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| author | Tom de Vries <tdevries@suse.de> | 2021-02-05 17:47:07 +0100 |
|---|---|---|
| committer | Tom de Vries <tdevries@suse.de> | 2021-02-05 17:47:07 +0100 |
| commit | 0e857c82883cff04ccc8868762c78b0e94ccde91 (patch) | |
| tree | 2da77697ed1016db5c8fadd40e36327f88d57085 /gdb/break-catch-syscall.c | |
| parent | bdfea17ea9bbd9f92ad19a70d770af42473d9c07 (diff) | |
| download | gdb-0e857c82883cff04ccc8868762c78b0e94ccde91.zip gdb-0e857c82883cff04ccc8868762c78b0e94ccde91.tar.gz gdb-0e857c82883cff04ccc8868762c78b0e94ccde91.tar.bz2 | |
[gdb/breakpoints] Fix segfault for catch syscall -1
Using a hello world a.out, I run into a segfault:
...
$ gcc hello.c
$ gdb -batch a.out -ex "catch syscall -1" -ex r
Catchpoint 1 (syscall -1)
Aborted (core dumped)
...
Fix this by erroring out if a negative syscall number is used in the
catch syscall command.
Tested on x86_64-linux.
gdb/ChangeLog:
2021-02-05 Tom de Vries <tdevries@suse.de>
PR breakpoints/27313
* break-catch-syscall.c (catch_syscall_split_args): Reject negative
syscall numbers.
gdb/testsuite/ChangeLog:
2021-02-05 Tom de Vries <tdevries@suse.de>
PR breakpoints/27313
* gdb.base/catch-syscall.exp: Check that "catch syscall -1" is
rejected.
Diffstat (limited to 'gdb/break-catch-syscall.c')
| -rw-r--r-- | gdb/break-catch-syscall.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gdb/break-catch-syscall.c b/gdb/break-catch-syscall.c index 9772ac0..7335377 100644 --- a/gdb/break-catch-syscall.c +++ b/gdb/break-catch-syscall.c @@ -390,6 +390,8 @@ catch_syscall_split_args (const char *arg) syscall_number = (int) strtol (cur_name, &endptr, 0); if (*endptr == '\0') { + if (syscall_number < 0) + error (_("Unknown syscall number '%d'."), syscall_number); get_syscall_by_number (gdbarch, syscall_number, &s); result.push_back (s.number); } |