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| author | Subhash Jadavani <subhashj@codeaurora.org> | 2016-06-17 18:44:14 -0700 |
|---|---|---|
| committer | Kyle Yan <kyan@codeaurora.org> | 2016-06-21 15:14:34 -0700 |
| commit | 479ce8b7e82a3814e53a5ad41082bb537b990de7 (patch) | |
| tree | 687c17495f331c5f204f909f33f667ac0e91928f /tools/perf/scripts/python | |
| parent | 3351162b699c4c0e10fa734e70e0626a28efada6 (diff) | |
mmc: host: sdhci-msm: fix NULL pointer dereference
We are seeing the kernel panic due to NULL pointer dereference with
following call trace:
sdhci_msm_set_clock+0x59c/0xa28
sdhci_do_set_ios+0xf4/0x740
sdhci_set_ios+0x28/0x3c
mmc_set_ios+0xac/0x1ec
__mmc_set_clock+0x2c/0x3c
mmc_ungate_clock+0x20/0x28
mmc_host_clk_hold+0x54/0xc4
mmc_power_off+0x1c/0x70
mmc_rescan+0x250/0x27c
process_one_work+0x240/0x420
worker_thread+0x268/0x390
kthread+0xf8/0x100
This is happending when eMMC initialization is failing in HS400 mode.
sdhci_msm_set_clock() might be accessing the card pointer after it
was deallocated, this change adds the safety checks to avoid NULL
dereference.
Change-Id: I895b8b33cce4173100d58acf690e57b5f4e69081
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions