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The pagemap_ioctl selftest allocates memory via calloc() in several places but does not check the return values. If calloc() fails, the subsequent code will dereference a NULL pointer and crash. Additionally, in sanity_tests(), the calloc() failure check incorrectly uses MAP_FAILED (the mmap() error constant) instead of NULL. Since calloc() returns NULL on failure, the check never triggers and a failed allocation goes undetected. Add NULL checks after each calloc() call, and fix the wrong error constant in sanity_tests(). Use ksft_exit_fail_msg() consistent with the existing error handling pattern in the file. Link: https://lore.kernel.org/20260721063611.342-1-yanlonglong@kylinos.cn Signed-off-by: longlong yan <yanlonglong@kylinos.cn> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Reviewed-by: SJ Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| .. | ||
| accounting | ||
| arch | ||
| bootconfig | ||
| bpf | ||
| build | ||
| certs | ||
| cgroup | ||
| counter | ||
| crypto | ||
| debugging | ||
| dma | ||
| docs | ||
| firewire | ||
| firmware | ||
| gpio | ||
| hv | ||
| iio | ||
| include | ||
| kvm/kvm_stat | ||
| laptop | ||
| leds | ||
| lib | ||
| memory-model | ||
| mm | ||
| net | ||
| objtool | ||
| pcmcia | ||
| perf | ||
| power | ||
| rcu | ||
| sched | ||
| sched_ext | ||
| scripts | ||
| sound | ||
| spi | ||
| testing | ||
| thermal | ||
| time | ||
| tracing | ||
| unittests | ||
| usb | ||
| verification | ||
| virtio | ||
| wmi | ||
| workqueue | ||
| writeback | ||
| Makefile | ||