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* arch: *: Kconfig: add "kernel/Kconfig.freezer" to "arch/*/Kconfig"Chen Gang2013-08-13
| | | | | | | | | | | | | | | | | | | | | | | | | | All architectures include "kernel/Kconfig.freezer" except three left, so let them include it too, or 'allmodconfig' will report error. The related errors: (with allmodconfig for openrisc): CC kernel/cgroup_freezer.o kernel/cgroup_freezer.c: In function 'freezer_css_online': kernel/cgroup_freezer.c:133:15: error: 'system_freezing_cnt' undeclared (first use in this function) kernel/cgroup_freezer.c:133:15: note: each undeclared identifier is reported only once for each function it appears in kernel/cgroup_freezer.c: In function 'freezer_css_offline': kernel/cgroup_freezer.c:157:15: error: 'system_freezing_cnt' undeclared (first use in this function) kernel/cgroup_freezer.c: In function 'freezer_attach': kernel/cgroup_freezer.c:200:4: error: implicit declaration of function 'freeze_task' kernel/cgroup_freezer.c: In function 'freezer_apply_state': kernel/cgroup_freezer.c:371:16: error: 'system_freezing_cnt' undeclared (first use in this function) Signed-off-by: Chen Gang <gang.chen@asianux.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Jonas Bonn <jonas@southpole.se> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: Lennox Wu <lennox.wu@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: fix null pointer dereference in ocfs2_dir_foreach_blk_id()Jeff Liu2013-08-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a NULL pointer deference while removing an empty directory, which was introduced by commit 3704412bdbf3 ("[readdir] convert ocfs2"). BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<(null)>] (null) PGD 6da85067 PUD 6da89067 PMD 0 Oops: 0010 [#1] SMP CPU: 0 PID: 6564 Comm: rmdir Tainted: G O 3.11.0-rc1 #4 RIP: 0010:[<0000000000000000>] [< (null)>] (null) Call Trace: ocfs2_dir_foreach+0x49/0x50 [ocfs2] ocfs2_empty_dir+0x12c/0x3e0 [ocfs2] ocfs2_unlink+0x56e/0xc10 [ocfs2] vfs_rmdir+0xd5/0x140 do_rmdir+0x1cb/0x1e0 SyS_rmdir+0x16/0x20 system_call_fastpath+0x16/0x1b Code: Bad RIP value. RIP [< (null)>] (null) RSP <ffff88006daddc10> CR2: 0000000000000000 [dan.carpenter@oracle.com: fix pointer math] Signed-off-by: Jie Liu <jeff.liu@oracle.com> Reported-by: David Weber <wb@munzinger.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86 get_unmapped_area(): use proper mmap base for bottom-up directionRadu Caragea2013-08-13
| | | | | | | | | | | | | | | When the stack is set to unlimited, the bottomup direction is used for mmap-ings but the mmap_base is not used and thus effectively renders ASLR for mmapings along with PIE useless. Cc: Michel Lespinasse <walken@google.com> Cc: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Rik van Riel <riel@redhat.com> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Adrian Sendroiu <molecula2788@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: fix NULL pointer dereference in ocfs2_duplicate_clusters_by_pageTiger Yang2013-08-13
| | | | | | | | | | | | | | | | | | | Since ocfs2_cow_file_pos will invoke ocfs2_refcount_icow with a NULL as the struct file pointer, it finally result in a null pointer dereference in ocfs2_duplicate_clusters_by_page. This patch replace file pointer with inode pointer in cow_duplicate_clusters to fix this issue. [jeff.liu@oracle.com: rebased patch against linux-next tree] Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Jie Liu <jeff.liu@oracle.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Acked-by: Tao Ma <tm@tao.ma> Tested-by: David Weber <wb@munzinger.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: Revert 40bd62e to avoid regression in extended allocationJie Liu2013-08-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Revert commit 40bd62eb7fb8 ("fs/ocfs2/journal.h: add bits_wanted while calculating credits in ocfs2_calc_extend_credits"). Unfortunately this change broke fallocate even if there is insufficient disk space for the preallocation, which is a serious problem. # df -h /dev/sda8 22G 1.2G 21G 6% /ocfs2 # fallocate -o 0 -l 200M /ocfs2/testfile fallocate: /ocfs2/test: fallocate failed: No space left on device and a kernel warning: CPU: 3 PID: 3656 Comm: fallocate Tainted: G W O 3.11.0-rc3 #2 Call Trace: dump_stack+0x77/0x9e warn_slowpath_common+0xc4/0x110 warn_slowpath_null+0x2a/0x40 start_this_handle+0x6c/0x640 [jbd2] jbd2__journal_start+0x138/0x300 [jbd2] jbd2_journal_start+0x23/0x30 [jbd2] ocfs2_start_trans+0x166/0x300 [ocfs2] __ocfs2_extend_allocation+0x38f/0xdb0 [ocfs2] ocfs2_allocate_unwritten_extents+0x3c9/0x520 __ocfs2_change_file_space+0x5e0/0xa60 [ocfs2] ocfs2_fallocate+0xb1/0xe0 [ocfs2] do_fallocate+0x1cb/0x220 SyS_fallocate+0x6f/0xb0 system_call_fastpath+0x16/0x1b JBD2: fallocate wants too many credits (51216 > 4381) Signed-off-by: Jie Liu <jeff.liu@oracle.com> Cc: Goldwyn Rodrigues <rgoldwyn@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-stmp3xxx.c: provide timeout for potentially endless loop ↵Lothar Waßmann2013-08-13
