libc: Add a man page caveat about the `w` modifier
In-tree Clang is unaware of the N2680 fixed-width modifier `w` and emits
a warning when used.
PR: 299631
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D60939
amdsmu: Print detailed stats for KRACKAN_POINT
Testing on a Dell AMD Ryzen AI 5 PRO 435 laptop shows that the same
diagnostic information is valid.
Reviewed by: obiwac
Sponsored by: The FreeBSD Foundation
locate.1: clarify bytes vs. characters
The database stores bytes, not characters. Remove the historical
note about 7-bit storage. Also document that -i ignores case only
for ASCII letters.
Reviewed by: ziaee
MFC after: 3 days
(cherry picked from commit a03b051f238eb78cfccbe834b0cc206e66d566e5)
find.1: rewrite the -s flag section for clarity
Restructure the description of -s flag:
1. what the option does
2. why it is useful (deterministic order, streaming output)
3. how its results can differ from `find | sort'
Reviewed by: ziaee
MFC after: 3 days
(cherry picked from commit ad0f86694157c998fec500e9a553550976cbc100)
find.1: fix rendering of find -s example
The period here is part of the literal string in the example. Adding a
space caused the example to be quoted wrongly. Instead, a trailing
zero-width space keeps the linter mandoc -T happy.
Reviewed by: ziaee
Differential Revision: https://reviews.freebsd.org/D59353
(cherry picked from commit 3581b6db62b1a2146014b3196f18bde3fc33010d)
linux: Implement PTRACE_GETREGSET NT_PRFPREG and NT_X86_XSTATE
Implement NT_PRFPREG and NT_X86_XSTATE for PTRACE_GETREGSET on amd64.
Chrome's crashpad handler uses these to collect floating-point and
extended CPU register state for crash dumps.
Other architectures retain the previous EINVAL stub behavior.
Signed-off-by: Ricardo Branco <rbranco at suse.de>
PR: 289285
Reviewed by: kib
Pull-Request: https://github.com/freebsd/freebsd-src/pull/2165
(cherry picked from commit c515e6040614434a9262ee8b5ac54b81476ec7ff)
linux: Add linux_pt_fpregset and bsd_to_linux_fpregset() for amd64
Add struct linux_pt_fpregset, the amd64 Linux NT_PRFPREG payload,
corresponding to user_i387_struct in Linux. The struct describes
the 512-byte FXSAVE area as exposed by PTRACE_GETREGSET.
Add bsd_to_linux_fpregset() to translate from FreeBSD's struct fpreg
to struct linux_pt_fpregset. Fields are extracted from the fpr_env[]
array which stores the FXSAVE environment packed as four 64-bit words.
The FP and XMM register banks are bulk-copied as opaque byte arrays.
Signed-off-by: Ricardo Branco <rbranco at suse.de>
Reviewed by: kib
Pull-Request: https://github.com/freebsd/freebsd-src/pull/2165
(cherry picked from commit b84d31ee74535a0026ff83f2a34c07b7557f9785)
linux: Ignore sigaction(2) flags SA_UNSUPPORTED and SA_EXPOSE_TAGBITS
SA_UNSUPPORTED was introduced in Linux 5.11 to probe support
for other flags such as SA_EXPOSE_TAGBITS, introduced
at the same time. Ignore both.
Signed-off-by: Ricardo Branco <rbranco at suse.de>
PR: 289285
Reviewed by: pouria, kib
Pull-Request: https://github.com/freebsd/freebsd-src/pull/2163
(cherry picked from commit fdea83a5f63b881ade91c6cc9dfbf173137512c5)
amd64/arm64 pmap: consistently clear PGA_WRITEABLE
We don't consistently clear PGA_WRITEABLE on fictitious, managed pages.
Some functions do, e.g., pmap_remove_all(), but several do not. At
worst, this is just a pessimization, but there is no good reason to be
inconsistent. Clear PGA_WRITEABLE in those that previously did not by
introducing (and using) the helper function pmap_page_is_mapped_locked()
that implements the correct test.
(cherry picked from commit 37321270b630d891e48851f81dd6d077ebd6b635)
rtld: fix leak in get_program_var_addr() on the error path
Fixes: 1e370f038778 ("rtld: stop using unbound alloca()")
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
dl_iterate_phdr(3): do not return garbage for objects not using TLS
For objects without a TLS segment, tlsindex is zero. tls_get_addr_slow()
then reads dtv_slots[-1], which is dtv_size, and returns it as the TLS
address. Set dlpi_tls_data to NULL for such objects instead.
Fixes: d36d68161517 ("rtld dl_iterate_phdr(): dlpi_tls_data is wrong")
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
rtld: some cosmetics in donelist_init()
Add a missing word in the comment.
Make each assignment a separate statement.
Fix formatting.
Fixes: 1e370f038778 ("rtld: stop using unbound alloca()")
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
vfs_register: prevent kernel crash
vfs_register hashes the filesystem name and uses it for sysctl oids.
A filesystem name which hashes to 0 crashes in sysctl_register_oid().
Map 0 to 1 to prevent the kernel crash.
This can be tested with "udf2" as the filesystem name.
MFC after: 1 month
MFC to: stable/15 stable/14
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D59839
(cherry picked from commit 3897678132e71df70dbb18bf8e2f19124beee5d7)
vfs_register: prevent kernel crash
vfs_register hashes the filesystem name and uses it for sysctl oids.
A filesystem name which hashes to 0 crashes in sysctl_register_oid().
Map 0 to 1 to prevent the kernel crash.
This can be tested with "udf2" as the filesystem name.
MFC after: 1 month
MFC to: stable/15 stable/14
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D59839
(cherry picked from commit 3897678132e71df70dbb18bf8e2f19124beee5d7)
Merge commit 4d7292e58078 from llvm-project (by Minsoo Choo):
[libunwind] Unwind through AArch64 FreeBSD signal trampolines (#235065)
Retried from https://reviews.llvm.org/D155066.
Recognize signal trampolines using KERN_PROC_SIGTRAMP when unwind
metadata is unavailable. Restore the interrupted PC, LR, SP, general
registers, and valid floating-point registers.
Add coverage for unwinding out of an interrupted leaf function on both
regular and alternate signal stacks.
Assisted-by: GPT
MFC after: 1 week
