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Date:   Sun, 14 May 2023 20:09:50 -0700
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Subject: Re: [syzbot] [crypto?] general protection fault in __aria_aesni_avx_gfni_crypt_16way
From:   syzbot <syzbot+a6abcf08bad8b18fd198@syzkaller.appspotmail.com>
To:     bp@alien8.de, dave.hansen@linux.intel.com, davem@davemloft.net,
        herbert@gondor.apana.org.au, hpa@zytor.com,
        linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
        mingo@redhat.com, syzkaller-bugs@googlegroups.com,
        tglx@linutronix.de, x86@kernel.org
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Precedence: bulk

syzbot has found a reproducer for the following issue on:

HEAD commit:    31f4104e392a Merge tag 'locking_urgent_for_v6.4_rc2' of gi..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=11768616280000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8bc832f563d8bf38
dashboard link: https://syzkaller.appspot.com/bug?extid=a6abcf08bad8b18fd198
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: i386
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1737e3be280000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=149d4c06280000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-31f4104e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/967f88e07e18/vmlinux-31f4104e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b4e92e4df24e/bzImage-31f4104e.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a6abcf08bad8b18fd198@syzkaller.appspotmail.com

general protection fault, maybe for address 0xffffffff8c12a198: 0000 [#1] PREEMPT SMP KASAN
CPU: 2 PID: 5136 Comm: syz-executor269 Not tainted 6.4.0-rc1-syzkaller-00190-g31f4104e392a #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:__aria_aesni_avx_gfni_crypt_16way+0x2a6/0x4f40 arch/x86/crypto/aria-aesni-avx-asm_64.S:1164
Code: d0 10 c4 e2 69 00 d7 c5 11 ef ea c5 e9 72 d0 08 c4 e2 69 00 d7 c5 09 ef f2 c4 e2 79 00 d7 c5 01 ef fa c5 f9 6f 05 7a 15 c9 0a <c5> f9 6f 0d 6a 15 c9 0a c5 f9 6f 15 7a 15 c9 0a c5 f9 6f 1d 52 15
RSP: 0018:ffffc9000384f210 EFLAGS: 00010286
RAX: ffff888026364890 RBX: 0000000000000000 RCX: ffff888026364890
RDX: ffff888026364890 RSI: ffff888026364890 RDI: ffff888023c79028
RBP: ffff88801fb3c900 R08: ffff888026364910 R09: ffff888023c79028
R10: ffff88801fb3c800 R11: ffff88801fb3c800 R12: ffff88801fb3c900
R13: ffff888023c79028 R14: dffffc0000000000 R15: ffff888026364890
FS:  0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:0000000056fc72c0
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007f29a06956a8 CR3: 000000001f222000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 aria_aesni_avx_gfni_ctr_crypt_16way+0x1d/0x110 arch/x86/crypto/aria-aesni-avx-asm_64.S:1339
 aria_avx_ctr_encrypt+0x180/0x680 arch/x86/crypto/aria_aesni_avx_glue.c:103
 crypto_skcipher_encrypt+0xbc/0x100 crypto/skcipher.c:653
 crypto_skcipher_encrypt+0xbc/0x100 crypto/skcipher.c:653
 crypto_gcm_encrypt+0x393/0x4b0 crypto/gcm.c:459
 crypto_aead_encrypt+0xbc/0x100 crypto/aead.c:121
 tls_do_encryption net/tls/tls_sw.c:544 [inline]
 tls_push_record+0x12d8/0x30f0 net/tls/tls_sw.c:777
 bpf_exec_tx_verdict+0xdf0/0x1210 net/tls/tls_sw.c:817
 tls_sw_sendmsg+0x100b/0x1850 net/tls/tls_sw.c:1033
 inet6_sendmsg+0x9d/0xe0 net/ipv6/af_inet6.c:651
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg+0xde/0x190 net/socket.c:747
 sock_write_iter+0x295/0x3d0 net/socket.c:1140
 call_write_iter include/linux/fs.h:1868 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x945/0xd50 fs/read_write.c:584
 ksys_write+0x1ec/0x250 fs/read_write.c:637
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7f45579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000ff8f022c EFLAGS: 00000246 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000580
RDX: 0000000000000278 RSI: 00000000f7fe8000 RDI: 0000000000000000
RBP: 00000000ff8f0290 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__aria_aesni_avx_gfni_crypt_16way+0x2a6/0x4f40 arch/x86/crypto/aria-aesni-avx-asm_64.S:1164
Code: d0 10 c4 e2 69 00 d7 c5 11 ef ea c5 e9 72 d0 08 c4 e2 69 00 d7 c5 09 ef f2 c4 e2 79 00 d7 c5 01 ef fa c5 f9 6f 05 7a 15 c9 0a <c5> f9 6f 0d 6a 15 c9 0a c5 f9 6f 15 7a 15 c9 0a c5 f9 6f 1d 52 15
RSP: 0018:ffffc9000384f210 EFLAGS: 00010286
RAX: ffff888026364890 RBX: 0000000000000000 RCX: ffff888026364890
RDX: ffff888026364890 RSI: ffff888026364890 RDI: ffff888023c79028
RBP: ffff88801fb3c900 R08: ffff888026364910 R09: ffff888023c79028
R10: ffff88801fb3c800 R11: ffff88801fb3c800 R12: ffff88801fb3c900
R13: ffff888023c79028 R14: dffffc0000000000 R15: ffff888026364890
FS:  0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:0000000056fc72c0
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007f29a06956a8 CR3: 000000001f222000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	d0 10                	rclb   (%rax)
   2:	c4 e2 69 00 d7       	vpshufb %xmm7,%xmm2,%xmm2
   7:	c5 11 ef ea          	vpxor  %xmm2,%xmm13,%xmm13
   b:	c5 e9 72 d0 08       	vpsrld $0x8,%xmm0,%xmm2
  10:	c4 e2 69 00 d7       	vpshufb %xmm7,%xmm2,%xmm2
  15:	c5 09 ef f2          	vpxor  %xmm2,%xmm14,%xmm14
  19:	c4 e2 79 00 d7       	vpshufb %xmm7,%xmm0,%xmm2
  1e:	c5 01 ef fa          	vpxor  %xmm2,%xmm15,%xmm15
  22:	c5 f9 6f 05 7a 15 c9 	vmovdqa 0xac9157a(%rip),%xmm0        # 0xac915a4
  29:	0a
* 2a:	c5 f9 6f 0d 6a 15 c9 	vmovdqa 0xac9156a(%rip),%xmm1        # 0xac9159c <-- trapping instruction
  31:	0a
  32:	c5 f9 6f 15 7a 15 c9 	vmovdqa 0xac9157a(%rip),%xmm2        # 0xac915b4
  39:	0a
  3a:	c5                   	.byte 0xc5
  3b:	f9                   	stc
  3c:	6f                   	outsl  %ds:(%rsi),(%dx)
  3d:	1d                   	.byte 0x1d
  3e:	52                   	push   %rdx
  3f:	15                   	.byte 0x15


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