syzbot


assertion failed: kref

Status: fixed on 2019/05/17 09:57
Reported-by: syzbot+4ea9ed2220ee4d513e0b@syzkaller.appspotmail.com
Fix commit: 023b2a861ae2 proc: fix refcounting bug in proc_get_set()
First crash: 2320d, last: 2016d

Sample crash report:
kernel panic at /syzkaller/managers/main/kernel/kern/include/kref.h:61, from core 3: assertion failed: kref
Stack Backtrace on Core 3:
#01 [<0xffffffffc200a42c>] in backtrace at src/kdebug.c:235
#02 [<0xffffffffc2009bc5>] in _panic at src/init.c:268
#03 [<0xffffffffc2049c06>] in kref_get at include/kref.h:61
#04 [<     [inline]     >] in proc_incref.10299 at src/process.c:577
#04 [<0xffffffffc2049c3e>] in enum_proc.10299 at src/process.c:2432
#05 [<0xffffffffc2009261>] in hash_for_each at src/hashtable.c:428
#06 [<0xffffffffc204f147>] in proc_get_set at src/process.c:2453
#07 [<0xffffffffc20460d1>] in profiler_emit_current_system_status at src/profiler.c:272
#08 [<0xffffffffc20461f3>] in profiler_setup at src/profiler.c:423
#09 [<0xffffffffc207c4ca>] in kprof_open at drivers/dev/kprof.c:230
#10 [<0xffffffffc2033ba0>] in __namec_from at src/ns/chan.c:1268
#11 [<0xffffffffc2034393>] in namec at src/ns/chan.c:1562
#12 [<0xffffffffc20417e6>] in sysopenat at src/ns/sysfile.c:572
#13 [<0xffffffffc20592bf>] in sys_openat at src/syscall.c:1806
#14 [<0xffffffffc2059f49>] in syscall at src/syscall.c:2578
#15 [<0xffffffffc205aaf8>] in run_local_syscall at src/syscall.c:2615
#16 [<0xffffffffc205b039>] in prep_syscalls at src/syscall.c:2635
#17 [<0xffffffffc20ac812>] in sysenter_callwrapper at arch/x86/trap.c:877