| | | | | | | | | | | | | | | | | polling a HW bit It's always a bad idea to poll on HW bits without a timeout. The i.MX28 RTC can be easily brought into a state in which the RTC is not running (until after a power-on-reset) and thus the status bits which are polled in the driver won't ever change. This patch prevents the kernel from getting stuck in this case. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* hugetlb: fix lockdep splat caused by pmd sharingMichal Hocko2013-08-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Dave has reported the following lockdep splat: ================================= [ INFO: inconsistent lock state ] 3.11.0-rc1+ #9 Not tainted --------------------------------- inconsistent {RECLAIM_FS-ON-W} -> {IN-RECLAIM_FS-W} usage. kswapd0/49 [HC0[0]:SC0[0]:HE1:SE1] takes: (&mapping->i_mmap_mutex){+.+.?.}, at: [<c114971b>] page_referenced+0x87/0x5e3 {RECLAIM_FS-ON-W} state was registered at: mark_held_locks+0x81/0xe7 lockdep_trace_alloc+0x5e/0xbc __alloc_pages_nodemask+0x8b/0x9b6 __get_free_pages+0x20/0x31 get_zeroed_page+0x12/0x14 __pmd_alloc+0x1c/0x6b huge_pmd_share+0x265/0x283 huge_pte_alloc+0x5d/0x71 hugetlb_fault+0x7c/0x64a handle_mm_fault+0x255/0x299 __do_page_fault+0x142/0x55c do_page_fault+0xd/0x16 error_code+0x6c/0x74 irq event stamp: 3136917 hardirqs last enabled at (3136917): _raw_spin_unlock_irq+0x27/0x50 hardirqs last disabled at (3136916): _raw_spin_lock_irq+0x15/0x78 softirqs last enabled at (3136180): __do_softirq+0x137/0x30f softirqs last disabled at (3136175): irq_exit+0xa8/0xaa other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&mapping->i_mmap_mutex); <Interrupt> lock(&mapping->i_mmap_mutex); *** DEADLOCK *** no locks held by kswapd0/49. stack backtrace: CPU: 1 PID: 49 Comm: kswapd0 Not tainted 3.11.0-rc1+ #9 Hardware name: Dell Inc. Precision WorkStation 490 /0DT031, BIOS A08 04/25/2008 Call Trace: dump_stack+0x4b/0x79 print_usage_bug+0x1d9/0x1e3 mark_lock+0x1e0/0x261 __lock_acquire+0x623/0x17f2 lock_acquire+0x7d/0x195 mutex_lock_nested+0x6c/0x3a7 page_referenced+0x87/0x5e3 shrink_page_list+0x3d9/0x947 shrink_inactive_list+0x155/0x4cb shrink_lruvec+0x300/0x5ce shrink_zone+0x53/0x14e kswapd+0x517/0xa75 kthread+0xa8/0xaa ret_from_kernel_thread+0x1b/0x28 which is a false positive caused by hugetlb pmd sharing code which allocates a new pmd from withing mapping->i_mmap_mutex. If this allocation causes reclaim then the lockdep detector complains that we might self-deadlock. This is not correct though, because hugetlb pages are not reclaimable so their mapping will be never touched from the reclaim path. The patch tells lockup detector that hugetlb i_mmap_mutex is special by assigning it a separate lockdep class so it won't report possible deadlocks on unrelated mappings. [peterz@infradead.org: comment for annotation] Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: Michal Hocko <mhocko@suse.cz> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* aoe: adjust ref of head for compound page tailsEd Cashin2013-08-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a BUG which can trigger when direct-IO is used with AOE. As discussed previously, the fact that some users of the block layer provide bios that point to pages with a zero _count means that it is not OK for the network layer to do a put_page on the skb frags during an skb_linearize, so the aoe driver gets a reference to pages in bios and puts the reference before ending the bio. And because it cannot use get_page on a page with a zero _count, it manipulates the value directly. It is not OK to increment the _count of a compound page tail, though, since the VM layer will VM_BUG_ON a non-zero _count. Block users that do direct I/O can result in the aoe driver seeing compound page tails in bios. In that case, the same logic works as long as the head of the compound page is used instead of the tails. This patch handles compound pages and does not BUG. It relies on the block layer user leaving the relationship between the page tail and its head alone for the duration between the submission of the bio and its completion, whether successful or not. Signed-off-by: Ed Cashin <ecashin@coraid.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* microblaze: fix clone syscallMichal Simek2013-08-13
| | | | | | | | | | | | | | | | | | | | | Fix inadvertent breakage in the clone syscall ABI for Microblaze that was introduced in commit f3268edbe6fe ("microblaze: switch to generic fork/vfork/clone"). The Microblaze syscall ABI for clone takes the parent tid address in the 4th argument; the third argument slot is used for the stack size. The incorrectly-used CLONE_BACKWARDS type assigned parent tid to the 3rd slot. This commit restores the original ABI so that existing userspace libc code will work correctly. All kernel versions from v3.8-rc1 were affected. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: save soft-dirty bits on file pagesCyrill Gorcunov2013-08-13
