Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v3.8-rc4 2012-12-21T02:05:28+00:00 2012-12-21T02:05:28+00:00 Linus Torvalds torvalds@linux-foundation.org 2012-12-21T02:05:28+00:00 urn:sha1:54d46ea993744c5408e39ce0cb4851e13cbea716 Pull signal handling cleanups from Al Viro: "sigaltstack infrastructure + conversion for x86, alpha and um, COMPAT_SYSCALL_DEFINE infrastructure. Note that there are several conflicts between "unify SS_ONSTACK/SS_DISABLE definitions" and UAPI patches in mainline; resolution is trivial - just remove definitions of SS_ONSTACK and SS_DISABLED from arch/*/uapi/asm/signal.h; they are all identical and include/uapi/linux/signal.h contains the unified variant." Fixed up conflicts as per Al. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: alpha: switch to generic sigaltstack new helpers: __save_altstack/__compat_save_altstack, switch x86 and um to those generic compat_sys_sigaltstack() introduce generic sys_sigaltstack(), switch x86 and um to it new helper: compat_user_stack_pointer() new helper: restore_altstack() unify SS_ONSTACK/SS_DISABLE definitions new helper: current_user_stack_pointer() missing user_stack_pointer() instances Bury the conditionals from kernel_thread/kernel_execve series COMPAT_SYSCALL_DEFINE: infrastructure 2012-12-19T23:07:41+00:00 Al Viro viro@zeniv.linux.org.uk 2012-11-20T19:24:26+00:00 urn:sha1:c40702c49faef05ae324f121d8b3e215244ee152 note that they are relying on access_ok() already checked by caller. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 2012-12-19T23:07:41+00:00 Al Viro viro@zeniv.linux.org.uk 2012-12-14T19:47:53+00:00 urn:sha1:9026843952adac5b123c7b8dc961e5c15828d9e1 Again, conditional on CONFIG_GENERIC_SIGALTSTACK Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 2012-12-19T23:07:40+00:00 Al Viro viro@zeniv.linux.org.uk 2012-12-14T18:49:35+00:00 urn:sha1:9b064fc3f95a8e44e929fdf4d6037334ea03d15b Compat counterpart of current_user_stack_pointer(); for most of the biarch architectures those two are identical, but e.g. arm64 and arm use different registers for stack pointer... Note that amd64 variants of current_user_stack_pointer/compat_user_stack_pointer do *not* rely on pt_regs having been through FIXUP_TOP_OF_STACK. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 2012-12-19T23:06:58+00:00 Al Viro viro@zeniv.linux.org.uk 2012-11-23T14:12:59+00:00 urn:sha1:468366138850f20543f1d4878028900672b23dae Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 2012-12-18T01:15:18+00:00 Catalin Marinas catalin.marinas@arm.com 2012-12-18T00:01:45+00:00 urn:sha1:0ad50c3896afbb3c103409a18260e601b87a744c This function is used by sparc, powerpc tile and arm64 for compat support. The patch adds a generic implementation with a wrapper for PowerPC to do the u32->int sign extension. The reason for a single patch covering powerpc, tile, sparc and arm64 is to keep it bisectable, otherwise kernel building may fail with mismatched function declarations. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Chris Metcalf <cmetcalf@tilera.com> [for tile] Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2012-11-29T02:53:37+00:00 Al Viro viro@zeniv.linux.org.uk 2012-10-21T01:46:25+00:00 urn:sha1:d03d26e58fde2ec99478e26aab47b55755189b08 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 2012-10-20T17:13:11+00:00 Al Viro viro@zeniv.linux.org.uk 2012-10-20T17:13:11+00:00 urn:sha1:733deca197143857f938b41d671cd7ce9c53c4bc Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 2012-10-10T03:02:25+00:00 Linus Torvalds torvalds@linux-foundation.org 2012-10-10T03:02:25+00:00 urn:sha1:42859eea96ba6beabfb0369a1eeffa3c7d2bd9cb Pull generic execve() changes from Al Viro: "This introduces the generic kernel_thread() and kernel_execve() functions, and switches x86, arm, alpha, um and s390 over to them." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (26 commits) s390: convert to generic kernel_execve() s390: switch to generic kernel_thread() s390: fold kernel_thread_helper() into ret_from_fork() s390: fold execve_tail() into start_thread(), convert to generic sys_execve() um: switch to generic kernel_thread() x86, um/x86: switch to generic sys_execve and kernel_execve x86: split ret_from_fork alpha: introduce ret_from_kernel_execve(), switch to generic kernel_execve() alpha: switch to generic kernel_thread() alpha: switch to generic sys_execve() arm: get rid of execve wrapper, switch to generic execve() implementation arm: optimized current_pt_regs() arm: introduce ret_from_kernel_execve(), switch to generic kernel_execve() arm: split ret_from_fork, simplify kernel_thread() [based on patch by rmk] generic sys_execve() generic kernel_execve() new helper: current_pt_regs() preparation for generic kernel_thread() um: kill thread->forking um: let signal_delivered() do SIGTRAP on singlestepping into handler ... 2012-10-05T18:05:16+00:00 Denys Vlasenko vda.linux@googlemail.com 2012-10-05T00:15:31+00:00 urn:sha1:751f409db6216ebd134a94f6dcd97779933a5106 This is a preparatory patch for the introduction of NT_SIGINFO elf note. Make the location of compat_siginfo_t uniform across eight architectures which have it. Now it can be pulled in by including asm/compat.h or linux/compat.h. Most of the copies are verbatim. compat_uid[32]_t had to be replaced by __compat_uid[32]_t. compat_uptr_t had to be moved up before compat_siginfo_t in asm/compat.h on a several architectures (tile already had it moved up). compat_sigval_t had to be relocated from linux/compat.h to asm/compat.h. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Amerigo Wang <amwang@redhat.com> Cc: "Jonathan M. Foote" <jmfoote@cert.org> Cc: Roland McGrath <roland@hack.frob.com> Cc: Pedro Alves <palves@redhat.com> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>