memory leak in mgmt_cmd

memory leak in mgmt_cmd_status

Status: auto-obsoleted due to no activity on 2022/10/10 07:27
Subsystems: bluetooth
[Documentation on labels]
Reported-by: syzbot+80f5bab4eb14d14e7386@syzkaller.appspotmail.com
First crash: 1770d, last: 1561d

▶ ▼ Discussions (1)

Title	Replies (including bot)	Last reply
memory leak in mgmt_cmd_status	0 (2)	2021/04/05 17:34

▶ ▼ Last patch testing requests (3)


Created	Duration	User	Repo	Result
2022/10/09 20:30	13m	retest repro	upstream	OK log
2022/10/09 15:30	14m	retest repro	upstream	OK log
2020/09/23 10:45	14m	anant.thazhemadam@gmail.com	upstream	OK

Sample crash report:

BUG: memory leak
unreferenced object 0xffff88810ddf4700 (size 232):
  comm "kworker/u5:2", pid 8406, jiffies 4294997792 (age 10.670s)
  hex dump (first 32 bytes):
    d0 f0 af 0e 81 88 ff ff d0 f0 af 0e 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 f0 af 0e 81 88 ff ff  ................
  backtrace:
    [<ffffffff8364af8f>] __alloc_skb+0x20f/0x280 net/core/skbuff.c:412
    [<ffffffff83c5f871>] alloc_skb include/linux/skbuff.h:1103 [inline]
    [<ffffffff83c5f871>] mgmt_cmd_status+0x31/0x160 net/bluetooth/mgmt_util.c:102
    [<ffffffff83c2a669>] mgmt_set_discoverable_complete+0x1b9/0x1e0 net/bluetooth/mgmt.c:1357
    [<ffffffff83c579d8>] discoverable_update_work+0x88/0xb0 net/bluetooth/hci_request.c:2806
    [<ffffffff812595d9>] process_one_work+0x2c9/0x600 kernel/workqueue.c:2275
    [<ffffffff81259ec9>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2421
    [<ffffffff812615f8>] kthread+0x178/0x1b0 kernel/kthread.c:292
    [<ffffffff8100227f>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2021/04/05 17:34	upstream	e49d033bddf5	6a81331a	.config	console log	report	syz	C			ci-upstream-gce-leak	memory leak in mgmt_cmd_status
2020/09/09 02:42	upstream	6f6a73c8b715	abf9ba4f	.config	console log	report	syz				ci-upstream-gce-leak

* ~~Struck through~~ repros no longer work on HEAD.