From: syzbot <syzbot+7fddca22578bc67c3fe4@syzkaller.appspotmail.com>
To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
rafael@kernel.org, syzkaller-bugs@googlegroups.com
Subject: memory leak in kobject_set_name_vargs
Date: Wed, 29 May 2019 09:28:06 -0700 [thread overview]
Message-ID: <00000000000026f98d058a0944ed@google.com> (raw)
Hello,
syzbot found the following crash on:
HEAD commit: 9fb67d64 Merge tag 'pinctrl-v5.2-2' of git://git.kernel.or..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=11929a5ca00000
kernel config: https://syzkaller.appspot.com/x/.config?x=64479170dcaf0e11
dashboard link: https://syzkaller.appspot.com/bug?extid=7fddca22578bc67c3fe4
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1260e44aa00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13014582a00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+7fddca22578bc67c3fe4@syzkaller.appspotmail.com
ffffffffda RBX: 0000000000000003 RCX: 00000000004426c9
BUG: memory leak
unreferenced object 0xffff88811d8a84e0 (size 32):
comm "syz-executor542", pid 6993, jiffies 4294943975 (age 8.330s)
hex dump (first 32 bytes):
70 68 79 33 00 74 61 73 6b 2f 36 39 39 33 00 de phy3.task/6993..
33 33 ff aa aa 28 00 00 00 00 00 00 00 00 00 00 33...(..........
backtrace:
[<000000007298dac3>] kmemleak_alloc_recursive
include/linux/kmemleak.h:55 [inline]
[<000000007298dac3>] slab_post_alloc_hook mm/slab.h:439 [inline]
[<000000007298dac3>] slab_alloc mm/slab.c:3326 [inline]
[<000000007298dac3>] __do_kmalloc mm/slab.c:3658 [inline]
[<000000007298dac3>] __kmalloc_track_caller+0x15d/0x2c0 mm/slab.c:3675
[<000000002d35f1ca>] kvasprintf+0x6d/0xe0 lib/kasprintf.c:25
[<00000000a242e8c2>] kvasprintf_const+0x96/0xe0 lib/kasprintf.c:49
[<000000009923ecab>] kobject_set_name_vargs+0x40/0xe0 lib/kobject.c:289
[<0000000031da656f>] dev_set_name+0x63/0x90 drivers/base/core.c:1915
[<00000000cb933060>] wiphy_new_nm+0x2d9/0x820 net/wireless/core.c:470
[<00000000fe076c30>] ieee80211_alloc_hw_nm+0x158/0x770
net/mac80211/main.c:551
[<000000002d397aa1>] mac80211_hwsim_new_radio+0xad/0x1150
drivers/net/wireless/mac80211_hwsim.c:2655
[<00000000de4d0f50>] hwsim_new_radio_nl+0x369/0x50a
drivers/net/wireless/mac80211_hwsim.c:3490
[<00000000c2565b18>] genl_family_rcv_msg+0x2ab/0x5b0
net/netlink/genetlink.c:629
[<00000000dbd164a1>] genl_rcv_msg+0x54/0x9c net/netlink/genetlink.c:654
[<00000000cfe4f152>] netlink_rcv_skb+0x61/0x170
net/netlink/af_netlink.c:2486
[<000000001803b485>] genl_rcv+0x29/0x40 net/netlink/genetlink.c:665
[<000000008f236552>] netlink_unicast_kernel
net/netlink/af_netlink.c:1311 [inline]
[<000000008f236552>] netlink_unicast+0x1ec/0x2d0
net/netlink/af_netlink.c:1337
[<0000000030d22a07>] netlink_sendmsg+0x26a/0x480
net/netlink/af_netlink.c:1926
[<00000000b09b44f1>] sock_sendmsg_nosec net/socket.c:652 [inline]
[<00000000b09b44f1>] sock_sendmsg+0x54/0x70 net/socket.c:671
---
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next reply other threads:[~2019-05-29 16:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-29 16:28 syzbot [this message]
2019-06-10 20:02 ` [PATCH] cfg80211: fix memory leak of wiphy device name Eric Biggers
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