syzbot


WARNING in set_precision (2)

Status: public: reported C repro on 2019/04/11 08:44
Reported-by: syzbot+4d2f8b90fc6a442021b7@syzkaller.appspotmail.com
First crash: 2268d, last: 2177d
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in set_precision (2) wireless C done 117 1552d 1650d 15/27 fixed on 2020/06/18 13:57
upstream WARNING in set_precision net C 140 2190d 2231d 8/27 fixed on 2018/08/07 13:43
android-49 WARNING in set_precision C 1320 2268d 2390d 3/3 fixed on 2018/05/02 05:33
upstream WARNING in set_precision (3) bcachefs C 13 59d 58d 0/27 upstream: reported C repro on 2024/05/20 14:18

Sample crash report:
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3800 at lib/vsprintf.c:1938 set_precision+0x144/0x170 lib/vsprintf.c:1938
precision 1047814 too large[   26.009041] Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 3800 Comm: syz-executor440 Not tainted 4.9.113-g47bbcd6 #10
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d97376e0 ffffffff81eb32a9 ffffffff83c48980 00000000ffffffff
 0000000000000000 0000000000000000 0000000000000792 ffff8801d97377a0
 ffffffff81421a55 0000000041b58ab3 ffffffff843bb788 ffffffff81421896
Call Trace:
 [<ffffffff81eb32a9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb32a9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81421a55>] panic+0x1bf/0x3bc kernel/panic.c:179
 [<ffffffff81421d41>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542
 [<ffffffff811366e2>] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:565
 [<ffffffff81ed47f4>] set_precision+0x144/0x170 lib/vsprintf.c:1938
 [<ffffffff81ede70e>] vsnprintf+0x31e/0x1840 lib/vsprintf.c:2014
 [<ffffffff81edfc5d>] vscnprintf+0x2d/0x60 lib/vsprintf.c:2144
 [<ffffffff8125f2d4>] vprintk_emit+0xf4/0x790 kernel/printk/printk.c:1847
 [<ffffffff8125f998>] vprintk+0x28/0x30 kernel/printk/printk.c:1913
 [<ffffffff8125f9bd>] vprintk_default+0x1d/0x30 kernel/printk/printk.c:1914
 [<ffffffff8142cbbc>] vprintk_func kernel/printk/internal.h:36 [inline]
 [<ffffffff8142cbbc>] printk+0xaf/0xd7 kernel/printk/printk.c:1975
 [<ffffffff839e220a>] dns_resolver_preparse.cold.3+0x71/0x240 net/dns_resolver/dns_key.c:131
 [<ffffffff81cd1fdb>] key_create_or_update+0x35b/0xac0 security/keys/key.c:855
 [<ffffffff81cd6e54>] SYSC_add_key security/keys/keyctl.c:125 [inline]
 [<ffffffff81cd6e54>] SyS_add_key+0x1b4/0x390 security/keys/keyctl.c:60
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839f9f93>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1537):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/07/20 06:04 https://android.googlesource.com/kernel/common android-4.9 47bbcd6bf8f9 49f35839 .config console log report syz C ci-android-49-kasan-gce-root
2018/07/20 04:16 https://android.googlesource.com/kernel/common android-4.9 47bbcd6bf8f9 49f35839 .config console log report syz C ci-android-49-kasan-gce
2018/07/19 22:56 https://android.googlesource.com/kernel/common android-4.9 47bbcd6bf8f9 49f35839 .config console log report syz C ci-android-49-kasan-gce-root
2018/07/19 22:54 https://android.googlesource.com/kernel/common android-4.9 47bbcd6bf8f9 49f35839 .config console log report syz C ci-android-49-kasan-gce
2018/06/08 20:38 https://android.googlesource.com/kernel/common android-4.9 db2c520bb56b 866118af .config console log report syz C ci-android-49-kasan-gce-root
2018/06/08 19:34 https://android.googlesource.com/kernel/common android-4.9 db2c520bb56b 866118af .config console log report syz C ci-android-49-kasan-gce
2018/06/08 14:49 https://android.googlesource.com/kernel/common android-4.9 42a730adb6e2 f7b27b7a .config console log report syz C ci-android-49-kasan-gce-root
2018/06/08 14:37 https://android.googlesource.com/kernel/common android-4.9 42a730adb6e2 f7b27b7a .config console log report syz C ci-android-49-kasan-gce-root
2018/06/08 12:46 https://android.googlesource.com/kernel/common android-4.9 42a730adb6e2 f7b27b7a .config console log report syz C ci-android-49-kasan-gce
2018/06/08 12:05 https://android.googlesource.com/kernel/common android-4.9 42a730adb6e2 f7b27b7a .config console log report syz C ci-android-49-kasan-gce
2018/05/11 05:09 https://android.googlesource.com/kernel/common android-4.9 c462abbf779b 12c7428a .config console log report syz C ci-android-49-kasan-gce
2018/05/11 04:56 https://android.googlesource.com/kernel/common android-4.9 c462abbf779b 12c7428a .config console log report syz C ci-android-49-kasan-gce-root
2018/05/11 04:15 https://android.googlesource.com/kernel/common android-4.9 c462abbf779b 12c7428a .config console log report syz C ci-android-49-kasan-gce-root
2018/05/11 04:01 https://android.googlesource.com/kernel/common android-4.9 c462abbf779b 12c7428a .config console log report syz C ci-android-49-kasan-gce
2018/05/05 08:29 https://android.googlesource.com/kernel/common android-4.9 63a812bb84e4 9ce14f4b .config console log report syz C ci-android-49-kasan-gce
2018/05/05 03:29 https://android.googlesource.com/kernel/common android-4.9 f5a861c30cb7 9ce14f4b .config console log report syz C ci-android-49-kasan-gce-root
2018/05/02 07:04 https://android.googlesource.com/kernel/common android-4.9 1321d4226176 d5b114b4 .config console log report syz C ci-android-49-kasan-gce
2018/05/02 06:52 https://android.googlesource.com/kernel/common android-4.9 1321d4226176 d5b114b4 .config console log report syz C ci-android-49-kasan-gce-root
2018/07/20 04:32 https://android.googlesource.com/kernel/common android-4.9 47bbcd6bf8f9 49f35839 .config console log report syz C ci-android-49-kasan-gce-386
2018/07/19 22:40 https://android.googlesource.com/kernel/common android-4.9 47bbcd6bf8f9 49f35839 .config console log report syz C ci-android-49-kasan-gce-386
2018/06/08 19:34 https://android.googlesource.com/kernel/common android-4.9 db2c520bb56b 866118af .config console log report syz C ci-android-49-kasan-gce-386
