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| author | Jonathan Corbet <corbet@lwn.net> | 2018-07-02 11:14:50 -0600 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2018-07-02 11:14:50 -0600 |
| commit | 5f6654094ff35a7a92eb76667788ef633595e4ea (patch) | |
| tree | 8404c5fb245cddbc6877b97a9bf53139c95da852 /arch/x86/mm/fault.c | |
| parent | 5105730fbf6789ff9e20837bdefe32e8ba133595 (diff) | |
| parent | 021c91791a5e7e85c567452f1be3e4c2c6cb6063 (diff) | |
| download | kernel_replicant_linux-5f6654094ff35a7a92eb76667788ef633595e4ea.tar.gz kernel_replicant_linux-5f6654094ff35a7a92eb76667788ef633595e4ea.tar.bz2 kernel_replicant_linux-5f6654094ff35a7a92eb76667788ef633595e4ea.zip | |
Merge tag 'v4.18-rc3' into docs-next
-rc1 broke the docs build due to changes in the e100/e1000 drivers; -rc3
got the fixes via the networking tree. Pull in -rc3 so that the docs tree
can actually build the docs again.
Diffstat (limited to 'arch/x86/mm/fault.c')
| -rw-r--r-- | arch/x86/mm/fault.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 9a84a0d08727..2aafa6ab6103 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -641,11 +641,6 @@ static int is_f00f_bug(struct pt_regs *regs, unsigned long address) return 0; } -static const char nx_warning[] = KERN_CRIT -"kernel tried to execute NX-protected page - exploit attempt? (uid: %d)\n"; -static const char smep_warning[] = KERN_CRIT -"unable to execute userspace code (SMEP?) (uid: %d)\n"; - static void show_fault_oops(struct pt_regs *regs, unsigned long error_code, unsigned long address) @@ -664,20 +659,18 @@ show_fault_oops(struct pt_regs *regs, unsigned long error_code, pte = lookup_address_in_pgd(pgd, address, &level); if (pte && pte_present(*pte) && !pte_exec(*pte)) - printk(nx_warning, from_kuid(&init_user_ns, current_uid())); + pr_crit("kernel tried to execute NX-protected page - exploit attempt? (uid: %d)\n", + from_kuid(&init_user_ns, current_uid())); if (pte && pte_present(*pte) && pte_exec(*pte) && (pgd_flags(*pgd) & _PAGE_USER) && (__read_cr4() & X86_CR4_SMEP)) - printk(smep_warning, from_kuid(&init_user_ns, current_uid())); + pr_crit("unable to execute userspace code (SMEP?) (uid: %d)\n", + from_kuid(&init_user_ns, current_uid())); } - printk(KERN_ALERT "BUG: unable to handle kernel "); - if (address < PAGE_SIZE) - printk(KERN_CONT "NULL pointer dereference"); - else - printk(KERN_CONT "paging request"); - - printk(KERN_CONT " at %px\n", (void *) address); + pr_alert("BUG: unable to handle kernel %s at %px\n", + address < PAGE_SIZE ? "NULL pointer dereference" : "paging request", + (void *)address); dump_pagetable(address); } |