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0b8c3d5ab0
linux/arch
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Chuck Ebbert 0b8c3d5ab0 x86: Clear TS in irq_ts_save() when in an atomic section 
The dynamic FPU context allocation changes caused the padlock driver
to generate the below warning. Fix it by masking TS when doing padlock
encryption operations in an atomic section.

This solves:

BUG: sleeping function called from invalid context at mm/slub.c:1602
in_atomic(): 1, irqs_disabled(): 0, pid: 82, name: cryptomgr_test
Pid: 82, comm: cryptomgr_test Not tainted 2.6.29.4-168.test7.fc11.x86_64 #1
Call Trace:
[<ffffffff8103ff16>] __might_sleep+0x10b/0x110
[<ffffffff810cd3b2>] kmem_cache_alloc+0x37/0xf1
[<ffffffff81018505>] init_fpu+0x49/0x8a
[<ffffffff81012a83>] math_state_restore+0x3e/0xbc
[<ffffffff813ac6d0>] do_device_not_available+0x9/0xb
[<ffffffff810123ab>] device_not_available+0x1b/0x20
[<ffffffffa001c066>] ? aes_crypt+0x66/0x74 [padlock_aes]
[<ffffffff8119a51a>] ? blkcipher_walk_next+0x257/0x2e0
[<ffffffff8119a731>] ? blkcipher_walk_first+0x18e/0x19d
[<ffffffffa001c1fe>] aes_encrypt+0x9d/0xe5 [padlock_aes]
[<ffffffffa0027253>] crypt+0x6b/0x114 [xts]
[<ffffffffa001c161>] ? aes_encrypt+0x0/0xe5 [padlock_aes]
[<ffffffffa001c161>] ? aes_encrypt+0x0/0xe5 [padlock_aes]
[<ffffffffa0027390>] encrypt+0x49/0x4b [xts]
[<ffffffff81199acc>] async_encrypt+0x3c/0x3e
[<ffffffff8119dafc>] test_skcipher+0x1da/0x658
[<ffffffff811979c3>] ? crypto_spawn_tfm+0x8e/0xb1
[<ffffffff8119672d>] ? __crypto_alloc_tfm+0x11b/0x15f
[<ffffffff811979c3>] ? crypto_spawn_tfm+0x8e/0xb1
[<ffffffff81199dbe>] ? skcipher_geniv_init+0x2b/0x47
[<ffffffff8119a905>] ? async_chainiv_init+0x5c/0x61
[<ffffffff8119dfdd>] alg_test_skcipher+0x63/0x9b
[<ffffffff8119e1bc>] alg_test+0x12d/0x175
[<ffffffff8119c488>] cryptomgr_test+0x38/0x54
[<ffffffff8119c450>] ? cryptomgr_test+0x0/0x54
[<ffffffff8105c6c9>] kthread+0x4d/0x78
[<ffffffff8101264a>] child_rip+0xa/0x20
[<ffffffff81011f67>] ? restore_args+0x0/0x30
[<ffffffff8105c67c>] ? kthread+0x0/0x78
[<ffffffff81012640>] ? child_rip+0x0/0x20

Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <20090609104050.50158cfe@dhcp-100-2-144.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-09 16:50:43 +02:00
..
alpha alpha: unbreak percpu again 2009-05-12 14:11:35 -07:00
arm Merge master.kernel.org:/home/rmk/linux-2.6-arm 2009-05-29 16:07:39 -07:00
avr32 avr32: drop unused CLEAN_FILES 2009-05-01 10:54:00 +02:00
blackfin flat: fix data sections alignment 2009-05-29 08:40:02 -07:00
cris CRISv32: Fix typo compile error in ARTPEC-3 gpio driver. 2009-04-28 19:08:10 +02:00
frv FRV: Use __INIT macro instead of .text.init. 2009-04-27 19:46:30 -07:00
h8300 flat: fix data sections alignment 2009-05-29 08:40:02 -07:00
ia64 [IA64] xen_domu_defconfig: fix build issues/warnings 2009-05-05 11:43:13 -07:00
m32r flat: fix data sections alignment 2009-05-29 08:40:02 -07:00
m68k flat: fix data sections alignment 2009-05-29 08:40:02 -07:00
m68knommu Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu 2009-04-24 08:45:53 -07:00
microblaze microblaze: Fix kind-of-intr checking against number of interrupts 2009-05-18 14:47:42 +02:00
mips MIPS: IP32: Remove unnecessary if not even harmful volatile keywords. 2009-05-22 13:52:06 +01:00
mn10300 mn10300: convert to use __HEAD and HEAD_TEXT macros. 2009-04-26 09:20:38 -07:00
parisc
powerpc powerpc: Fix up dma_alloc_coherent() on platforms without cache coherency. 2009-05-27 16:33:59 +10:00
s390 s390: convert to use __HEAD and HEAD_TEXT macros. 2009-04-26 09:20:39 -07:00
sh flat: fix data sections alignment 2009-05-29 08:40:02 -07:00
sparc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 2009-06-01 08:02:31 -07:00
um uml: kill a kconfig warning 2009-04-21 13:41:50 -07:00
x86 x86: Clear TS in irq_ts_save() when in an atomic section 2009-06-09 16:50:43 +02:00
xtensa xtensa: Fix linker script to include .literal sections 2009-05-11 23:40:33 -07:00
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Kconfig