- 21 Jun, 2018 25 commits
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Masami Hiramatsu authored
Since int3 and debug exception(for singlestep) are run with IRQ disabled and while running single stepping we drop IF from regs->flags, that path must not be preemptible. So we can remove the preempt disable/enable calls from that path. Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/lkml/152942497779.15209.2879580696589868291.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Clear current_kprobe and enable preemption in kprobe even if pre_handler returns !0. This simplifies function override using kprobes. Jprobe used to require to keep the preemption disabled and keep current_kprobe until it returned to original function entry. For this reason kprobe_int3_handler() and similar arch dependent kprobe handers checks pre_handler result and exit without enabling preemption if the result is !0. After removing the jprobe, Kprobes does not need to keep preempt disabled even if user handler returns !0 anymore. But since the function override handler in error-inject and bpf is also returns !0 if it overrides a function, to balancing the preempt count, it enables preemption and reset current kprobe by itself. That is a bad design that is very buggy. This fixes such unbalanced preempt-count and current_kprobes setting in kprobes, bpf and error-inject. Note: for powerpc and x86, this removes all preempt_disable from kprobe_ftrace_handler because ftrace callbacks are called under preempt disabled. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David S. Miller <davem@davemloft.net> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: James Hogan <jhogan@kernel.org> Cc: Josef Bacik <jbacik@fb.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-ia64@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-s390@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: linux-snps-arc@lists.infradead.org Cc: linuxppc-dev@lists.ozlabs.org Cc: sparclinux@vger.kernel.org Link: https://lore.kernel.org/lkml/152942494574.15209.12323837825873032258.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Don't call the ->break_handler() from the sparc64 kprobes code, because it was only used by jprobes which got removed. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: David S. Miller <davem@davemloft.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: sparclinux@vger.kernel.org Link: https://lore.kernel.org/lkml/152942491684.15209.8114703769135529984.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Don't call the ->break_handler() from the SH kprobes code, because it was only used by jprobes which got removed. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rich Felker <dalias@libc.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: linux-arch@vger.kernel.org Cc: linux-sh@vger.kernel.org Link: https://lore.kernel.org/lkml/152942488763.15209.7791710414058030809.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Don't call the ->break_handler() from the s390 kprobes code, because it was only used by jprobes which got removed. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linux-s390@vger.kernel.org Link: https://lore.kernel.org/lkml/152942485849.15209.16608277783809018031.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Don't call the ->break_handler() from the MIPS kprobes code, because it was only used by jprobes which got removed. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: James Hogan <jhogan@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linux-mips@linux-mips.org Link: https://lore.kernel.org/lkml/152942482953.15209.843924518200700137.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Don't call the ->break_handler() from the ia64 kprobes code, because it was only used by jprobes which got removed. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arch@vger.kernel.org Cc: linux-ia64@vger.kernel.org Link: https://lore.kernel.org/lkml/152942480045.15209.10715901482832337704.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Don't call the ->break_handler() from the powerpc kprobes code, because it was only used by jprobes which got removed. This also removes skip_singlestep() and embeds it in the caller, kprobe_ftrace_handler(), which simplifies regs->nip operation around there. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/lkml/152942477127.15209.8982613703787878618.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Don't call the ->break_handler() from the arm64 kprobes code, because it was only used by jprobes which got removed. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Will Deacon <will.deacon@arm.com> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/lkml/152942474231.15209.17684808374429473004.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Don't call the ->break_handler() from the arm kprobes code, because it was only used by jprobes which got removed. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/lkml/152942471328.15209.10625693210204476080.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Don't call the ->break_handler() from the ARC kprobes code, because it was only used by jprobes which got removed. