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WARNING in task_participate_group_stop

Status: public: reported C repro on 2019/04/12 00:01
Reported-by: syzbot+11a2061959c90f1df73e@syzkaller.appspotmail.com
First crash: 2086d, last: 2086d
▶ ▼ Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in task_participate_group_stop C inconclusive 8 793d 1815d 0/1 upstream: reported C repro on 2019/12/02 14:36
upstream WARNING in task_participate_group_stop (2) kernel C inconclusive unreliable 21 23d 2397d 0/28 upstream: reported C repro on 2018/04/29 17:00
android-44 WARNING in task_participate_group_stop (2) C 4 2086d 2049d 0/2 public: reported C repro on 2019/04/13 00:00
android-49 WARNING in task_participate_group_stop C 15 2507d 2663d 2/3 fixed on 2018/02/06 12:55
upstream WARNING in task_participate_group_stop C 29 2563d 2578d 4/28 fixed on 2018/02/02 04:39
linux-4.19 WARNING in task_participate_group_stop C error 11 794d 1815d 0/1 upstream: reported C repro on 2019/12/02 13:46
android-44 WARNING in task_participate_group_stop C 10 2515d 2522d 2/2 fixed on 2018/02/06 10:09
android-49 WARNING in task_participate_group_stop (2) C 11 1815d 2048d 0/3 public: reported C repro on 2019/04/14 00:00

Sample crash report:
random: sshd: uninitialized urandom read (32 bytes read)
audit: type=1400 audit(1551895949.038:7): avc:  denied  { map } for  pid=1785 comm="syz-executor650" path="/root/syz-executor650351011" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1800 at kernel/signal.c:349 task_participate_group_stop+0x1b3/0x210 kernel/signal.c:349
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 1800 Comm: 5 Not tainted 4.14.105+ #25
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xb9/0x10e lib/dump_stack.c:53
 panic+0x1d9/0x3c2 kernel/panic.c:182
 __warn.cold+0x2f/0x3b kernel/panic.c:546
Kernel Offset: 0x9200000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/03/06 18:15 android-4.14 cef9f8d29c1e 05cf83bf .config console log report syz C ci-android-414-kasan-gce-root
2019/03/06 17:29 android-4.14 cef9f8d29c1e 05cf83bf .config console log report ci-android-414-kasan-gce-root
* Struck through repros no longer work on HEAD.