Revision b5d281f6c16dd432b618bdfd36ddba1a58d5b603 authored by Christian Marangi on 19 June 2022, 22:03:51 UTC, committed by Chanwoo Choi on 29 June 2022, 20:11:17 UTC
On a devfreq PROBE_DEFER, the freq_table in the driver profile struct, is never reset and may be leaved in an undefined state. This comes from the fact that we store the freq_table in the driver profile struct that is commonly defined as static and not reset on PROBE_DEFER. We currently skip the reinit of the freq_table if we found it's already defined since a driver may declare his own freq_table. This logic is flawed in the case devfreq core generate a freq_table, set it in the profile struct and then PROBE_DEFER, freeing the freq_table. In this case devfreq will found a NOT NULL freq_table that has been freed, skip the freq_table generation and probe the driver based on the wrong table. To fix this and correctly handle PROBE_DEFER, use a local freq_table and max_state in the devfreq struct and never modify the freq_table present in the profile struct if it does provide it. Fixes: 0ec09ac2cebe ("PM / devfreq: Set the freq_table of devfreq device") Cc: stable@vger.kernel.org Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
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test | ||
.gitignore | -rw-r--r-- | 106 bytes |
Makefile | -rw-r--r-- | 3.3 KB |
algos.c | -rw-r--r-- | 6.2 KB |
altivec.uc | -rw-r--r-- | 3.3 KB |
avx2.c | -rw-r--r-- | 16.9 KB |
avx512.c | -rw-r--r-- | 17.8 KB |
int.uc | -rw-r--r-- | 3.7 KB |
mktables.c | -rw-r--r-- | 3.9 KB |
mmx.c | -rw-r--r-- | 3.6 KB |
neon.c | -rw-r--r-- | 2.0 KB |
neon.uc | -rw-r--r-- | 3.8 KB |
recov.c | -rw-r--r-- | 3.3 KB |
recov_avx2.c | -rw-r--r-- | 8.8 KB |
recov_avx512.c | -rw-r--r-- | 9.4 KB |
recov_neon.c | -rw-r--r-- | 2.6 KB |
recov_neon_inner.c | -rw-r--r-- | 2.3 KB |
recov_s390xc.c | -rw-r--r-- | 2.7 KB |
recov_ssse3.c | -rw-r--r-- | 9.0 KB |
s390vx.uc | -rw-r--r-- | 3.8 KB |
sse1.c | -rw-r--r-- | 4.6 KB |
sse2.c | -rw-r--r-- | 15.8 KB |
unroll.awk | -rw-r--r-- | 423 bytes |
vpermxor.uc | -rw-r--r-- | 2.7 KB |
x86.h | -rw-r--r-- | 2.1 KB |
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