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: linux-arch@vger.kernel.org Cc: linux-snps-arc@lists.infradead.org Link: https://lore.kernel.org/lkml/152942468446.15209.13773902741600803798.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Don't call the ->break_handler() and remove break_handler related code from x86 since that was only used by jprobe which got removed. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Link: https://lore.kernel.org/lkml/152942465549.15209.15889693025972771135.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Don't check the ->break_handler() from the core kprobes code, because it was only used by jprobes which got removed. ( In followup patches we'll remove the remaining calls in low level arch handlers as well and remove the callback altogether. ) Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Link: https://lore.kernel.org/lkml/152942462686.15209.6324404940493598980.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Remove arch dependent setjump/longjump functions and unused fields in kprobe_ctlblk for jprobes from arch/sparc. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: David S. Miller <davem@davemloft.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: sparclinux@vger.kernel.org Link: https://lore.kernel.org/lkml/152942459795.15209.9736720668494241853.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Remove arch dependent setjump/longjump functions and unused fields in kprobe_ctlblk for jprobes from arch/sh. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rich Felker <dalias@libc.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: linux-arch@vger.kernel.org Cc: linux-sh@vger.kernel.org Link: https://lore.kernel.org/lkml/152942456877.15209.5482537226935729621.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Remove arch dependent setjump/longjump functions and unused fields in kprobe_ctlblk for jprobes from arch/s390. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linux-s390@vger.kernel.org Link: https://lore.kernel.org/lkml/152942453967.15209.8535227381029256754.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Remove arch dependent setjump/longjump functions and unused fields in kprobe_ctlblk for jprobes from arch/mips. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: James Hogan <jhogan@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linux-mips@linux-mips.org Link: https://lore.kernel.org/lkml/152942451058.15209.3459785416221980965.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Remove arch dependent setjump/longjump functions and unused fields in kprobe_ctlblk for jprobes from arch/ia64. Note that since ia64 jprobes code is a bit different from other architectures, this keeps __IA64_BREAK_JPROBE for checking the ->break_handler(). It will be removed with the break_handler() calls afterwards. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arch@vger.kernel.org Cc: linux-ia64@vger.kernel.org Link: https://lore.kernel.org/lkml/152942448152.15209.2026051332977587306.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Remove arch dependent setjump/longjump functions and unused fields in kprobe_ctlblk for jprobes from arch/powerpc. This also reverts commits related __is_active_jprobe() function. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/lkml/152942445234.15209.12868722778364739753.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Remove arch dependent setjump/longjump functions and unused fields in kprobe_ctlblk for jprobes from arch/arm64. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Will Deacon <will.deacon@arm.com> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/lkml/152942442318.15209.17767976282305601884.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Remove arch dependent setjump/longjump functions and unused fields in kprobe_ctlblk for jprobes from arch/arm. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/lkml/152942439350.15209.11127640848082283736.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Remove arch dependent setjump/longjump functions and unused fields in kprobe_ctlblk for jprobes from arch/arc. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: linux-arch@vger.kernel.org Cc: linux-snps-arc@lists.infradead.org Link: https://lore.kernel.org/lkml/152942436460.15209.3038881268172249579.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Remove arch dependent setjump/longjump functions and unused fields in kprobe_ctlblk for jprobes from arch/x86. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Link: https://lore.kernel.org/lkml/152942433578.15209.14034551799624757792.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Remove functionally empty jprobe API implementations and test cases. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Link: https://lore.kernel.org/lkml/152942430705.15209.2307050500995264322.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Masami Hiramatsu authored
Remove 'jps' from the document, since jprobe got removed. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/lkml/152942427814.15209.6650206464370123166.stgit@devboxSigned-off-by: Ingo Molnar <mingo@kernel.org>
