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| author | Jia-Ju Bai <baijiaju1990@gmail.com> | 2018-12-26 22:09:34 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-12-28 21:27:31 -0800 |
| commit | 7418e6520f22a2e35815122fa5a53d5bbfa2c10f (patch) | |
| tree | 732d18013dc3e3eb26f1c5d2b9b9c9d541b8ed1c /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/SchedGui.py | |
| parent | f9fc54d313fab2834f44f516459cdc8ac91d797f (diff) | |
isdn: hisax: hfc_pci: Fix a possible concurrency use-after-free bug in HFCPCI_l1hw()
In drivers/isdn/hisax/hfc_pci.c, the functions hfcpci_interrupt() and
HFCPCI_l1hw() may be concurrently executed.
HFCPCI_l1hw()
line 1173: if (!cs->tx_skb)
hfcpci_interrupt()
line 942: spin_lock_irqsave();
line 1066: dev_kfree_skb_irq(cs->tx_skb);
Thus, a possible concurrency use-after-free bug may occur
in HFCPCI_l1hw().
To fix these bugs, the calls to spin_lock_irqsave() and
spin_unlock_irqrestore() are added in HFCPCI_l1hw(), to protect the
access to cs->tx_skb.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/SchedGui.py')
0 files changed, 0 insertions, 0 deletions