| | | | | | | | | | | | | | | | | | | | | | Andy reported that if file page get reclaimed we lose the soft-dirty bit if it was there, so save _PAGE_BIT_SOFT_DIRTY bit when page address get encoded into pte entry. Thus when #pf happens on such non-present pte we can restore it back. Reported-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Acked-by: Pavel Emelyanov <xemul@parallels.com> Cc: Matt Mackall <mpm@selenic.com> Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Peter Zijlstra <peterz@infradead.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: save soft-dirty bits on swapped pagesCyrill Gorcunov2013-08-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Andy Lutomirski reported that if a page with _PAGE_SOFT_DIRTY bit set get swapped out, the bit is getting lost and no longer available when pte read back. To resolve this we introduce _PTE_SWP_SOFT_DIRTY bit which is saved in pte entry for the page being swapped out. When such page is to be read back from a swap cache we check for bit presence and if it's there we clear it and restore the former _PAGE_SOFT_DIRTY bit back. One of the problem was to find a place in pte entry where we can save the _PTE_SWP_SOFT_DIRTY bit while page is in swap. The _PAGE_PSE was chosen for that, it doesn't intersect with swap entry format stored in pte. Reported-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Acked-by: Pavel Emelyanov <xemul@parallels.com> Cc: Matt Mackall <mpm@selenic.com> Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Peter Zijlstra <peterz@infradead.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Reviewed-by: Minchan Kim <minchan@kernel.org> Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* memcg: don't initialize kmem-cache destroying work for root cachesAndrey Vagin2013-08-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | struct memcg_cache_params has a union. Different parts of this union are used for root and non-root caches. A part with destroying work is used only for non-root caches. I fixed the same problem in another place v3.9-rc1-16204-gf101a94, but didn't notice this one. This patch fixes the kernel panic: [ 46.848187] BUG: unable to handle kernel paging request at 000000fffffffeb8 [ 46.849026] IP: [<ffffffff811a484c>] kmem_cache_destroy_memcg_children+0x6c/0xc0 [ 46.849092] PGD 0 [ 46.849092] Oops: 0000 [#1] SMP ... Signed-off-by: Andrey Vagin <avagin@openvz.org> Cc: Glauber Costa <glommer@openvz.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Balbir Singh <bsingharora@gmail.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: <stable@vger.kernel.org> [3.9.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds2013-08-12
|\ | | | | | | | | | | | | | | | | | | | | | | | | Pull CIFS fixes from Steve French: "A set of small cifs fixes, including 3 relating to symlink handling" * 'for-next' of git://git.samba.org/sfrench/cifs-2.6: cifs: don't instantiate new dentries in readdir for inodes that need to be revalidated immediately cifs: set sb->s_d_op before calling d_make_root() cifs: fix bad error handling in crypto code cifs: file: initialize oparms.reconnect before using it Do not attempt to do cifs operations reading symlinks with SMB2 cifs: extend the buffer length enought for sprintf() using
| * cifs: don't instantiate new dentries in readdir for inodes that need to be ↵Jeff Layton2013-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | revalidated immediately David reported that commit c2b93e06 (cifs: only set ops for inodes in I_NEW state) caused a regression with mfsymlinks. Prior to that patch, if a mfsymlink dentry was instantiated at readdir time, the inode would get a new set of ops when it was revalidated. After that patch, this did not occur. This patch addresses this by simply skipping instantiating dentries in the readdir codepath when we know that they will need to be immediately revalidated. The next attempt to use that dentry will cause a new lookup to occur (which is basically what we want to happen anyway). Cc: <stable@vger.kernel.org> Cc: "Stefan (metze) Metzmacher" <metze@samba.org> Cc: Sachin Prabhu <sprabhu@redhat.com> Reported-and-Tested-by: David McBride <dwm37@cam.ac.uk> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
| * cifs: set sb->s_d_op before calling d_make_root()Jeff Layton2013-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the s_root dentry doesn't get its d_op pointer set to anything. This breaks lookups in the root of case-insensitive mounts since that relies on having d_hash and d_compare routines that know to treat the filename as case-insensitive. cifs.ko has been broken this way for a long time, but commit 1c929cfe6 ("switch cifs"), added a cryptic comment which is removed in the patch below, which makes me wonder if this was done deliberately for some reason. It's not clear to me why we'd want the s_root not to have d_op set properly. It may have something to do with d_automount or d_revalidate on the root, but my suspicion in looking over the code is that Al was just trying to preserve the existing behavior when changing this code over to use s_d_op. This patch changes it so that we set s_d_op before calling d_make_root and removes the comment. I tested mounting, accessing and unmounting several types of shares (including DFS referrals) and everything still seemed to work OK afterward. I could be missing something however, so please do let me know if I am. Reported-by: Jan-Marek Glogowski <glogow@fbihome.de> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Ian Kent <raven@themaw.net> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
