tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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pidfs: add missing BUILD_BUG_ON() assert on struct pidfd_info

Validate that the size of struct pidfd_info is correctly updated.

Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-4-ca449b7b7aa0@kernel.org
Fixes: 1d8db6fd698d ("pidfs, coredump: add PIDFD_INFO_COREDUMP")
Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>

Christian Brauner d8fc51d8 4061c43a

+2
+2
fs/pidfs.c
··· 306 306 const struct cred *c; 307 307 __u64 mask; 308 308 309 + BUILD_BUG_ON(sizeof(struct pidfd_info) != PIDFD_INFO_SIZE_VER1); 310 + 309 311 if (!uinfo) 310 312 return -EINVAL; 311 313 if (usize < PIDFD_INFO_SIZE_VER0)