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possible deadlock (2)

Status: fixed on 2018/01/03 02:35
Subsystems: crypto
[Documentation on labels]
Fix commit: 2b4f27c36bcd crypto: skcipher - set walk.iv for zero-length inputs
First crash: 2319d, last: 2317d
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-44 possible deadlock 3 2268d 2269d 0/2 auto-closed as invalid on 2019/02/22 12:31
upstream possible deadlock (3) C 2 2289d 2289d 0/26 closed as invalid on 2018/01/10 08:57
android-49 possible deadlock 11 2263d 2306d 0/3 auto-closed as invalid on 2019/02/22 14:55
upstream possible deadlock (4) C 19 2267d 2284d 0/26 closed as dup on 2018/01/15 08:48
upstream possible deadlock 1 2343d 2343d 0/26 closed as invalid on 2017/11/18 10:19

Sample crash report:
======================================================
WARNING: possible circular locking dependency detected
4.15.0-rc3+ #219 Not tainted
------------------------------------------------------
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 9634 Comm: syz-executor6 Not tainted 4.15.0-rc3+ #219
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__le32_to_cpup include/uapi/linux/byteorder/little_endian.h:58 [inline]
RIP: 0010:le32_to_cpuvp crypto/chacha20_generic.c:19 [inline]
RIP: 0010:crypto_chacha20_init crypto/chacha20_generic.c:58 [inline]
RIP: 0010:crypto_chacha20_crypt+0x537/0xbd0 crypto/chacha20_generic.c:91
RSP: 0018:ffff8801c89e74a0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 00000000e6000000 RCX: ffffffff8226b75b
RDX: 0000000000000000 RSI: ffffc900018b0000 RDI: ffff8801c89e753c
RBP: ffff8801c89e76c0 R08: ffffed0039e915f4 R09: ffff8801cf48af80
R10: ffff8801c89e76e0 R11: ffffed0039e915f3 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f7a73677700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7a73634000 CR3: 00000001bba41000 CR4: 00000000001426e0
DR0: 0000000020001020 DR1: 0000000020000000 DR2: 0000000020001020
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 chacha20_simd+0xe4/0x410 arch/x86/crypto/chacha20_glue.c:78
 crypto_skcipher_decrypt include/crypto/skcipher.h:463 [inline]
 _skcipher_recvmsg crypto/algif_skcipher.c:126 [inline]
 skcipher_recvmsg+0x739/0xf20 crypto/algif_skcipher.c:165
 sock_recvmsg_nosec net/socket.c:809 [inline]
 sock_recvmsg+0xc9/0x110 net/socket.c:816
 sock_read_iter+0x361/0x560 net/socket.c:893
 call_read_iter include/linux/fs.h:1766 [inline]
 aio_read+0x2b0/0x3a0 fs/aio.c:1501
 io_submit_one fs/aio.c:1611 [inline]
 do_io_submit+0xf99/0x14f0 fs/aio.c:1682
 SYSC_io_submit fs/aio.c:1707 [inline]
 SyS_io_submit+0x27/0x30 fs/aio.c:1704
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a39
RSP: 002b:00007f7a73676c58 EFLAGS: 00000212 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 0000000020738000 RSI: 0000000000000002 RDI: 00007f7a73634000
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee0b8
R13: 00000000ffffffff R14: 00007f7a736776d4 R15: 0000000000000000
Code: 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 d6 05 00 00 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 89 9d 7c fe ff ff 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 
RIP: __le32_to_cpup include/uapi/linux/byteorder/little_endian.h:58 [inline] RSP: ffff8801c89e74a0
RIP: le32_to_cpuvp crypto/chacha20_generic.c:19 [inline] RSP: ffff8801c89e74a0
RIP: crypto_chacha20_init crypto/chacha20_generic.c:58 [inline] RSP: ffff8801c89e74a0
RIP: crypto_chacha20_crypt+0x537/0xbd0 crypto/chacha20_generic.c:91 RSP: ffff8801c89e74a0
---[ end trace 24cc5ceef85b0ef4 ]---

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2017/12/13 12:12 upstream d39a01eff9af ce7f2399 .config console log report ci-upstream-kasan-gce
2017/12/11 11:22 upstream 50c4c4e268a2 5ad0ce95 .config console log report ci-upstream-kasan-gce
* Struck through repros no longer work on HEAD.