create new kernel
git-svn-id: https://svn.disconnected-by-peer.at/svn/linamh/trunk/genlink@2485 6952d904-891a-0410-993b-d76249ca496b
This commit is contained in:
geos_one
parent
0b95f6da62
commit
1c4e24fb55
30
sys-kernel/linux-buffalo_ls_xhl/Manifest
Normal file
30
sys-kernel/linux-buffalo_ls_xhl/Manifest
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@ -0,0 +1,30 @@
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AUX hotfixes/2.6.33/compat-make-compat_alloc_user_space-incorporate-the-access_ok.patch 4309 RMD160 24e106ee1c2557ae1eac8c429c7e24961c5cfa48 SHA1 80f22664c9ad9569047e46daaed939318f0e1688 SHA256 d47f0960afcf6115cfd29f3796fcf37c2affa56a6af3ccc404910e00ae7cf7f0
|
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AUX hotfixes/2.6.33/x86-64-compat-retruncate-rax-after-ia32-syscall-entry-tracing.patch 1896 RMD160 c1fcb7e263e20c1174adf3ed29e9f95e7a4ab80a SHA1 41e9939449f5a6ea24beb1215eaa7d70c4cb6f34 SHA256 8fc2f5114f5bf88bbd7aae38ac86255c62ab4e0f22bbefc8856aca91a5308b5c
|
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AUX hotfixes/2.6.33/x86-64-compat-test-rax-for-the-syscall-number-not-eax.patch 3528 RMD160 70752d7549fa514f9a58d609de4d874a69dc390d SHA1 1867b54b9abc5d89fc1bd9289aec3cff518b8df8 SHA256 72dbd679c1778a59c213e69986484553907ee03b70064c99b904c031783f904a
|
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AUX hotfixes/2.6.34/compat-make-compat_alloc_user_space-incorporate-the-access_ok.patch 4926 RMD160 ccbee33c6b4f8f7fcf15c23e5a27709d474ed01c SHA1 eb7abde871fa7cf3081f8e1e6a576e771203a1dc SHA256 b5c369eb8045ecb5099cb98fe513acb64d771c91ce25e133b09c33d4be236999
|
||||
AUX hotfixes/2.6.34/x86-64-compat-retruncate-rax-after-ia32-syscall-entry-tracing.patch 1896 RMD160 c1fcb7e263e20c1174adf3ed29e9f95e7a4ab80a SHA1 41e9939449f5a6ea24beb1215eaa7d70c4cb6f34 SHA256 8fc2f5114f5bf88bbd7aae38ac86255c62ab4e0f22bbefc8856aca91a5308b5c
|
||||
AUX hotfixes/2.6.34/x86-64-compat-test-rax-for-the-syscall-number-not-eax.patch 3528 RMD160 70752d7549fa514f9a58d609de4d874a69dc390d SHA1 1867b54b9abc5d89fc1bd9289aec3cff518b8df8 SHA256 72dbd679c1778a59c213e69986484553907ee03b70064c99b904c031783f904a
|
||||
AUX hotfixes/2.6.35/linux-2.6.git-36d001c70d8a0144ac1d038f6876c484849a74de.patch 3516 RMD160 c31766b22b3027f5b4b0f218996277a411f13766 SHA1 cb8af45fd9da0c87399c20f9d69d3ab0ef491206 SHA256 1700ad0eff433539e434b7ad23cdedab114a4a890ffbdd74e0702e6c0b52a8cf
|
||||
AUX hotfixes/2.6.35/linux-2.6.git-c41d68a513c71e35a14f66d71782d27a79a81ea6.patch 7183 RMD160 b273d7811dfdae5a1a0001c45c6b97f30966dbd0 SHA1 25f302813a544e4fabb0086c39761cb50813c6f0 SHA256 4d8ed5ca33d365d7893e50bafb26e4aacb17186161c5bc9ac2ddb469873ad1e2
|
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AUX hotfixes/2.6.35/linux-2.6.git-eefdca043e8391dcd719711716492063030b55ac.patch 1863 RMD160 5c3d72d8f1e868f664c3d4cc0ae387ecd1be7ae2 SHA1 904820df0a80e3f4fd0b2c3578eefdb5bf84a510 SHA256 87936b817f3dda8e183042a468c66958a85b1caf0743344201beaf17db36e4ff
|
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AUX linux-server-2.6.33-amd64.config 108865 RMD160 5ea4fb1a236653d20277c485d74e9d21aa21b372 SHA1 8aa40e0fe6711ba5a93a5cfa6c537c29689f04c0 SHA256 d197230bf07e8a2b1994ba8e1b8792d5d8a9c442ff6789cdba729e614b67734a
