kernel panic: MAC Initialization failed. (2)
From: syzbot <hidden>
Date: 2019-02-28 06:42:07
Hello, syzbot found the following crash on: HEAD commit: 7b827ff9af88 Add linux-next specific files for 20190227 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=10f71894c00000 kernel config: https://syzkaller.appspot.com/x/.config?x=5fa6b8975759dcc5 dashboard link: https://syzkaller.appspot.com/bug?extid=29569ed06425fcf67a95 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=113a8242c00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154d6bd0c00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+29569ed06425fcf67a95@syzkaller.appspotmail.com Code: e8 0c ad 02 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffca1453958 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000440ff9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007ffca1453970 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000 ERROR: Out of memory at tomoyo_realpath_from_path. Kernel panic - not syncing: MAC Initialization failed. CPU: 0 PID: 7505 Comm: syz-executor695 Not tainted 5.0.0-rc8-next-20190227 #44 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x65c kernel/panic.c:214 tomoyo_warn_oom.cold+0x35/0x43 security/tomoyo/memory.c:28 tomoyo_realpath_from_path+0x3a8/0x730 security/tomoyo/realpath.c:320 tomoyo_realpath_nofollow+0xc8/0xdb security/tomoyo/realpath.c:336 tomoyo_find_next_domain+0x28c/0x1f8a security/tomoyo/domain.c:725 tomoyo_bprm_check_security security/tomoyo/tomoyo.c:107 [inline] tomoyo_bprm_check_security+0x12a/0x1b0 security/tomoyo/tomoyo.c:97 security_bprm_check+0x69/0xb0 security/security.c:751 search_binary_handler+0x77/0x570 fs/exec.c:1644 exec_binprm fs/exec.c:1698 [inline] __do_execve_file.isra.0+0x1394/0x23f0 fs/exec.c:1818 do_execveat_common fs/exec.c:1865 [inline] do_execve fs/exec.c:1882 [inline] __do_sys_execve fs/exec.c:1958 [inline] __se_sys_execve fs/exec.c:1953 [inline] __x64_sys_execve+0x8f/0xc0 fs/exec.c:1953 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440ff9 Code: e8 0c ad 02 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffca1453958 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000440ff9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007ffca1453970 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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