syzbot


kernel BUG at net/core/skbuff.c:LINE!

Status: public: reported C repro on 2019/04/11 00:00
Reported-by: syzbot+15a9a8d8299e821435ae@syzkaller.appspotmail.com
First crash: 2057d, last: 1598d
Similar bugs (16)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-44 kernel BUG at net/core/skbuff.c:LINE! C 79 1610d 1835d 0/2 public: reported C repro on 2019/04/11 08:44
linux-4.19 kernel BUG at net/core/skbuff.c:LINE! C unreliable 494 600d 1819d 0/1 upstream: reported C repro on 2019/04/27 20:12
android-54 kernel BUG in pfkey_send_acquire C 278 524d 1188d 0/2 auto-obsoleted due to no activity on 2023/04/19 14:24
upstream kernel BUG at net/core/skbuff.c:LINE! (2) net C 562 2274d 2363d 4/26 fixed on 2018/01/29 03:39
android-5-10 kernel BUG in add_grec C error 83 753d 827d 2/2 fixed on 2022/03/29 10:01
android-54 kernel BUG at net/core/skbuff.c:LINE! C 267 339d 1559d 0/2 auto-obsoleted due to no activity on 2023/08/22 15:17
android-5-10 kernel BUG in add_grec (2) C error inconclusive 1039 513d 513d 2/2 fixed on 2023/02/24 12:10
upstream kernel BUG in netem_enqueue net 9 491d 716d 22/26 fixed on 2023/02/24 13:50
android-5-10 kernel BUG in cdc_ncm_fill_tx_frame C error 40 846d 911d 1/2 fixed on 2021/12/29 12:20
upstream kernel BUG at net/core/skbuff.c:LINE! (3) C done 4399 1152d 2269d 19/26 fixed on 2021/03/10 01:48
upstream kernel BUG at net/core/skbuff.c:LINE! sctp 5 2369d 2440d 3/26 fixed on 2017/10/27 10:10
linux-4.19 kernel BUG in pfkey_send_acquire C done 56 1159d 1188d 1/1 fixed on 2021/03/18 08:30
linux-4.14 kernel BUG at net/core/skbuff.c:LINE! C 3066 415d 1834d 0/1 upstream: reported C repro on 2019/04/12 15:43
upstream kernel BUG in llc_sap_action_send_xid_c net C error 61 892d 1106d 20/26 fixed on 2021/11/10 00:50
upstream kernel BUG in pskb_expand_head net C done 1600 435d 886d 22/26 fixed on 2023/02/25 08:02
android-49 kernel BUG at net/core/skbuff.c:LINE! C 391 1599d 1835d 0/3 public: reported C repro on 2019/04/12 00:00

Sample crash report:
random: sshd: uninitialized urandom read (32 bytes read)
urandom_read: 1 callbacks suppressed
random: sshd: uninitialized urandom read (32 bytes read)
audit: type=1400 audit(1546837336.017:7): avc:  denied  { map } for  pid=1764 comm="syz-executor440" path="/root/syz-executor440467685" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:1452!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
Modules linked in:
CPU: 0 PID: 1767 Comm: syz-executor440 Not tainted 4.14.91+ #3
task: ffff8881ce2a1780 task.stack: ffff8881cc0e8000
RIP: 0010:pskb_expand_head+0xa7c/0xb30 net/core/skbuff.c:1452
RSP: 0018:ffff8881cc0ef8e0 EFLAGS: 00010297
RAX: ffff8881ce2a1780 RBX: ffff8881ccfb0500 RCX: 0000000001080020
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881ccfb05dc
RBP: 0000000001080020 R08: ffff8881ccfb05ba R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881ccfb05c4
R13: 0000000000000000 R14: 000000000000003f R15: ffff8881ccfb0500
FS:  00007fdcc63e4700(0000) GS:ffff8881d7600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdcc63e3e78 CR3: 00000001cc328002 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __pskb_pull_tail+0xc8/0x1390 net/core/skbuff.c:1888
 pskb_may_pull include/linux/skbuff.h:2132 [inline]
 ip6_datagram_recv_specific_ctl+0x1493/0x16e0 net/ipv6/datagram.c:715
 rawv6_recvmsg+0x8f3/0xb50 net/ipv6/raw.c:521
 sock_common_recvmsg+0xf6/0x190 net/core/sock.c:2946
 sock_recvmsg_nosec net/socket.c:818 [inline]
 sock_recvmsg net/socket.c:825 [inline]
 sock_recvmsg+0xc2/0x100 net/socket.c:821
 SYSC_recvfrom net/socket.c:1814 [inline]
 SyS_recvfrom+0x1a8/0x2e0 net/socket.c:1786
 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
Code: 48 8b 7c 24 18 e8 55 e1 25 ff e9 fd f6 ff ff 4c 89 f7 e8 48 e1 25 ff e9 8d fd ff ff e8 3e e1 25 ff e9 76 fc ff ff e8 e4 f4 03 ff <0f> 0b 48 8b 7c 24 18 e8 28 e1 25 ff e9 dd fa ff ff 4c 89 f7 e8 
RIP: pskb_expand_head+0xa7c/0xb30 net/core/skbuff.c:1452 RSP: ffff8881cc0ef8e0
---[ end trace e5c2c4f08cbfae01 ]---