|
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AUX linux-server-2.6.33-x86.config 113048 RMD160 b218a0d4577ba824526012fee9791d907fed2f7f SHA1 be5cf1635f7fc781c6105480f8941f76f27d730a SHA256 a73b89d7baff443a5602f2a43bedfe8b43f184f0f15ae644f70600dbc9f91bd0
|
||||
DIST 2.6.33-6.tar.bz2 276326 RMD160 9d167d31046e2497cb97fb2bdb082ff01cc4d89f SHA1 fda1b3eb57fa9412b44a6d75a358014d9adc2131 SHA256 68434df72ead4b5077692a4e4e2a3cd5b77778a9e918fa01992ff446ac721fab
|
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DIST 2.6.34-11.tar.bz2 246449 RMD160 e78f6e6e540c0ca14cedd85e9c195ca05f19207b SHA1 7d8dbadae86c36be12759cf7115d0e967ccc9916 SHA256 e69941e359dc9fa8da7b2993939033d0f494e494e4db26a61cad42c4c327ac2b
|
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DIST 2.6.35-9.tar.bz2 262028 RMD160 f396aeadc5a5a7bd1a8ecbcf56259157c1555ccf SHA1 7fbd88f36626517e08e18fa57fa2ee08a38e0858 SHA256 94995e8df57acff81c0393dc047d8c5e430c23c815a52d1c3127ca7048fa8413
|
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DIST linux-2.6.33.tar.bz2 66266488 RMD160 7f0897db8113bc17249d82d61ca41e3b91eb4664 SHA1 acc8db00f30c7dfb4f04183a88ba35a32b6f8e8d SHA256 63e237de3b3c4c46a21833b9ce7e20574548d52dabbd1a8bf376041e4455d5c6
|
||||
DIST linux-2.6.34.tar.bz2 67633622 RMD160 dafd721b00c13e3652405b517b379eed10020bf4 SHA1 4188857ba71f301991dc56285f593e9c311e5824 SHA256 fa395fec7de633df1cb85b6248b8f35af98380ed128a8bc465fb48bc4d252633
|
||||
DIST linux-2.6.35.tar.bz2 69305709 RMD160 f5d91abb4fa72fac812578d830b22180d85a0e6f SHA1 4cb1fbfbeedcd658ca37739679c65dfaa136bf4e SHA256 18b2e2c336032e366c942622b77302cb05fc034fb19018f086a4ebc9ed41bfcf
|
||||
DIST patch-2.6.34.6.bz2 185209 RMD160 75c9a569f8c80be7c418b75f7cde444fcc0a70ff SHA1 e033e2bc4b46e7cc8ee19c07b5ad6999b4c2a52d SHA256 a62e9392ad435948ea4ea2cce12e60e042da6e6da806691936ba50bbaa0dc8cc
|
||||
DIST patch-2.6.35.4.bz2 75980 RMD160 d3d050d516f6283b17d2e15075d57d6c41235254 SHA1 f17d865d5a8320d79869223049ebc36296a1dedd SHA256 03f88e20d9138fd710b338403b2fc97e43ecc34b1f6f0b0d203e03307485550e
|
||||
DIST patch-2.6.35.5.bz2 115391 RMD160 8a6d0b71aa043531575203aa61ac6807532f35e8 SHA1 1267c980179fe4ab35ac7344523c4dd616d2d5a6 SHA256 94bbeb43c6bd8047fa5f42766a68879199dfdadee11bd3e8f10f1317f698b0f4
|
||||
DIST server-2.6.34-amd64.config 110826 RMD160 3799c0da945996b208a2f5476c695e6b2b20c830 SHA1 37444cd2391a867d0789f2e782f966c24d074734 SHA256 0e43d38e9d419af84d7f6111a77cd7141308fa242740dfcbf5bd5fd8da4cd1d8
|
||||
DIST server-2.6.34-x86.config 114866 RMD160 d50e358b1d7ef5e82bfab3ebf1e08d96ab680a97 SHA1 feb788c85909884a21cf3e24bf25bd561723bc86 SHA256 0ab64dd9294d7ecd0622103c52e898ac3f3bdc66fe187f2a19f180cd9945e668
|
||||
DIST server-2.6.35-r5-amd64.config 116649 RMD160 cdf6b7f80778b67422f863323bc2af29b82dd993 SHA1 d40d3dca7c11d914cd1cd87ba4b7913aea002acf SHA256 cdf88908389dcdcf5a7550b7f06110d6f588612ad356b1d560e9d0cf609eaa92
|
||||
DIST server-2.6.35-r5-x86.config 121641 RMD160 ec930e27853aba07fec610e8d859d609a94201af SHA1 203d7191be89daffd7c829f84b9c5eed0a89e6b5 SHA256 a757eada636d38a845ccafbdc14a001cf79154d0f89e79efa880ea58b1131e3a