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- 20 Jun, 2018 15 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds authored
Pull rdma fixes from Jason Gunthorpe: "Here are eight fairly small fixes collected over the last two weeks. Regression and crashing bug fixes: - mlx4/5: Fixes for issues found from various checkers - A resource tracking and uverbs regression in the core code - qedr: NULL pointer regression found during testing - rxe: Various small bugs" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: IB/rxe: Fix missing completion for mem_reg work requests RDMA/core: Save kernel caller name when creating CQ using ib_create_cq() IB/uverbs: Fix ordering of ucontext check in ib_uverbs_write IB/mlx4: Fix an error handling path in 'mlx4_ib_rereg_user_mr()' RDMA/qedr: Fix NULL pointer dereference when running over iWARP without RDMA-CM IB/mlx5: Fix return value check in flow_counters_set_data() IB/mlx5: Fix memory leak in mlx5_ib_create_flow IB/rxe: avoid double kfree skb
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) Fix crash on bpf_prog_load() errors, from Daniel Borkmann. 2) Fix ATM VCC memory accounting, from David Woodhouse. 3) fib6_info objects need RCU freeing, from Eric Dumazet. 4) Fix SO_BINDTODEVICE handling for TCP sockets, from David Ahern. 5) Fix clobbered error code in enic_open() failure path, from Govindarajulu Varadarajan. 6) Propagate dev_get_valid_name() error returns properly, from Li RongQing. 7) Fix suspend/resume in davinci_emac driver, from Bartosz Golaszewski. 8) Various act_ife fixes (recursive locking, IDR leaks, etc.) from Davide Caratti. 9) Fix buggy checksum handling in sungem driver, from Eric Dumazet. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (40 commits) ip: limit use of gso_size to udp stmmac: fix DMA channel hang in half-duplex mode net: stmmac: socfpga: add additional ocp reset line for Stratix10 net: sungem: fix rx checksum support bpfilter: ignore binary files bpfilter: fix build error net/usb/drivers: Remove useless hrtimer_active check net/sched: act_ife: preserve the action control in case of error net/sched: act_ife: fix recursive lock and idr leak net: ethernet: fix suspend/resume in davinci_emac net: propagate dev_get_valid_name return code enic: do not overwrite error code net/tcp: Fix socket lookups with SO_BINDTODEVICE ptp: replace getnstimeofday64() with ktime_get_real_ts64() net/ipv6: respect rcu grace period before freeing fib6_info net: net_failover: fix typo in net_failover_slave_register() ipvlan: use ETH_MAX_MTU as max mtu net: hamradio: use eth_broadcast_addr enic: initialize enic->rfs_h.lock in enic_probe MAINTAINERS: Add Sam as the maintainer for NCSI ...
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hidLinus Torvalds authored
Pull HID fixes from Jiri Kosina: - Wacom 2nd-gen Intuos Pro large Y axis handling fix from Jason Gerecke - fix for hibernation in Intel ISH driver, from Even Xu - crash fix for hid-steam driver, from Rodrigo Rivas Costa - new device ID addition to google-hammer driver * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: wacom: Correct logical maximum Y for 2nd-gen Intuos Pro large HID: intel_ish-hid: ipc: register more pm callbacks to support hibernation HID: steam: use hid_device.driver_data instead of hid_set_drvdata() HID: google: Add support for whiskers
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git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull dma-mapping rename from Christoph Hellwig: "Move all the dma-mapping code to kernel/dma and lose their dma-* prefixes" * tag 'dma-rename-4.18' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: move all DMA mapping code to kernel/dma dma-mapping: use obj-y instead of lib-y for generic dma ops
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Jason Gerecke authored
The HID descriptor for the 2nd-gen Intuos Pro large (PTH-860) contains a typo which defines an incorrect logical maximum Y value. This causes a small portion of the bottom of the tablet to become unusable (both because the area is below the "bottom" of the tablet and because 'wacom_wac_event' ignores out-of-range values). It also results in a skewed aspect ratio. To fix this, we add a quirk to 'wacom_usage_mapping' which overwrites the data with the correct value. Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com> CC: stable@vger.kernel.org # v4.10+ Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Even Xu authored
Current ISH driver only registers suspend/resume PM callbacks which don't support hibernation (suspend to disk). Basically after hiberation, the ISH can't resume properly and user may not see sensor events (for example: screen rotation may not work). User will not see a crash or panic or anything except the following message in log: hid-sensor-hub 001F:8086:22D8.0001: timeout waiting for response from ISHTP device So this patch adds support for S4/hiberbation to ISH by using the SIMPLE_DEV_PM_OPS() MACRO instead of struct dev_pm_ops directly. The suspend and resume functions will now be used for both suspend to RAM and hibernation. If power management is disabled, SIMPLE_DEV_PM_OPS will do nothing, the suspend and resume related functions won't be used, so mark them as __maybe_unused to clarify that this is the intended behavior, and remove #ifdefs for power management. Cc: stable@vger.kernel.org Signed-off-by: Even Xu <even.xu@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Rodrigo Rivas Costa authored
