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| author |   James Morris <james.morris@microsoft.com> | 2018-06-25 09:20:40 -0700 |
|---|---|---|
| committer | James Morris <james.morris@microsoft.com> | 2018-06-25 09:20:40 -0700 |
| commit | 57b54d74dd5c559bd35f2affaf11d8828aaf5733 (patch) | |
| tree | 025d99f0d6b298fbdbf3ce942ec7868131444090 /arch/x86/mm/fault.c | |
| parent | MAINTAINERS: remove the outdated "LINUX SECURITY MODULE (LSM) FRAMEWORK" entry (diff) | |
| parent | Linux 4.18-rc2 (diff) | |
| download | wireguard-linux-57b54d74dd5c559bd35f2affaf11d8828aaf5733.tar.xz wireguard-linux-57b54d74dd5c559bd35f2affaf11d8828aaf5733.zip | |
Merge tag 'v4.18-rc2' into next-general
Merge to Linux 4.18-rc2 for security subsystem developers.
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/mm/fault.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 73bd8c95ac71..9a84a0d08727 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -209,6 +209,7 @@ force_sig_info_fault(int si_signo, int si_code, unsigned long address, unsigned lsb = 0; siginfo_t info; + clear_siginfo(&info); info.si_signo = si_signo; info.si_errno = 0; info.si_code = si_code; @@ -439,7 +440,7 @@ static noinline int vmalloc_fault(unsigned long address) if (pgd_none(*pgd_k)) return -1; - if (pgtable_l5_enabled) { + if (pgtable_l5_enabled()) { if (pgd_none(*pgd)) { set_pgd(pgd, *pgd_k); arch_flush_lazy_mmu_mode(); @@ -454,7 +455,7 @@ static noinline int vmalloc_fault(unsigned long address) if (p4d_none(*p4d_k)) return -1; - if (p4d_none(*p4d) && !pgtable_l5_enabled) { + if (p4d_none(*p4d) && !pgtable_l5_enabled()) { set_p4d(p4d, *p4d_k); arch_flush_lazy_mmu_mode(); } else { @@ -828,6 +829,8 @@ static inline void show_signal_msg(struct pt_regs *regs, unsigned long error_code, unsigned long address, struct task_struct *tsk) { + const char *loglvl = task_pid_nr(tsk) > 1 ? KERN_INFO : KERN_EMERG; + if (!unhandled_signal(tsk, SIGSEGV)) return; @@ -835,13 +838,14 @@ show_signal_msg(struct pt_regs *regs, unsigned long error_code, return; printk("%s%s[%d]: segfault at %lx ip %px sp %px error %lx", - task_pid_nr(tsk) > 1 ? KERN_INFO : KERN_EMERG, - tsk->comm, task_pid_nr(tsk), address, + loglvl, tsk->comm, task_pid_nr(tsk), address, (void *)regs->ip, (void *)regs->sp, error_code); print_vma_addr(KERN_CONT " in ", regs->ip); printk(KERN_CONT "\n"); + + show_opcodes((u8 *)regs->ip, loglvl); } static void |