|
||||
DIST server-2.6.35-r6-amd64.config 116649 RMD160 cdf6b7f80778b67422f863323bc2af29b82dd993 SHA1 d40d3dca7c11d914cd1cd87ba4b7913aea002acf SHA256 cdf88908389dcdcf5a7550b7f06110d6f588612ad356b1d560e9d0cf609eaa92
|
||||
DIST server-2.6.35-r6-x86.config 121641 RMD160 ec930e27853aba07fec610e8d859d609a94201af SHA1 203d7191be89daffd7c829f84b9c5eed0a89e6b5 SHA256 a757eada636d38a845ccafbdc14a001cf79154d0f89e79efa880ea58b1131e3a
|
||||
EBUILD linux-server-2.6.33.ebuild 729 RMD160 81df987369b3029448fb1b9ee276536d34c0b308 SHA1 0a25774bcae8fc5aff5313c51cd69f11531f72fd SHA256 cf82d8ebd82b0ca12e2cfdbefd5d7a5a43782ba7897cbae83dbf77e20f8499ae
|
||||
EBUILD linux-server-2.6.34.ebuild 782 RMD160 5087c1b1d85cae909f1d9bdbe47de88a2fe4377e SHA1 20fb922ce477eeca14f2fec688f2a65fdef893f8 SHA256 c70a3e046fef0b06f50da8f1dc8d0c4ad6ca16a669fa7eba8a8b6e1cc3084f2d
|
||||
EBUILD linux-server-2.6.35-r5.ebuild 768 RMD160 242286ece09fe24dd5a4ee4c9f4720aded7e349c SHA1 ce299681c79a8c984c0ba0df6dd429d760edbe0c SHA256 50ff86f212e7a8e928c453067934ef071500bc62a4adea7e25c5fd23a3d4d999
|
||||
EBUILD linux-server-2.6.35-r6.ebuild 376 RMD160 db2c64dc68c459fd8db06126a6d8e2b0659cd111 SHA1 9de6ccd9c3f21bf996588f6fa74324701e8ce723 SHA256 22c7adb4e1c31ec128073cbe7fd9b52e5f30f216f4bce37a5609bc614e33ce5d
|
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@ -0,0 +1,97 @@
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From 36d001c70d8a0144ac1d038f6876c484849a74de Mon Sep 17 00:00:00 2001
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From: H. Peter Anvin <hpa@linux.intel.com>
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Date: Tue, 14 Sep 2010 12:42:41 -0700
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Subject: [PATCH] x86-64, compat: Test %rax for the syscall number, not %eax
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On 64 bits, we always, by necessity, jump through the system call
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table via %rax. For 32-bit system calls, in theory the system call
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number is stored in %eax, and the code was testing %eax for a valid
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system call number. At one point we loaded the stored value back from
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the stack to enforce zero-extension, but that was removed in checkin
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d4d67150165df8bf1cc05e532f6efca96f907cab. An actual 32-bit process
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will not be able to introduce a non-zero-extended number, but it can
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happen via ptrace.
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Instead of re-introducing the zero-extension, test what we are
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actually going to use, i.e. %rax. This only adds a handful of REX
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prefixes to the code.
