linux/scripts/gdb, branch v6.8

scripts/gdb/symbols: fix invalid escape sequence warning

2024-03-08T00:14:19Z

With python 3.12, '\.' results in this warning SyntaxWarning: invalid escape sequence '\.' Link: https://lkml.kernel.org/r/20240304012507.240380-1-andrewjballance@gmail.com Signed-off-by: Andrew Ballance Cc: Jan Kiszka Cc: Kieran Bingham Cc: Koudai Iwahori Cc: Kuan-Ying Lee Cc: Luis Chamberlain Cc: Pankaj Raghav Cc: Shuah Khan Signed-off-by: Andrew Morton

Merge tag 'kbuild-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2024-01-19T01:57:07Z

Pull Kbuild updates from Masahiro Yamada: - Make Kconfig parse the input .config more precisely - Support W=c and W=e options for Kconfig - Set Kconfig int/hex symbols to zero if the 'default' property is missing - Add .editorconfig - Add scripts/git.orderFile - Add a script to detect backward-incompatible changes in UAPI headers - Resolve the symlink passed to O= option properly - Use the user-supplied mtime for all files in the builtin initramfs, which provides better reproducible builds - Fix the direct execution of debian/rules for Debian package builds - Use build ID instead of the .gnu_debuglink section for the Debian dbg package * tag 'kbuild-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (53 commits) kbuild: deb-pkg: use debian/ for tmpdir kbuild: deb-pkg: move 'make headers' to build-arch kbuild: deb-pkg: do not search for 'scripts' directory under arch/ kbuild: deb-pkg: use build ID instead of debug link for dbg package kbuild: deb-pkg: use more debhelper commands in builddeb kbuild: deb-pkg: remove unneeded '-f $srctree/Makefile' in debian/rules kbuild: deb-pkg: allow to run debian/rules from output directory kbuild: deb-pkg: set DEB_* variables if debian/rules is directly executed kbuild: deb-pkg: squash scripts/package/deb-build-option to debian/rules kbuild: deb-pkg: factor out common Make options in debian/rules kbuild: deb-pkg: hard-code Build-Depends kbuild: deb-pkg: split debian/copyright from the mkdebian script gen_init_cpio: Apply mtime supplied by user to all file types kbuild: resolve symlinks for O= properly docs: dev-tools: Add UAPI checker documentation check-uapi: Introduce check-uapi.sh scripts: Introduce a default git.orderFile kconfig: WERROR unmet symbol dependency Add .editorconfig file for basic formatting kconfig: Use KCONFIG_CONFIG instead of .config ...

scripts/gdb: remove exception handling and refine print format

2023-12-11T01:21:49Z

1. When we crash on a page, we want to check what happened on this page instead of skipping this page by try-except block. Thus, removing the try-except block. 2. Remove redundant comma and print the task name properly. Link: https://lkml.kernel.org/r/20231127070404.4192-4-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee Cc: Andrey Konovalov Cc: AngeloGioacchino Del Regno Cc: Chinwen Chang Cc: Matthias Brugger Cc: Oleg Nesterov Cc: Qun-Wei Lin Signed-off-by: Andrew Morton

scripts/gdb/stackdepot: rename pool_index to pools_num

2023-12-11T01:21:48Z

After stackdepot evicting support patchset[1], we rename pool_index to pools_num. To avoid from the below issue, we rename consistently in gdb scripts. Python Exception : No symbol "pool_index" in current context. Error occurred in Python: No symbol "pool_index" in current context. [1] https://lore.kernel.org/linux-mm/cover.1700502145.git.andreyknvl@google.com/ Link: https://lkml.kernel.org/r/20231129065142.13375-3-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee Reviewed-by: Florian Fainelli Cc: Andrey Konovalov Cc: AngeloGioacchino Del Regno Cc: Chinwen Chang Cc: Matthias Brugger Cc: Oleg Nesterov Cc: Qun-Wei Lin Signed-off-by: Andrew Morton

scripts/gdb: fix lx-device-list-bus and lx-device-list-class

2023-12-07T00:12:49Z

After the conversion to bus_to_subsys() and class_to_subsys(), the gdb scripts listing the system buses and classes respectively was broken, fix those by returning the subsys_priv pointer and have the various caller de-reference either the 'bus' or 'class' structure members accordingly. Link: https://lkml.kernel.org/r/20231130043317.174188-1-florian.fainelli@broadcom.com Fixes: 7b884b7f24b4 ("driver core: class.c: convert to only use class_to_subsys") Signed-off-by: Florian Fainelli Tested-by: Kuan-Ying Lee Cc: Greg Kroah-Hartman Cc: Jan Kiszka Cc: Kieran Bingham Signed-off-by: Andrew Morton

