syzbot

 sign-in | mailing list | source | docs
🐞 Open [985] ≡ Subsystems 🐞 Fixed [5216] 🐞 Invalid [12474] ⬇ Missing Backports [82] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes 💬 Send us feedback

KMSAN: uninit-value in devkmsg_read

Status: auto-obsoleted due to no activity on 2023/01/14 11:53
Subsystems: fs
[Documentation on labels]
First crash: 938d, last: 858d
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2023/01/02 00:31 23m retest repro https://github.com/google/kmsan.git master OK log
2023/01/01 07:31 23m retest repro https://github.com/google/kmsan.git master OK log
2023/01/01 03:31 24m retest repro https://github.com/google/kmsan.git master OK log
2022/12/11 15:31 23m retest repro https://github.com/google/kmsan.git master OK log
2022/09/26 18:30 20m retest repro https://github.com/google/kmsan.git master OK log
2022/09/26 16:30 20m retest repro https://github.com/google/kmsan.git master OK log
2022/09/26 13:30 19m retest repro https://github.com/google/kmsan.git master OK log
2022/09/26 11:30 19m retest repro https://github.com/google/kmsan.git master OK log
2022/09/26 09:30 19m retest repro https://github.com/google/kmsan.git master OK log
2022/09/26 07:30 19m retest repro https://github.com/google/kmsan.git master OK log

Sample crash report:
=====================================================
BUG: KMSAN: uninit-value in check_pointer lib/vsprintf.c:705 [inline]
BUG: KMSAN: uninit-value in string+0x3d2/0x700 lib/vsprintf.c:717
 check_pointer lib/vsprintf.c:705 [inline]
 string+0x3d2/0x700 lib/vsprintf.c:717
 vsnprintf+0x224f/0x36a0 lib/vsprintf.c:2805
 vscnprintf lib/vsprintf.c:2908 [inline]
 scnprintf+0x23c/0x340 lib/vsprintf.c:2962
 info_print_ext_header kernel/printk/printk.c:567 [inline]
 devkmsg_read+0x6d1/0x1170 kernel/printk/printk.c:749
 vfs_read+0x6c8/0x1980 fs/read_write.c:479
 ksys_read+0x28c/0x520 fs/read_write.c:619
 __do_sys_read fs/read_write.c:629 [inline]
 __se_sys_read fs/read_write.c:627 [inline]
 __x64_sys_read+0xdb/0x120 fs/read_write.c:627
 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 name created at:
 __fsnotify_parent+0x23c/0x1010 fs/notify/fsnotify.c:191
 fsnotify_parent include/linux/fsnotify.h:77 [inline]
 fsnotify_file include/linux/fsnotify.h:99 [inline]
 fsnotify_perm+0x702/0xa80 include/linux/fsnotify.h:124

CPU: 1 PID: 2841 Comm: systemd-journal Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================