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Reported-by: Ben Hawkes <hawkes@sota.gen.nz>
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Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Cc: <stable@kernel.org>
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Cc: Roland McGrath <roland@redhat.com>
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Cc: Andrew Morton <akpm@linux-foundation.org>
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---
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arch/x86/ia32/ia32entry.S | 14 +++++++-------
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1 files changed, 7 insertions(+), 7 deletions(-)
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diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
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index b86feab..84e3a4e 100644
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--- a/arch/x86/ia32/ia32entry.S
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+++ b/arch/x86/ia32/ia32entry.S
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@@ -153,7 +153,7 @@ ENTRY(ia32_sysenter_target)
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testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
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CFI_REMEMBER_STATE
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jnz sysenter_tracesys
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- cmpl $(IA32_NR_syscalls-1),%eax
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+ cmpq $(IA32_NR_syscalls-1),%rax
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ja ia32_badsys
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sysenter_do_call:
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IA32_ARG_FIXUP
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@@ -195,7 +195,7 @@ sysexit_from_sys_call:
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movl $AUDIT_ARCH_I386,%edi /* 1st arg: audit arch */
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call audit_syscall_entry
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movl RAX-ARGOFFSET(%rsp),%eax /* reload syscall number */
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- cmpl $(IA32_NR_syscalls-1),%eax
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+ cmpq $(IA32_NR_syscalls-1),%rax
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ja ia32_badsys
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movl %ebx,%edi /* reload 1st syscall arg */
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movl RCX-ARGOFFSET(%rsp),%esi /* reload 2nd syscall arg */
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@@ -248,7 +248,7 @@ sysenter_tracesys:
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call syscall_trace_enter
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LOAD_ARGS32 ARGOFFSET /* reload args from stack in case ptrace changed it */
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RESTORE_REST
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- cmpl $(IA32_NR_syscalls-1),%eax
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+ cmpq $(IA32_NR_syscalls-1),%rax
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ja int_ret_from_sys_call /* sysenter_tracesys has set RAX(%rsp) */
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jmp sysenter_do_call
|
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CFI_ENDPROC
|
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@@ -314,7 +314,7 @@ ENTRY(ia32_cstar_target)
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testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
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CFI_REMEMBER_STATE
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jnz cstar_tracesys
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- cmpl $IA32_NR_syscalls-1,%eax
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+ cmpq $IA32_NR_syscalls-1,%rax
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ja ia32_badsys
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cstar_do_call:
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IA32_ARG_FIXUP 1
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||||
@@ -367,7 +367,7 @@ cstar_tracesys:
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||||
LOAD_ARGS32 ARGOFFSET, 1 /* reload args from stack in case ptrace changed it */
|
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RESTORE_REST
|
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xchgl %ebp,%r9d
|
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- cmpl $(IA32_NR_syscalls-1),%eax
|
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+ cmpq $(IA32_NR_syscalls-1),%rax
|
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ja int_ret_from_sys_call /* cstar_tracesys has set RAX(%rsp) */
|
||||
jmp cstar_do_call
|
||||
END(ia32_cstar_target)
|
||||
@@ -425,7 +425,7 @@ ENTRY(ia32_syscall)
|
||||
orl $TS_COMPAT,TI_status(%r10)
|
||||
testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
|
||||
jnz ia32_tracesys
|
||||
- cmpl $(IA32_NR_syscalls-1),%eax
|
||||
+ cmpq $(IA32_NR_syscalls-1),%rax
|
||||
ja ia32_badsys
|
||||
ia32_do_call:
|
||||
IA32_ARG_FIXUP
|
||||
@@ -444,7 +444,7 @@ ia32_tracesys:
|
||||
call syscall_trace_enter
|
||||
LOAD_ARGS32 ARGOFFSET /* reload args from stack in case ptrace changed it */
|
||||
RESTORE_REST
|
||||
- cmpl $(IA32_NR_syscalls-1),%eax
|
||||
+ cmpq $(IA32_NR_syscalls-1),%rax
|
||||
ja int_ret_from_sys_call /* ia32_tracesys has set RAX(%rsp) */
|
||||
jmp ia32_do_call
|
||||
END(ia32_syscall)
|
||||
--
|
||||
1.7.2.3
|
||||
|
||||
@ -0,0 +1,190 @@
|
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From c41d68a513c71e35a14f66d71782d27a79a81ea6 Mon Sep 17 00:00:00 2001
|
||||
From: H. Peter Anvin <hpa@linux.intel.com>
|
||||
Date: Tue, 7 Sep 2010 16:16:18 -0700
|
||||
Subject: [PATCH] compat: Make compat_alloc_user_space() incorporate the access_ok()
|
||||
|
||||
compat_alloc_user_space() expects the caller to independently call
|
||||
access_ok() to verify the returned area. A missing call could
|
||||
introduce problems on some architectures.
