88 lines
3.7 KiB
Diff
88 lines
3.7 KiB
Diff
Without this patch, the MH test suite would fail when building with
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glibc 2.26, with 'ali' segfaulting like this:
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Core was generated by `/tmp/guix-build-mailutils-3.4.drv-0/mailutils-3.4/mh/.libs/ali -a ./Mail/mh_ali'.
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Program terminated with signal SIGSEGV, Segmentation fault.
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#0 0x00007f8eac263a14 in hash (
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name=0x72642e342e332d73 <error: Cannot access memory at address 0x72642e342e332d73>, hash_num=0) at assoc.c:102
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102 for (i = 0; *name; name++)
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(gdb) bt
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#0 0x00007f8eac263a14 in hash (
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name=0x72642e342e332d73 <error: Cannot access memory at address 0x72642e342e332d73>, hash_num=0) at assoc.c:102
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#1 0x00007f8eac263e6b in assoc_find_slot (assoc=0xaa59e0,
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name=0x72642e342e332d73 <error: Cannot access memory at address 0x72642e342e332d73>, install=0x0, slot=0x7ffcddcbf2b8) at assoc.c:219
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#2 0x00007f8eac264124 in mu_assoc_lookup (assoc=0xaa59e0,
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name=0x72642e342e332d73 <error: Cannot access memory at address 0x72642e342e332d73>, dataptr=0x7ffcddcbf2e0) at assoc.c:308
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#3 0x00007f8eac29e8ac in mu_ident_deref (
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name=0x72642e342e332d73 <error: Cannot access memory at address 0x72642e342e332d73>) at ident.c:98
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#4 0x00007f8eac29f8a6 in mu_locus_point_deinit (pt=0xaa5718) at locus.c:48
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#5 0x00007f8eac29fa1b in mu_locus_range_deinit (lr=0xaa5718) at locus.c:99
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#6 0x00007f8eac29f9db in mu_locus_range_copy (dest=0xaa5718,
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src=0x622be0 <ali_yylloc>) at locus.c:89
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#7 0x0000000000408a2a in push_source (name=0xaa74bc "mh_aliases2", fail=1)
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at mh_alias_lex.l:170
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commit b330af9008e4c9168b379867b854f5900a539ad7
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Author: Sergey Poznyakoff <gray@gnu.org>
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Date: Sat Nov 18 10:15:48 2017 +0200
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Fix the use of uninitialized memory
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* mh/mh_alias_lex.l (push_source): Initialize locus range prior to copying
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to it.
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* libmailutils/cfg/parser.y (mu_cfg_tree_create_node): Likewise.
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* libmu_sieve/util.c: (mu_sieve_value_create): Likewise.
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diff --git a/libmailutils/cfg/parser.y b/libmailutils/cfg/parser.y
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index 4503c7781..3436b8d90 100644
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--- a/libmailutils/cfg/parser.y
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+++ b/libmailutils/cfg/parser.y
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@@ -1134,10 +1134,9 @@ mu_cfg_tree_create_node (struct mu_cfg_tree *tree,
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np = mu_alloc (size);
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np->type = type;
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+ mu_locus_range_init (&np->locus);
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if (loc)
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mu_locus_range_copy (&np->locus, loc);
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- else
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- memset (&np->locus, 0, sizeof np->locus);
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p = (char*) (np + 1);
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np->tag = p;
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strcpy (p, tag);
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diff --git a/libmu_sieve/sieve-lex.l b/libmu_sieve/sieve-lex.l
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index fd145bfe1..f14e80194 100644
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--- a/libmu_sieve/sieve-lex.l
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+++ b/libmu_sieve/sieve-lex.l
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@@ -190,6 +190,7 @@ push_source (const char *name)
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{
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ctx = mu_sieve_malloc (mu_sieve_machine, sizeof (*ctx));
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ctx->trk = trk;
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+ mu_locus_range_init (&ctx->incl_range);
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mu_locus_range_copy (&ctx->incl_range, &yylloc);
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ctx->i_node = sieve_source_inode;
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ctx->input = input_stream;
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diff --git a/libmu_sieve/util.c b/libmu_sieve/util.c
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index 8d62a60c2..7d71b5509 100644
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--- a/libmu_sieve/util.c
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+++ b/libmu_sieve/util.c
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@@ -55,6 +55,7 @@ mu_sieve_value_create (mu_sieve_machine_t mach, mu_sieve_data_type type,
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val->locus.end.mu_line = locus->end.mu_line;
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val->locus.end.mu_col = locus->end.mu_col;
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+ mu_locus_range_init (&val->locus);
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mu_locus_range_copy (&val->locus, locus);
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switch (type)
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{
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diff --git a/mh/mh_alias_lex.l b/mh/mh_alias_lex.l
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index 371353ed3..b97264b38 100644
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--- a/mh/mh_alias_lex.l
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+++ b/mh/mh_alias_lex.l
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@@ -167,6 +167,7 @@ push_source (const char *name, int fail)
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{
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ctx = mu_alloc (sizeof (*ctx));
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ctx->trk = trk;
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+ mu_locus_range_init (&ctx->incl_range);
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mu_locus_range_copy (&ctx->incl_range, &yylloc);
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ctx->exec_p = exec_p;
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ctx->i_node = ali_source_inode;
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