syzbot


BUG: unable to handle kernel paging request in hmac_init_tfm

Status: closed as invalid on 2018/01/30 21:41
Subsystems: crypto
[Documentation on labels]
Reported-by: syzbot+428944d1a848e9d7464aa96da32ba353cc812457@syzkaller.appspotmail.com
First crash: 2602d, last: 2602d

Sample crash report:
BUG: unable to handle kernel paging request at ffff8802dca4f748
IP: hmac_init_tfm+0x5d/0x90 crypto/hmac.c:169
PGD 404e067 P4D 404e067 PUD 0 
Oops: 0002 [#1] SMP
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 6418 Comm: syz-executor5 Not tainted 4.15.0-rc3-next-20171214+ #67
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hmac_init_tfm+0x5d/0x90 crypto/hmac.c:169
RSP: 0018:ffffc90000f77df8 EFLAGS: 00010202
RAX: 0000000000000068 RBX: ffff8801dca52308 RCX: ffffffff816847d3
RDX: 00000000000005d6 RSI: ffffc90004d7e000 RDI: ffff8802143cc708
RBP: ffffc90000f77e10 R08: 000000000002bcf8 R09: ffff8802143cc700
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8802143cc700
R13: ffff8802dca4f748 R14: ffff8801e0a96c50 R15: ffffc90000f77ed0
FS:  00007fecf7c1a700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8802dca4f748 CR3: 00000001e47f4000 CR4: 00000000001406e0
DR0: 0000000020000008 DR1: 0000000020000008 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 crypto_create_tfm+0xb4/0x120 crypto/api.c:466
 crypto_alloc_tfm+0x82/0x180 crypto/api.c:540
 crypto_alloc_shash+0x2c/0x40 crypto/shash.c:436
 sctp_listen_start net/sctp/socket.c:7496 [inline]
 sctp_inet_listen+0x1c1/0x240 net/sctp/socket.c:7584
 SYSC_listen net/socket.c:1483 [inline]
 SyS_listen+0x71/0xb0 net/socket.c:1469
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a39
RSP: 002b:00007fecf7c19c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000032
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 0000000000000000 RSI: 0000000000000ae0 RDI: 000000000000001b
RBP: 00000000000000e8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ef660
R13: 00000000ffffffff R14: 00007fecf7c1a6d4 R15: 0000000000000000
Code: ff 01 c0 4c 8d 6c 02 07 e8 a1 22 ff ff 49 83 e5 f8 48 3d 00 f0 ff ff 49 89 c4 77 25 e8 6d 5b c3 ff 41 8b 04 24 83 c0 10 89 43 f8 <4d> 89 65 00 45 31 e4 e8 57 5b c3 ff 44 89 e0 5b 41 5c 41 5d 5d 
RIP: hmac_init_tfm+0x5d/0x90 crypto/hmac.c:169 RSP: ffffc90000f77df8
CR2: ffff8802dca4f748
---[ end trace ec6d3df7509d0a3b ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2017/12/14 18:57 linux-next 6084b576dca2 ac20b98c .config console log report ci-upstream-next-kasan-gce
* Struck through repros no longer work on HEAD.