From: syzbot <syzbot+ad8ca40ecd77896d51e2@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: memory leak in kobject_set_name_vargs (2)
Date: Tue, 23 Jul 2019 16:08:06 -0700 [thread overview]
Message-ID: <000000000000edcb3c058e6143d5@google.com> (raw)
Hello,
syzbot found the following crash on:
HEAD commit: 3bfe1fc4 Merge tag 'for-5.3/dm-changes-2' of git://git.ker..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=130322afa00000
kernel config: https://syzkaller.appspot.com/x/.config?x=dcfc65ee492509c6
dashboard link: https://syzkaller.appspot.com/bug?extid=ad8ca40ecd77896d51e2
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=135cbed0600000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14dd4e34600000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+ad8ca40ecd77896d51e2@syzkaller.appspotmail.com
BUG: memory leak
unreferenced object 0xffff88810cc5d860 (size 32):
comm "syz-executor938", pid 7153, jiffies 4294945400 (age 8.020s)
hex dump (first 32 bytes):
69 70 36 5f 76 74 69 31 00 2f 37 31 35 33 00 00 ip6_vti1./7153..
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000000800471f>] kmemleak_alloc_recursive
/./include/linux/kmemleak.h:43 [inline]
[<000000000800471f>] slab_post_alloc_hook /mm/slab.h:522 [inline]
[<000000000800471f>] slab_alloc /mm/slab.c:3319 [inline]
[<000000000800471f>] __do_kmalloc /mm/slab.c:3653 [inline]
[<000000000800471f>] __kmalloc_track_caller+0x165/0x300 /mm/slab.c:3670
[<000000007a2eef8e>] kstrdup+0x3a/0x70 /mm/util.c:53
[<00000000a309e483>] kstrdup_const+0x48/0x60 /mm/util.c:75
[<00000000cf8dc39b>] kvasprintf_const+0x7e/0xe0 /lib/kasprintf.c:48
[<000000005a964730>] kobject_set_name_vargs+0x40/0xe0 /lib/kobject.c:289
[<00000000e2a9ccdf>] dev_set_name+0x63/0x90 /drivers/base/core.c:1915
[<000000007bc7b1da>] netdev_register_kobject+0x5a/0x1b0
/net/core/net-sysfs.c:1727
[<00000000637b4645>] register_netdevice+0x397/0x600 /net/core/dev.c:8723
[<0000000038b21fdc>] vti6_tnl_create2+0x47/0xb0 /net/ipv6/ip6_vti.c:189
[<0000000023231475>] vti6_tnl_create /net/ipv6/ip6_vti.c:229 [inline]
[<0000000023231475>] vti6_locate /net/ipv6/ip6_vti.c:277 [inline]
[<0000000023231475>] vti6_locate+0x244/0x2c0 /net/ipv6/ip6_vti.c:255
[<000000006ebf0a44>] vti6_ioctl+0x17f/0x390 /net/ipv6/ip6_vti.c:802
[<00000000077406fa>] dev_ifsioc+0x324/0x460 /net/core/dev_ioctl.c:322
[<00000000465d817c>] dev_ioctl+0x157/0x45e /net/core/dev_ioctl.c:514
[<00000000e2472af6>] sock_ioctl+0x394/0x480 /net/socket.c:1099
[<0000000024234c3b>] vfs_ioctl /fs/ioctl.c:46 [inline]
[<0000000024234c3b>] file_ioctl /fs/ioctl.c:509 [inline]
[<0000000024234c3b>] do_vfs_ioctl+0x62a/0x810 /fs/ioctl.c:696
[<0000000015b52ca4>] ksys_ioctl+0x86/0xb0 /fs/ioctl.c:713
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches
next reply other threads:[~2019-07-23 23:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-23 23:08 syzbot [this message]
2019-07-24 8:25 ` memory leak in kobject_set_name_vargs (2) Dmitry Vyukov
2019-07-26 23:26 ` syzbot
2019-07-27 2:29 ` Linus Torvalds
2019-07-27 2:56 ` Qian Cai
2019-08-08 17:04 ` Dmitry Vyukov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=000000000000edcb3c058e6143d5@google.com \
--to=syzbot+ad8ca40ecd77896d51e2@syzkaller.appspotmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.