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* x86: Reset the debug_stack update counterSteven Rostedt2012-05-31
| | | | | | | | | | | | | | | When an NMI goes off and it sees that it preempted the debug stack, to keep the debug stack safe, it changes the IDT to point to one that does not modify the stack on breakpoint (to allow breakpoints in NMIs). But the variable that gets set to know to undo it on exit never gets cleared on exit. Thus every NMI will reset it on exit the first time it is done even if it does not need to be reset. [ Added H. Peter Anvin's suggestion to use this_cpu_read/write ] Cc: <stable@vger.kernel.org> # v3.3 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* ftrace: Use breakpoint method to update ftrace callerSteven Rostedt2012-05-31
| | | | | | | | | | | | | | | | | | | | | | | | | On boot up and module load, it is fine to modify the code directly, without the use of breakpoints. This is because boot up modification is done before SMP is initialized, thus the modification is serial, and module load is done before the module executes. But after that we must use a SMP safe method to modify running code. Otherwise, if we are running the function tracer and update its function (by starting off the stack tracer, or perf tracing) the change of the function called by the ftrace trampoline is done directly. If this is being executed on another CPU, that CPU may take a GPF and crash the kernel. The breakpoint method is used to change the nops at all the functions, but the change of the ftrace callback handler itself was still using a direct modification. If tracing was enabled and the function callback was changed then another CPU could fault if it was currently calling the original callback. This modification must use the breakpoint method too. Note, the direct method is still used for boot up and module load. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* ftrace: Synchronize variable setting with breakpointsSteven Rostedt2012-05-31
| | | | | | | | | | | | | | | | | | | When the function tracer starts modifying the code via breakpoints it sets a variable (modifying_ftrace_code) to inform the breakpoint handler to call the ftrace int3 code. But there's no synchronization between setting this code and the handler, thus it is possible for the handler to be called on another CPU before it sees the variable. This will cause a kernel crash as the int3 handler will not know what to do with it. I originally added smp_mb()'s to force the visibility of the variable but H. Peter Anvin suggested that I just make it atomic. [ Added comments as suggested by Peter Zijlstra ] Suggested-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* Merge tag 'perf-urgent-for-mingo' of ↵Ingo Molnar2012-05-24
|\ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Fixes for the recently merged libtraceevent, from Arnaldo Carvalho de Melo: * Selected fixes for libtraceevent, from various contributors, submitter by Namhyung Kim in agreement with Steven Rostedt, all from the trace-cmd repo, i.e. they have been in use for quite a while in trace-cmd. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * tools lib traceevent: Fix signature of create_arg_item()Namhyung Kim2012-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The @type should be a type of enum event_type not enum filter_arg_type. This fixes following warning: $ make COMPILE FPIC parse-events.o COMPILE FPIC parse-filter.o /home/namhyung/project/trace-cmd/parse-filter.c: In function ‘create_arg_item’: /home/namhyung/project/trace-cmd/parse-filter.c:343:9: warning: comparison between ‘enum filter_arg_type’ and ‘enum event_type’ [-Wenum-compare] /home/namhyung/project/trace-cmd/parse-filter.c:339:2: warning: case value ‘8’ not in enumerated type ‘enum filter_arg_type’ [-Wswitch] BUILD STATIC LIB libparsevent.a BUILD STATIC LIB libtracecmd.a BUILD trace-cmd /usr/bin/make -C /home/namhyung/project/trace-cmd/Documentation all make[1]: Nothing to be done for `all'. Note: to build the gui, type "make gui" Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1337740619-27925-20-git-send-email-namhyung.kim@lge.com Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools lib traceevent: Use proper function parameter typeNamhyung Kim2012-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The param needs to be updated when setting args up so that the loop in process_defined_func() can see the correct param->type for the farg. Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1337740619-27925-15-git-send-email-namhyung.kim@lge.com Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools lib traceevent: Fix freeing arg on process_dynamic_array()Namhyung Kim2012-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The @arg paremeter should not be freed inside of process_XXX(), because it'd be freed from the caller of process_arg(). We can free it only after it was reused for local usage. Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1337740619-27925-14-git-send-email-namhyung.kim@lge.com Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools lib traceevent: Fix a possibly wrong memory dereferenceNamhyung Kim2012-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If set_op_prio() failed, the token will be freed at out_free, then arg->op.op would turn out to be a dangle pointer. After returning EVENT_ERROR from process_op(), free_arg() will be called and then it will finally see the dangling pointer. Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1337740619-27925-13-git-send-email-namhyung.kim@lge.com Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools lib traceevent: Fix a possible memory leakNamhyung Kim2012-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If event_read_fields failed in the middle, each member of struct format_field should be freed also. Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1337740619-27925-11-git-send-email-namhyung.kim@lge.com Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools lib traceevent: Allow expressions in __print_symbolic() fieldsStefan Hajnoczi2012-05-24
|/ | | | | | | | | | | | | | | | | | | | | | | | The __print_symbolic() function takes a sequence of key-value pairs for pretty-printing a constant. The new kvm:kvm_exit print fmt uses the expression: __print_symbolic(..., { 0x040 + 1, "DB excp" }, ...) Currently only atoms are supported and this print fmt fails to parse. This patch adds support for expressions instead of just atoms so that 0x040 + 1 is parsed successfully. Cc: Avi Kivity <avi@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1337740619-27925-6-git-send-email-namhyung.kim@lge.com Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* Merge branch 'perf/core' of ↵Ingo Molnar2012-05-24
|\ | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull a 'perf evlist' fix from Arnaldo Carvalho de Melo. Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * perf evlist: Explicititely initialize input_nameArnaldo Carvalho de Melo2012-05-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It was a global variable, so it was initialized, implicitely, to zero by being placed in the bss. Now it is just a local variable that is then passed to the __cmd_evlist routine, so it must be explicitely set to NULL. The problem manifested on a Fedora 17 system, using: gcc version 4.7.0 20120507 (Red Hat 4.7.0-5) (GCC) But not on several other systems, by luck. Reported-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-5e8wolcjs3rgd5i6yi995gfh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge branch 'tip/perf/urgent' of ↵Ingo Molnar2012-05-24
