From: Sasha Levin <sasha.levin@oracle.com>
To: pebolle@tiscali.nl, isdn@linux-pingi.de
Cc: davem@davemloft.net, tilman@imap.cc,
gigaset307x-common@lists.sourceforge.net,
LKML <linux-kernel@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
syzkaller <syzkaller@googlegroups.com>
Subject: gigaset: freeing an active object
Date: Fri, 27 Nov 2015 10:19:03 -0500 [thread overview]
Message-ID: <56587467.8050102@oracle.com> (raw)
Hi,
Fuzzing with syzkaller on the latest -next kernel produced this error:
[ 413.536749] WARNING: CPU: 6 PID: 25400 at lib/debugobjects.c:263 debug_print_object+0x1c4/0x1e0()
[ 413.538111] ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x90
[ 413.539598] Modules linked in:3470693efef57268844f02f5de3ab392d8cf5e209671ddd87163cb964c510659
[ 413.540448] CPU: 6 PID: 25400 Comm: syzkaller_execu Not tainted 4.4.0-rc2-next-20151126-sasha-00005-g00d303e-dirty #2653
[ 413.547614] Call Trace:
[ 413.548077] [<ffffffffa8e6b5bb>] dump_stack+0x72/0xb7
[ 413.548765] [<ffffffffa73531d3>] warn_slowpath_common+0x113/0x140
[ 413.551151] [<ffffffffa73532cb>] warn_slowpath_fmt+0xcb/0x100
[ 413.554295] [<ffffffffa8ed0194>] debug_print_object+0x1c4/0x1e0
[ 413.556592] [<ffffffffa8ed1035>] __debug_check_no_obj_freed+0x215/0x7a0
[ 413.560526] [<ffffffffa8ed2b6c>] debug_check_no_obj_freed+0x2c/0x40
[ 413.561328] [<ffffffffa77aac4c>] kfree+0x1fc/0x2f0
[ 413.561970] [<ffffffffae74b021>] gigaset_freecshw+0xe1/0x120
[ 413.562723] [<ffffffffae70669d>] gigaset_freecs+0x2ad/0x600
[ 413.564240] [<ffffffffae74ba60>] gigaset_tty_close+0x210/0x280
[ 413.565774] [<ffffffffa95ba6f2>] tty_ldisc_close.isra.1+0xc2/0xd0
[ 413.566550] [<ffffffffa95ba81b>] tty_ldisc_kill+0x4b/0x170
[ 413.567253] [<ffffffffa95bbba3>] tty_ldisc_release+0x183/0x240
[ 413.568000] [<ffffffffa95a507c>] tty_release+0xd1c/0xe80
[ 413.570176] [<ffffffffa78182fa>] __fput+0x32a/0x680
[ 413.570888] [<ffffffffa78186da>] ____fput+0x1a/0x20
[ 413.571565] [<ffffffffa73adf5c>] task_work_run+0x19c/0x1e0
[ 413.572290] [<ffffffffa735cae7>] do_exit+0xdf7/0x28f0
[ 413.576188] [<ffffffffa735e805>] do_group_exit+0x1b5/0x300
[ 413.576905] [<ffffffffa7382222>] get_signal+0x1182/0x1360
[ 413.577627] [<ffffffffa717b553>] do_signal+0x93/0x1690
[ 413.584630] [<ffffffffa70063b0>] exit_to_usermode_loop+0xc0/0x1e0
[ 413.585412] [<ffffffffa7007feb>] prepare_exit_to_usermode+0x10b/0x140
[ 413.586187] [<ffffffffb0a12c3e>] retint_user+0x8/0x23
Thanks,
Sasha
next reply other threads:[~2015-11-27 15:19 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-27 15:19 Sasha Levin [this message]
2015-11-27 17:57 ` gigaset: freeing an active object Paul Bolle
2015-11-27 18:15 ` Sasha Levin
2015-11-28 0:28 ` Paul Bolle
2015-11-28 1:20 ` Peter Hurley
2015-11-28 1:27 ` Sasha Levin
2015-11-29 14:36 ` Dmitry Vyukov
2015-11-29 15:30 ` Tilman Schmidt
2015-11-29 18:22 ` Peter Hurley
2015-11-29 18:38 ` Tilman Schmidt
2015-11-29 18:47 ` Tilman Schmidt
2015-11-29 20:26 ` Paul Bolle
2015-11-29 23:23 ` Paul Bolle
2015-11-29 23:23 ` Paul Bolle
2015-11-30 18:01 ` Paul Bolle
2015-11-30 18:30 ` Tilman Schmidt
2015-11-30 21:07 ` Paul Bolle
2015-12-01 9:30 ` Tilman Schmidt
2015-12-01 10:05 ` Paul Bolle
2015-12-02 23:48 ` Peter Hurley
2015-12-06 13:31 ` Paul Bolle
2015-12-06 15:29 ` Tilman Schmidt
2015-12-06 20:12 ` Paul Bolle
2015-12-07 9:27 ` Tilman Schmidt
2015-12-07 12:25 ` Paul Bolle
2015-12-07 18:40 ` Tilman Schmidt
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