src/sys/compat/linux, branch stable/13

compat/linux: Avoid waitid() kernel stack disclosure

2026-05-13T14:06:05Z

Reported by: Adam Crosser, Praetorian Reviewed by: philip Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D55812 (cherry picked from commit 9a9f93bcf1aa0059d759b2f3ea6faeb2760a11bd) (cherry picked from commit 9f8db9cc67fb86eeb2b645ce7f8aa748e99241a9) (cherry picked from commit a347e6e20e75ad6224afefcf650ef738c3de094d)

compat: linux: use appropriate variables for copying out old timers

2026-01-02T20:49:59Z

We copyout &l_oval but do the conversions into &l_val, leaving us with stack garbage. A build with an LLVM21 cross-toolchain seems to catch this. Reported by: Florian Limberger Reviewed by: markj Fixes: a1fd2911ddb06 ("linux(4): Implement timer_settime64 syscall.") MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D52985 (cherry picked from commit 541a98d7e28a8e4697ac2fa78dd4c4203c2c3a9c)

linux.h: don't redefine lower_32_bits if already defined

2024-12-28T18:15:53Z

systrace.c fails to build if we're using a common compiler.h for both openzfs and linuxkpi. The issue is easy enough to fix: don't redefined lower_32_bits if it's already defined in linux.h, since it's the least 'standardized'. This will allow systrace.c to build using an equivalent macro. MFC After: 3 days Sponsored by: Netflix (cherry picked from commit 481d5a4891648f0a6979a48689cc16fca80d4ab6)

linux(4): Add const qualifier to the value parameter of function handle_string()

2024-05-28T04:41:45Z

The content that `value` point to is not going to be altered by function handle_string(). MFC after: 1 week (cherry picked from commit 68c890b4433d3655c7df91cc43f89f4d6a8b35e4) (cherry picked from commit 1b3f88bc809526cc7cd22c88b4fdaadf1a2e5e75)

linux: require vnet(9) context in ifname_bsd_to_linux_name()

2024-03-11T16:12:36Z

This function is used by netlink(9) only. The netlink(9) taskqueue thread runs in the vnet of the socket whose request the thread is processing right now. This is a correct vnet and resetting it to vnet0 is incorrect. If the function is to be used by any other caller in addition to netlink(9), it would be caller's responsiblity to provide correct vnet(9). Reviewed by: melifaro, dchagin Differential Revision: https://reviews.freebsd.org/D44191 PR: 277286 (cherry picked from commit 2f5a315b307447f91891c96fb23c7333fa406f2f)

linuxolator: implement Linux' PROT_GROWSDOWN

2023-08-25T01:06:44Z

(cherry picked from commit 9b65fa69407808e710748875b0af98902110f128)

sys: Remove $FreeBSD$: one-line .c pattern

2023-08-23T17:43:25Z

Remove /^[\s*]*__FBSDID$"\$FreeBSD\$"$;?\s*\n/ Similar commit in current: (cherry picked from commit 685dc743dc3b)

sys: Remove $FreeBSD$: one-line .c comment pattern

2023-08-23T17:43:22Z

Remove /^/[*/]\s*\$FreeBSD\$.*\n/ Similar commit in current: (cherry picked from commit 71625ec9ad2a)

sys: Remove $FreeBSD$: one-line .h pattern

2023-08-23T17:43:22Z

Remove /^\s*\*+\s*\$FreeBSD\$.*$\n/ Similar commit in current: (cherry picked from commit 2ff63af9b88c)

sys: Remove $FreeBSD$: two-line .h pattern

2023-08-23T17:43:20Z

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/ Similar commit in current: (cherry picked from commit 95ee2897e98f)