scripts/gdb/tasks: fix lx-ps command error

2023-12-07T00:12:47Z

Since commit 8e1f385104ac ("kill task_struct->thread_group") remove the thread_group, we will encounter below issue. (gdb) lx-ps TASK PID COMM 0xffff800086503340 0 swapper/0 Python Exception : There is no member named thread_group. Error occurred in Python: There is no member named thread_group. We use signal->thread_head to iterate all threads instead. [Kuan-Ying.Lee@mediatek.com: v2] Link: https://lkml.kernel.org/r/20231129065142.13375-2-Kuan-Ying.Lee@mediatek.com Link: https://lkml.kernel.org/r/20231127070404.4192-2-Kuan-Ying.Lee@mediatek.com Fixes: 8e1f385104ac ("kill task_struct->thread_group") Signed-off-by: Kuan-Ying Lee Acked-by: Oleg Nesterov Tested-by: Florian Fainelli Cc: AngeloGioacchino Del Regno Cc: Chinwen Chang Cc: Kuan-Ying Lee Cc: Matthias Brugger Cc: Qun-Wei Lin Cc: Andrey Konovalov Signed-off-by: Andrew Morton

scripts: clean up IA-64 code

2023-12-03T09:51:48Z

A little more janitorial work after commit cf8e8658100d ("arch: Remove Itanium (IA-64) architecture"). Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier

scripts/gdb/vmalloc: disable on no-MMU

2023-11-01T19:46:59Z

vmap_area does not exist on no-MMU, therefore the GDB scripts fail to load: Traceback (most recent call last): File "<...>/vmlinux-gdb.py", line 51, in import linux.vmalloc File "<...>/scripts/gdb/linux/vmalloc.py", line 14, in vmap_area_ptr_type = vmap_area_type.get_type().pointer() ^^^^^^^^^^^^^^^^^^^^^^^^^ File "<...>/scripts/gdb/linux/utils.py", line 28, in get_type self._type = gdb.lookup_type(self._name) ^^^^^^^^^^^^^^^^^^^^^^^^^^^ gdb.error: No struct type named vmap_area. To fix this, disable the command and add an informative error message if CONFIG_MMU is not defined, following the example of lx-slabinfo. Link: https://lkml.kernel.org/r/20231031202235.2655333-2-ben.wolsieffer@hefring.com Fixes: 852622bf3616 ("scripts/gdb/vmalloc: add vmallocinfo support") Signed-off-by: Ben Wolsieffer Cc: Jan Kiszka Cc: Kieran Bingham Cc: Kuan-Ying Lee Cc: Signed-off-by: Andrew Morton

scripts/gdb: fix usage of MOD_TEXT not defined when CONFIG_MODULES=n

2023-11-01T19:46:59Z

MOD_TEXT is only defined if CONFIG_MODULES=y which lead to loading failure of the gdb scripts when kernel is built without CONFIG_MODULES=y: Reading symbols from vmlinux... Traceback (most recent call last): File "/foo/vmlinux-gdb.py", line 25, in import linux.constants File "/foo/scripts/gdb/linux/constants.py", line 14, in LX_MOD_TEXT = gdb.parse_and_eval("MOD_TEXT") ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ gdb.error: No symbol "MOD_TEXT" in current context. Add a conditional check on CONFIG_MODULES to fix this error. Link: https://lkml.kernel.org/r/20231031134848.119391-1-da.gomez@samsung.com Fixes: b4aff7513df3 ("scripts/gdb: use mem instead of core_layout to get the module address") Signed-off-by: Clément Léger Tested-by: Daniel Gomez Signed-off-by: Daniel Gomez Cc: Jan Kiszka Cc: Kieran Bingham Cc: Luis Chamberlain Cc: Pankaj Raghav Signed-off-by: Andrew Morton

scripts/gdb: add lx_current support for riscv

2023-11-01T19:46:59Z

csr_sscratch CSR holds current task_struct address when hart is in user space. Trap handler on entry spills csr_sscratch into "tp" (x2) register and zeroes out csr_sscratch CSR. Trap handler on exit reloads "tp" with expected user mode value and place current task_struct address again in csr_sscratch CSR. This patch assumes "tp" is pointing to task_struct. If value in csr_sscratch is numerically greater than "tp" then it assumes csr_sscratch is correct address of current task_struct. This logic holds when - hart is in user space, "tp" will be less than csr_sscratch. - hart is in kernel space but not in trap handler, "tp" will be more than csr_sscratch (csr_sscratch being equal to 0). - hart is executing trap handler - "tp" is still pointing to user mode but csr_sscratch contains ptr to task_struct. Thus numerically higher. - "tp" is pointing to task_struct but csr_sscratch now contains either 0 or numerically smaller value (transiently holds user mode tp) Link: https://lkml.kernel.org/r/20231026233837.612405-1-debug@rivosinc.com Signed-off-by: Deepak Gupta Reviewed-by: Andrew Jones Reviewed-by: Palmer Dabbelt Acked-by: Palmer Dabbelt Tested-by: Hsieh-Tseng Shen Cc: Albert Ou Cc: Glenn Washburn Cc: Jan Kiszka Cc: Jeff Xie Cc: Kieran Bingham Cc: Palmer Dabbelt Cc: Paul Walmsley Signed-off-by: Andrew Morton