From fb40b0537342e1acd5c2daf2ff6780c1d0d2883c Mon Sep 17 00:00:00 2001 From: Kuan-Ying Lee Date: Mon, 10 Jul 2023 17:28:46 +0800 Subject: scripts/gdb: fix 'lx-lsmod' show the wrong size 'lsmod' shows total core layout size, so we need to sum up all the sections in core layout in gdb scripts. / # lsmod kasan_test 200704 0 - Live 0xffff80007f640000 Before patch: (gdb) lx-lsmod Address Module Size Used by 0xffff80007f640000 kasan_test 36864 0 After patch: (gdb) lx-lsmod Address Module Size Used by 0xffff80007f640000 kasan_test 200704 0 Link: https://lkml.kernel.org/r/20230710092852.31049-1-Kuan-Ying.Lee@mediatek.com Fixes: b4aff7513df3 ("scripts/gdb: use mem instead of core_layout to get the module address") Signed-off-by: Kuan-Ying Lee Reviewed-by: Pankaj Raghav Cc: AngeloGioacchino Del Regno Cc: Chinwen Chang Cc: Jan Kiszka Cc: Kieran Bingham Cc: Luis Chamberlain Cc: Matthias Brugger Cc: Qun-Wei Lin Signed-off-by: Andrew Morton --- scripts/gdb/linux/constants.py.in | 3 +++ 1 file changed, 3 insertions(+) (limited to 'scripts/gdb/linux/constants.py.in') diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in index 50a92c4e9984..fab74ca9df6f 100644 --- a/scripts/gdb/linux/constants.py.in +++ b/scripts/gdb/linux/constants.py.in @@ -64,6 +64,9 @@ LX_GDBPARSED(IRQ_HIDDEN) /* linux/module.h */ LX_GDBPARSED(MOD_TEXT) +LX_GDBPARSED(MOD_DATA) +LX_GDBPARSED(MOD_RODATA) +LX_GDBPARSED(MOD_RO_AFTER_INIT) /* linux/mount.h */ LX_VALUE(MNT_NOSUID) -- cgit v1.2.3 From eb985b5dbf9791136700c555fbf964b6c07481ce Mon Sep 17 00:00:00 2001 From: Kuan-Ying Lee Date: Tue, 8 Aug 2023 16:30:14 +0800 Subject: scripts/gdb/aarch64: add aarch64 page operation helper commands and configs 1. Move page table debugging from mm.py to pgtable.py. 2. Add aarch64 kernel config and memory constants value. 3. Add below aarch64 page operation helper commands. page_to_pfn, page_to_phys, pfn_to_page, page_address, virt_to_phys, sym_to_pfn, pfn_to_kaddr, virt_to_page. 4. Only support CONFIG_SPARSEMEM_VMEMMAP=y now. Link: https://lkml.kernel.org/r/20230808083020.22254-5-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee Cc: AngeloGioacchino Del Regno Cc: Chinwen Chang Cc: Matthias Brugger Cc: Qun-Wei Lin Signed-off-by: Andrew Morton --- scripts/gdb/linux/constants.py.in | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'scripts/gdb/linux/constants.py.in') diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in index fab74ca9df6f..0805aeab3dcd 100644 --- a/scripts/gdb/linux/constants.py.in +++ b/scripts/gdb/linux/constants.py.in @@ -105,3 +105,26 @@ LX_CONFIG(CONFIG_X86_MCE_AMD) LX_CONFIG(CONFIG_X86_MCE) LX_CONFIG(CONFIG_X86_IO_APIC) LX_CONFIG(CONFIG_HAVE_KVM) +LX_CONFIG(CONFIG_NUMA) +LX_CONFIG(CONFIG_ARM64) +LX_CONFIG(CONFIG_ARM64_4K_PAGES) +LX_CONFIG(CONFIG_ARM64_16K_PAGES) +LX_CONFIG(CONFIG_ARM64_64K_PAGES) +if IS_BUILTIN(CONFIG_ARM64): + LX_VALUE(CONFIG_ARM64_PA_BITS) + LX_VALUE(CONFIG_ARM64_VA_BITS) + LX_VALUE(CONFIG_ARM64_PAGE_SHIFT) + LX_VALUE(CONFIG_ARCH_FORCE_MAX_ORDER) +LX_CONFIG(CONFIG_SPARSEMEM) +LX_CONFIG(CONFIG_SPARSEMEM_EXTREME) +LX_CONFIG(CONFIG_SPARSEMEM_VMEMMAP) +LX_CONFIG(CONFIG_KASAN) +LX_CONFIG(CONFIG_KASAN_GENERIC) +LX_CONFIG(CONFIG_KASAN_SW_TAGS) +LX_CONFIG(CONFIG_KASAN_HW_TAGS) +if