- 24 7月, 2013 2 次提交
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由 Anton Blanchard 提交于
Module CRCs are implemented as absolute symbols that get resolved by a linker script. We build an intermediate .o that contains an unresolved symbol for each CRC. genksysms parses this .o, calculates the CRCs and writes a linker script that "resolves" the symbols to the calculated CRC. Unfortunately the ppc64 relocatable kernel sees these CRCs as symbols that need relocating and relocates them at boot. Commit d4703aef (module: handle ppc64 relocating kcrctabs when CONFIG_RELOCATABLE=y) added a hook to reverse the bogus relocations. Part of this patch created a symbol at 0x0: # head -2 /proc/kallsyms 0000000000000000 T reloc_start c000000000000000 T .__start This reloc_start symbol is causing lots of confusion to perf. It thinks reloc_start is a massive function that stretches from 0x0 to 0xc000000000000000 and we get various cryptic errors out of perf, including: problem incrementing symbol count, skipping event This patch removes the reloc_start linker script label and instead defines it as PHYSICAL_START. We also need to wrap it with CONFIG_PPC64 because the ppc32 kernel can set a non zero PHYSICAL_START at compile time and we wouldn't want to subtract it from the CRCs in that case. Signed-off-by: NAnton Blanchard <anton@samba.org> Cc: <stable@kernel.org> Acked-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Michael Neuling 提交于
POWER8 comes with two different PVRs. This patch enables the additional PVR in the cputable. The existing entry (PVR=0x4b) is renamed to POWER8E and the new entry (PVR=0x4d) is given POWER8. Signed-off-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 22 7月, 2013 2 次提交
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由 Linus Torvalds 提交于
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm由 Linus Torvalds 提交于
Pull ACPI video support fixes from Rafael Wysocki: "I'm sending a separate pull request for this as it may be somewhat controversial. The breakage addressed here is not really new and the fixes may not satisfy all users of the affected systems, but we've had so much back and forth dance in this area over the last several weeks that I think it's time to actually make some progress. The source of the problem is that about a year ago we started to tell BIOSes that we're compatible with Windows 8, which we really need to do, because some systems shipping with Windows 8 are tested with it and nothing else, so if we tell their BIOSes that we aren't compatible with Windows 8, we expose our users to untested BIOS/AML code paths. However, as it turns out, some Windows 8-specific AML code paths are not tested either, because Windows 8 actually doesn't use the ACPI methods containing them, so if we declare Windows 8 compatibility and attempt to use those ACPI methods, things break. That occurs mostly in the backlight support area where in particular the _BCM and _BQC methods are plain unusable on some systems if the OS declares Windows 8 compatibility. [ The additional twist is that they actually become usable if the OS says it is not compatible with Windows 8, but that may cause problems to show up elsewhere ] Investigation carried out by Matthew Garrett indicates that what Windows 8 does about backlight is to leave backlight control up to individual graphics drivers. At least there's evidence that it does that if the Intel graphics driver is used, so we've decided to follow Windows 8 in that respect and allow i915 to control backlight (Daniel likes that part). The first commit from Aaron Lu makes ACPICA export the variable from which we can infer whether or not the BIOS believes that we are compatible with Windows 8. The second commit from Matthew Garrett prepares the ACPI video driver by making it initialize the ACPI backlight even if it is not going to be used afterward (that is needed for backlight control to work on Thinkpads). The third commit implements the actual workaround making i915 take over backlight control if the firmware thinks it's dealing with Windows 8 and is based