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authorLinus Torvalds <torvalds@linux-foundation.org>2022-11-25 10:18:25 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2022-11-25 10:18:25 -0800
commit0b1dcc2cf55ae6523c6fbd0d741b3ac28c9f4536 (patch)
tree52ece52748953ac55342149f0fab672974b5f89e /lib
parentb308570957332422032e34b0abb9233790344e2b (diff)
parentde3db3f883a82c4800f4af0ae2cc3b96a408ee9b (diff)
Merge tag 'mm-hotfixes-stable-2022-11-24' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull hotfixes from Andrew Morton: "24 MM and non-MM hotfixes. 8 marked cc:stable and 16 for post-6.0 issues. There have been a lot of hotfixes this cycle, and this is quite a large batch given how far we are into the -rc cycle. Presumably a reflection of the unusually large amount of MM material which went into 6.1-rc1" * tag 'mm-hotfixes-stable-2022-11-24' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (24 commits) test_kprobes: fix implicit declaration error of test_kprobes nilfs2: fix nilfs_sufile_mark_dirty() not set segment usage as dirty mm/cgroup/reclaim: fix dirty pages throttling on cgroup v1 mm: fix unexpected changes to {failslab|fail_page_alloc}.attr swapfile: fix soft lockup in scan_swap_map_slots hugetlb: fix __prep_compound_gigantic_page page flag setting kfence: fix stack trace pruning proc/meminfo: fix spacing in SecPageTables mm: multi-gen LRU: retry folios written back while isolated mailmap: update email address for Satya Priya mm/migrate_device: return number of migrating pages in args->cpages kbuild: fix -Wimplicit-function-declaration in license_is_gpl_compatible MAINTAINERS: update Alex Hung's email address mailmap: update Alex Hung's email address mm: mmap: fix documentation for vma_mas_szero mm/damon/sysfs-schemes: skip stats update if the scheme directory is removed mm/memory: return vm_fault_t result from migrate_to_ram() callback mm: correctly charge compressed memory to its memcg ipc/shm: call underlying open/close vm_ops gcov: clang: fix the buffer overflow issue ...
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig.debug1
-rw-r--r--lib/fault-inject.c13
2 files changed, 9 insertions, 5 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index c3c0b077ade3..a1005415f0f4 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -2107,6 +2107,7 @@ config KPROBES_SANITY_TEST
depends on DEBUG_KERNEL
depends on KPROBES
depends on KUNIT
+ select STACKTRACE if ARCH_CORRECT_STACKTRACE_ON_KRETPROBE
default KUNIT_ALL_TESTS
help
This option provides for testing basic kprobes functionality on
diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index 96e092de5b72..adb2f9355ee6 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -41,9 +41,6 @@ EXPORT_SYMBOL_GPL(setup_fault_attr);
static void fail_dump(struct fault_attr *attr)
{
- if (attr->no_warn)
- return;
-
if (attr->verbose > 0 && __ratelimit(&attr->ratelimit_state)) {
printk(KERN_NOTICE "FAULT_INJECTION: forcing a failure.\n"
"name %pd, interval %lu, probability %lu, "
@@ -103,7 +100,7 @@ static inline bool fail_stacktrace(struct fault_attr *attr)
* http://www.nongnu.org/failmalloc/
*/
-bool should_fail(struct fault_attr *attr, ssize_t size)
+bool should_fail_ex(struct fault_attr *attr, ssize_t size, int flags)
{
if (in_task()) {
unsigned int fail_nth = READ_ONCE(current->fail_nth);
@@ -146,13 +143,19 @@ bool should_fail(struct fault_attr *attr, ssize_t size)
return false;
fail:
- fail_dump(attr);
+ if (!(flags & FAULT_NOWARN))
+ fail_dump(attr);
if (atomic_read(&attr->times) != -1)
atomic_dec_not_zero(&attr->times);
return true;
}
+
+bool should_fail(struct fault_attr *attr, ssize_t size)
+{
+ return should_fail_ex(attr, size, 0);
+}
EXPORT_SYMBOL_GPL(should_fail);
#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS