syzbot


general protection fault in skb_queue_tail

Status: fixed on 2019/05/27 12:48
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 032be5f19a94 rxrpc: fix race condition in rxrpc_input_packet()
First crash: 1254d, last: 1252d

Cause bisection: introduced by (bisect log) :
commit 46894a13599a977ac35411b536fb3e0b2feefa95
Author: David Howells <dhowells@redhat.com>
Date: Thu Oct 4 08:32:28 2018 +0000

  rxrpc: Use IPv4 addresses throught the IPv6

Crash: general protection fault in skb_queue_tail (log)
Repro: C syz .config
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream general protection fault in skb_queue_tail (2) 2 429d 438d 0/24 auto-closed as invalid on 2021/10/23 19:22

Sample crash report:
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 18927 Comm: syz-executor833 Not tainted 5.1.0-rc6 #79
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0xbef/0x3fb0 kernel/locking/lockdep.c:3573
Code: 00 0f 85 a5 1f 00 00 48 81 c4 10 01 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 4a 21 00 00 49 81 7d 00 20 54 9c 89 0f 84 cf f4
RSP: 0018:ffff8880a4606f58 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000026 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8880a4607090 R08: 0000000000000001 R09: 0000000000000001
R10: ffffed1015d25bc7 R11: ffff88808bea0680 R12: 0000000000000000
R13: 0000000000000130 R14: 0000000000000001 R15: 0000000000000001
FS:  00007f9f67e17700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004b6040 CR3: 00000000a8a9e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4211
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152
 skb_queue_tail+0x26/0x150 net/core/skbuff.c:2972
 rxrpc_reject_packet net/rxrpc/input.c:1126 [inline]
 rxrpc_input_packet+0x4a0/0x5536 net/rxrpc/input.c:1414
 udp_queue_rcv_one_skb+0xaf2/0x1780 net/ipv4/udp.c:2011
 udp_queue_rcv_skb+0x128/0x730 net/ipv4/udp.c:2085
 udp_unicast_rcv_skb.isra.0+0xb9/0x360 net/ipv4/udp.c:2245
 __udp4_lib_rcv+0x701/0x2ca0 net/ipv4/udp.c:2301
 udp_rcv+0x22/0x30 net/ipv4/udp.c:2482
 ip_protocol_deliver_rcu+0x60/0x8f0 net/ipv4/ip_input.c:208
 ip_local_deliver_finish+0x23b/0x390 net/ipv4/ip_input.c:234
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 ip_local_deliver+0x1e9/0x520 net/ipv4/ip_input.c:255
 dst_input include/net/dst.h:450 [inline]
 ip_rcv_finish+0x1e1/0x300 net/ipv4/ip_input.c:413
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 ip_rcv+0xe8/0x3f0 net/ipv4/ip_input.c:523
 __netif_receive_skb_one_core+0x115/0x1a0 net/core/dev.c:4987
 __netif_receive_skb+0x2c/0x1c0 net/core/dev.c:5099
 netif_receive_skb_internal+0x117/0x660 net/core/dev.c:5202
 napi_frags_finish net/core/dev.c:5769 [inline]
 napi_gro_frags+0xade/0xd10 net/core/dev.c:5843
 tun_get_user+0x2f24/0x3fb0 drivers/net/tun.c:1981
 tun_chr_write_iter+0xbd/0x156 drivers/net/tun.c:2027
 call_write_iter include/linux/fs.h:1866 [inline]
 do_iter_readv_writev+0x5e1/0x8e0 fs/read_write.c:681
 do_iter_write fs/read_write.c:957 [inline]
 do_iter_write+0x184/0x610 fs/read_write.c:938
 vfs_writev+0x1b3/0x2f0 fs/read_write.c:1002
 do_writev+0x15e/0x370 fs/read_write.c:1037
 __do_sys_writev fs/read_write.c:1110 [inline]
 __se_sys_writev fs/read_write.c:1107 [inline]
 __x64_sys_writev+0x75/0xb0 fs/read_write.c:1107
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x447331
Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 07 fc ff c3 48 83 ec 08 e8 fa 2b 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 43 2c 00 00 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007f9f67e16d20 EFLAGS: 00000293 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00000000006dcc38 RCX: 0000000000447331
RDX: 0000000000000001 RSI: 00007f9f67e16d60 RDI: 00000000000000f0
RBP: 00000000006dcc30 R08: 0000000000000100 R09: 0000000000000013
R10: 000000000000214e R11: 0000000000000293 R12: 00000000006dcc3c
R13: 00007ffff16feccf R14: 00007f9f67e179c0 R15: 00000000006dcc3c
