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linux-sg2042
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[PATCH] x86_64: Don't call do_exit with interrupts disabled after IRET exception 

This caused a sigreturn with bad argument on a preemptible kernel
to complain with

Debug: sleeping function called from invalid context at /home/lsrc/quilt/linux/include/linux/rwsem.h:43
in_atomic():0, irqs_disabled():1

Call Trace: {__might_sleep+190} {profile_task_exit+21}
       {__do_exit+34} {do_wait+0}

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andi Kleen 2006-02-16 23:42:01 +01:00 committed by Linus Torvalds
parent a62eaf151d
commit 2391c4b594
1 changed files with 1 additions and 0 deletions
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arch/x86_64/kernel/entry.S
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@ -554,6 +554,7 @@ iret_label:
/* running with kernel gs */ /* running with kernel gs */
bad_iret: bad_iret:
movq $-9999,%rdi /* better code? */ movq $-9999,%rdi /* better code? */
sti
jmp do_exit jmp do_exit
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