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/urgent Pull an ftrace ring-buffer fix from Steve Rostedt: * fix kernel crash when changing the size of the ring-buffer on boxes where possible_cpus != online_cpus. Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | ring-buffer: Check for valid buffer before changing sizeSteven Rostedt2012-05-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On some machines the number of possible CPUS is not the same as the number of CPUs that is on the machine. Ftrace uses possible_cpus to update the tracing structures but the ring buffer only allocates per cpu buffers for online CPUs when they come up. When the wakeup tracer was enabled in such a case, the ftrace code enabled all possible cpu buffers, but the code in ring_buffer_resize() did not check to see if the buffer in question was allocated. Since boot up CPUs did not match possible CPUs it caused the following crash: BUG: unable to handle kernel NULL pointer dereference at 00000020 IP: [<c1097851>] ring_buffer_resize+0x16a/0x28d *pde = 00000000 Oops: 0000 [#1] PREEMPT SMP Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: [last unloaded: scsi_wait_scan] Pid: 1387, comm: bash Not tainted 3.4.0-test+ #13 /DG965MQ EIP: 0060:[<c1097851>] EFLAGS: 00010217 CPU: 0 EIP is at ring_buffer_resize+0x16a/0x28d EAX: f5a14340 EBX: f6026b80 ECX: 00000ff4 EDX: 00000ff3 ESI: 00000000 EDI: 00000002 EBP: f4275ecc ESP: f4275eb0 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 CR0: 80050033 CR2: 00000020 CR3: 34396000 CR4: 000007d0 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 DR6: ffff0ff0 DR7: 00000400 Process bash (pid: 1387, ti=f4274000 task=f4380cb0 task.ti=f4274000) Stack: c109cf9a f6026b98 00000162 00160f68 00000006 00160f68 00000002 f4275ef0 c109d013 f4275ee8 c123b72a c1c0bf00 c1cc81dc 00000005 f4275f98 00000007 f4275f70 c109d0c7 7700000e 75656b61 00000070 f5e90900 f5c4e198 00000301 Call Trace: [<c109cf9a>] ? tracing_set_tracer+0x115/0x1e9 [<c109d013>] tracing_set_tracer+0x18e/0x1e9 [<c123b72a>] ? _copy_from_user+0x30/0x46 [<c109d0c7>] tracing_set_trace_write+0x59/0x7f [<c10ec01e>] ? fput+0x18/0x1c6 [<c11f8732>] ? security_file_permission+0x27/0x2b [<c10eaacd>] ? rw_verify_area+0xcf/0xf2 [<c10ec01e>] ? fput+0x18/0x1c6 [<c109d06e>] ? tracing_set_tracer+0x1e9/0x1e9 [<c10ead77>] vfs_write+0x8b/0xe3 [<c10ebead>] ? fget_light+0x30/0x81 [<c10eaf54>] sys_write+0x42/0x63 [<c1834fbf>] sysenter_do_call+0x12/0x28 This happens with the latency tracer as the ftrace code updates the saved max buffer via its cpumask and not with a global setting. Adding a check in ring_buffer_resize() to make sure the buffer being resized exists, fixes the problem. Cc: Vaibhav Nagarnaik <vnagarnaik@google.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2012-05-23
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal Pull first series of signal handling cleanups from Al Viro: "This is just the first part of the queue (about a half of it); assorted fixes all over the place in signal handling. This one ends with all sigsuspend() implementations switched to generic one (->saved_sigmask-based). With this, a bunch of assorted old buglets are fixed and most of the missing bits of NOTIFY_RESUME hookup are in place. Two more fixes sit in arm and um trees respectively, and there's a couple of broken ones that need obvious fixes - parisc and avr32 check TIF_NOTIFY_RESUME only on one of two codepaths; fixes for that will happen in the next series" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (55 commits) unicore32: if there's no handler we need to restore sigmask, syscall or no syscall xtensa: add handling of TIF_NOTIFY_RESUME microblaze: drop 'oldset' argument of do_notify_resume() microblaze: handle TIF_NOTIFY_RESUME score: add handling of NOTIFY_RESUME to do_notify_resume() m68k: add TIF_NOTIFY_RESUME and handle it. sparc: kill ancient comment in sparc_sigaction() h8300: missing checks of __get_user()/__put_user() return values frv: missing checks of __get_user()/__put_user() return values cris: missing checks of __get_user()/__put_user() return values powerpc: missing checks of __get_user()/__put_user() return values sh: missing checks of __get_user()/__put_user() return values sparc: missing checks of __get_user()/__put_user() return values avr32: struct old_sigaction is never used m32r: struct old_sigaction is never used xtensa: xtensa_sigaction doesn't exist alpha: tidy signal delivery up score: don't open-code force_sigsegv() cris: don't open-code force_sigsegv() blackfin: don't open-code force_sigsegv() ...
