kernel/linux.git/scripts/gdb/linux, branch v6.3.3

scripts/gdb: fix lx-timerlist for Python3

2023-05-11T14:17:37+00:00

commit 7362042f3556528e9e9b1eb5ce8d7a3a6331476b upstream. Below incompatibilities between Python2 and Python3 made lx-timerlist fail to run under Python3. o xrange() is replaced by range() in Python3 o bytes and str are different types in Python3 o the return value of Inferior.read_memory() is memoryview object in Python3 akpm: cc stable so that older kernels are properly debuggable under newer Python. Link: https://lkml.kernel.org/r/TYCP286MB2146EE1180A4D5176CBA8AB2C6819@TYCP286MB2146.JPNP286.PROD.OUTLOOK.COM Signed-off-by: Peng Liu Reviewed-by: Jan Kiszka Cc: Florian Fainelli Cc: Kieran Bingham Cc: Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman

scripts/gdb: raise error with reduced debugging information

2023-05-11T14:17:27+00:00

[ Upstream commit 8af055ae25bff48f57227f5e3d48a4306f3dd1c4 ] If CONFIG_DEBUG_INFO_REDUCED is enabled in the kernel configuration, we will typically not be able to load vmlinux-gdb.py and will fail with: Traceback (most recent call last): File "/home/fainelli/work/buildroot/output/arm64/build/linux-custom/vmlinux-gdb.py", line 25, in import linux.utils File "/home/fainelli/work/buildroot/output/arm64/build/linux-custom/scripts/gdb/linux/utils.py", line 131, in atomic_long_counter_offset = atomic_long_type.get_type()['counter'].bitpos KeyError: 'counter' Rather be left wondering what is happening only to find out that reduced debug information is the cause, raise an eror. This was not typically a problem until e3c8d33e0d62 ("scripts/gdb: fix 'lx-dmesg' on 32 bits arch") but it has since then. Link: https://lkml.kernel.org/r/20230406215252.1580538-1-f.fainelli@gmail.com Fixes: e3c8d33e0d62 ("scripts/gdb: fix 'lx-dmesg' on 32 bits arch") Signed-off-by: Florian Fainelli Cc: Antonio Borneo Cc: Jan Kiszka Cc: John Ogness Cc: Kieran Bingham Cc: Petr Mladek Signed-off-by: Andrew Morton Signed-off-by: Sasha Levin

scripts/gdb: bail early if there are no generic PD

2023-05-11T14:17:26+00:00

[ Upstream commit f19c3c2959e465209ade1a7a699e6cbf4359ce78 ] Avoid generating an exception if there are no generic power domain(s) registered: (gdb) lx-genpd-summary domain status children /device runtime status ---------------------------------------------------------------------- Python Exception : No symbol "gpd_list" in current context. Error occurred in Python: No symbol "gpd_list" in current context. (gdb) quit [f.fainelli@gmail.com: correctly invoke gdb_eval_or_none] Link: https://lkml.kernel.org/r/20230327185746.3856407-1-f.fainelli@gmail.com Link: https://lkml.kernel.org/r/20230323231659.3319941-1-f.fainelli@gmail.com Fixes: 8207d4a88e1e ("scripts/gdb: add lx-genpd-summary command") Signed-off-by: Florian Fainelli Cc: Jan Kiszka Cc: Kieran Bingham Cc: Leonard Crestez Cc: Stephen Boyd Signed-off-by: Andrew Morton Signed-off-by: Sasha Levin

scripts/gdb: bail early if there are no clocks

2023-05-11T14:17:26+00:00

[ Upstream commit 1d7adbc74c009057ed9dc3112f388e91a9c79acc ] Avoid generating an exception if there are no clocks registered: (gdb) lx-clk-summary enable prepare protect clock count count count rate ------------------------------------------------------------------------ Python Exception : No symbol "clk_root_list" in current context. Error occurred in Python: No symbol "clk_root_list" in current context. Link: https://lkml.kernel.org/r/20230323225246.3302977-1-f.fainelli@gmail.com Fixes: d1e9710b63d8 ("scripts/gdb: initial clk support: lx-clk-summary") Signed-off-by: Florian Fainelli Cc: Jan Kiszka Cc: Kieran Bingham Cc: Leonard Crestez Cc: Stephen Boyd Signed-off-by: Andrew Morton Signed-off-by: Sasha Levin

