Subject: [merged] ptrace-sh-revert-hw_breakpoints-fix-racy-access-to-ptrace-breakpoints.patch removed from -mm tree To: oleg@xxxxxxxxxx,benh@xxxxxxxxxxxxxxxxxxx,fweisbec@xxxxxxxxx,jan.kratochvil@xxxxxxxxxx,lethal@xxxxxxxxxxxx,linux@xxxxxxxxxxxxxxxx,mikey@xxxxxxxxxxx,mingo@xxxxxxxxxx,paulus@xxxxxxxxx,prasad@xxxxxxxxxxxxxxxxxx,will.deacon@xxxxxxx,mm-commits@xxxxxxxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Tue, 09 Jul 2013 16:21:09 -0700 The patch titled Subject: ptrace/sh: revert "hw_breakpoints: Fix racy access to ptrace breakpoints" has been removed from the -mm tree. Its filename was ptrace-sh-revert-hw_breakpoints-fix-racy-access-to-ptrace-breakpoints.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Oleg Nesterov <oleg@xxxxxxxxxx> Subject: ptrace/sh: revert "hw_breakpoints: Fix racy access to ptrace breakpoints" This reverts commit e0ac8457d020c ("hw_breakpoints: Fix racy access to ptrace breakpoints"). The patch was fine but we can no longer race with SIGKILL after 9899d11f ("ptrace: ensure arch_ptrace/ptrace_request can never race with SIGKILL"), the __TASK_TRACED tracee can't be woken up and ->ptrace_bps[] can't go away. Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx> Cc: Paul Mundt <lethal@xxxxxxxxxxxx> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Jan Kratochvil <jan.kratochvil@xxxxxxxxxx> Cc: Michael Neuling <mikey@xxxxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Will Deacon <will.deacon@xxxxxxx> Cc: Prasad <prasad@xxxxxxxxxxxxxxxxxx> Cc: Russell King <linux@xxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/sh/kernel/ptrace_32.c | 4 ---- 1 file changed, 4 deletions(-) diff -puN arch/sh/kernel/ptrace_32.c~ptrace-sh-revert-hw_breakpoints-fix-racy-access-to-ptrace-breakpoints arch/sh/kernel/ptrace_32.c --- a/arch/sh/kernel/ptrace_32.c~ptrace-sh-revert-hw_breakpoints-fix-racy-access-to-ptrace-breakpoints +++ a/arch/sh/kernel/ptrace_32.c @@ -117,11 +117,7 @@ void user_enable_single_step(struct task set_tsk_thread_flag(child, TIF_SINGLESTEP); - if (ptrace_get_breakpoints(child) < 0) - return; - set_single_step(child, pc); - ptrace_put_breakpoints(child); } void user_disable_single_step(struct task_struct *child) _ Patches currently in -mm which might be from oleg@xxxxxxxxxx are origin.patch linux-next.patch mm-mempolicy-fix-mbind_range-vma_adjust-interaction.patch include-linux-schedh-dont-use-task-pid-tgid-in-same_thread_group-has_group_leader_pid.patch lockdep-introduce-lock_acquire_exclusive-shared-helper-macros.patch lglock-update-lockdep-annotations-to-report-recursive-local-locks.patch fput-task_work_add-can-fail-if-the-caller-has-passed-exit_task_work-fix.patch fput-turn-list_head-delayed_fput_list-into-llist_head.patch llist-fix-simplify-llist_add-and-llist_add_batch.patch llist-llist_add-can-use-llist_add_batch.patch kernel-wide-fix-missing-validations-on-__get-__put-__copy_to-__copy_from_user.patch autofs4-allow-autofs-to-work-outside-the-initial-pid-namespace.patch autofs4-translate-pids-to-the-right-namespace-for-the-daemon.patch signals-eventpoll-set-saved_sigmask-at-the-start.patch move-exit_task_namespaces-outside-of-exit_notify-fix.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html