| * | | unicore32: if there's no handler we need to restore sigmask, syscall or no ↵Al Viro2012-05-22
| | | | | | | | | | | | | | | | | | | | | | | | syscall Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | xtensa: add handling of TIF_NOTIFY_RESUMEAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | microblaze: drop 'oldset' argument of do_notify_resume()Al Viro2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | never used... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | microblaze: handle TIF_NOTIFY_RESUMEAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | score: add handling of NOTIFY_RESUME to do_notify_resume()Al Viro2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's already called if TIF_NOTIFY_RESUME is set, so we only need to add the actual work. Note that checking for RESTORE_SIGMASK was not needed - set_restore_sigmask() also sets SIGPENDING, so we never RESTORE_SIGMASK without SIGPENDING. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | m68k: add TIF_NOTIFY_RESUME and handle it.Al Viro2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TIF_NOTIFY_RESUME added (as bit 5). That way nommu glue needs no changes at all; mmu one needs just to replace jmi do_signal_return to jne do_signal_return There we have flags shifted up, until bit 6 (SIGPENDING) is in MSBit; instead of checking that MSBit is set (jmi) we check that MSBit or something below it is set (jne); bits 0..4 are never set, so that's precisely "bit 6 or bit 5 is set". Usual handling of NOTIFY_RESUME/SIGPENDING is done in do_notify_resume(); glue calls it instead of do_signal(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | sparc: kill ancient comment in sparc_sigaction()Al Viro2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | It used to be true, until 2.1.78 (14 years ago) when we switched to do_sigaction()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | h8300: missing checks of __get_user()/__put_user() return valuesAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | frv: missing checks of __get_user()/__put_user() return valuesAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | cris: missing checks of __get_user()/__put_user() return valuesAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | powerpc: missing checks of __get_user()/__put_user() return valuesAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | sh: missing checks of __get_user()/__put_user() return valuesAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | sparc: missing checks of __get_user()/__put_user() return valuesAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | avr32: struct old_sigaction is never usedAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | m32r: struct old_sigaction is never usedAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | xtensa: xtensa_sigaction doesn't existAl Viro2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | ... and struct old_sigaction never used Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | alpha: tidy signal delivery upAl Viro2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * move force_sigsegv() (from setup...frame()) and clearing RESTART_SIGMASK (from do_signal()) into hanlde_signal() * get rid of handle_signal() return value and oldset argument * checking for TIF_SIGPENDING is enough; set_restart_sigmask() sets this one as well. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | score: don't open-code force_sigsegv()Al Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | cris: don't open-code force_sigsegv()Al Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | blackfin: don't open-code force_sigsegv()Al Viro2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | ... especially since we don't have the right k_sigaction here, so resetting sa_handler won't work. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | avr32: need to clear RESTORE_SIGMASK on successful signal deliveryAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | microblaze: bury sys_rt_sigsuspend_wrapper in nommu case tooAl Viro2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's been a dead code since commit 571202f50fad0aeb36661c79de9beed052347df8 Author: Michal Simek <monstr@monstr.eu> Date: Fri Dec 11 12:54:04 2009 +0100 microblaze: Remove rt_sigsuspend wrapper Generic rt_sigsuspend syscalls doesn't need any asm wrapper. but that commit has only removed it from entry.S, missing one in entry-nommu.S. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | cris: SA_ONESHOT handling is done by get_signal_to_deliver()Al Viro2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | ... and resetting sa_handler in local copy filled by get_signal_to_deliver() is obviously pointless anyway. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | h8300: switch to saved_sigmask-based sigsuspend/rt_sigsuspendAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | h8300: don't change blocked signals' mask if setting frame up failsAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | sh: switch to saved_sigmask-based sigsuspend()/rt_sigsuspend()Al Viro2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Complete the move of sh64 to it, trim the crap from prototypes, tidy up a bit. Infrastructure in do_signal() had already been there, in signal_64 as well as in signal_32 (where it was already used). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | xtensa: switch to generic rt_sigsuspend(2)Al Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | avr32: ->restart_block.fn needs to be reset on rt_sigreturnAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | xtensa: ->restart_block.fn needs to be reset on rt_sigreturnAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | score: ->restart_block.fn needs to be reset on rt_sigreturnAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | microblaze: ->restart_block.fn needs to be reset on rt_sigreturnAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | hexagon: ->restart_block.fn needs to be reset on rt_sigreturnAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | c6x: ->restart_block.fn needs to be reset on rt_sigreturnAl Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | parisc: resetting ->restart_block.fn needs to be done on rt_sigreturn()Al Viro2012-05-21
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | m68k: use set_current_blocked() and block_sigmask()Matt Fleming2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As described in e6fa16ab ("signal: sigprocmask() should do retarget_shared_pending()") the modification of current->blocked is incorrect as we need to check whether the signal we're about to block is pending in the shared queue. Also, use the new helper function introduced in commit 5e6292c0f28f ("signal: add block_sigmask() for adding sigmask to current->blocked") which centralises the code for updating current->blocked after successfully delivering a signal and reduces the amount of duplicate code across architectures. In the past some architectures got this code wrong, so using this helper function should stop that from happening again. Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-25 19:39:48 -0500