Crashes (21149):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/05/03 18:28 akaros d8ea787e7260 d28f4ce5 .config console log report syz C ci-akaros-main
2019/05/03 06:54 akaros d8ea787e7260 1bfa09b9 .config console log report syz C ci-akaros-main
2018/11/16 14:48 akaros f89b6d306593 f5e275d1 .config console log report syz C ci-akaros-main
2018/09/14 12:29 akaros 3957e726d0cb a343a400 .config console log report syz C ci-akaros-main
2018/09/14 10:35 akaros 3957e726d0cb a343a400 .config console log report syz C ci-akaros-main
2018/09/14 08:13 akaros 3957e726d0cb 19e9088b .config console log report syz C ci-akaros-main
2018/09/14 06:13 akaros 3957e726d0cb 19e9088b .config console log report syz C ci-akaros-main
2018/09/13 03:13 akaros 152504243625 71907daf .config console log report syz C ci-akaros-main
2018/09/12 01:36 akaros 09363dc1775f 4ae17b1f .config console log report syz C ci-akaros-main
2018/09/12 00:10 akaros 09363dc1775f 4ae17b1f .config console log report syz C ci-akaros-main
2018/09/11 23:36 akaros 09363dc1775f 4ae17b1f .config console log report syz C ci-akaros-main
2018/09/11 23:09 akaros 09363dc1775f 4ae17b1f .config console log report syz C ci-akaros-main
2018/09/11 21:31 akaros 09363dc1775f 4ae17b1f .config console log report syz C ci-akaros-main
2018/09/11 20:25 akaros 09363dc1775f 4ae17b1f .config console log report syz C ci-akaros-main
2018/09/11 19:10 akaros 09363dc1775f 4ae17b1f .config console log report syz C ci-akaros-main
2018/09/10 14:26 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/10 13:18 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/10 12:50 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/10 12:35 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/10 12:09 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/10 11:27 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/10 10:59 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/10 10:17 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/10 08:33 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/10 04:46 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/10 04:32 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/10 01:54 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/10 01:39 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/09 20:26 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/09 19:31 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/09 19:04 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/09 18:05 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/09 16:40 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/09 16:06 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/09 15:09 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/09 14:49 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/09 05:36 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/09 05:08 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/09 04:14 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/09/09 04:00 akaros 09363dc1775f 6b5120a4 .config console log report syz C ci-akaros-main
2018/07/24 10:17 akaros c5f7000db927 9fe4bdc5 .config console log report syz C ci-akaros-main
2019/05/17 09:27 akaros 46f3b28fdbc8 7fb690f3 .config console log report ci-akaros-main
2019/05/17 07:55 akaros 46f3b28fdbc8 7fb690f3 .config console log report ci-akaros-main
2019/05/17 06:45 akaros 46f3b28fdbc8 7fb690f3 .config console log report ci-akaros-main
2019/05/17 05:44 akaros 46f3b28fdbc8 7fb690f3 .config console log report ci-akaros-main
2019/05/17 04:16 akaros 46f3b28fdbc8 7fb690f3 .config console log report ci-akaros-main
2019/05/17 03:18 akaros 46f3b28fdbc8 7fb690f3 .config console log report ci-akaros-main
2019/05/17 02:03 akaros 46f3b28fdbc8 7fb690f3 .config console log report ci-akaros-main
2019/05/17 00:56 akaros 46f3b28fdbc8 7fb690f3 .config console log report ci-akaros-main
2019/05/16 23:46 akaros 46f3b28fdbc8 7fb690f3 .config console log report ci-akaros-main
2019/05/16 22:57 akaros 1af5d58800cb 7fb690f3 .config console log report ci-akaros-main
2019/05/16 21:51 akaros 1af5d58800cb 7fb690f3 .config console log report ci-akaros-main
2019/05/16 20:48 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 19:47 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 19:24 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 18:18 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 17:18 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 17:12 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 16:09 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 15:04 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 14:31 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 13:19 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 12:18 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 11:33 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 10:29 akaros 1af5d58800cb f59a9cb5 .config console log report ci-akaros-main
2019/05/16 09:29 akaros 1af5d58800cb 051c49fe .config console log report ci-akaros-main
2019/05/16 08:22 akaros 1af5d58800cb 051c49fe .config console log report ci-akaros-main
2019/05/16 07:14 akaros 1af5d58800cb 051c49fe .config console log report ci-akaros-main
2019/05/16 05:49 akaros 1af5d58800cb 051c49fe .config console log report ci-akaros-main
2019/05/16 05:00 akaros 1af5d58800cb 051c49fe .config console log report ci-akaros-main
2019/05/16 03:52 akaros 1af5d58800cb 051c49fe .config console log report ci-akaros-main
2019/05/16 02:49 akaros 1af5d58800cb 051c49fe .config console log report ci-akaros-main
2019/05/16 01:56 akaros 1af5d58800cb 051c49fe .config console log report ci-akaros-main
2019/05/16 00:55 akaros 1af5d58800cb 051c49fe .config console log report ci-akaros-main
2019/05/15 23:57 akaros 1af5d58800cb 051c49fe .config console log report ci-akaros-main
2019/05/15 22:47 akaros 1af5d58800cb 051c49fe .config console log report ci-akaros-main
2019/05/15 22:41 akaros 1af5d58800cb 051c49fe .config console log report ci-akaros-main
2019/05/15 21:32 akaros 1af5d58800cb 22c391e1 .config console log report ci-akaros-main
2019/05/15 20:45 akaros 1af5d58800cb 22c391e1 .config console log report ci-akaros-main
2019/05/15 19:38 akaros 1af5d58800cb 22c391e1 .config console log report ci-akaros-main
2019/05/15 19:03 akaros 1af5d58800cb 22c391e1 .config console log report ci-akaros-main
2019/05/15 17:54 akaros 1af5d58800cb 22c391e1 .config console log report ci-akaros-main
2019/05/15 16:42 akaros 1af5d58800cb 22c391e1 .config console log report ci-akaros-main
2018/07/16 21:47 akaros 93b9607ebeff 13761366 .config console log report ci-akaros-main
* Struck through repros no longer work on HEAD.