Merge tag 'mm-nonmm-stable-2023-02-20-15-29' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-02-24T01:55:40+00:00

Pull non-MM updates from Andrew Morton: "There is no particular theme here - mainly quick hits all over the tree. Most notable is a set of zlib changes from Mikhail Zaslonko which enhances and fixes zlib's use of S390 hardware support: 'lib/zlib: Set of s390 DFLTCC related patches for kernel zlib'" * tag 'mm-nonmm-stable-2023-02-20-15-29' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (55 commits) Update CREDITS file entry for Jesper Juhl sparc: allow PM configs for sparc32 COMPILE_TEST hung_task: print message when hung_task_warnings gets down to zero. arch/Kconfig: fix indentation scripts/tags.sh: fix the Kconfig tags generation when using latest ctags nilfs2: prevent WARNING in nilfs_dat_commit_end() lib/zlib: remove redundation assignement of avail_in dfltcc_gdht() lib/Kconfig.debug: do not enable DEBUG_PREEMPT by default lib/zlib: DFLTCC always switch to software inflate for Z_PACKET_FLUSH option lib/zlib: DFLTCC support inflate with small window lib/zlib: Split deflate and inflate states for DFLTCC lib/zlib: DFLTCC not writing header bits when avail_out == 0 lib/zlib: fix DFLTCC ignoring flush modes when avail_in == 0 lib/zlib: fix DFLTCC not flushing EOBS when creating raw streams lib/zlib: implement switching between DFLTCC and software lib/zlib: adjust offset calculation for dfltcc_state nilfs2: replace WARN_ONs for invalid DAT metadata block requests scripts/spelling.txt: add "exsits" pattern and fix typo instances fs: gracefully handle ->get_block not mapping bh in __mpage_writepage cramfs: Kconfig: fix spelling & punctuation ...

scripts/gdb: fix 'lx-current' for x86

2023-02-09T23:56:51+00:00

When printing the name of the current process, it will report an error: (gdb) p $lx_current().comm Python Exception No symbol "current_task" in current context.: Error occurred in Python: No symbol "current_task" in current context. Because e57ef2ed97c1 ("x86: Put hot per CPU variables into a struct") changed it. Link: https://lkml.kernel.org/r/20230204090139.1789264-1-xiehuan09@gmail.com Fixes: e57ef2ed97c1 ("x86: Put hot per CPU variables into a struct") Signed-off-by: Jeff Xie Cc: Jan Kiszka Cc: Signed-off-by: Andrew Morton

