2021-06-02 16:38:53

by syzbot

[permalink] [raw]
Subject: [syzbot] memory leak in cfg80211_inform_single_bss_frame_data

Hello,

syzbot found the following issue on:

HEAD commit: b90e90f4 Merge branch 'i2c/for-current' of git://git.kerne..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=13bd382fd00000
kernel config: https://syzkaller.appspot.com/x/.config?x=b8c23f7848d1c696
dashboard link: https://syzkaller.appspot.com/bug?extid=7a942657a255a9d9b18a
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=131ce883d00000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]

BUG: memory leak
unreferenced object 0xffff888119584780 (size 96):
comm "kworker/u4:0", pid 8670, jiffies 4295047890 (age 8.810s)
hex dump (first 32 bytes):
fd f0 0a 3d 90 c3 05 00 00 00 00 00 00 00 00 00 ...=............
00 00 00 00 00 00 00 00 28 00 00 00 01 00 06 10 ........(.......
backtrace:
[<ffffffff83e52709>] cfg80211_inform_single_bss_frame_data+0x139/0x640 net/wireless/scan.c:2376
[<ffffffff83e52c5b>] cfg80211_inform_bss_frame_data+0x4b/0x470 net/wireless/scan.c:2437
[<ffffffff83ef1d43>] ieee80211_bss_info_update+0x183/0x470 net/mac80211/scan.c:190
[<ffffffff83eff43b>] ieee80211_rx_bss_info net/mac80211/ibss.c:1126 [inline]
[<ffffffff83eff43b>] ieee80211_rx_mgmt_probe_beacon+0x60b/0x950 net/mac80211/ibss.c:1615
[<ffffffff83effe8c>] ieee80211_ibss_rx_queued_mgmt+0x23c/0x6e0 net/mac80211/ibss.c:1642
[<ffffffff83f01d76>] ieee80211_iface_work+0x476/0x5f0 net/mac80211/iface.c:1437
[<ffffffff8125f9d9>] process_one_work+0x2c9/0x600 kernel/workqueue.c:2276
[<ffffffff812602c9>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2422
[<ffffffff81267bf8>] kthread+0x178/0x1b0 kernel/kthread.c:313
[<ffffffff810022ef>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

BUG: memory leak
unreferenced object 0xffff888119584680 (size 96):
comm "kworker/u4:0", pid 8670, jiffies 4295048012 (age 7.590s)
hex dump (first 32 bytes):
f4 b0 1d 3d 90 c3 05 00 00 00 00 00 00 00 00 00 ...=............
00 00 00 00 00 00 00 00 28 00 00 00 01 00 06 10 ........(.......
backtrace:
[<ffffffff83e52709>] cfg80211_inform_single_bss_frame_data+0x139/0x640 net/wireless/scan.c:2376
[<ffffffff83e52c5b>] cfg80211_inform_bss_frame_data+0x4b/0x470 net/wireless/scan.c:2437
[<ffffffff83ef1d43>] ieee80211_bss_info_update+0x183/0x470 net/mac80211/scan.c:190
[<ffffffff83eff43b>] ieee80211_rx_bss_info net/mac80211/ibss.c:1126 [inline]
[<ffffffff83eff43b>] ieee80211_rx_mgmt_probe_beacon+0x60b/0x950 net/mac80211/ibss.c:1615
[<ffffffff83effe8c>] ieee80211_ibss_rx_queued_mgmt+0x23c/0x6e0 net/mac80211/ibss.c:1642
[<ffffffff83f01d76>] ieee80211_iface_work+0x476/0x5f0 net/mac80211/iface.c:1437
[<ffffffff8125f9d9>] process_one_work+0x2c9/0x600 kernel/workqueue.c:2276
[<ffffffff812602c9>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2422
[<ffffffff81267bf8>] kthread+0x178/0x1b0 kernel/kthread.c:313
[<ffffffff810022ef>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

BUG: memory leak
unreferenced object 0xffff888119584400 (size 96):
comm "kworker/u4:0", pid 8670, jiffies 4295048012 (age 7.590s)
hex dump (first 32 bytes):
f5 b0 1d 3d 90 c3 05 00 00 00 00 00 00 00 00 00 ...=............
00 00 00 00 00 00 00 00 28 00 00 00 01 00 06 10 ........(.......
backtrace:
[<ffffffff83e52709>] cfg80211_inform_single_bss_frame_data+0x139/0x640 net/wireless/scan.c:2376
[<ffffffff83e52c5b>] cfg80211_inform_bss_frame_data+0x4b/0x470 net/wireless/scan.c:2437
[<ffffffff83ef1d43>] ieee80211_bss_info_update+0x183/0x470 net/mac80211/scan.c:190
[<ffffffff83eff43b>] ieee80211_rx_bss_info net/mac80211/ibss.c:1126 [inline]
[<ffffffff83eff43b>] ieee80211_rx_mgmt_probe_beacon+0x60b/0x950 net/mac80211/ibss.c:1615
[<ffffffff83effe8c>] ieee80211_ibss_rx_queued_mgmt+0x23c/0x6e0 net/mac80211/ibss.c:1642
[<ffffffff83f01d76>] ieee80211_iface_work+0x476/0x5f0 net/mac80211/iface.c:1437
[<ffffffff8125f9d9>] process_one_work+0x2c9/0x600 kernel/workqueue.c:2276
[<ffffffff812602c9>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2422
[<ffffffff81267bf8>] kthread+0x178/0x1b0 kernel/kthread.c:313
[<ffffffff810022ef>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

BUG: memory leak
unreferenced object 0xffff8881196dda80 (size 96):
comm "kworker/u4:1", pid 8689, jiffies 4295048023 (age 7.480s)
hex dump (first 32 bytes):
e4 40 1f 3d 90 c3 05 00 00 00 00 00 00 00 00 00 [email protected]=............
00 00 00 00 00 00 00 00 28 00 00 00 01 00 06 10 ........(.......
backtrace:
[<ffffffff83e52709>] cfg80211_inform_single_bss_frame_data+0x139/0x640 net/wireless/scan.c:2376
[<ffffffff83e52c5b>] cfg80211_inform_bss_frame_data+0x4b/0x470 net/wireless/scan.c:2437
[<ffffffff83ef1d43>] ieee80211_bss_info_update+0x183/0x470 net/mac80211/scan.c:190
[<ffffffff83eff43b>] ieee80211_rx_bss_info net/mac80211/ibss.c:1126 [inline]
[<ffffffff83eff43b>] ieee80211_rx_mgmt_probe_beacon+0x60b/0x950 net/mac80211/ibss.c:1615
[<ffffffff83effe8c>] ieee80211_ibss_rx_queued_mgmt+0x23c/0x6e0 net/mac80211/ibss.c:1642
[<ffffffff83f01d76>] ieee80211_iface_work+0x476/0x5f0 net/mac80211/iface.c:1437
[<ffffffff8125f9d9>] process_one_work+0x2c9/0x600 kernel/workqueue.c:2276
[<ffffffff812602c9>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2422
[<ffffffff81267bf8>] kthread+0x178/0x1b0 kernel/kthread.c:313
[<ffffffff810022ef>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294



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