| * cifs: fix bad error handling in crypto codeJeff Layton2013-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Jarod reported an Oops like when testing with fips=1: CIFS VFS: could not allocate crypto hmacmd5 CIFS VFS: could not crypto alloc hmacmd5 rc -2 CIFS VFS: Error -2 during NTLMSSP authentication CIFS VFS: Send error in SessSetup = -2 BUG: unable to handle kernel NULL pointer dereference at 000000000000004e IP: [<ffffffff812b5c7a>] crypto_destroy_tfm+0x1a/0x90 PGD 0 Oops: 0000 [#1] SMP Modules linked in: md4 nls_utf8 cifs dns_resolver fscache kvm serio_raw virtio_balloon virtio_net mperf i2c_piix4 cirrus drm_kms_helper ttm drm i2c_core virtio_blk ata_generic pata_acpi CPU: 1 PID: 639 Comm: mount.cifs Not tainted 3.11.0-0.rc3.git0.1.fc20.x86_64 #1 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 task: ffff88007bf496e0 ti: ffff88007b080000 task.ti: ffff88007b080000 RIP: 0010:[<ffffffff812b5c7a>] [<ffffffff812b5c7a>] crypto_destroy_tfm+0x1a/0x90 RSP: 0018:ffff88007b081d10 EFLAGS: 00010282 RAX: 0000000000001f1f RBX: ffff880037422000 RCX: ffff88007b081fd8 RDX: 000000000000001f RSI: 0000000000000006 RDI: fffffffffffffffe RBP: ffff88007b081d30 R08: ffff880037422000 R09: ffff88007c090100 R10: 0000000000000000 R11: 00000000fffffffe R12: fffffffffffffffe R13: ffff880037422000 R14: ffff880037422000 R15: 00000000fffffffe FS: 00007fc322f4f780(0000) GS:ffff88007fc80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 000000000000004e CR3: 000000007bdaa000 CR4: 00000000000006e0 Stack: ffffffff81085845 ffff880037422000 ffff8800375e7400 ffff880037422000 ffff88007b081d48 ffffffffa0176022 ffff880037422000 ffff88007b081d60 ffffffffa015c07b ffff880037600600 ffff88007b081dc8 ffffffffa01610e1 Call Trace: [<ffffffff81085845>] ? __cancel_work_timer+0x75/0xf0 [<ffffffffa0176022>] cifs_crypto_shash_release+0x82/0xf0 [cifs] [<ffffffffa015c07b>] cifs_put_tcp_session+0x8b/0xe0 [cifs] [<ffffffffa01610e1>] cifs_mount+0x9d1/0xad0 [cifs] [<ffffffffa014ff50>] cifs_do_mount+0xa0/0x4d0 [cifs] [<ffffffff811ab6e9>] mount_fs+0x39/0x1b0 [<ffffffff811c466f>] vfs_kern_mount+0x5f/0xf0 [<ffffffff811c6a9e>] do_mount+0x23e/0xa20 [<ffffffff811c66e6>] ? copy_mount_options+0x36/0x170 [<ffffffff811c7303>] SyS_mount+0x83/0xc0 [<ffffffff8165c8d9>] system_call_fastpath+0x16/0x1b Code: eb 9e 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 55 48 89 e5 41 55 41 54 49 89 fc 53 48 83 ec 08 48 85 ff 74 46 <48> 83 7e 48 00 48 8b 5e 50 74 4b 48 89 f7 e8 83 fc ff ff 4c 8b RIP [<ffffffff812b5c7a>] crypto_destroy_tfm+0x1a/0x90 RSP <ffff88007b081d10> CR2: 000000000000004e The cifs code allocates some crypto structures. If that fails, it returns an error, but it leaves the pointers set to their PTR_ERR values. Then later when it tries to clean up, it sees that those values are non-NULL and then passes them to the routine that frees them. Fix this by setting the pointers to NULL after collecting the error code in this situation. Cc: Sachin Prabhu <sprabhu@redhat.com> Reported-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
| * cifs: file: initialize oparms.reconnect before using itAndi Shyti2013-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the cifs_reopen_file function, if the following statement is asserted: (tcon->unix_ext && cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP & (tcon->fsUnixInfo.Capability))) and we succeed to open with cifs_posix_open, the function jumps to the label reopen_success and checks for oparms.reconnect which is not initialized. This issue has been reported by scan.coverity.com Signed-off-by: Andi Shyti <andi@etezian.org> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
| * Do not attempt to do cifs operations reading symlinks with SMB2Steve French2013-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When use of symlinks is enabled (mounting with mfsymlinks option) to non-Samba servers, we always tried to use cifs, even when we were mounted with SMB2 or SMB3, which causes the server to drop the network connection. This patch separates out the protocol specific operations for cifs from the code which recognizes symlinks, and fixes the problem where with SMB2 mounts we attempt cifs operations to open and read symlinks. The next patch will add support for SMB2 for opening and reading symlinks. Additional followon patches will address the similar problem creating symlinks. Signed-off-by: Steve French <smfrench@gmail.com>
| * cifs: extend the buffer length enought for sprintf() usingChen Gang2013-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For cifs_set_cifscreds() in "fs/cifs/connect.c", 'desc' buffer length is 'CIFSCREDS_DESC_SIZE' (56 is less than 256), and 'ses->domainName' length may be "255 + '\0'". The related sprintf() may cause memory overflow, so need extend related buffer enough to hold all things. It is also necessary to be sure of 'ses->domainName' must be less than 256, and define the related macro instead of hard code number '256'. Signed-off-by: Chen Gang <gang.chen@asianux.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Reviewed-by: Scott Lovenberg <scott.lovenberg@gmail.com> CC: <stable@vger.kernel.org> Signed-off-by: Steve French <smfrench@gmail.com>
* | Merge tag 'ext4_for_linus' of ↵Linus Torvalds2013-08-12