|
||||
|
||||
This patch incorporates the access_ok() check into
|
||||
compat_alloc_user_space() and also adds a sanity check on the length.
|
||||
The existing compat_alloc_user_space() implementations are renamed
|
||||
arch_compat_alloc_user_space() and are used as part of the
|
||||
implementation of the new global function.
|
||||
|
||||
This patch assumes NULL will cause __get_user()/__put_user() to either
|
||||
fail or access userspace on all architectures. This should be
|
||||
followed by checking the return value of compat_access_user_space()
|
||||
for NULL in the callers, at which time the access_ok() in the callers
|
||||
can also be removed.
|
||||
|
||||
Reported-by: Ben Hawkes <hawkes@sota.gen.nz>
|
||||
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
|
||||
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
||||
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
|
||||
Acked-by: David S. Miller <davem@davemloft.net>
|
||||
Acked-by: Ingo Molnar <mingo@elte.hu>
|
||||
Acked-by: Thomas Gleixner <tglx@linutronix.de>
|
||||
Acked-by: Tony Luck <tony.luck@intel.com>
|
||||
Cc: Andrew Morton <akpm@linux-foundation.org>
|
||||
Cc: Arnd Bergmann <arnd@arndb.de>
|
||||
Cc: Fenghua Yu <fenghua.yu@intel.com>
|
||||
Cc: H. Peter Anvin <hpa@zytor.com>
|
||||
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
|
||||
Cc: Helge Deller <deller@gmx.de>
|
||||
Cc: James Bottomley <jejb@parisc-linux.org>
|
||||
Cc: Kyle McMartin <kyle@mcmartin.ca>
|
||||
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
|
||||
Cc: Paul Mackerras <paulus@samba.org>
|
||||
Cc: Ralf Baechle <ralf@linux-mips.org>
|
||||
Cc: <stable@kernel.org>
|
||||
---
|
||||
arch/ia64/include/asm/compat.h | 2 +-
|
||||
arch/mips/include/asm/compat.h | 2 +-
|
||||
arch/parisc/include/asm/compat.h | 2 +-
|
||||
arch/powerpc/include/asm/compat.h | 2 +-
|
||||
arch/s390/include/asm/compat.h | 2 +-
|
||||
arch/sparc/include/asm/compat.h | 2 +-
|
||||
arch/tile/include/asm/compat.h | 2 +-
|
||||
arch/x86/include/asm/compat.h | 2 +-
|
||||
include/linux/compat.h | 3 +++
|
||||
kernel/compat.c | 21 +++++++++++++++++++++
|
||||
10 files changed, 32 insertions(+), 8 deletions(-)
|
||||
|
||||
diff --git a/arch/ia64/include/asm/compat.h b/arch/ia64/include/asm/compat.h
|
||||
index f90edc8..9301a28 100644
|
||||
--- a/arch/ia64/include/asm/compat.h
|
||||
+++ b/arch/ia64/include/asm/compat.h
|
||||
@@ -199,7 +199,7 @@ ptr_to_compat(void __user *uptr)
|
||||
}
|
||||
|
||||
static __inline__ void __user *
|
||||
-compat_alloc_user_space (long len)
|
||||
+arch_compat_alloc_user_space (long len)
|
||||
{
|
||||
struct pt_regs *regs = task_pt_regs(current);
|
||||
return (void __user *) (((regs->r12 & 0xffffffff) & -16) - len);
|
||||
diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h
|
||||
index 613f691..dbc5106 100644
|
||||
--- a/arch/mips/include/asm/compat.h
|
||||
+++ b/arch/mips/include/asm/compat.h
|
||||
@@ -145,7 +145,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
|
||||
return (u32)(unsigned long)uptr;
|
||||
}
|
||||
|
||||
-static inline void __user *compat_alloc_user_space(long len)
|
||||
+static inline void __user *arch_compat_alloc_user_space(long len)
|
||||
{
|
||||
struct pt_regs *regs = (struct pt_regs *)
|
||||
((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;
|
||||
diff --git a/arch/parisc/include/asm/compat.h b/arch/parisc/include/asm/compat.h
|
||||
index 02b77ba..efa0b60 100644
|
||||
--- a/arch/parisc/include/asm/compat.h
|
||||
+++ b/arch/parisc/include/asm/compat.h
|
||||
