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linux/drivers/net/wwan
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Yang Yingliang 258ad2fe5e wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new() 
Inject fault while probing module, if device_register() fails,
but the refcount of kobject is not decreased to 0, the name
allocated in dev_set_name() is leaked. Fix this by calling
put_device(), so that name can be freed in callback function
kobject_cleanup().

unreferenced object 0xffff88810152ad20 (size 8):
  comm "modprobe", pid 252, jiffies 4294849206 (age 22.713s)
  hex dump (first 8 bytes):
    68 77 73 69 6d 30 00 ff                          hwsim0..
  backtrace:
    [<000000009c3504ed>] __kmalloc_node_track_caller+0x44/0x1b0
    [<00000000c0228a5e>] kvasprintf+0xb5/0x140
    [<00000000cff8c21f>] kvasprintf_const+0x55/0x180
    [<0000000055a1e073>] kobject_set_name_vargs+0x56/0x150
    [<000000000a80b139>] dev_set_name+0xab/0xe0

Fixes: f36a111a74 ("wwan_hwsim: WWAN device simulator")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Acked-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Link: https://lore.kernel.org/r/20221018131607.1901641-1-yangyingliang@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-19 17:25:10 -07:00
..
iosm Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-10-03 17:44:18 -07:00
t7xx net: wwan: t7xx: Fix return type of t7xx_ccmni_start_xmit 2022-09-19 18:28:50 -07:00
Kconfig Revert "Merge branch 'wwan-t7xx-fw-flashing-and-coredump-support'" 2022-08-19 15:30:05 -07:00
Makefile net: wwan: t7xx: Add core components 2022-05-09 10:51:59 +01:00
mhi_wwan_ctrl.c net: wwan: mhi_wwan_ctrl: Add DUN2 to have a secondary AT port 2022-09-20 16:07:12 -07:00
mhi_wwan_mbim.c net: wwan: Fix MRU mismatch issue which may lead to data connection lost 2022-01-15 22:40:52 +00:00
qcom_bam_dmux.c net: wwan: qcom_bam_dmux: fix wrong pointer passed to IS_ERR() 2022-03-22 09:36:46 +01:00
rpmsg_wwan_ctrl.c net: wwan: Allow WWAN drivers to provide blocking tx and poll function 2021-06-18 13:13:40 -07:00
wwan_core.c termios: get rid of non-UAPI asm/termios.h 2022-09-09 10:44:35 +02:00
wwan_hwsim.c wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new() 2022-10-19 17:25:10 -07:00