mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-15 23:25:07 +00:00
2f060190ef
This GDB script prints page owner information for user to analyze the memory usage or memory corruption issue. Example output from an aarch64 system: (gdb) lx-dump-page-owner --pfn 655360 page_owner tracks the page as allocated Page last allocated via order 0, gfp_mask: 0x8, pid: 1, tgid: 1 ("swapper/0\000\000\000\000\000\000"), ts 1295948880 ns, free_ts 1011852016 ns PFN: 655360, Flags: 0x3fffc0000000000 0xffff8000086ab964 <post_alloc_hook+452>: ldp x19, x20, [sp, #16] 0xffff80000862e4e0 <split_map_pages+344>: cbnz w22, 0xffff80000862e57c <split_map_pages+500> 0xffff8000086370c4 <isolate_freepages_range+556>: mov x0, x27 0xffff8000086bc1cc <alloc_contig_range+808>: mov x24, x0 0xffff80000877d6d8 <cma_alloc+772>: mov w1, w0 0xffff8000082c8d18 <dma_alloc_from_contiguous+104>: ldr x19, [sp, #16] 0xffff8000082ce0e8 <atomic_pool_expand+208>: mov x19, x0 0xffff80000c1e41b4 <__dma_atomic_pool_init+172>: Cannot access memory at address 0xffff80000c1e41b4 0xffff80000c1e4298 <dma_atomic_pool_init+92>: Cannot access memory at address 0xffff80000c1e4298 0xffff8000080161d4 <do_one_initcall+176>: mov w21, w0 0xffff80000c1c1b50 <kernel_init_freeable+952>: Cannot access memory at address 0xffff80000c1c1b50 0xffff80000acf87dc <kernel_init+36>: bl 0xffff8000081ab100 <async_synchronize_full> 0xffff800008018d00 <ret_from_fork+16>: mrs x28, sp_el0 page last free stack trace: 0xffff8000086a6e8c <free_unref_page_prepare+796>: mov w2, w23 0xffff8000086aee1c <free_unref_page+96>: tst w0, #0xff 0xffff8000086af3f8 <__free_pages+292>: ldp x19, x20, [sp, #16] 0xffff80000c1f3214 <init_cma_reserved_pageblock+220>: Cannot access memory at address 0xffff80000c1f3214 0xffff80000c20363c <cma_init_reserved_areas+1284>: Cannot access memory at address 0xffff80000c20363c 0xffff8000080161d4 <do_one_initcall+176>: mov w21, w0 0xffff80000c1c1b50 <kernel_init_freeable+952>: Cannot access memory at address 0xffff80000c1c1b50 0xffff80000acf87dc <kernel_init+36>: bl 0xffff8000081ab100 <async_synchronize_full> 0xffff800008018d00 <ret_from_fork+16>: mrs x28, sp_el0 Link: https://lkml.kernel.org/r/20230808083020.22254-7-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Cc: Chinwen Chang <chinwen.chang@mediatek.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Qun-Wei Lin <qun-wei.lin@mediatek.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
---|---|---|
.. | ||
atomic | ||
basic | ||
clang-tools | ||
coccinelle | ||
dtc | ||
dummy-tools | ||
gcc-plugins | ||
gdb | ||
genksyms | ||
kconfig | ||
ksymoops | ||
mod | ||
package | ||
selinux | ||
tracing | ||
.gitignore | ||
as-version.sh | ||
asn1_compiler.c | ||
bloat-o-meter | ||
bootgraph.pl | ||
bpf_doc.py | ||
cc-can-link.sh | ||
cc-version.sh | ||
check-git | ||
check-sysctl-docs | ||
check_extable.sh | ||
checkdeclares.pl | ||
checkincludes.pl | ||
checkkconfigsymbols.py | ||
checkpatch.pl | ||
checkstack.pl | ||
checksyscalls.sh | ||
checkversion.pl | ||
cleanfile | ||
cleanpatch | ||
coccicheck | ||
config | ||
const_structs.checkpatch | ||
decode_stacktrace.sh | ||
decodecode | ||
depmod.sh | ||
dev-needs.sh | ||
diffconfig | ||
documentation-file-ref-check | ||
export_report.pl | ||
extract-ikconfig | ||
extract-module-sig.pl | ||
extract-sys-certs.pl | ||
extract-vmlinux | ||
extract_xc3028.pl | ||
faddr2line | ||
file-size.sh | ||
find-unused-docs.sh | ||
gcc-x86_32-has-stack-protector.sh | ||
gcc-x86_64-has-stack-protector.sh | ||
gen-randstruct-seed.sh | ||
generate_initcall_order.pl | ||
generate_rust_analyzer.py | ||
generate_rust_target.rs | ||
get_abi.pl | ||
get_dvb_firmware | ||
get_feat.pl | ||
get_maintainer.pl | ||
gfp-translate | ||
head-object-list.txt | ||
headerdep.pl | ||
headers_install.sh | ||
insert-sys-cert.c | ||
install.sh | ||
is_rust_module.sh | ||
jobserver-exec | ||
kallsyms.c | ||
Kbuild.include | ||
Kconfig.include | ||
kernel-doc | ||
ld-version.sh | ||
leaking_addresses.pl | ||
Lindent | ||
link-vmlinux.sh | ||
Makefile | ||
Makefile.asm-generic | ||
Makefile.build | ||
Makefile.clang | ||
Makefile.clean | ||
Makefile.compiler | ||
Makefile.debug | ||
Makefile.defconf | ||
Makefile.dtbinst | ||
Makefile.extrawarn | ||
Makefile.gcc-plugins | ||
Makefile.headersinst | ||
Makefile.host | ||
Makefile.kasan | ||
Makefile.kcov | ||
Makefile.kcsan | ||
Makefile.kmsan | ||
Makefile.lib | ||
Makefile.modfinal | ||
Makefile.modinst | ||
Makefile.modpost | ||
Makefile.package | ||
Makefile.randstruct | ||
Makefile.ubsan | ||
Makefile.userprogs | ||
Makefile.vmlinux | ||
Makefile.vmlinux_o | ||
makelst | ||
markup_oops.pl | ||
min-tool-version.sh | ||
misc-check | ||
mkcompile_h | ||
mksysmap | ||
mkuboot.sh | ||
module.lds.S | ||
modules-check.sh | ||
nsdeps | ||
objdiff | ||
objdump-func | ||
orc_hash.sh | ||
pahole-flags.sh | ||
pahole-version.sh | ||
parse-maintainers.pl | ||
patch-kernel | ||
profile2linkerlist.pl | ||
prune-kernel | ||
recordmcount.c | ||
recordmcount.h | ||
recordmcount.pl | ||
relocs_check.sh | ||
remove-stale-files | ||
rust_is_available.sh | ||
rust_is_available_bindgen_libclang.h | ||
setlocalversion | ||
show_delta | ||
sign-file.c | ||
sorttable.c | ||
sorttable.h | ||
spdxcheck-test.sh | ||
spdxcheck.py | ||
spdxexclude | ||
spelling.txt | ||
sphinx-pre-install | ||
split-man.pl | ||
stackdelta | ||
stackusage | ||
subarch.include | ||
syscallhdr.sh | ||
syscallnr.sh | ||
syscalltbl.sh | ||
tags.sh | ||
test_fortify.sh | ||
tools-support-relr.sh | ||
unifdef.c | ||
ver_linux | ||
xen-hypercalls.sh | ||
xz_wrap.sh |