@@ -147,7 +147,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
|
||||
return (u32)(unsigned long)uptr;
|
||||
}
|
||||
|
||||
-static __inline__ void __user *compat_alloc_user_space(long len)
|
||||
+static __inline__ void __user *arch_compat_alloc_user_space(long len)
|
||||
{
|
||||
struct pt_regs *regs = ¤t->thread.regs;
|
||||
return (void __user *)regs->gr[30];
|
||||
diff --git a/arch/powerpc/include/asm/compat.h b/arch/powerpc/include/asm/compat.h
|
||||
index 396d21a..a11d4ea 100644
|
||||
--- a/arch/powerpc/include/asm/compat.h
|
||||
+++ b/arch/powerpc/include/asm/compat.h
|
||||
@@ -134,7 +134,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
|
||||
return (u32)(unsigned long)uptr;
|
||||
}
|
||||
|
||||
-static inline void __user *compat_alloc_user_space(long len)
|
||||
+static inline void __user *arch_compat_alloc_user_space(long len)
|
||||
{
|
||||
struct pt_regs *regs = current->thread.regs;
|
||||
unsigned long usp = regs->gpr[1];
|
||||
diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
|
||||
index 104f200..a875c2f 100644
|
||||
--- a/arch/s390/include/asm/compat.h
|
||||
+++ b/arch/s390/include/asm/compat.h
|
||||
@@ -181,7 +181,7 @@ static inline int is_compat_task(void)
|
||||
|
||||
#endif
|
||||
|
||||
-static inline void __user *compat_alloc_user_space(long len)
|
||||
+static inline void __user *arch_compat_alloc_user_space(long len)
|
||||
{
|
||||
unsigned long stack;
|
||||
|
||||
diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h
|
||||
index 5016f76..6f57325 100644
|
||||
--- a/arch/sparc/include/asm/compat.h
|
||||
+++ b/arch/sparc/include/asm/compat.h
|
||||
@@ -167,7 +167,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
|
||||
return (u32)(unsigned long)uptr;
|
||||
}
|
||||
|
||||
-static inline void __user *compat_alloc_user_space(long len)
|
||||
+static inline void __user *arch_compat_alloc_user_space(long len)
|
||||
{
|
||||
struct pt_regs *regs = current_thread_info()->kregs;
|
||||
unsigned long usp = regs->u_regs[UREG_I6];
|
||||
diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
|
||||
index 306160e..1d9cd27 100644
|
||||
--- a/arch/x86/include/asm/compat.h
|
||||
+++ b/arch/x86/include/asm/compat.h
|
||||
@@ -205,7 +205,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
|
||||
return (u32)(unsigned long)uptr;
|
||||
}
|
||||
|
||||
-static inline void __user *compat_alloc_user_space(long len)
|
||||
+static inline void __user *arch_compat_alloc_user_space(long len)
|
||||
{
|
||||
struct pt_regs *regs = task_pt_regs(current);
|
||||
return (void __user *)regs->sp - len;
|
||||
diff --git a/include/linux/compat.h b/include/linux/compat.h
|
||||
index 9ddc878..5778b55 100644
|
||||
--- a/include/linux/compat.h
|
||||
+++ b/include/linux/compat.h
|
||||
@@ -360,5 +360,8 @@ extern ssize_t compat_rw_copy_check_uvector(int type,
|
||||
const struct compat_iovec __user *uvector, unsigned long nr_segs,
|
||||
unsigned long fast_segs, struct iovec *fast_pointer,
|
||||
struct iovec **ret_pointer);
|
||||
+
|
||||
+extern void __user *compat_alloc_user_space(unsigned long len);
|
||||
+
|
||||
#endif /* CONFIG_COMPAT */
|
||||
#endif /* _LINUX_COMPAT_H */
|
||||
diff --git a/kernel/compat.c b/kernel/compat.c
|
||||
index e167efc..c9e2ec0 100644
|
||||
--- a/kernel/compat.c
|
||||
+++ b/kernel/compat.c
|
||||
@@ -1126,3 +1126,24 @@ compat_sys_sysinfo(struct compat_sysinfo __user *info)
|
||||
|
||||
return 0;
|
||||
}
|
||||
+
|
||||
+/*
|
||||
+ * Allocate user-space memory for the duration of a single system call,
|
||||
+ * in order to marshall parameters inside a compat thunk.