IS_BUILTIN(CONFIG_KASAN_GENERIC) or IS_BUILTIN(CONFIG_KASAN_SW_TAGS): + LX_VALUE(CONFIG_KASAN_SHADOW_OFFSET) +LX_CONFIG(CONFIG_VMAP_STACK) +if IS_BUILTIN(CONFIG_NUMA): + LX_VALUE(CONFIG_NODES_SHIFT) +LX_CONFIG(CONFIG_DEBUG_VIRTUAL) -- cgit v1.2.3 From 0e1b240a4b17484d7d5733f33a9f83980a6988a0 Mon Sep 17 00:00:00 2001 From: Kuan-Ying Lee Date: Tue, 8 Aug 2023 16:30:15 +0800 Subject: scripts/gdb/stackdepot: add stackdepot support Add support for printing the backtrace of stackdepot handle. This is the preparation patch for dumping page_owner, slabtrace usage. Link: https://lkml.kernel.org/r/20230808083020.22254-6-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee Cc: AngeloGioacchino Del Regno Cc: Chinwen Chang Cc: Matthias Brugger Cc: Qun-Wei Lin Signed-off-by: Andrew Morton --- scripts/gdb/linux/constants.py.in | 1 + 1 file changed, 1 insertion(+) (limited to 'scripts/gdb/linux/constants.py.in') diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in index 0805aeab3dcd..f33be26253d2 100644 --- a/scripts/gdb/linux/constants.py.in +++ b/scripts/gdb/linux/constants.py.in @@ -128,3 +128,4 @@ LX_CONFIG(CONFIG_VMAP_STACK) if IS_BUILTIN(CONFIG_NUMA): LX_VALUE(CONFIG_NODES_SHIFT) LX_CONFIG(CONFIG_DEBUG_VIRTUAL) +LX_CONFIG(CONFIG_STACKDEPOT) -- cgit v1.2.3 From 2f060190efcee2781b3ba7cb12a6876b6e024e2d Mon Sep 17 00:00:00 2001 From: Kuan-Ying Lee Date: Tue, 8 Aug 2023 16:30:16 +0800 Subject: scripts/gdb/page_owner: add page owner support 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 : ldp x19, x20, [sp, #16] 0xffff80000862e4e0 : cbnz w22, 0xffff80000862e57c 0xffff8000086370c4 : mov x0, x27 0xffff8000086bc1cc : mov x24, x0 0xffff80000877d6d8 : mov w1, w0 0xffff8000082c8d18 : ldr x19, [sp, #16] 0xffff8000082ce0e8 : mov x19, x0 0xffff80000c1e41b4 <__dma_atomic_pool_init+172>: Cannot access memory at address 0xffff80000c1e41b4 0xffff80000c1e4298 : Cannot access memory at address 0xffff80000c1e4298 0xffff8000080161d4 : mov w21, w0 0xffff80000c1c1b50 : Cannot access memory at address 0xffff80000c1c1b50 0xffff80000acf87dc : bl 0xffff8000081ab100 0xffff800008018d00 : mrs x28, sp_el0 page last free stack trace: 0xffff8000086a6e8c : mov w2, w23 0xffff8000086aee1c : tst w0, #0xff 0xffff8000086af3f8 <__free_pages+292>: ldp x19, x20, [sp, #16] 0xffff80000c1f3214 : Cannot access memory at address 0xffff80000c1f3214 0xffff80000c20363c : Cannot access memory at address 0xffff80000c20363c 0xffff8000080161d4 : mov w21, w0 0xffff80000c1c1b50 : Cannot access memory at address 0xffff80000c1c1b50 0xffff80000acf87dc : bl 0xffff8000081ab100 0xffff800008018d00 : mrs x28, sp_el0 Link: https://lkml.kernel.org/r/20230808083020.22254-7-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee Cc: AngeloGioacchino Del Regno Cc: Chinwen Chang Cc: Matthias Brugger Cc: Qun-Wei Lin Signed-off-by: Andrew Morton --- scripts/gdb/linux/constants.py.in | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'scripts/gdb/linux/constants.py.in') diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in