Crashes (2743):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/01/07 05:04 android-4.14 3c207c880674 ee332608 .config console log report syz C ci-android-414-kasan-gce-root
2018/09/01 17:03 android-4.14 47350a9f13c6 a4718693 .config console log report syz C ci-android-414-kasan-gce-root
2019/12/04 08:39 android-4.14 b7f8d9ba4f3e 0ecb9746 .config console log report ci-android-414-kasan-gce-root
2019/12/03 16:51 android-4.14 e6b1fb0e83b2 ab342da3 .config console log report ci-android-414-kasan-gce-root
2019/12/03 15:58 android-4.14 e6b1fb0e83b2 ab342da3 .config console log report ci-android-414-kasan-gce-root
2019/12/03 14:29 android-4.14 e6b1fb0e83b2 ab342da3 .config console log report ci-android-414-kasan-gce-root
2019/12/03 13:26 android-4.14 e6b1fb0e83b2 ab342da3 .config console log report ci-android-414-kasan-gce-root
2019/12/03 12:22 android-4.14 e6b1fb0e83b2 ab342da3 .config console log report ci-android-414-kasan-gce-root
2019/12/03 11:09 android-4.14 e6b1fb0e83b2 ab342da3 .config console log report ci-android-414-kasan-gce-root
2019/12/03 09:50 android-4.14 e6b1fb0e83b2 ab342da3 .config console log report ci-android-414-kasan-gce-root
2019/12/03 08:30 android-4.14 e6b1fb0e83b2 ab342da3 .config console log report ci-android-414-kasan-gce-root
2019/12/03 07:21 android-4.14 e6b1fb0e83b2 ab342da3 .config console log report ci-android-414-kasan-gce-root
2019/12/02 09:28 android-4.14 13855a652bd5 f879db37 .config console log report ci-android-414-kasan-gce-root
2019/12/01 12:03 android-4.14 714ada7cabc7 a76bf83f .config console log report ci-android-414-kasan-gce-root
2019/12/01 10:23 android-4.14 714ada7cabc7 a76bf83f .config console log report ci-android-414-kasan-gce-root
2019/11/30 22:02 android-4.14 714ada7cabc7 a76bf83f .config console log report ci-android-414-kasan-gce-root
2019/11/30 21:37 android-4.14 714ada7cabc7 a76bf83f .config console log report ci-android-414-kasan-gce-root
2019/11/30 19:37 android-4.14 714ada7cabc7 3a75be00 .config console log report ci-android-414-kasan-gce-root
2019/11/30 16:44 android-4.14 714ada7cabc7 3a75be00 .config console log report ci-android-414-kasan-gce-root
2019/11/30 12:00 android-4.14 714ada7cabc7 3a75be00 .config console log report ci-android-414-kasan-gce-root
2019/11/30 10:17 android-4.14 714ada7cabc7 3a75be00 .config console log report ci-android-414-kasan-gce-root
2019/11/30 01:16 android-4.14 714ada7cabc7 3a75be00 .config console log report ci-android-414-kasan-gce-root
2019/11/29 08:56 android-4.14 714ada7cabc7 76357d6f .config console log report ci-android-414-kasan-gce-root
2019/11/29 00:13 android-4.14 714ada7cabc7 76357d6f .config console log report ci-android-414-kasan-gce-root
2019/11/28 21:57 android-4.14 714ada7cabc7 46869e3e .config console log report ci-android-414-kasan-gce-root
2019/11/28 08:10 android-4.14 714ada7cabc7 0d63f89c .config console log report ci-android-414-kasan-gce-root
2019/11/27 16:08 android-4.14 f9b4ab5c8e99 0d63f89c .config console log report ci-android-414-kasan-gce-root
2019/11/25 10:34 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/25 08:18 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/25 02:25 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/24 22:16 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/24 17:00 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/24 13:54 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/24 11:34 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/24 08:03 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/24 03:52 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/24 02:10 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/23 22:24 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/23 19:43 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/23 12:01 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/23 11:01 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/23 09:10 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/23 07:22 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
2019/11/23 05:22 android-4.14 437a2a739c5f 598ca6c8 .config console log report ci-android-414-kasan-gce-root
* Struck through repros no longer work on HEAD.