2018/06/08 12:46 https://android.googlesource.com/kernel/common android-4.9 42a730adb6e2 f7b27b7a .config console log report syz C ci-android-49-kasan-gce-386
2018/06/08 12:04 https://android.googlesource.com/kernel/common android-4.9 42a730adb6e2 f7b27b7a .config console log report syz C ci-android-49-kasan-gce-386
2018/05/12 04:44 https://android.googlesource.com/kernel/common android-4.9 c2f9bce9fee8 12c7428a .config console log report syz C ci-android-49-kasan-gce-386
2018/05/12 04:19 https://android.googlesource.com/kernel/common android-4.9 c2f9bce9fee8 12c7428a .config console log report syz C ci-android-49-kasan-gce-386
2018/05/05 03:41 https://android.googlesource.com/kernel/common android-4.9 f5a861c30cb7 9ce14f4b .config console log report syz C ci-android-49-kasan-gce-386
2018/05/02 06:38 https://android.googlesource.com/kernel/common android-4.9 1321d4226176 d5b114b4 .config console log report syz C ci-android-49-kasan-gce-386
2018/06/27 05:20 https://android.googlesource.com/kernel/common android-4.9 00a0bcbfcfb6 b0294c53 .config console log report syz ci-android-49-kasan-gce
2018/05/21 04:42 https://android.googlesource.com/kernel/common android-4.9 aef17a58e8ca f48c20b8 .config console log report syz ci-android-49-kasan-gce
2018/08/01 07:10 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1477993e .config console log report ci-android-49-kasan-gce
2018/08/01 05:47 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1477993e .config console log report ci-android-49-kasan-gce
2018/08/01 04:38 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1477993e .config console log report ci-android-49-kasan-gce
2018/08/01 03:18 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1477993e .config console log report ci-android-49-kasan-gce
2018/08/01 00:32 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1477993e .config console log report ci-android-49-kasan-gce
2018/07/31 23:08 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1477993e .config console log report ci-android-49-kasan-gce
2018/07/31 20:57 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1477993e .config console log report ci-android-49-kasan-gce
2018/07/31 18:32 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/31 17:25 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/31 15:04 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/31 13:59 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/31 09:11 https://android.googlesource.com/kernel/common android-4.9 8956c50bdcd3 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/31 07:50 https://android.googlesource.com/kernel/common android-4.9 8956c50bdcd3 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/31 05:26 https://android.googlesource.com/kernel/common android-4.9 8956c50bdcd3 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/31 02:56 https://android.googlesource.com/kernel/common android-4.9 8956c50bdcd3 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/31 01:24 https://android.googlesource.com/kernel/common android-4.9 8956c50bdcd3 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/30 22:43 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/30 20:30 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/30 18:07 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/30 17:04 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/30 14:13 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/30 12:27 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/30 09:00 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/30 08:44 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/30 07:38 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/30 06:32 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce-root
2018/07/30 05:21 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/30 03:22 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce
2018/07/30 02:12 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce
2018/08/01 00:47 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1477993e .config console log report ci-android-49-kasan-gce-386
2018/07/31 22:05 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1477993e .config console log report ci-android-49-kasan-gce-386
2018/07/31 19:57 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1477993e .config console log report ci-android-49-kasan-gce-386
2018/07/31 19:50 https://android.googlesource.com/kernel/common android-4.9 90e7a9002952 1477993e .config console log report ci-android-49-kasan-gce-386
2018/07/31 11:11 https://android.googlesource.com/kernel/common android-4.9 8956c50bdcd3 1a381291 .config console log report ci-android-49-kasan-gce-386
2018/07/31 10:02 https://android.googlesource.com/kernel/common android-4.9 8956c50bdcd3 1a381291 .config console log report ci-android-49-kasan-gce-386
2018/07/31 06:35 https://android.googlesource.com/kernel/common android-4.9 8956c50bdcd3 1a381291 .config console log report ci-android-49-kasan-gce-386
2018/07/31 04:03 https://android.googlesource.com/kernel/common android-4.9 8956c50bdcd3 1a381291 .config console log report ci-android-49-kasan-gce-386
2018/07/30 23:47 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce-386
2018/07/30 21:31 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce-386
2018/07/30 20:22 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce-386
2018/07/30 19:14 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce-386
2018/07/30 15:18 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce-386
2018/07/30 11:17 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce-386
2018/07/30 10:06 https://android.googlesource.com/kernel/common android-4.9 990559158c7b 1a381291 .config console log report ci-android-49-kasan-gce-386
* Struck through repros no longer work on HEAD.