netdev - Potential bugs found in igb

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:	Mon, 15 Dec 2014 11:22:08 +0800
From:	"Jia-Ju Bai" <baijiaju1990@....com>
To:	<netdev@...r.kernel.org>
Subject: Potential bugs found in igb

Recently I test linux device drivers in Linux 3.17.2, and find some
potential bugs.

igb driver:
[1] In the normal process of igb, pci_enable_pcie_error_reporting and
pci_disable_pcie_error_reporting is called in pairs in igb_probe and
igb_remove. However, when pci_enable_pcie_error_reporting has been called
and alloc_etherdev_mqs in igb_probe is failed, "err_alloc_etherdev" segment
in igb_probe is executed immediately to exit, but
pci_disable_pcie_error_reporting is not called.
[2] The same situation with [1] happens when pci_iomap in igb_probe is
failed.
[3] The same situation with [1] happens when igb_sw_init in igb_probe is
failed.
[4] The same situation with [1] happens when register_netdev in igb_probe is
failed.
[5] The same situation with [1] happens when igb_init_i2c in igb_probe is
failed.
[6] The function kcalloc is called by igb_sw_init when initializing the
ethernet card driver, but kfree is not called when register_netdev in
igb_probe is failed, which may cause memory leak.
[7] The same situation with [6] happens when igb_init_i2c in igb_probe is
failed.
[8] The same situation with [6] happens when kzalloc in igb_alloc_q_vector
is failed.
[9] The same situation with [6] happens when igb_alloc_q_vector in
igb_alloc_q_vectors is failed.
[10] When igb_init_i2c in igb_probe is failed, igb_enable_sriov is called in
igb_probe_vfs, but igb_disable_sriov is not called.
[11] The same situation with [10] happens when register_netdev in igb_probe
is failed.

Could you help me check these findings? Thank you very much, and I'm looking
forward to your reply.

--
Jia-Ju Bai

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html