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull more ext4 bugfixes from Ted Ts'o: "A number of miscellaneous ext4 bugs fixes for v3.11, including a fix so that if ext4 is built as a module, to allow it to be unloaded" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: flush the extent status cache during EXT4_IOC_SWAP_BOOT ext4: fix mount/remount error messages for incompatible mount options ext4: allow the mount options nodelalloc and data=journal
| * | ext4: flush the extent status cache during EXT4_IOC_SWAP_BOOTTheodore Ts'o2013-08-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously we weren't swapping only some of the extent_status LRU fields during the processing of the EXT4_IOC_SWAP_BOOT ioctl. The much safer thing to do is to just completely flush the extent status tree when doing the swap. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: Zheng Liu <gnehzuil.liu@gmail.com> Cc: stable@vger.kernel.org
| * | ext4: fix mount/remount error messages for incompatible mount optionsPiotr Sarna2013-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 5688978 ("ext4: improve handling of conflicting mount options") introduced incorrect messages shown while choosing wrong mount options. First of all, both cases of incorrect mount options, "data=journal,delalloc" and "data=journal,dioread_nolock" result in the same error message. Secondly, the problem above isn't solved for remount option: the mismatched parameter is simply ignored. Moreover, ext4_msg states that remount with options "data=journal,delalloc" succeeded, which is not true. To fix it up, I added a simple check after parse_options() call to ensure that data=journal and delalloc/dioread_nolock parameters are not present at the same time. Signed-off-by: Piotr Sarna <p.sarna@partner.samsung.com> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: stable@vger.kernel.org
| * | ext4: allow the mount options nodelalloc and data=journalTheodore Ts'o2013-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 26092bf ("ext4: use a table-driven handler for mount options") wrongly disallows the specifying the mount options nodelalloc and data=journal simultaneously. This is incorrect; it should have only disallowed the combination of delalloc and data=journal simultaneously. Reported-by: Piotr Sarna <p.sarna@partner.samsung.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: stable@vger.kernel.org
* | | Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds2013-08-12
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull w/w mutex deadlock injection fix from Ingo Molnar. This bug made the CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y option largely useless, but wouldn't affect normal users. * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: mutex: Fix w/w mutex deadlock injection
| * | | mutex: Fix w/w mutex deadlock injectionMaarten Lankhorst2013-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The check needs to be for > 1, because ctx->acquired is already incremented. This will prevent ww_mutex_lock_slow from returning -EDEADLK and not locking the mutex. It caused a lot of false gpu lockups on radeon with CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y because a function that shouldn't be able to return -EDEADLK did. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/51F775B5.201@canonical.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | | | Linux 3.11-rc5Linus Torvalds2013-08-11
| | | |
* | | | Merge tag 'scsi-fixes' of ↵Linus Torvalds2013-08-11
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "This is three bug fixes: An fnic warning caused by sleeping under a lock, a major regression with our updated WRITE SAME/UNMAP logic which caused tons of USB devices (and one RAID card) to cease to function and a megaraid_sas firmware initialisation problem which causes kdump failures" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: [SCSI] Don't attempt to send extended INQUIRY command if skip_vpd_pages is set [SCSI] fnic: BUG: sleeping function called from invalid context during probe [SCSI] megaraid_sas: megaraid_sas driver init fails in kdump kernel
| * | | | [SCSI] Don't attempt to send extended INQUIRY command if skip_vpd_pages is setMartin K. Petersen2013-08-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a device has the skip_vpd_pages flag set we should simply fail the scsi_get_vpd_page() call. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Tested-by: Stuart Foster <smf.linux@ntlworld.com> Cc: stable@vger.kernel.org Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * | | | [SCSI] fnic: BUG: sleeping function called from invalid context during probeChris Leech2013-08-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I hit this during driver probe with the latest fnic updates (this trace is from a backport into a distro kernel, but the issue is the same). > BUG: sleeping function called from invalid context at mm/slab.c:3113 > in_atomic(): 0, irqs_disabled(): 1, pid: 610, name: work_for_cpu > INFO: lockdep is turned off. > irq event stamp: 0 > hardirqs last enabled at (0): [<(null)>] (null) > hardirqs last disabled at (0): [<ffffffff81070aa5>] > copy_process+0x5e5/0x1670 > softirqs last enabled at (0): [<ffffffff81070aa5>] > copy_process+0x5e5/0x1670 > softirqs last disabled at (0): [<(null)>] (null) > Pid: 610, comm: work_for_cpu Not tainted > Call Trace: > [<ffffffff810b2d10>] ? print_irqtrace_events+0xd0/0xe0 > [<ffffffff8105c1a7>] ? __might_sleep+0xf7/0x130 > [<ffffffff81184efb>] ? kmem_cache_alloc_trace+0x20b/0x2d0 > [<ffffffff8109709e>] ? __create_workqueue_key+0x3e/0x1d0 > [<ffffffff8109709e>] ? __create_workqueue_key+0x3e/0x1d0 > [<ffffffffa00c101c>] ? fnic_probe+0x977/0x11aa [fnic] > [<ffffffffa00c1048>] ? fnic_probe+0x9a3/0x11aa [fnic] > [<ffffffff81096f00>] ? do_work_for_cpu+0x0/0x30 > [<ffffffff812c6da7>] ? local_pci_probe+0x17/0x20 > [<ffffffff81096f18>] ? do_work_for_cpu+0x18/0x30 > [<ffffffff8109cdc6>] ? kthread+0x96/0xa0 > [<ffffffff8100c1ca>] ? child_rip+0xa/0x20 > [<ffffffff81550f80>] ? _spin_unlock_irq+0x30/0x40 > [<ffffffff8100bb10>] ? restore_args+0x0/0x30 > [<ffffffff8109cd30>] ? kthread+0x0/0xa0 > [<ffffffff8100c1c0>] ? child_rip+0x0/0x20 The problem is in this hunk of "FIP VLAN Discovery Feature Support" (d3c995f1dcf938f1084388d92b8fb97bec366566) create_singlethreaded_workqueue cannot be called with irqs disabled @@ -620,7 +634,29 @@ static int __devinit fnic_probe(struct pci_dev *pdev, vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0); vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS); vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); + fnic->set_vlan = fnic_set_vlan; fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO); + setup_timer(&fnic->fip_timer, fnic_fip_notify_timer, + (unsigned long)fnic); + spin_lock_init(&fnic->vlans_lock); + INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame); + INIT_WORK(&fnic->event_work, fnic_handle_event); + skb_queue_head_init(&fnic->fip_frame_queue); + spin_lock_irqsave(&fnic_list_lock, flags); + if (!fnic_fip_queue) { + fnic_fip_queue = + create_singlethread_workqueue("fnic_fip_q"); + if (!fnic_fip_queue) { + spin_unlock_irqrestore(&fnic_list_lock, flags); + printk(KERN_ERR PFX "fnic FIP work queue " + "create failed\n"); + err = -ENOMEM; + goto err_out_free_max_pool; + } + } + spin_unlock_irqrestore(&fnic_list_lock, flags); + INIT_LIST_HEAD(&fnic->evlist); + INIT_LIST_HEAD(&fnic->vlans); } else { shost_printk(KERN_INFO, fnic->lport->host, "firmware uses non-FIP mode\n"); The attempts to make fnic_fip_queue a single instance for the driver while it's being created in probe look awkward anyway, why is this not created in fnic_init_module like the event workqueue? Signed-off-by: Chris Leech <cleech@redhat.com> Tested-by: Anantha Tungarakodi <atungara@cisco.com> Acked-by: Hiral Patel <hiralpat@cisco.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| * | | | [SCSI] megaraid_sas: megaraid_sas driver init fails in kdump kernelSumit.Saxena@lsi.com2013-08-02
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: When Hardware IOMMU is on, megaraid_sas driver initialization fails in kdump kernel with LSI MegaRAID controller(device id-0x73). Actually this issue needs fix in firmware, but for firmware running in field, this driver fix is proposed to resolve the issue. At firmware initialization time, if firmware does not come to ready state, driver will reset the adapter and retry for firmware transition to ready state unconditionally(not only executed for kdump kernel). Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Cc: stable@vger.kernel.org Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* | | | Merge branch 'merge' of ↵Linus Torvalds2013-08-11
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc fixes from Ben Herrenschmidt: "This includes small series from Michael Neuling to fix a couple of nasty remaining problems with the new Power8 support, also targeted at stable 3.10, without which some new userspace accessible registers aren't properly context switched, and in some case, can be clobbered by the user of transactional memory. Along with that, a few slightly more minor things, such as a missing Kconfig option to enable handling of denorm exceptions when not running under a hypervisor (or userspace will randomly crash when hitting denorms with the vector unit), some nasty bugs in the new pstore oops code, and other simple bug fixes worth having in now. Note: I picked up the two powerpc KVM fixes as Alex Graf asked me to handle KVM bits while he is on vacation. However I'll let him decide whether they should go to -stable or not when he is back" * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc/tm: Fix context switching TAR, PPR and DSCR SPRs powerpc: Save the TAR register earlier powerpc: Fix context switch DSCR on POWER8 powerpc: Rework setting up H/FSCR bit definitions powerpc: Fix hypervisor facility unavaliable vector number powerpc/kvm/book3s_pr: Return appropriate error when allocation fails powerpc/kvm: Add signed type cast for comparation powerpc/eeh: Add missing procfs entry for PowerNV powerpc/pseries: Add backward compatibilty to read old kernel oops-log powerpc/pseries: Fix buffer overflow when reading from pstore powerpc: On POWERNV enable PPC_DENORMALISATION by default
