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create-diff-object: Support for __warned placed in .data.once 

With kernel commit b1fca27d384 ("kernel debug: support resetting
WARN*_ONCE") the *_ONCE warnings are placed .data.once section.
Including .data.once section is valid, so add an check in
kpatch_verify_patchability() while checking for included invalid
sections.

Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
This commit is contained in:
Kamalesh Babulal 2018-03-07 13:03:18 +05:30
parent cac608a05a
commit 481d8c4bc2
1 changed files with 3 additions and 4 deletions
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7
kpatch-build/create-diff-object.c
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@ -1296,12 +1296,11 @@ static void kpatch_verify_patchability(struct kpatch_elf *kelf)
/*
* ensure we aren't including .data.* or .bss.*
* (.data.unlikely is ok b/c it only has __warned vars)
* (.data.unlikely and .data.once is ok b/c it only has __warned vars)
*/
if (sec->include && sec->status != NEW &&
(!strncmp(sec->name, ".data", 5) ||
!strncmp(sec->name, ".bss", 4)) &&
strcmp(sec->name, ".data.unlikely")) {
(!strncmp(sec->name, ".data", 5) || !strncmp(sec->name, ".bss", 4)) &&
(strcmp(sec->name, ".data.unlikely") && strcmp(sec->name, ".data.once"))) {
log_normal("data section %s selected for inclusion\n",
sec->name);
errs++;