|
||||
+ */
|
||||
+void __user *compat_alloc_user_space(unsigned long len)
|
||||
+{
|
||||
+ void __user *ptr;
|
||||
+
|
||||
+ /* If len would occupy more than half of the entire compat space... */
|
||||
+ if (unlikely(len > (((compat_uptr_t)~0) >> 1)))
|
||||
+ return NULL;
|
||||
+
|
||||
+ ptr = arch_compat_alloc_user_space(len);
|
||||
+
|
||||
+ if (unlikely(!access_ok(VERIFY_WRITE, ptr, len)))
|
||||
+ return NULL;
|
||||
+
|
||||
+ return ptr;
|
||||
+}
|
||||
+EXPORT_SYMBOL_GPL(compat_alloc_user_space);
|
||||
--
|
||||
1.7.2.3
|
||||
|
||||
@ -0,0 +1,49 @@
|
||||
From eefdca043e8391dcd719711716492063030b55ac Mon Sep 17 00:00:00 2001
|
||||
From: Roland McGrath <roland@redhat.com>
|
||||
Date: Tue, 14 Sep 2010 12:22:58 -0700
|
||||
Subject: [PATCH] x86-64, compat: Retruncate rax after ia32 syscall entry tracing
|
||||
|
||||
In commit d4d6715, we reopened an old hole for a 64-bit ptracer touching a
|
||||
32-bit tracee in system call entry. A %rax value set via ptrace at the
|
||||
entry tracing stop gets used whole as a 32-bit syscall number, while we
|
||||
only check the low 32 bits for validity.
|
||||
|
||||
Fix it by truncating %rax back to 32 bits after syscall_trace_enter,
|
||||
in addition to testing the full 64 bits as has already been added.
|
||||
|
||||
Reported-by: Ben Hawkes <hawkes@sota.gen.nz>
|
||||
Signed-off-by: Roland McGrath <roland@redhat.com>
|
||||
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
|
||||
---
|
||||
arch/x86/ia32/ia32entry.S | 8 +++++++-
|
||||
1 files changed, 7 insertions(+), 1 deletions(-)
|
||||
|
||||
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
|
||||
index 84e3a4e..518bb99 100644
|
||||
--- a/arch/x86/ia32/ia32entry.S
|
||||
+++ b/arch/x86/ia32/ia32entry.S
|
||||
@@ -50,7 +50,12 @@
|
||||
/*
|
||||
* Reload arg registers from stack in case ptrace changed them.
|
||||
* We don't reload %eax because syscall_trace_enter() returned
|
||||
- * the value it wants us to use in the table lookup.
|
||||
+ * the %rax value we should see. Instead, we just truncate that
|
||||
+ * value to 32 bits again as we did on entry from user mode.
|
||||
+ * If it's a new value set by user_regset during entry tracing,
|
||||
+ * this matches the normal truncation of the user-mode value.
|
||||
+ * If it's -1 to make us punt the syscall, then (u32)-1 is still
|
||||
+ * an appropriately invalid value.
|
||||
*/
|
||||
.macro LOAD_ARGS32 offset, _r9=0
|
||||
.if \_r9
|
||||
@@ -60,6 +65,7 @@
|
||||
movl \offset+48(%rsp),%edx
|
||||
movl \offset+56(%rsp),%esi
|
||||
movl \offset+64(%rsp),%edi
|
||||
+ movl %eax,%eax /* zero extension */
|
||||
.endm
|
||||
|
||||
.macro CFI_STARTPROC32 simple
|
||||
--
|
||||
1.7.2.3
|
||||
|
||||
@ -0,0 +1,12 @@
|
||||
# Copyright 2004-2010 Sabayon Linux
|
||||
# Distributed under the terms of the GNU General Public License v2
|
||||
|
||||
ETYPE="sources"
|
||||
K_NASPATCHES_VER="9"
|
||||
K_KERNEL_PATCH_VER="5"
|
||||
K_KERNEL_SOURCES_PKG="sys-kernel/linux-nas-sources-${PVR}"
|
||||
K_NASKERNEL_URI_CONFIG="yes"
|
||||
inherit nas-kernel
|
||||
KEYWORDS="~amd64 ~x86"
|
||||
DESCRIPTION="Official Sabayon Linux Server kernel image"
|
||||
RESTRICT="mirror"
|
||||
Loading…
Reference in New Issue
Block a user