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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 03:10:12 +00:00
![]() There are two memory leaks reported by kmemleak:
unreferenced object 0xffff888114b20200 (size 128):
comm "modprobe", pid 4846, jiffies 4295146524 (age 401.345s)
hex dump (first 32 bytes):
e0 62 57 09 81 88 ff ff e0 62 57 09 81 88 ff ff .bW......bW.....
01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff815bcd82>] kmalloc_trace+0x22/0x60
[<ffffffff83d35c78>] __hw_addr_add_ex+0x198/0x6c0
[<ffffffff83d3989d>] dev_addr_init+0x13d/0x230
[<ffffffff83d1063d>] alloc_netdev_mqs+0x10d/0xe50
[<ffffffff82b4a06e>] alloc_hdlcdev+0x2e/0x80
[<ffffffffa016a741>] fst_add_one+0x601/0x10e0 [farsync]
...
unreferenced object 0xffff88810b85b000 (size 1024):
comm "modprobe", pid 4846, jiffies 4295146523 (age 401.346s)
hex dump (first 32 bytes):
00 00 b0 02 00 c9 ff ff 00 70 0a 00 00 c9 ff ff .........p......
00 00 00 f2 00 00 00 f3 0a 00 00 00 02 00 00 00 ................
backtrace:
[<ffffffff815bcd82>] kmalloc_trace+0x22/0x60
[<ffffffffa016a294>] fst_add_one+0x154/0x10e0 [farsync]
[<ffffffff82060e83>] local_pci_probe+0xd3/0x170
...
The root cause is traced to the netdev and fst_card_info are not freed
when removes one fst in fst_remove_one(), which may trigger oom if
repeated insmod and rmmod module.
Fix it by adding free_netdev() and kfree() in fst_remove_one(), just as
the operations on the error handling path in fst_add_one().
Fixes:
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.. | ||
.gitignore | ||
c101.c | ||
farsync.c | ||
farsync.h | ||
fsl_ucc_hdlc.c | ||
fsl_ucc_hdlc.h | ||
hd64570.c | ||
hd64570.h | ||
hd64572.c | ||
hd64572.h | ||
hdlc.c | ||
hdlc_cisco.c | ||
hdlc_fr.c | ||
hdlc_ppp.c | ||
hdlc_raw.c | ||
hdlc_raw_eth.c | ||
hdlc_x25.c | ||
ixp4xx_hss.c | ||
Kconfig | ||
lapbether.c | ||
Makefile | ||
n2.c | ||
pc300too.c | ||
pci200syn.c | ||
slic_ds26522.c | ||
slic_ds26522.h | ||
wanxl.c | ||
wanxl.h | ||
wanxlfw.inc_shipped | ||
wanxlfw.S |