syzbot


kmsan boot error: KMSAN: uninit-value in number

Status: auto-closed as invalid on 2022/03/02 10:49
Reported-by: syzbot+@syzkaller.appspotmail.com
First crash: 439d, last: 369d
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kmsan boot error: KMSAN: uninit-value in number (2) 1 227d 227d 0/24 auto-closed as invalid on 2022/07/21 15:17

Sample crash report:
=====================================================
BUG: KMSAN: uninit-value in number+0xd27/0x24c0 lib/vsprintf.c:490
 number+0xd27/0x24c0 lib/vsprintf.c:490
 vsnprintf+0x1f3a/0x36a0 lib/vsprintf.c:2871
 snprintf+0x244/0x290 lib/vsprintf.c:2938
 tomoyo_print_header security/tomoyo/audit.c:165 [inline]
 tomoyo_init_log+0xd3e/0x3b50 security/tomoyo/audit.c:255
 tomoyo_supervisor+0x8bd/0x2840 security/tomoyo/common.c:2097
 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
 tomoyo_path_permission security/tomoyo/file.c:587 [inline]
 tomoyo_check_open_permission+0x72b/0xe10 security/tomoyo/file.c:777
 tomoyo_file_open+0x24f/0x2d0 security/tomoyo/tomoyo.c:311
 security_file_open+0xb1/0x1f0 security/security.c:1635
 do_dentry_open+0x4e4/0x1bf0 fs/open.c:809
 vfs_open+0xaf/0xe0 fs/open.c:957
 do_open fs/namei.c:3426 [inline]
 path_openat+0x52f1/0x5dd0 fs/namei.c:3559
 do_filp_open+0x306/0x760 fs/namei.c:3586
 do_sys_openat2+0x263/0x8f0 fs/open.c:1212
 do_sys_open fs/open.c:1228 [inline]
 __do_sys_open fs/open.c:1236 [inline]
 __se_sys_open fs/open.c:1232 [inline]
 __x64_sys_open+0x314/0x380 fs/open.c:1232
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Local variable tmp created at:
 number+0xb2/0x24c0 lib/vsprintf.c:453
 vsnprintf+0x1f3a/0x36a0 lib/vsprintf.c:2871
=====================================================

Crashes (8):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kmsan-gce 2021/12/01 22:13 https://github.com/google/kmsan.git master 8a9a0e64b453 61f86278 .config log report kmsan boot error: KMSAN: uninit-value in number
ci-upstream-kmsan-gce 2021/11/29 14:50 https://github.com/google/kmsan.git master fd15afa4c7d6 d0830353 .config log report kmsan boot error: KMSAN: uninit-value in number
ci-upstream-kmsan-gce 2021/11/25 12:44 https://github.com/google/kmsan.git master a535b0caaa2f 545ab074 .config log report kmsan boot error: KMSAN: uninit-value in number
ci-upstream-kmsan-gce 2021/11/25 12:44 https://github.com/google/kmsan.git master a535b0caaa2f 545ab074 .config log report kmsan boot error: KMSAN: uninit-value in number
ci-upstream-kmsan-gce-386 2021/12/02 10:45 https://github.com/google/kmsan.git master 9eaa7c56e1c5 61f86278 .config log report kmsan boot error: KMSAN: uninit-value in number
ci-upstream-kmsan-gce-386 2021/11/29 15:08 https://github.com/google/kmsan.git master fd15afa4c7d6 d0830353 .config log report kmsan boot error: KMSAN: uninit-value in number
ci-upstream-kmsan-gce-386 2021/11/13 05:56 https://github.com/google/kmsan.git master 386004877847 83f5c9b5 .config log report kmsan boot error: KMSAN: uninit-value in number
ci-upstream-kmsan-gce-386 2021/09/22 16:56 https://github.com/google/kmsan.git master c9006efa1749 169724fe .config log report kmsan boot error: KMSAN: uninit-value in number
* Struck through repros no longer work on HEAD.