scripts/gdb: add mm introspection utils

2023-02-03T06:50:03+00:00

This command provides a way to traverse the entire page hierarchy by a given virtual address on x86. In addition to qemu's commands info tlb/info mem it provides the complete information about the paging structure for an arbitrary virtual address. It supports 4KB/2MB/1GB and 5 level paging. Here is an example output for 2MB success translation: (gdb) translate-vm address cr3: cr3 binary data 0x1085be003 next entry physical address 0x1085be000 --- bit 3 page level write through False bit 4 page level cache disabled False level 4: entry address 0xffff8881085be7f8 page entry binary data 0x800000010ac83067 next entry physical address 0x10ac83000 --- bit 0 entry present True bit 1 read/write access allowed True bit 2 user access allowed True bit 3 page level write through False bit 4 page level cache disabled False bit 5 entry has been accessed True bit 7 page size False bit 11 restart to ordinary False bit 63 execute disable True level 3: entry address 0xffff88810ac83a48 page entry binary data 0x101af7067 next entry physical address 0x101af7000 --- bit 0 entry present True bit 1 read/write access allowed True bit 2 user access allowed True bit 3 page level write through False bit 4 page level cache disabled False bit 5 entry has been accessed True bit 7 page size False bit 11 restart to ordinary False bit 63 execute disable False level 2: entry address 0xffff888101af7368 page entry binary data 0x80000001634008e7 page size 2MB page physical address 0x163400000 --- bit 0 entry present True bit 1 read/write access allowed True bit 2 user access allowed True bit 3 page level write through False bit 4 page level cache disabled False bit 5 entry has been accessed True bit 7 page size True bit 6 page dirty True bit 8 global translation False bit 11 restart to ordinary True bit 12 pat False bits (59, 62) protection key 0 bit 63 execute disable True [dmitrii.bundin.a@gmail.com: add SPDX line, other tweaks] Link: https://lkml.kernel.org/r/20230113175151.22278-1-dmitrii.bundin.a@gmail.com [akpm@linux-foundation.org: s/physicall/physical/] Link: https://lkml.kernel.org/r/20230102171014.31408-1-dmitrii.bundin.a@gmail.com Signed-off-by: Dmitrii Bundin Acked by: Mike Rapoport (IBM) Cc: Greg Kroah-Hartman Cc: Ingo Molnar Cc: Jan Kiszka Cc: Kieran Bingham Cc: Vlastimil Babka Signed-off-by: Andrew Morton

Merge tag 'printk-for-5.20-sane' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

2022-08-05T16:54:36+00:00

Pull printk updates from Petr Mladek: - Allow reading kernel log in gdb even on 32 bits systems - More granular check of the buffer usage in printf selftest - Clang warning fix * tag 'printk-for-5.20-sane' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: lib/test_printf.c: fix clang -Wformat warnings scripts/gdb: fix 'lx-dmesg' on 32 bits arch lib/test_printf.c: split write-beyond-buffer check in two

scripts/gdb: Fix gdb 'lx-symbols' command

2022-07-21T17:40:55+00:00

Currently the command 'lx-symbols' in gdb exits with the error`Function "do_init_module" not defined in "kernel/module.c"`. This occurs because the file kernel/module.c was moved to kernel/module/main.c. Fix this breakage by changing the path to "kernel/module/main.c" in LoadModuleBreakpoint. Signed-off-by: Khalid Masum Acked-by: Luis Chamberlain Fixes: cfc1d277891e ("module: Move all into module/") Reviewed-by: Douglas Anderson Signed-off-by: Linus Torvalds

scripts/gdb: fix 'lx-dmesg' on 32 bits arch

2022-07-21T13:32:52+00:00

The type atomic_long_t can have size 4 or 8 bytes, depending on CONFIG_64BIT; it's only content, the field 'counter', is either an int or a s64 value. Current code incorrectly uses the fixed size utils.read_u64() to read the field 'counter' inside atomic_long_t. On 32 bits architectures reading the last element 'tail_id' of the struct prb_desc_ring: struct prb_desc_ring { ... atomic_long_t tail_id; }; causes the utils.read_u64() to access outside the boundary of the struct and the gdb command 'lx-dmesg' exits with error: Python Exception : index out of range Error occurred in Python: index out of range Query the really used atomic_long_t counter type size. Link: https://lore.kernel.org/r/20220617143758.137307-1-antonio.borneo@foss.st.com Fixes: e60768311af8 ("scripts/gdb: update for lockless printk ringbuffer") Signed-off-by: Antonio Borneo [pmladek@suse.com: Query the really used atomic_long_t counter type size] Tested-by: Antonio Borneo Reviewed-by: John Ogness Signed-off-by: Petr Mladek Link: https://lore.kernel.org/r/20220719122831.19890-1-pmladek@suse.com