linux/arch
Paolo 'Blaisorblade' Giarrusso 5d48545e5e [PATCH] uml: make execvp safe for our usage
Reimplement execvp for our purposes - after we call fork() it is fundamentally
unsafe to use the kernel allocator - current is not valid there.  So we simply
pass to our modified execvp() a preallocated buffer.  This fixes a real bug
and works very well in testing (I've seen indirectly warning messages from the
forked thread - they went on the pipe connected to its stdout and where read
as a number by UML, when calling read_output().  I verified the obtained
number corresponded to "BUG:").

The added use of __cant_sleep() is not a new bug since __cant_sleep() is
already used in the same function - passing an atomicity parameter would be
better but it would require huge change, stating that this function must not
be called in atomic context and can sleep is a better idea (will make sure of
this gradually).

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-25 13:28:34 -08:00
..
alpha Update for the srm_env driver. 2006-11-07 23:50:37 +01:00
arm [ARM] 3942/1: ARM: comment: consistent_sync should not be called directly 2006-11-22 22:45:57 +00:00
arm26 [PATCH] remove bogus arch-specific syscall exports 2006-10-11 11:17:07 -07:00
avr32 AVR32: Add missing return instruction in __raw_writesb 2006-11-06 14:07:16 +01:00
cris [PATCH] cryptocop: double spin_lock_irqsave() 2006-10-30 12:08:41 -08:00
frv [PATCH] vmlinux.lds: consolidate initcall sections 2006-10-27 15:34:51 -07:00
h8300 [PATCH] vmlinux.lds: consolidate initcall sections 2006-10-27 15:34:51 -07:00
i386 x86: be more careful when walking back the frame pointer chain 2006-11-17 11:14:56 -08:00
ia64 [IA64] a fix towards allmodconfig build 2006-11-16 11:25:12 -08:00
m32r [PATCH] vmlinux.lds: consolidate initcall sections 2006-10-27 15:34:51 -07:00
m68k [PATCH] m68k: consolidate initcall sections 2006-10-29 12:07:41 -08:00
m68knommu [PATCH] m68knommu: fix up for the irq_handler_t changes 2006-11-20 10:16:49 -08:00
mips [MIPS] Hack for SB1 cache issues 2006-11-22 23:34:01 +00:00
parisc [PATCH] vmlinux.lds: consolidate initcall sections 2006-10-27 15:34:51 -07:00
powerpc [POWERPC] Fix ucc_geth of_device discovery on mpc832x 2006-11-22 13:28:21 +11:00
ppc [POWERPC] Make alignment exception always check exception table 2006-11-01 15:16:04 +11:00
s390 [S390] IRQs too early enabled. 2006-11-06 10:49:02 +01:00
sh sh: Titan defconfig update. 2006-10-31 12:53:29 +09:00
sh64 [PATCH] vmlinux.lds: consolidate initcall sections 2006-10-27 15:34:51 -07:00
sparc [SPARC]: Fix robust futex syscalls and wire up migrate_pages. 2006-11-05 16:51:03 -08:00
sparc64 [SPARC]: Fix robust futex syscalls and wire up migrate_pages. 2006-11-05 16:51:03 -08:00
um [PATCH] uml: make execvp safe for our usage 2006-11-25 13:28:34 -08:00
v850 [PATCH] vmlinux.lds: consolidate initcall sections 2006-10-27 15:34:51 -07:00
x86_64 [PATCH] x86_64: Align data segment to PAGE_SIZE boundary 2006-11-21 10:31:21 +01:00
xtensa [PATCH] vmlinux.lds: consolidate initcall sections 2006-10-27 15:34:51 -07:00