When creating the low-level hidraw device, the reference to steam_device was stored using hid_set_drvdata(). But this value is not guaranteed to be kept when set before calling probe. If this pointer is reset, it crashes when opening the emulated hidraw device. It looks like hid_set_drvdata() is for users "avobe" this hid_device, while hid_device.driver_data it for users "below" this one. In this case, we are creating a virtual hidraw device, so we must use hid_device.driver_data. Signed-off-by: Rodrigo Rivas Costa <rodrigorivascosta@gmail.com> Tested-by: Mariusz Ceier <mceier+kernel@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Linus Torvalds authored
The rewrite of the cmdline fetching missed the fact that we used to also return the final terminating NUL character of the last argument. I hadn't noticed, and none of the tools I tested cared, but something obviously must care, because Michal Kubecek noticed the change in behavior. Tweak the "find the end" logic to actually include the NUL character, and once past the eend of argv, always start the strnlen() at the expected (original) argument end. This whole "allow people to rewrite their arguments in place" is a nasty hack and requires that odd slop handling at the end of the argv array, but it's our traditional model, so we continue to support it. Repored-and-bisected-by: Michal Kubecek <mkubecek@suse.cz> Reviewed-and-tested-by: Michal Kubecek <mkubecek@suse.cz> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Willem de Bruijn authored
The ipcm(6)_cookie field gso_size is set only in the udp path. The ip layer copies this to cork only if sk_type is SOCK_DGRAM. This check proved too permissive. Ping and l2tp sockets have the same type. Limit to sockets of type SOCK_DGRAM and protocol IPPROTO_UDP to exclude ping sockets. v1 -> v2 - remove irrelevant whitespace changes Fixes: bec1f6f6 ("udp: generate gso with UDP_SEGMENT") Reported-by: Maciej Żenczykowski <maze@google.com> Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Bhadram Varka authored
HW does not support Half-duplex mode in multi-queue scenario. Fix it by not advertising the Half-Duplex mode if multi-queue enabled. Signed-off-by: Bhadram Varka <vbhadram@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Dinh Nguyen authored
The Stratix10 platform has an additional reset line, OCP(Open Core Protocol), that also needs to get deasserted for the stmmac ethernet controller to work. Thus we need to update the Kconfig to include ARCH_STRATIX10 in order to build dwmac-socfpga. Also, remove the redundant check for the reset controller pointer. The reset driver already checks for the pointer and returns 0 if the pointer is NULL. Signed-off-by: Dinh Nguyen <dinguyen@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
After commit 88078d98 ("net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"), sungem owners reported the infamous "eth0: hw csum failure" message. CHECKSUM_COMPLETE has in fact never worked for this driver, but this was masked by the fact that upper stacks had to strip the FCS, and therefore skb->ip_summed was set back to CHECKSUM_NONE before my recent change. Driver configures a number of bytes to skip when the chip computes the checksum, and for some reason only half of the Ethernet header was skipped. Then a second problem is that we should strip the FCS by default, unless the driver is updated to eventually support NETIF_F_RXFCS in the future. Finally, a driver should check if NETIF_F_RXCSUM feature is enabled or not, so that the admin can turn off rx checksum if wanted. Many thanks to Andreas Schwab and Mathieu Malaterre for their help in debugging this issue. Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Meelis Roos <mroos@linux.ee> Reported-by: Mathieu Malaterre <malat@debian.org> Reported-by: Andreas Schwab <schwab@linux-m68k.org> Tested-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Matteo Croce authored
net/bpfilter/bpfilter_umh is a binary file generated when bpfilter is enabled, add it to .gitignore to avoid committing it. Fixes: d2ba09c1 ("net: add skeleton of bpfilter kernel module") Signed-off-by: Matteo Croce <mcroce@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Matteo Croce authored
bpfilter Makefile assumes that the system locale is en_US, and the parsing of objdump output fails. Set LC_ALL=C and, while at it, rewrite the objdump parsing so it spawns only 2 processes instead of 7. Fixes: d2ba09c1 ("net: add skeleton of bpfilter kernel module") Signed-off-by: Matteo Croce <mcroce@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Lezcano authored
The code does: if (hrtimer_active(&t)) hrtimer_cancel(&t); However, hrtimer_cancel() checks if the timer is active, so the test above is pointless. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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