linux-kernel - post 3.5, phantom signals.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20120731191731.GB30493@redhat.com>
Date:	Tue, 31 Jul 2012 15:17:31 -0400
From:	Dave Jones <davej@...hat.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>, oleg@...hat.com
Subject: post 3.5, phantom signals.

Since 3.5, I've started noticing weird things happening with signal delivery.
Things I've seen so far..

- long running tasks SIGINT, even though I wasn't even anywhere near the keyboard.
- processes running inside screen/tmux disappearing (and taking the whole session with them).

And now, while waiting for a kernel to build I just saw..

/bin/sh: line 1:  3274 Hangup                  gcc
-Wp,-MD,net/netfilter/.xt_HL.o.d -nostdinc -isystem
/usr/lib/gcc/x86_64-redhat-linux/4.7.0/include
-I/home/davej/src/linux-dj/arch/x86/include -Iarch/x86/include/generated
-Iinclude -include /home/davej/src/linux-dj/include/linux/kconfig.h
-D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs
-fno-strict-aliasing -fno-common -Werror-implicit-function-declaration
-Wno-format-security -fno-delete-null-pointer-checks -O2 -m64
-mtune=generic -mno-red-zone -mcmodel=kernel -funit-at-a-time
-maccumulate-outgoing-args -fstack-protector -DCONFIG_X86_X32_ABI
-DCONFIG_AS_CFI=1 -DCONFIG_AS_CFI_SIGNAL_FRAME=1
-DCONFIG_AS_CFI_SECTIONS=1 -DCONFIG_AS_FXSAVEQ=1 -DCONFIG_AS_AVX=1 -pipe
-Wno-sign-compare -fno-asynchronous-unwind-tables -mno-sse -mno-mmx
-mno-sse2 -mno-3dnow -mno-avx -Wframe-larger-than=2048
-Wno-unused-but-set-variable -fno-omit-frame-pointer
-fno-optimize-sibling-calls -g -pg -Wdeclaration-after-statement
-Wno-pointer-sign -fno-strict-overflow -fconserve-stack
-DCC_HAVE_ASM_GOTO -DMODULE -D"KBUILD_STR(s)=#s"
-D"KBUILD_BASENAME=KBUILD_STR(xt_HL)"
-D"KBUILD_MODNAME=KBUILD_STR(xt_HL)" -c -o net/netfilter/xt_HL.o
net/netfilter/xt_HL.c

Any thoughts on specific commits that might be guilty ?

	Dave

--
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/