On Fri, Jun 13, 2014 at 04:14:44PM +0800, Jet Chen wrote: > Hi Tejun, > > 0day kernel testing robot got the below dmesg and the first bad commit is > > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > commit 0ffc2a9c8072969253a20821c2c733a2cbb4c7c7 > Author: Tejun Heo <[email protected]> > AuthorDate: Wed Feb 27 17:05:08 2013 -0800 > Commit: Linus Torvalds <[email protected]> > CommitDate: Wed Feb 27 19:10:21 2013 -0800 > > idr: implement lookup hint ... > [ 17.603698] sock: process `trinity-main' is using obsolete setsockopt > SO_BSDCOMPAT > [ 17.798944] ------------[ cut here ]------------ > [ 17.798972] WARNING: at lib/idr.c:669 idr_find_slowpath+0x28/0xca() > [ 17.798973] Hardware name: Bochs > [ 17.798976] Pid: 655, comm: trinity-main Not tainted 3.8.0-06482-g0ffc2a9 > #68 > [ 17.798976] Call Trace: > [ 17.798989] [<c022ace6>] warn_slowpath_common+0x72/0x89 > [ 17.798992] [<c051f001>] ? idr_find_slowpath+0x28/0xca > [ 17.798994] [<c051f001>] ? idr_find_slowpath+0x28/0xca > [ 17.798997] [<c022ad9b>] warn_slowpath_null+0x1d/0x1f > [ 17.798999] [<c051f001>] idr_find_slowpath+0x28/0xca > [ 17.799007] [<c027fab7>] perf_init_event+0x82/0x124 > [ 17.799013] [<c024321f>] ? __mutex_init+0x3f/0x44 > [ 17.799015] [<c027fda9>] perf_event_alloc+0x250/0x360 > [ 17.799018] [<c028040e>] sys_perf_event_open+0x336/0x664 > [ 17.799036] [<c0944280>] syscall_call+0x7/0xb > [ 17.799042] [<c0940000>] ? SetAgcIf.isra.6+0x156/0x290 > [ 17.799043] ---[ end trace 8e00e88be2b81021 ]--- > [ 76.161086] Unregister pv shared memory for cpu 0
This is perf_init_event() invoking idr_find() with negative ID triggering the warning. The warning was removed quite some time ago. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