index f33be26253d2..52f61d65f430 100644 --- a/scripts/gdb/linux/constants.py.in +++ b/scripts/gdb/linux/constants.py.in @@ -18,6 +18,7 @@ #include #include #include +#include #include #include @@ -89,6 +90,11 @@ LX_GDBPARSED(RADIX_TREE_MAP_SIZE) LX_GDBPARSED(RADIX_TREE_MAP_SHIFT) LX_GDBPARSED(RADIX_TREE_MAP_MASK) +/* linux/page_ext.h */ +if IS_BUILTIN(CONFIG_PAGE_OWNER): + LX_GDBPARSED(PAGE_EXT_OWNER) + LX_GDBPARSED(PAGE_EXT_OWNER_ALLOCATED) + /* Kernel Configs */ LX_CONFIG(CONFIG_GENERIC_CLOCKEVENTS) LX_CONFIG(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) @@ -129,3 +135,4 @@ if IS_BUILTIN(CONFIG_NUMA): LX_VALUE(CONFIG_NODES_SHIFT) LX_CONFIG(CONFIG_DEBUG_VIRTUAL) LX_CONFIG(CONFIG_STACKDEPOT) +LX_CONFIG(CONFIG_PAGE_OWNER) -- cgit v1.2.3 From 79939c4a79bc643d399bd3fdd0f87100ea6b4362 Mon Sep 17 00:00:00 2001 From: Kuan-Ying Lee Date: Tue, 8 Aug 2023 16:30:17 +0800 Subject: scripts/gdb/slab: add slab support Add 'lx-slabinfo' and 'lx-slabtrace' support. This GDB scripts print slabinfo and slabtrace for user to analyze slab memory usage. Example output like below: (gdb) lx-slabinfo Pointer | name | active_objs | num_objs | objsize | objperslab | pagesperslab ------------------ | -------------------- | ------------ | ------------ | -------- | ----------- | ------------- 0xffff0000c59df480 | p9_req_t | 0 | 0 | 280 | 29 | 2 0xffff0000c59df280 | isp1760_qh | 0 | 0 | 160 | 25 | 1 0xffff0000c59df080 | isp1760_qtd | 0 | 0 | 184 | 22 | 1 0xffff0000c59dee80 | isp1760_urb_listite | 0 | 0 | 136 | 30 | 1 0xffff0000c59dec80 | asd_sas_event | 0 | 0 | 256 | 32 | 2 0xffff0000c59dea80 | sas_task | 0 | 0 | 448 | 36 | 4 0xffff0000c59de880 | bio-120 | 18 | 21 | 384 | 21 | 2 0xffff0000c59de680 | io_kiocb | 0 | 0 | 448 | 36 | 4 0xffff0000c59de480 | bfq_io_cq | 0 | 0 | 1504 | 21 | 8 0xffff0000c59de280 | bfq_queue | 0 | 0 | 720 | 22 | 4 0xffff0000c59de080 | mqueue_inode_cache | 1 | 28 | 1152 | 28 | 8 0xffff0000c59dde80 | v9fs_inode_cache | 0 | 0 | 832 | 39 | 8 ... (gdb) lx-slabtrace --cache_name kmalloc-1k 63 waste=16632/264 age=46856/46871/46888 pid=1 cpus=6, 0xffff800008720240 <__kmem_cache_alloc_node+236>: mov x22, x0 0xffff80000862a4fc : mov x21, x0 0xffff8000095d086c : mov x19, x0 0xffff8000095d0f98 : cmn x0, #0x1, lsl #12 0xffff80000c2677e8 : Cannot access memory at address 0xffff80000c2677e8 0xffff80000c265a10 : Cannot access memory at address 0xffff80000c265a10 0xffff80000c26d3c4 : Cannot access memory at address 0xffff80000c26d3c4 0xffff8000080161d4 : mov w21, w0 0xffff80000c1c1b58 : Cannot access memory at address 0xffff80000c1c1b58 0xffff80000acf1334 : bl 0xffff8000081ac040 0xffff800008018d00 : mrs x28, sp_el0 (gdb) lx-slabtrace --cache_name kmalloc-1k --free 428 age=4294958600 pid=0 cpus=0, Link: https://lkml.kernel.org/r/20230808083020.22254-8-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee Cc: AngeloGioacchino Del Regno Cc: Chinwen Chang Cc: Matthias Brugger Cc: Qun-Wei Lin Signed-off-by: Andrew Morton --- scripts/gdb/linux/constants.py.in | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'scripts/gdb/linux/constants.py.in') diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in