From mboxrd@z Thu Jan 1 00:00:00 1970 From: syzbot Date: Sat, 03 Nov 2018 15:48:03 +0000 Subject: general protection fault in keyctl_pkey_params_get Message-Id: <000000000000c220960579c4936d@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset="windows-1250" Content-Transfer-Encoding: base64 List-Id: To: dhowells@redhat.com, jmorris@namei.org, keyrings@vger.kernel.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, serge@hallyn.com, syzkaller-bugs@googlegroups.com SGVsbG8sCgpzeXpib3QgZm91bmQgdGhlIGZvbGxvd2luZyBjcmFzaCBvbjoKCkhFQUQgY29tbWl0 OiAgICA1ZjIxNTg1Mzg0YTQgTWVyZ2UgdGFnICdmb3ItbGludXMtMjAxODExMDInIG9mIGdpdDov L2dpdC5rLi4KZ2l0IHRyZWU6ICAgICAgIHVwc3RyZWFtCmNvbnNvbGUgb3V0cHV0OiBodHRwczov L3N5emthbGxlci5hcHBzcG90LmNvbS94L2xvZy50eHQ/eBBiYTI0NmQ0MDAwMDAKa2VybmVsIGNv bmZpZzogIGh0dHBzOi8vc3l6a2FsbGVyLmFwcHNwb3QuY29tL3gvLmNvbmZpZz94kzg0ZWNiMWM5 NzNiYWVkCmRhc2hib2FyZCBsaW5rOiBodHRwczovL3N5emthbGxlci5hcHBzcG90LmNvbS9idWc/ 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2018 08:48:03 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c220960579c4936d@google.com> Subject: general protection fault in keyctl_pkey_params_get From: syzbot To: dhowells@redhat.com, jmorris@namei.org, keyrings@vger.kernel.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, serge@hallyn.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: Hello, syzbot found the following crash on: HEAD commit: 5f21585384a4 Merge tag 'for-linus-20181102' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10ba246d400000 kernel config: https://syzkaller.appspot.com/x/.config?x=9384ecb1c973baed dashboard link: https://syzkaller.appspot.com/bug?extid=a22e0dc07567662c50bc compiler: gcc (GCC) 8.0.1 20180413 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1026dcd5400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=167e882b400000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+a22e0dc07567662c50bc@syzkaller.appspotmail.com 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: 7247 Comm: syz-executor236 Not tainted 4.19.0+ #317 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:keyctl_pkey_params_parse security/keys/keyctl_pkey.c:56 [inline] RIP: 0010:keyctl_pkey_params_get+0x2e7/0x550 security/keys/keyctl_pkey.c:96 Code: fe 48 8b 44 24 38 48 c1 e8 03 42 80 3c 28 00 0f 85 f7 01 00 00 4c 8b a4 24 e0 00 00 00 4c 89 e0 4c 89 e2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 e0 01 00 00 41 0f b6 04 24 RSP: 0018:ffff8801ce84faa0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801ce84fd60 RCX: ffffffff83429990 RDX: 0000000000000000 RSI: ffffffff8342999e RDI: 0000000000000001 RBP: ffff8801ce84fc08 R08: ffff8801ce928480 R09: ffffed0039e73310 R10: ffffed0039e73310 R11: 0000000000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffffffffffff R15: ffffffffffffffff FS: 0000000001e1c880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000414cd0 CR3: 00000001ce5e6000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: keyctl_pkey_params_get_2+0x12f/0x580 security/keys/keyctl_pkey.c:130 kasan: CONFIG_KASAN_INLINE enabled keyctl_pkey_verify+0xaa/0x400 security/keys/keyctl_pkey.c:293 kasan: GPF could be caused by NULL-ptr deref or user memory access __do_sys_keyctl security/keys/keyctl.c:1768 [inline] __se_sys_keyctl security/keys/keyctl.c:1637 [inline] __x64_sys_keyctl+0x101/0x430 security/keys/keyctl.c:1637 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x444c39 Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ce fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffefdd59f88 EFLAGS: 00000286 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000444c39 RDX: 00000000200002c0 RSI: 