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Date: Tue, 03 Mar 2015 22:11:28 +0000 From: Ben Hutchings <ben@...adent.org.uk> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org CC: akpm@...ux-foundation.org Subject: [PATCH 3.2 02/24] x86: mm/fault: Fix semaphore imbalance 3.2.68-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Ben Hutchings <ben@...adent.org.uk> When backporting commit 33692f27597f ('vm: add VM_FAULT_SIGSEGV handling support') I didn't notice that it depended on a recent change to the locking context of mm_fault_error() (commit 7fb08eca4527, 'x86: mm: move mmap_sem unlock from mm_fault_error() to caller'). That isn't easily applicable to 3.2, so instead make sure we drop mm->mmap_sem on the new branch of mm_fault_error(). Signed-off-by: Ben Hutchings <ben@...adent.org.uk> --- --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -878,7 +878,7 @@ mm_fault_error(struct pt_regs *regs, uns VM_FAULT_HWPOISON_LARGE)) do_sigbus(regs, error_code, address, fault); else if (fault & VM_FAULT_SIGSEGV) - bad_area_nosemaphore(regs, error_code, address); + bad_area(regs, error_code, address); else BUG(); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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