general protection fault in blkcipher_walk_done
From: syzbot <hidden>
Date: 2017-11-27 18:56:56
Also in:
lkml
Hello, syzkaller hit the following crash on 1ea8d039f9edcfefb20d8ddfe136930f6e551529 git://git.cmpxchg.org/linux-mmots.git/master compiler: gcc (GCC) 7.1.1 20170620 .config is attached Raw console output is attached. C reproducer is attached syzkaller reproducer is attached. See https://goo.gl/kgGztJ for information about syzkaller reproducers 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: 0 PID: 3459 Comm: syzkaller843837 Not tainted 4.14.0-mm1+ #25 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801bfe7e0c0 task.stack: ffff8801c01f8000 RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:86 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RIP: 0010:scatterwalk_done include/crypto/scatterwalk.h:119 [inline] RIP: 0010:blkcipher_walk_done+0x447/0xde0 crypto/blkcipher.c:125 RSP: 0018:ffff8801c01ff6f0 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 00000000000003ef RCX: ffff8801c01ff7e0 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000008 RBP: ffff8801c01ff740 R08: ffffed00372e1e02 R09: 0000000000000010 R10: 0000000000000000 R11: ffffed00372e1e01 R12: ffff8801c01ff8b8 R13: ffff8801c01ff7a0 R14: ffff8801c01ff7e8 R15: ffff8801c0189110 FS: 00007f4f6c774700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020c13000 CR3: 00000001d9ef0000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skcipher_null_crypt+0x1da/0x2d0 crypto/crypto_null.c:91 skcipher_crypt_blkcipher crypto/skcipher.c:619 [inline] skcipher_encrypt_blkcipher+0x213/0x310 crypto/skcipher.c:628 crypto_skcipher_encrypt include/crypto/skcipher.h:445 [inline] crypto_aead_copy_sgl crypto/algif_aead.c:90 [inline] _aead_recvmsg crypto/algif_aead.c:210 [inline] aead_recvmsg+0x7db/0x1970 crypto/algif_aead.c:313 aead_recvmsg_nokey+0x60/0x80 crypto/algif_aead.c:431 sock_recvmsg_nosec net/socket.c:805 [inline] sock_recvmsg+0xc9/0x110 net/socket.c:812 ___sys_recvmsg+0x29b/0x630 net/socket.c:2207 __sys_recvmsg+0xe2/0x210 net/socket.c:2252 SYSC_recvmsg net/socket.c:2264 [inline] SyS_recvmsg+0x2d/0x50 net/socket.c:2259 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4463e9 RSP: 002b:00007f4f6c773dc8 EFLAGS: 00000202 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004463e9 RDX: 0000000000002103 RSI: 0000000020709fc8 RDI: 0000000000000008 RBP: 0000000000000086 R08: 00007f4f6c774700 R09: 00007f4f6c774700 R10: 00007f4f6c774700 R11: 0000000000000202 R12: 0000000000000000 R13: 00007ffd952b0bbf R14: 00007f4f6c7749c0 R15: 0000000000000000 Code: c8 48 89 f7 48 c1 ef 03 80 3c 17 00 0f 85 53 08 00 00 48 8d 78 08 48 ba 00 00 00 00 00 fc ff df 49 89 45 38 48 89 fe 48 c1 ee 03 <0f> b6 14 16 84 d2 74 09 80 fa 03 0f 8e 37 07 00 00 48 89 ca 44 RIP: scatterwalk_start include/crypto/scatterwalk.h:86 [inline] RSP: ffff8801c01ff6f0 RIP: scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RSP: ffff8801c01ff6f0 RIP: scatterwalk_done include/crypto/scatterwalk.h:119 [inline] RSP: ffff8801c01ff6f0 RIP: blkcipher_walk_done+0x447/0xde0 crypto/blkcipher.c:125 RSP: ffff8801c01ff6f0 ---[ end trace b86792643e54649a ]--- kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#2] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 3585 Comm: syzkaller843837 Tainted: G D 4.14.0-mm1+ #25 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801ca904240 