00000000200000c0 RDI: 000000000000001c RBP: 0000000000000000 R08: 0000000020000380 R09: 00000000004002e0 R10: 00000000fffffd2a R11: 0000000000000286 R12: 0000000000011956 R13: 0000000000401f80 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace e5c46bb5200c69dc ]--- general protection fault: 0000 [#2] PREEMPT SMP KASAN RIP: 0010:keyctl_pkey_params_parse security/keys/keyctl_pkey.c:56 [inline] RIP: 0010:keyctl_pkey_params_get+0x2e7/0x550 security/keys/keyctl_pkey.c:96 CPU: 0 PID: 7401 Comm: syz-executor236 Tainted: G D 4.19.0+ #317 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:keyctl_pkey_params_parse security/keys/keyctl_pkey.c:56 [inline] RIP: 0010:keyctl_pkey_params_get+0x2e7/0x550 security/keys/keyctl_pkey.c:96 Code: fe 48 8b 44 24 38 48 c1 e8 03 42 80 3c 28 00 0f 85 f7 01 00 00 4c 8b a4 24 e0 00 00 00 4c 89 e0 4c 89 e2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 e0 01 00 00 41 0f b6 04 24 Code: fe 48 8b 44 24 38 48 c1 e8 03 42 80 3c 28 00 0f 85 f7 01 00 00 4c 8b a4 24 e0 00 00 00 4c 89 e0 4c 89 e2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 e0 01 00 00 41 0f b6 04 24 RSP: 0018:ffff8801c52cfaa0 EFLAGS: 00010246 RAX: 0000000000000002 RBX: ffff8801c52cfd60 RCX: ffffffff83429990 RDX: 0000000000000000 RSI: ffffffff8342999e RDI: 0000000000000001 RBP: ffff8801c52cfc08 R08: ffff8801b8a86000 R09: ffffed0039bb1378 R10: ffffed0039bb1378 R11: 0000000000000001 R12: 0000000000000010 R13: dffffc0000000000 R14: ffffffffffffffff R15: ffffffffffffffff FS: 0000000001e1c880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RSP: 0018:ffff8801ce84faa0 EFLAGS: 00010246 CR2: 0000000000414cd0 CR3: 00000001ce654000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: RAX: 0000000000000000 RBX: ffff8801ce84fd60 RCX: ffffffff83429990 keyctl_pkey_params_get_2+0x12f/0x580 security/keys/keyctl_pkey.c:130 RDX: 0000000000000000 RSI: ffffffff8342999e RDI: 0000000000000001 keyctl_pkey_verify+0xaa/0x400 security/keys/keyctl_pkey.c:293 RBP: ffff8801ce84fc08 R08: ffff8801ce928480 R09: ffffed0039e73310 R10: ffffed0039e73310 R11: 0000000000000001 R12: 0000000000000000 __do_sys_keyctl security/keys/keyctl.c:1768 [inline] __se_sys_keyctl security/keys/keyctl.c:1637 [inline] __x64_sys_keyctl+0x101/0x430 security/keys/keyctl.c:1637 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 R13: dffffc0000000000 R14: ffffffffffffffff R15: ffffffffffffffff FS: 0000000001e1c880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 entry_SYSCALL_64_after_hwframe+0x49/0xbe CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RIP: 0033:0x444c39 Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b ce fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffefdd59f88 EFLAGS: 00000286 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000444c39 RDX: 00000000200002c0 RSI: 00000000200000c0 RDI: 000000000000001c RBP: 0000000000000000 R08: 0000000020000380 R09: 00000000004002e0 R10: 00000000fffffd2a R11: 0000000000000286 R12: 0000000000011a27 CR2: 0000000000414cd0 CR3: 00000001ce5e6000 CR4: 00000000001406e0 R13: 0000000000401f80 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace e5c46bb5200c69dd ]--- DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 RIP: 0010:keyctl_pkey_params_parse security/keys/keyctl_pkey.c:56 [inline] RIP: 0010:keyctl_pkey_params_get+0x2e7/0x550 security/keys/keyctl_pkey.c:96 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Code: fe 48 8b 44 24 38 48 c1 e8 03 42 80 3c 28 00 0f 85 f7 01 00 00 4c 8b a4 24 e0 00 00 00 4c 89 e0 4c 89 e2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 e0 01 00 00 41 0f b6 04 24 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches