syzbot


kernel panic: MAC Initialization failed. (2)

Status: closed as dup on 2019/02/28 10:11
Reported-by: syzbot+29569ed06425fcf67a95@syzkaller.appspotmail.com
Fix commit: e80b18599a39 tomoyo: Add a kernel config option for fuzzing testing.
First crash: 1263d, last: 1262d
Duplicate of (1):
Title Repro Cause bisect Fix bisect Count Last Reported
kernel panic: MAC Initialization failed. C 4 1263d 1263d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel panic: MAC Initialization failed. (3) C done 799 1188d 1262d 9/23 fixed on 2019/06/11 09:53
upstream kernel panic: MAC Initialization failed. C 4 1263d 1263d 0/23 closed as invalid on 2019/02/27 22:37

Sample crash report:
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..

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2019/02/28 04:30 linux-next 7b827ff9af88 34ec456b .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/02/28 03:34 linux-next 7b827ff9af88 34ec456b .config log report