on the work of multiple developers, including Matthew Garrett, Chun-Yi Lee, Seth Forshee, and Aaron Lu. The final commit from Aaron Lu makes us follow Windows 8 by informing the firmware through the _DOS method that it should not carry out automatic brightness changes, so that brightness can be controlled by GUI. Hopefully, this approach will allow us to avoid using blacklists of systems that should not declare Windows 8 compatibility just to avoid backlight control problems in the future. - Change from Aaron Lu makes ACPICA export a variable which can be used by driver code to determine whether or not the BIOS believes that we are compatible with Windows 8. - Change from Matthew Garrett makes the ACPI video driver initialize the ACPI backlight even if it is not going to be used afterward (that is needed for backlight control to work on Thinkpads). - Fix from Rafael J Wysocki implements Windows 8 backlight support workaround making i915 take over bakclight control if the firmware thinks it's dealing with Windows 8. Based on the work of multiple developers including Matthew Garrett, Chun-Yi Lee, Seth Forshee, and Aaron Lu. - Fix from Aaron Lu makes the kernel follow Windows 8 by informing the firmware through the _DOS method that it should not carry out automatic brightness changes, so that brightness can be controlled by GUI" * tag 'acpi-video-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / video: no automatic brightness changes by win8-compatible firmware ACPI / video / i915: No ACPI backlight if firmware expects Windows 8 ACPI / video: Always call acpi_video_init_brightness() on init ACPICA: expose OSI version
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- 21 7月, 2013 8 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4由 Linus Torvalds 提交于
Pull ext[34] tmpfile bugfix from Ted Ts'o: "Fix regression caused by commit af51a2ac which added ->tmpfile() support (along with a similar fix for ext3)" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext3: fix a BUG when opening a file with O_TMPFILE flag ext4: fix a BUG when opening a file with O_TMPFILE flag
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由 Zheng Liu 提交于
When we try to open a file with O_TMPFILE flag, we will trigger a bug. The root cause is that in ext4_orphan_add() we check ->i_nlink == 0 and this check always fails because we set ->i_nlink = 1 in inode_init_always(). We can use the following program to trigger it: int main(int argc, char *argv[]) { int fd; fd = open(argv[1], O_TMPFILE, 0666); if (fd < 0) { perror("open "); return -1; } close(fd); return 0; } The oops message looks like this: kernel: kernel BUG at fs/ext3/namei.c:1992! kernel: invalid opcode: 0000 [#1] SMP kernel: Modules linked in: ext4 jbd2 crc16 cpufreq_ondemand ipv6 dm_mirror dm_region_hash dm_log dm_mod parport_pc parport serio_raw sg dcdbas pcspkr i2c_i801 ehci_pci ehci_hcd button acpi_cpufreq mperf e1000e ptp pps_core ttm drm_kms_helper drm hwmon i2c_algo_bit i2c_core ext3 jbd sd_mod ahci libahci libata scsi_mod uhci_hcd kernel: CPU: 0 PID: 2882 Comm: tst_tmpfile Not tainted 3.11.0-rc1+ #4 kernel: Hardware name: Dell Inc. OptiPlex 780 /0V4W66, BIOS A05 08/11/2010 kernel: task: ffff880112d30050 ti: ffff8801124d4000 task.ti: ffff8801124d4000 kernel: RIP: 0010:[<ffffffffa00db5ae>] [<ffffffffa00db5ae>] ext3_orphan_add+0x6a/0x1eb [ext3] kernel: RSP: 0018:ffff8801124d5cc8 EFLAGS: 00010202 kernel: RAX: 0000000000000000 RBX: ffff880111510128 RCX: ffff8801114683a0 kernel: RDX: 0000000000000000 RSI: ffff880111510128 RDI: ffff88010fcf65a8 kernel: RBP: ffff8801124d5d18 R08: 0080000000000000 R09: ffffffffa00d3b7f kernel: R10: ffff8801114683a0 R11: ffff8801032a2558 R12: 0000000000000000 kernel: R13: ffff88010fcf6800 R14: ffff8801032a2558 R15: ffff8801115100d8 kernel: FS: 00007f5d172b5700(0000) GS:ffff880117c00000(0000) knlGS:0000000000000000 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b kernel: CR2: 00007f5d16df15d0 CR3: 0000000110b1d000 CR4: 00000000000407f0 kernel: Stack: kernel: 000000000000000c ffff8801048a7dc8 ffff8801114685a8 ffffffffa00b80d7 