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pstore: do not use message compression without lock

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pstore_compress() uses static stream buffer for zlib-deflate which
easily crashes when several concurrent threads use one shared state.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Konstantin Khlebnikov
2015-05-21 09:26:19 -07:00
committed by Tony Luck
parent e26081808e
commit f0e2efcfd2
1 changed files with 1 additions and 1 deletions
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2
fs/pstore/platform.c
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@@ -299,7 +299,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
bool compressed; bool compressed;
size_t total_len; size_t total_len;
if (big_oops_buf) { if (big_oops_buf && is_locked) {
dst = big_oops_buf; dst = big_oops_buf;
hsize = sprintf(dst, "%s#%d Part%u\n", why, hsize = sprintf(dst, "%s#%d Part%u\n", why,
oopscount, part); oopscount, part);