Crashes (19367):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/12/10 08:59 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/08 17:11 https://github.com/google/kmsan.git master 8b936c96768e a4a2a501 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/27 03:00 https://github.com/google/kmsan.git master 8f7db06d805f d50eb50a .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/26 07:11 https://github.com/google/kmsan.git master 0f36cda66082 c1132b49 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/23 10:16 https://github.com/google/kmsan.git master 82e66ad2e586 282f03fb .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/23 06:58 https://github.com/google/kmsan.git master 82e66ad2e586 282f03fb .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/22 16:33 https://github.com/google/kmsan.git master 82e66ad2e586 55f90bc6 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/22 10:02 https://github.com/google/kmsan.git master 82e66ad2e586 55f90bc6 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/21 04:27 https://github.com/google/kmsan.git master d6493d2046c4 f111d03b .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/18 16:09 https://github.com/google/kmsan.git master d6493d2046c4 0c5d9412 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/18 12:02 https://github.com/google/kmsan.git master d6493d2046c4 0c5d9412 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/18 03:57 https://github.com/google/kmsan.git master d6493d2046c4 0c5d9412 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/15 18:52 https://github.com/google/kmsan.git master 8bdd014d5dc7 0c5d9412 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/10 17:22 https://github.com/google/kmsan.git master c7f84f4e1147 838e7e2c .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/10 17:00 https://github.com/google/kmsan.git master c7f84f4e1147 838e7e2c .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/10 06:21 https://github.com/google/kmsan.git master c7f84f4e1147 838e7e2c .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/09 17:30 https://github.com/google/kmsan.git master c7f84f4e1147 838e7e2c .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/08 03:07 https://github.com/google/kmsan.git master c7f84f4e1147 efe0f24d .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/05 04:11 https://github.com/google/kmsan.git master 90f502f5d016 ce697b49 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/04 23:39 https://github.com/google/kmsan.git master 90f502f5d016 ce697b49 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/04 04:42 https://github.com/google/kmsan.git master 90f502f5d016 db0f5787 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/03 04:04 https://github.com/google/kmsan.git master 90f502f5d016 db0f5787 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/02 15:43 https://github.com/google/kmsan.git master 90f502f5d016 db0f5787 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/02 11:09 https://github.com/google/kmsan.git master 90f502f5d016 db0f5787 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/02 02:21 https://github.com/google/kmsan.git master 90f502f5d016 cc80db95 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/02 00:22 https://github.com/google/kmsan.git master 90f502f5d016 cc80db95 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/01 00:01 https://github.com/google/kmsan.git master 90f502f5d016 1d849ab4 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/09/30 01:18 https://github.com/google/kmsan.git master 90f502f5d016 be530f6c .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/09/29 13:46 https://github.com/google/kmsan.git master 90f502f5d016 d82cb927 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/09/29 06:34 https://github.com/google/kmsan.git master 90f502f5d016 d82cb927 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/09/29 04:27 https://github.com/google/kmsan.git master 90f502f5d016 d82cb927 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/09/28 23:11 https://github.com/google/kmsan.git master 90f502f5d016 d82cb927 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/09/25 05:07 https://github.com/google/kmsan.git master cd2c05533838 8cac236e .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/31 09:17 https://github.com/google/kmsan.git master 59bd88c25ffc 098b5d53 .config console log report syz C ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/11 01:37 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report syz ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/11/12 10:24 https://github.com/google/kmsan.git master a3e5c559028e 75b04091 .config console log report syz ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/16 11:50 https://github.com/google/kmsan.git master d6493d2046c4 0c5d9412 .config console log report syz ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/03 23:33 https://github.com/google/kmsan.git master 90f502f5d016 db0f5787 .config console log report syz ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/10/02 19:32 https://github.com/google/kmsan.git master 90f502f5d016 db0f5787 .config console log report syz ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/09/28 19:29 https://github.com/google/kmsan.git master 90f502f5d016 d82cb927 .config console log report syz ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/11 04:08 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/11 02:59 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/11 01:14 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/10 22:39 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/10 21:37 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/10 19:07 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/10 15:54 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/10 14:36 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/10 12:32 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/10 11:28 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/10 09:59 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/10 08:42 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/10 07:45 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/10 05:32 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/10 03:55 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/09 23:42 https://github.com/google/kmsan.git master 8b936c96768e b54aa474 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/09 21:09 https://github.com/google/kmsan.git master 8b936c96768e b54aa474 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/09 20:03 https://github.com/google/kmsan.git master 8b936c96768e b54aa474 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/09 18:38 https://github.com/google/kmsan.git master 8b936c96768e b54aa474 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/09 16:17 https://github.com/google/kmsan.git master 8b936c96768e b54aa474 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/09 15:12 https://github.com/google/kmsan.git master 8b936c96768e b54aa474 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/09 14:38 https://github.com/google/kmsan.git master 8b936c96768e b54aa474 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/09 13:29 https://github.com/google/kmsan.git master 8b936c96768e b54aa474 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/09 12:26 https://github.com/google/kmsan.git master 8b936c96768e a4a2a501 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/09/24 20:23 https://github.com/google/kmsan.git master cd2c05533838 8cac236e .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in devkmsg_read
2021/12/13 19:18 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/13 17:40 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/13 15:51 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/13 14:47 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/13 14:41 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/13 13:10 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/13 11:23 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/11 07:41 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/11 06:33 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/11 05:30 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/11 04:24 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/11 00:09 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/10 20:31 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/10 17:56 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/10 16:57 https://github.com/google/kmsan.git master 8b936c96768e 49ca1f59 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/10 13:51 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/10 06:35 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/10 02:55 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/10 01:23 https://github.com/google/kmsan.git master 8b936c96768e 4d4ce9bc .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/09 22:27 https://github.com/google/kmsan.git master 8b936c96768e b54aa474 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/09 22:21 https://github.com/google/kmsan.git master 8b936c96768e b54aa474 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/09 17:19 https://github.com/google/kmsan.git master 8b936c96768e b54aa474 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in devkmsg_read
2021/12/02 14:59 https://github.com/google/kmsan.git master a535b0caaa2f 61f86278 .config console log report info ci-upstream-kmsan-gce KMSAN: kernel-infoleak in devkmsg_read
* Struck through repros no longer work on HEAD.