index 52f61d65f430..03fa6d2cfe01 100644 --- a/scripts/gdb/linux/constants.py.in +++ b/scripts/gdb/linux/constants.py.in @@ -20,6 +20,7 @@ #include #include #include +#include #include /* We need to stringify expanded macros so that they can be parsed */ @@ -95,6 +96,16 @@ if IS_BUILTIN(CONFIG_PAGE_OWNER): LX_GDBPARSED(PAGE_EXT_OWNER) LX_GDBPARSED(PAGE_EXT_OWNER_ALLOCATED) +/* linux/slab.h */ +LX_GDBPARSED(SLAB_RED_ZONE) +LX_GDBPARSED(SLAB_POISON) +LX_GDBPARSED(SLAB_KMALLOC) +LX_GDBPARSED(SLAB_HWCACHE_ALIGN) +LX_GDBPARSED(SLAB_CACHE_DMA) +LX_GDBPARSED(SLAB_CACHE_DMA32) +LX_GDBPARSED(SLAB_STORE_USER) +LX_GDBPARSED(SLAB_PANIC) + /* Kernel Configs */ LX_CONFIG(CONFIG_GENERIC_CLOCKEVENTS) LX_CONFIG(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) @@ -136,3 +147,5 @@ if IS_BUILTIN(CONFIG_NUMA): LX_CONFIG(CONFIG_DEBUG_VIRTUAL) LX_CONFIG(CONFIG_STACKDEPOT) LX_CONFIG(CONFIG_PAGE_OWNER) +LX_CONFIG(CONFIG_SLUB_DEBUG) +LX_CONFIG(CONFIG_SLAB_FREELIST_HARDENED) -- cgit v1.2.3 From 852622bf3616034e11e20955aa2d8d40c200138e Mon Sep 17 00:00:00 2001 From: Kuan-Ying Lee Date: Tue, 8 Aug 2023 16:30:18 +0800 Subject: scripts/gdb/vmalloc: add vmallocinfo support This GDB script shows the vmallocinfo for user to analyze the vmalloc memory usage. Example output: 0xffff800008000000-0xffff800008009000 36864 pages=8 vmalloc 0xffff800008009000-0xffff80000800b000 8192 phys=0x8020000 ioremap 0xffff80000800b000-0xffff80000800d000 8192 pages=1 vmalloc 0xffff80000800d000-0xffff80000800f000 8192 pages=1 vmalloc 0xffff800008010000-0xffff80000ad30000 47316992 phys=0x40210000 vmap 0xffff80000ad30000-0xffff80000c1c0000 21561344 phys=0x42f30000 vmap 0xffff80000c1c0000-0xffff80000c370000 1769472 phys=0x443c0000 vmap 0xffff80000c370000-0xffff80000de90000 28442624 phys=0x44570000 vmap 0xffff80000de90000-0xffff80000f4c1000 23269376 phys=0x46090000 vmap 0xffff80000f4c1000-0xffff80000f4c3000 8192 pages=1 vmalloc 0xffff80000f4c3000-0xffff80000f4c5000 8192 pages=1 vmalloc 0xffff80000f4c5000-0xffff80000f4c7000 8192 pages=1 vmalloc Link: https://lkml.kernel.org/r/20230808083020.22254-9-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee Cc: AngeloGioacchino Del Regno Cc: Chinwen Chang Cc: Matthias Brugger Cc: Qun-Wei Lin Signed-off-by: Andrew Morton --- scripts/gdb/linux/constants.py.in | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'scripts/gdb/linux/constants.py.in') diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in index 03fa6d2cfe01..e3517d4ab8ec 100644 --- a/scripts/gdb/linux/constants.py.in +++ b/scripts/gdb/linux/constants.py.in @@ -22,6 +22,7 @@ #include #include #include +#include /* We need to stringify expanded macros so that they can be parsed */ @@ -91,6 +92,13 @@ LX_GDBPARSED(RADIX_TREE_MAP_SIZE) LX_GDBPARSED(RADIX_TREE_MAP_SHIFT) LX_GDBPARSED(RADIX_TREE_MAP_MASK) +/* linux/vmalloc.h */ +LX_VALUE(VM_IOREMAP) +LX_VALUE(VM_ALLOC) +LX_VALUE(VM_MAP) +LX_VALUE(VM_USERMAP) +LX_VALUE(VM_DMA_COHERENT) + /* linux/page_ext.h */ if IS_BUILTIN(CONFIG_PAGE_OWNER): LX_GDBPARSED(PAGE_EXT_OWNER) -- cgit v1.2.3