src/sys/ddb, branch releng/15.0

ddb ps: Print again the effective GID, separately

2025-09-18T08:50:22+00:00

Following commit be1f7435ef218b1d ("kern: start tracking cr_gid outside
of cr_groups[]"), cr_groups[] doesn't contain the effective GID anymore.
Fix the 'show proc' DDB command to show it again, and make it stand out
with respect to the supplementary ones.

Fixes:          be1f7435ef218b1d ("kern: start tracking cr_gid outside of cr_groups[]")
MFC after:      9 days
Sponsored by:   The FreeBSD Foundation
Differential Revision:  https://reviews.freebsd.org/D52251

(cherry picked from commit de974a0f1b73e79466c25f3c85fe727004576fea)

machine/stdarg.h -> sys/stdarg.h

2025-06-11T16:39:02+00:00

Switch to using sys/stdarg.h for va_list type and va_* builtins.

Make an attempt to insert the include in a sensible place.  Where
style(9) was followed this is easy, where it was ignored, aim for the
first block of sys/*.h headers and don't get too fussy or try to fix
other style bugs.

Reviewed by:	imp
Exp-run by:	antoine (PR 286274)
Pull Request:	https://github.com/freebsd/freebsd-src/pull/1595

proc: Remove kernel stack swapping support, part 6

2024-07-29T01:43:18+00:00

- Remove most checks of the P_INMEM flag.
- Some uses remain since a few userspace tools, e.g., ps(1) and top(1)
  expect the flag to be set.  These can be cleaned up but the code has
  most likely been copy-pasted elsewhere and while linger for a long
  time.

Tested by:	pho
Reviewed by:	alc, imp, kib
Differential Revision:	https://reviews.freebsd.org/D46117

thread: Remove kernel stack swapping support, part 4

2024-07-29T01:40:22+00:00

- Remove the IS_SWAPPED thread inhibitor state.
- Remove all uses of TD_IS_SWAPPED() in the kernel.
- Remove the TDF_CANSWAP flag.
- Remove the P_SWAPPINGOUT and P_SWAPPINGIN flags.

Tested by:	pho
Reviewed by:	alc, imp, kib
Differential Revision:	https://reviews.freebsd.org/D46115

db_pprint: Properly handle complex pointer types

2024-07-21T17:31:59+00:00

The existing pretty-printing code fails to properly print complex
pointer types. This commit fixes this behaviour by traversing the
chain of CTF types until a base type is encountered.

Approved by: markj (mentor)
Fixes: c21bc6f3c242

db_pprint: Fix offset calculation for struct members

2024-07-21T17:31:48+00:00

The struct pretty-printing code uses the ctm_offset field in
struct ctf_member_v3 to calculate the address of a struct member.
However, the code treats this as a byte offset rather than the
offset in bits, leading to wrong values being printed.
Fix this by diving with ctm_offset by NBBY.

Approved by: markj (mentor)
Fixes: c21bc6f3c242

ddb: make db_error reliably no-return

2024-07-09T17:59:27+00:00

Most code assumes db_error does not return, but according to
kdb_reenter_silent, there may be cases where it could.  Instead, panic
if kdb_reenter_silent returns and mark the routine as __dead2.  This
addresses gcc warnings.

Reported by:	GCC -Wmaybe-uninitialized
Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D45918

sys/ddb: Add hardware breakpoint support to ddb

2024-04-12T09:32:41+00:00

As with hardware watchpoints add support for hardware breakpoints. The
command is only enabled on architectures that report support for them.
Currently no architectures do, however arm64 will add support in a
future change.

Reviewed by:	jhb (earlier version)
Sponsored by:	Arm Ltd
Sponsored by:	Innovate UK
Differential Revision:	https://reviews.freebsd.org/D22191

ddb: Start to generalise breakpoints

2024-04-12T09:29:13+00:00

To allow for hardware breakpoints it is useful to reuse the same
management code. Start to generalise the code by moving common data
into a new struct and pas this to internal functions to work with.

Sponsored by:	Arm Ltd
Differential Revision:	https://reviews.freebsd.org/D44461

ddb: Fix format string errors in db_pprint.c

2024-04-03T18:14:13+00:00

Reported by:	bapt
Fixes:	aada453dcbaa ("ddb: Properly pretty-print non-labeled enum values")