Modules linked in:
---[ end trace b508f47adb69b925 ]---
RIP: 0010:__lock_acquire+0xbef/0x3fb0 kernel/locking/lockdep.c:3573
Code: 00 0f 85 a5 1f 00 00 48 81 c4 10 01 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 4a 21 00 00 49 81 7d 00 20 54 9c 89 0f 84 cf f4
RSP: 0018:ffff8880a4606f58 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000026 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8880a4607090 R08: 0000000000000001 R09: 0000000000000001
R10: ffffed1015d25bc7 R11: ffff88808bea0680 R12: 0000000000000000
R13: 0000000000000130 R14: 0000000000000001 R15: 0000000000000001
FS:  00007f9f67e17700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004b6040 CR3: 00000000a8a9e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (35):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2019/04/23 13:33 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce 2019/04/23 13:25 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/04/23 13:13 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce-root 2019/04/23 11:55 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/04/23 11:45 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce 2019/04/23 11:37 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/04/23 11:23 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce-root 2019/04/23 10:44 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/04/23 10:35 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce 2019/04/23 09:58 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce-root 2019/04/23 09:57 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/04/23 09:11 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/04/23 08:06 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce-386 2019/04/23 12:30 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce-386 2019/04/23 10:15 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-kasan-gce-386 2019/04/23 09:26 upstream 085b7755808a 53199d6e .config log report syz C
ci-upstream-net-this-kasan-gce 2019/04/23 11:52 net acced9d2b4df 53199d6e .config log report syz C
ci-upstream-net-this-kasan-gce 2019/04/23 11:25 net acced9d2b4df 53199d6e .config log report syz C
ci-upstream-net-this-kasan-gce 2019/04/23 09:47 net acced9d2b4df 53199d6e .config log report syz C
ci-upstream-net-kasan-gce 2019/04/23 12:54 net-next be659b8d3c79 53199d6e .config log report syz C
ci-upstream-net-kasan-gce 2019/04/23 12:23 net-next be659b8d3c79 53199d6e .config log report syz C
ci-upstream-net-kasan-gce 2019/04/23 11:54 net-next be659b8d3c79 53199d6e .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/04/23 12:20 linux-next 3f018f4a019a 53199d6e .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/04/23 11:10 linux-next 3f018f4a019a 53199d6e .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/04/23 09:58 linux-next 3f018f4a019a 53199d6e .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/04/23 12:28 upstream 085b7755808a 53199d6e .config log report syz
ci-upstream-kasan-gce-selinux-root 2019/04/23 10:09 upstream 085b7755808a 53199d6e .config log report syz
ci-upstream-kasan-gce-386 2019/04/23 11:31 upstream 085b7755808a 53199d6e .config log report syz
ci-upstream-net-this-kasan-gce 2019/04/23 10:00 net acced9d2b4df 53199d6e .config log report syz
ci-upstream-net-kasan-gce 2019/04/23 11:14 net-next be659b8d3c79 53199d6e .config log report syz
ci-upstream-kasan-gce 2019/04/23 07:30 upstream 085b7755808a 53199d6e .config log report
ci-upstream-kasan-gce-smack-root 2019/04/23 07:30 upstream 085b7755808a 53199d6e .config log report
ci-upstream-kasan-gce-386 2019/04/23 07:32 upstream 085b7755808a 53199d6e .config log report
ci-upstream-net-this-kasan-gce 2019/04/24 20:18 net 1c5c12ee308a 8e3c52b1 .config log report
ci-upstream-net-kasan-gce 2019/04/23 07:30 net-next be659b8d3c79 53199d6e .config log report
* Struck through repros no longer work on HEAD.