Release: crash-8.0.3-1 Changes: [1] rebase to 8.0.3 [2] backport the latest patches from upstream Resolves: rhbz#2231768 Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
54 lines
1.8 KiB
Diff
54 lines
1.8 KiB
Diff
From f0b59524624b83d634b3fa8ab4ab3acf9ccce9df Mon Sep 17 00:00:00 2001
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From: Kazuhito Hagio <k-hagio-ab@nec.com>
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Date: Mon, 10 Jul 2023 15:05:36 +0900
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Subject: [PATCH 20/30] Fix segmentation fault by "tree -s" option with Maple
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Tree
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Without the patch, do_mt_entry() can call dump_struct_members_for_tree()
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with a NULL entry, and parse_for_member_extended() will cause a
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segmentation fault during strncpy().
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This is caused by "tree -t maple -s struct.member.member" style multiple
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level member access:
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crash> tree -t maple -s irq_desc.irq_data.irq sparse_irqs
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ffff936980188400
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irq_data.irq = 0,
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ffff93698018be00
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irq_data.irq = 1,
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...
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ffff936980f38e00
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irq_data.irq = 19,
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Segmentation fault (core dumped)
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(gdb) bt
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#0 0x00007faaf8e51635 in __strncpy_avx2 () from /lib64/libc.so.6
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#1 0x00000000005e5927 in parse_for_member_extended (dm=dm@entry=0x7ffcb9e6d860, ...
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#2 0x0000000000603c45 in dump_struct_member (s=s@entry=0x128cde0 <shared_bufs+1024> ...
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#3 0x0000000000513cf5 in dump_struct_members_for_tree (td=td@entry=0x7ffcb9e6eeb0, ...
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#4 0x0000000000651f15 in do_mt_entry (entry=0, min=min@entry=20, max=max@entry=119, ...
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...
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Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
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Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
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---
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maple_tree.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/maple_tree.c b/maple_tree.c
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index eccd273105a6..8c804d0cb80d 100644
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--- a/maple_tree.c
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+++ b/maple_tree.c
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@@ -313,7 +313,7 @@ static void do_mt_entry(ulong entry, ulong min, ulong max, uint depth,
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fprintf(fp, " index: %ld position: %s/%u\n",
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++(*global_index), path, index);
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- if (td->structname) {
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+ if (td->structname && entry) {
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if (td->flags & TREE_STRUCT_RADIX_10)
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print_radix = 10;
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else if (td->flags & TREE_STRUCT_RADIX_16)
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--
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2.37.1
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