| * | | | powerpc/tm: Fix context switching TAR, PPR and DSCR SPRsMichael Neuling2013-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a transaction is rolled back, the Target Address Register (TAR), Processor Priority Register (PPR) and Data Stream Control Register (DSCR) should be restored to the checkpointed values before the transaction began. Any changes to these SPRs inside the transaction should not be visible in the abort handler. Currently Linux doesn't save or restore the checkpointed TAR, PPR or DSCR. If we preempt a processes inside a transaction which has modified any of these, on process restore, that same transaction may be aborted we but we won't see the checkpointed versions of these SPRs. This adds checkpointed versions of these SPRs to the thread_struct and adds the save/restore of these three SPRs to the treclaim/trechkpt code. Without this if any of these SPRs are modified during a transaction, users may incorrectly see a speculated SPR value even if the transaction is aborted. Signed-off-by: Michael Neuling <mikey@neuling.org> Cc: <stable@vger.kernel.org> [v3.10] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc: Save the TAR register earlierMichael Neuling2013-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This moves us to save the Target Address Register (TAR) a earlier in __switch_to. It introduces a new function save_tar() to do this. We need to save the TAR earlier as we will overwrite it in the transactional memory reclaim/recheckpoint path. We are going to do this in a subsequent patch which will fix saving the TAR register when it's modified inside a transaction. Signed-off-by: Michael Neuling <mikey@neuling.org> Cc: <stable@vger.kernel.org> [v3.10] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc: Fix context switch DSCR on POWER8Michael Neuling2013-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | POWER8 allows the DSCR to be accessed directly from userspace via a new SPR number 0x3 (Rather than 0x11. DSCR SPR number 0x11 is still used on POWER8 but like POWER7, is only accessible in HV and OS modes). Currently, we allow this by setting H/FSCR DSCR bit on boot. Unfortunately this doesn't work, as the kernel needs to see the DSCR change so that it knows to no longer restore the system wide version of DSCR on context switch (ie. to set thread.dscr_inherit). This clears the H/FSCR DSCR bit initially. If a process then accesses the DSCR (via SPR 0x3), it'll trap into the kernel where we set thread.dscr_inherit in facility_unavailable_exception(). We also change _switch() so that we set or clear the H/FSCR DSCR bit based on the thread.dscr_inherit. Signed-off-by: Michael Neuling <mikey@neuling.org> Cc: <stable@vger.kernel.org> [v3.10] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc: Rework setting up H/FSCR bit definitionsMichael Neuling2013-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reworks the Facility Status and Control Regsiter (FSCR) config bit definitions so that we can access the bit numbers. This is needed for a subsequent patch to fix the userspace DSCR handling. HFSCR and FSCR bit definitions are the same, so reuse them. Signed-off-by: Michael Neuling <mikey@neuling.org> Cc: <stable@vger.kernel.org> [v3.10] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc: Fix hypervisor facility unavaliable vector numberMichael Neuling2013-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently if we take hypervisor facility unavaliable (from 0xf80/0x4f80) we mark it as an OS facility unavaliable (0xf60) as the two share the same code path. The becomes a problem in facility_unavailable_exception() as we aren't able to see the hypervisor facility unavailable exceptions. Below fixes this by duplication the required macros. Signed-off-by: Michael Neuling <mikey@neuling.org> Cc: <stable@vger.kernel.org> [v3.10] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc/kvm/book3s_pr: Return appropriate error when allocation failsThadeu Lima de Souza Cascardo2013-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | err was overwritten by a previous function call, and checked to be 0. If the following page allocation fails, 0 is going to be returned instead of -ENOMEM. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc/kvm: Add signed type cast for comparationChen Gang2013-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'rmls' is 'unsigned long', lpcr_rmls() will return negative number when failure occurs, so it need a type cast for comparing. 'lpid' is 'unsigned long', kvmppc_alloc_lpid() return negative number when failure occurs, so it need a type cast for comparing. Signed-off-by: Chen Gang <gang.chen@asianux.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc/eeh: Add missing procfs entry for PowerNVMike Qiu2013-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The procfs entry for global statistics has been missed on PowerNV platform and the patch is going to add that. Signed-off-by: Mike Qiu <qiudayu@linux.vnet.ibm.com> Acked-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc/pseries: Add backward compatibilty to read old kernel oops-logAruna Balakrishnaiah2013-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Older kernels has just length information in their header. Handle it while reading old kernel oops log from pstore. Applies on top of powerpc/pseries: Fix buffer overflow when reading from pstore Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc/pseries: Fix buffer overflow when reading from pstoreAruna Balakrishnaiah2013-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When reading from pstore there is a buffer overflow during decompression due to the header added in unzip_oops. Remove unzip_oops and call pstore_decompress directly in nvram_pstore_read. Allocate buffer of size report_length of the oops header as header will not be deallocated in pstore. Since we have 'openssl' command line tool to decompress the compressed data, dump the compressed data in case decompression fails instead of not dumping anything. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc: On POWERNV enable PPC_DENORMALISATION by defaultAnton Blanchard2013-08-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want PPC_DENORMALISATION enabled when POWERNV is enabled, so update the Kconfig. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: <stable@vger.kernel.org>
* | | | | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2013-08-11
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull s390 kvm fixes from Paolo Bonzini: "Two fixes for s390" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: s390: fix pfmf non-quiescing control handling KVM: s390: move kvm_guest_enter,exit closer to sie
| * | | | | KVM: s390: fix pfmf non-quiescing control handlingHeiko Carstens2013-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the test within handle_pfmf() if the host has the NQ key-setting facility installed. Right now the code would incorrectly generate a program check in the guest if the NQ control bit for a pfmf request was set and if the host has the NQ key-setting facility installed. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| * | | | | KVM: s390: move kvm_guest_enter,exit closer to sieDominik Dingel2013-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Any uaccess between guest_enter and guest_exit could trigger a page fault, the page fault handler would handle it as a guest fault and translate a user address as guest address. Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> CC: stable@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* | | | | | Merge branch 'i2c/for-current' of ↵Linus Torvalds2013-08-11
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c fixes from Wolfram Sang: "Some driver bugfixes for the I2C subsystem" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: mv64xxx: Document the newly introduced allwinner compatible i2c: Fix Kontron PLD prescaler calculation i2c: i2c-mxs: Use DMA mode even for small transfers
| * | | | | | i2c: mv64xxx: Document the newly introduced allwinner compatibleMaxime Ripard2013-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * | | | | | i2c: Fix Kontron PLD prescaler calculationMichael Brunner2013-08-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add some necessary braces that have been removed during driver cleanup. This fixes the I2C prescaler calculation. Signed-off-by: Michael Brunner <michael.brunner@kontron.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * | | | | | i2c: i2c-mxs: Use DMA mode even for small transfersFabio Estevam2013-08-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recently we have been seing some reports about PIO mode not working properly. - http://www.spinics.net/lists/linux-i2c/msg11985.html - http://marc.info/?l=linux-i2c&m=137235593101385&w=2 - https://lkml.org/lkml/2013/6/24/430 Let's use DMA mode even for small transfers. Without this patch, i2c reads the incorrect sgtl5000 version on a mx28evk when touchscreen is enabled: [ 5.856270] sgtl5000 0-000a: Device with ID register 0 is not a sgtl5000 [ 9.877307] sgtl5000 0-000a: ASoC: failed to probe CODEC -19 [ 9.883528] mxs-sgtl5000 sound.12: ASoC: failed to instantiate card -19 [ 9.892955] mxs-sgtl5000 sound.12: snd_soc_register_card failed (-19) Cc: <stable@vger.kernel.org> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Marek Vasut <marex@denx.de> [wsa: we have a proper solution for -next, so this non intrusive solution is OK for now] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* | | | | | | Merge branch 'for-linus' of ↵Linus Torvalds2013-08-10
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs fixes from Chris Mason: "These are assorted fixes, mostly from Josef nailing down xfstests runs. Zach also has a long standing fix for problems with readdir wrapping f_pos (or ctx->pos) These patches were spread out over different bases, so I rebased things on top of rc4 and retested overnight" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: btrfs: don't loop on large offsets in readdir Btrfs: check to see if root_list is empty before adding it to dead roots Btrfs: release both paths before logging dir/changed extents Btrfs: allow splitting of hole em's when dropping extent cache Btrfs: make sure the backref walker catches all refs to our extent Btrfs: fix backref walking when we hit a compressed extent Btrfs: do not offset physical if we're compressed Btrfs: fix extent buffer leak after backref walking Btrfs: fix a bug of snapshot-aware defrag to make it work on partial extents btrfs: fix file truncation if FALLOC_FL_KEEP_SIZE is specified
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-15 11:34:52 -0500