f53ab5a2bf
commit 6cf1a126de2992b4efe1c3c4d398f8de4aed6e3f upstream.
Kmemleak reported the following leak info in try_smi_init():
unreferenced object 0xffff00018ecf9400 (size 1024):
comm "modprobe", pid 2707763, jiffies 4300851415 (age 773.308s)
backtrace:
[<000000004ca5b312>] __kmalloc+0x4b8/0x7b0
[<00000000953b1072>] try_smi_init+0x148/0x5dc [ipmi_si]
[<000000006460d325>] 0xffff800081b10148
[<0000000039206ea5>] do_one_initcall+0x64/0x2a4
[<00000000601399ce>] do_init_module+0x50/0x300
[<000000003c12ba3c>] load_module+0x7a8/0x9e0
[<00000000c246fffe>] __se_sys_init_module+0x104/0x180
[<00000000eea99093>] __arm64_sys_init_module+0x24/0x30
[<0000000021b1ef87>] el0_svc_common.constprop.0+0x94/0x250
[<0000000070f4f8b7>] do_el0_svc+0x48/0xe0
[<000000005a05337f>] el0_svc+0x24/0x3c
[<000000005eb248d6>] el0_sync_handler+0x160/0x164
[<0000000030a59039>] el0_sync+0x160/0x180
The problem was that when an error occurred before handlers registration
and after allocating `new_smi->si_sm`, the variable wouldn't be freed in
the error handling afterwards since `shutdown_smi()` hadn't been
registered yet. Fix it by adding a `kfree()` in the error handling path
in `try_smi_init()`.
Cc: stable@vger.kernel.org # 4.19+
Fixes:
|
||
|---|---|---|
| .. | ||
| bt-bmc.c | ||
| ipmb_dev_int.c | ||
| ipmi_bt_sm.c | ||
| ipmi_devintf.c | ||
| ipmi_dmi.c | ||
| ipmi_dmi.h | ||
| ipmi_kcs_sm.c | ||
| ipmi_msghandler.c | ||
| ipmi_plat_data.c | ||
| ipmi_plat_data.h | ||
| ipmi_powernv.c | ||
| ipmi_poweroff.c | ||
| ipmi_si_hardcode.c | ||
| ipmi_si_hotmod.c | ||
| ipmi_si_intf.c | ||
| ipmi_si_mem_io.c | ||
| ipmi_si_parisc.c | ||
| ipmi_si_pci.c | ||
| ipmi_si_platform.c | ||
| ipmi_si_port_io.c | ||
| ipmi_si_sm.h | ||
| ipmi_si.h | ||
| ipmi_smic_sm.c | ||
| ipmi_ssif.c | ||
| ipmi_watchdog.c | ||
| Kconfig | ||
| kcs_bmc_aspeed.c | ||
| kcs_bmc_npcm7xx.c | ||
| kcs_bmc.c | ||
| kcs_bmc.h | ||
| Makefile | ||