task.stack: ffff8801cb1f8000 RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:86 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RIP: 0010:scatterwalk_done include/crypto/scatterwalk.h:119 [inline] RIP: 0010:blkcipher_walk_done+0x447/0xde0 crypto/blkcipher.c:125 RSP: 0018:ffff8801cb1ff6f0 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 00000000000003ef RCX: ffff8801cb1ff7e0 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000008 RBP: ffff8801cb1ff740 R08: ffffed00374e1e02 R09: 0000000000000010 R10: 0000000000000000 R11: ffffed00374e1e01 R12: ffff8801cb1ff8b8 R13: ffff8801cb1ff7a0 R14: ffff8801cb1ff7e8 R15: ffff8801cad38ad0 FS: 00007f4f6075c700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4f67769e78 CR3: 00000001d83fb000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skcipher_null_crypt+0x1da/0x2d0 crypto/crypto_null.c:91 skcipher_crypt_blkcipher crypto/skcipher.c:619 [inline] skcipher_encrypt_blkcipher+0x213/0x310 crypto/skcipher.c:628 crypto_skcipher_encrypt include/crypto/skcipher.h:445 [inline] crypto_aead_copy_sgl crypto/algif_aead.c:90 [inline] _aead_recvmsg crypto/algif_aead.c:210 [inline] aead_recvmsg+0x7db/0x1970 crypto/algif_aead.c:313 aead_recvmsg_nokey+0x60/0x80 crypto/algif_aead.c:431 sock_recvmsg_nosec net/socket.c:805 [inline] sock_recvmsg+0xc9/0x110 net/socket.c:812 ___sys_recvmsg+0x29b/0x630 net/socket.c:2207 __sys_recvmsg+0xe2/0x210 net/socket.c:2252 SYSC_recvmsg net/socket.c:2264 [inline] SyS_recvmsg+0x2d/0x50 net/socket.c:2259 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4463e9 RSP: 002b:00007f4f6075bdc8 EFLAGS: 00000202 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004463e9 RDX: 0000000000002103 RSI: 0000000020709fc8 RDI: 000000000000000e RBP: 00007ffd952b0bc0 R08: 00007f4f6075c700 R09: 00007f4f6075c700 R10: 00007f4f6075c700 R11: 0000000000000202 R12: 0000000000000000 R13: 00007ffd952b0bbf R14: 00007f4f6075c9c0 R15: 0000000000000000 Code: c8 48 89 f7 48 c1 ef 03 80 3c 17 00 0f 85 53 08 00 00 48 8d 78 08 48 ba 00 00 00 00 00 fc ff df 49 89 45 38 48 89 fe 48 c1 ee 03 <0f> b6 14 16 84 d2 74 09 80 fa 03 0f 8e 37 07 00 00 48 89 ca 44 RIP: scatterwalk_start include/crypto/scatterwalk.h:86 [inline] RSP: ffff8801cb1ff6f0 RIP: scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RSP: ffff8801cb1ff6f0 RIP: scatterwalk_done include/crypto/scatterwalk.h:119 [inline] RSP: ffff8801cb1ff6f0 RIP: blkcipher_walk_done+0x447/0xde0 crypto/blkcipher.c:125 RSP: ffff8801cb1ff6f0 ---[ end trace b86792643e54649b ]--- --- This bug is generated by a dumb bot. It may contain errors. See https://goo.gl/tpsmEJ for details. Direct all questions to syzkaller@googlegroups.com. Please credit me with: Reported-by: syzbot [off-list ref] syzbot will keep track of this bug report. Once a fix for this bug is committed, please reply to this email with: #syz fix: exact-commit-title If you want to test a patch for this bug, please reply with: #syz test: git://repo/address.git branch and provide the patch inline or as an attachment. To mark this as a duplicate of another syzbot report, please reply with: #syz dup: exact-subject-of-another-report If it's a one-off invalid bug report, please reply with: #syz invalid Note: if the crash happens again, it will cause creation of a new bug report. Note: all commands must start from beginning of the line in the email body.