 b8bd066f13f4 a8292de9 .config console log report ci-android-49-kasan-gce-386
* Struck through repros no longer work on HEAD.