| commit | 26920a2961f7cc86bfbdb2184c0ec261d5629c2f | |
| author | Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com> | |
| Tue, 31 Jan 2017 22:05:17 +0000 (31 20:05 -0200) | ||
| committer | Laurent Vivier <laurent@vivier.eu> | |
| Thu, 16 Feb 2017 14:29:30 +0000 (16 15:29 +0100) | ||
| tree | 2ada2985c606d7b19b0b6cca105d2e5a951a0832 | treesnapshot (tar.gz zip) |
| parent | 35f2fd04ce8bd3eaad4b7790abb19fa2a56d7314 | commitdiff |
linux-user: fill target sigcontext struct accordingly
A segfault is noticed when an emulated program uses any of ucontext
regs fields. Risu detected this issue in the following operation when
handling a signal:
ucontext_t *uc = (ucontext_t*)uc;
uc->uc_mcontext.regs->nip += 4;
but this works fine:
uc->uc_mcontext.gp_regs[PT_NIP] += 4;
This patch set regs to a valid location as well as other sigcontext
fields.
Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1485900317-3256-1-git-send-email-joserz@linux.vnet.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
A segfault is noticed when an emulated program uses any of ucontext
regs fields. Risu detected this issue in the following operation when
handling a signal:
ucontext_t *uc = (ucontext_t*)uc;
uc->uc_mcontext.regs->nip += 4;
but this works fine:
uc->uc_mcontext.gp_regs[PT_NIP] += 4;
This patch set regs to a valid location as well as other sigcontext
fields.
Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1485900317-3256-1-git-send-email-joserz@linux.vnet.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
| linux-user/signal.c | diffblobblamehistory |