syzbot


WARNING in do_debug

Status: public: reported syz repro on 2019/07/22 18:28
Reported-by: syzbot+bf9fad16c9279acab6c2@syzkaller.appspotmail.com
First crash: 1789d, last: 1789d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in do_debug kernel C 905 2319d 2418d 4/27 fixed on 2018/02/12 17:26
upstream WARNING in do_debug (2) bpf 1 2159d 2159d 8/27 fixed on 2018/08/07 13:43

Sample crash report:
audit: type=1400 audit(1563818476.411:8): avc:  denied  { associate } for  pid=2071 comm="syz-executor.3" name="syz3" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1
------------[ cut here ]------------
WARNING: CPU: 1 PID: 2309 at arch/x86/kernel/traps.c:758 do_debug+0x3dc/0x4d0 /arch/x86/kernel/traps.c:758
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 2309 Comm: syz-executor.4 Not tainted 4.9.141+ #1
 ffff8801db712d68 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff
 ffffffff82a15a00 0000000000000001 0000000000000009 ffff8801db712e28
 ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66
Call Trace:
 <#DB> [   46.789181]  [<ffffffff81b42e79>] __dump_stack /lib/dump_stack.c:15 [inline]
 <#DB> [   46.789181]  [<ffffffff81b42e79>] dump_stack+0xc1/0x128 /lib/dump_stack.c:51
 [<ffffffff813f7125>] panic+0x1bf/0x39f /kernel/panic.c:179
 [<ffffffff813f7362>] __warn.cold.8+0x2f/0x2f /kernel/panic.c:542
 [<ffffffff810dc02c>] warn_slowpath_null+0x2c/0x40 /kernel/panic.c:585
 [<ffffffff81056fac>] do_debug+0x3dc/0x4d0 /arch/x86/kernel/traps.c:758
 [<ffffffff828187a7>] debug+0x37/0x70 /arch/x86/entry/entry_64.S:940
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/07/22 18:08 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 b3c615f5 .config console log report syz ci-android-49-kasan-gce
2019/07/22 17:27 https://android.googlesource.com/kernel/common android-4.9 8fe428403e30 b3c615f5 .config console log report ci-android-49-kasan-gce
* Struck through repros no longer work on HEAD.