kernel: ffff8801124d5e38 ffff8801032a2558 ffff88010ce24d68 0000000000000000 kernel: ffff88011146b300 ffff8801124d5d44 ffff8801124d5d78 ffffffffa00db7e1 kernel: Call Trace: kernel: [<ffffffffa00b80d7>] ? journal_start+0x8c/0xbd [jbd] kernel: [<ffffffffa00db7e1>] ext3_tmpfile+0xb2/0x13b [ext3] kernel: [<ffffffff821076f8>] path_openat+0x11f/0x5e7 kernel: [<ffffffff821c86b4>] ? list_del+0x11/0x30 kernel: [<ffffffff82065fa2>] ? __dequeue_entity+0x33/0x38 kernel: [<ffffffff82107cd5>] do_filp_open+0x3f/0x8d kernel: [<ffffffff82112532>] ? __alloc_fd+0x50/0x102 kernel: [<ffffffff820f9296>] do_sys_open+0x13b/0x1cd kernel: [<ffffffff820f935c>] SyS_open+0x1e/0x20 kernel: [<ffffffff82398c02>] system_call_fastpath+0x16/0x1b kernel: Code: 39 c7 0f 85 67 01 00 00 0f b7 03 25 00 f0 00 00 3d 00 40 00 00 74 18 3d 00 80 00 00 74 11 3d 00 a0 00 00 74 0a 83 7b 48 00 74 04 <0f> 0b eb fe 49 8b 85 50 03 00 00 4c 89 f6 48 c7 c7 c0 99 0e a0 kernel: RIP [<ffffffffa00db5ae>] ext3_orphan_add+0x6a/0x1eb [ext3] kernel: RSP <ffff8801124d5cc8> Here we couldn't call clear_nlink() directly because in d_tmpfile() we will call inode_dec_link_count() to decrease ->i_nlink. So this commit tries to call d_tmpfile() before ext4_orphan_add() to fix this problem. Signed-off-by: NZheng Liu <wenqing.lz@taobao.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu> Cc: Jan Kara <jack@suse.cz> Cc: Al Viro <viro@zeniv.linux.org.uk>
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由 Zheng Liu 提交于
When we try to open a file with O_TMPFILE flag, we will trigger a bug. The root cause is that in ext4_orphan_add() we check ->i_nlink == 0 and this check always fails because we set ->i_nlink = 1 in inode_init_always(). We can use the following program to trigger it: int main(int argc, char *argv[]) { int fd; fd = open(argv[1], O_TMPFILE, 0666); if (fd < 0) { perror("open "); return -1; } close(fd); return 0; } The oops message looks like this: kernel BUG at fs/ext4/namei.c:2572! invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC Modules linked in: dlci bridge stp hidp cmtp kernelcapi l2tp_ppp l2tp_netlink l2tp_core sctp libcrc32c rfcomm tun fuse nfnetli nk can_raw ipt_ULOG can_bcm x25 scsi_transport_iscsi ipx p8023 p8022 appletalk phonet psnap vmw_vsock_vmci_transport af_key vmw_vmci rose vsock atm can netrom ax25 af_rxrpc ir da pppoe pppox ppp_generic slhc bluetooth nfc rfkill rds caif_socket caif crc_ccitt af_802154 llc2 llc snd_hda_codec_realtek snd_hda_intel snd_hda_codec serio_raw snd_pcm pcsp kr edac_core snd_page_alloc snd_timer snd soundcore r8169 mii sr_mod cdrom pata_atiixp radeon backlight drm_kms_helper ttm CPU: 1 PID: 1812571 Comm: trinity-child2 Not tainted 3.11.0-rc1+ #12 Hardware name: Gigabyte Technology Co., Ltd. GA-MA78GM-S2H/GA-MA78GM-S2H, BIOS F12a 04/23/2010 task: ffff88007dfe69a0 ti: ffff88010f7b6000 task.ti: ffff88010f7b6000 RIP: 0010:[<ffffffff8125ce69>] [<ffffffff8125ce69>] ext4_orphan_add+0x299/0x2b0 RSP: 0018:ffff88010f7b7cf8 EFLAGS: 00010202 RAX: 0000000000000000 RBX: ffff8800966d3020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff88007dfe70b8 RDI: 0000000000000001 RBP: ffff88010f7b7d40 R08: ffff880126a3c4e0 R09: ffff88010f7b7ca0 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801271fd668 R13: ffff8800966d2f78 R14: ffff88011d7089f0 R15: ffff88007dfe69a0 FS: 00007f70441a3740(0000) GS:ffff88012a800000(0000) knlGS:00000000f77c96c0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000002834000 CR3: 0000000107964000 CR4: 00000000000007e0 DR0: 0000000000780000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Stack: 0000000000002000 00000020810b6dde 0000000000000000 ffff88011d46db00 ffff8800966d3020 ffff88011d7089f0 ffff88009c7f4c10 ffff88010f7b7f2c ffff88007dfe69a0 ffff88010f7b7da8 ffffffff8125cfac ffff880100000004 Call Trace: [<ffffffff8125cfac>] ext4_tmpfile+0x12c/0x180 [<ffffffff811cba78>] path_openat+0x238/0x700 [<ffffffff8100afc4>] ? native_sched_clock+0x24/0x80 [<ffffffff811cc647>] do_filp_open+0x47/0xa0 [<ffffffff811db73f>] ? __alloc_fd+0xaf/0x200 [<ffffffff811ba2e4>] do_sys_open+0x124/0x210 [<ffffffff81010725>] ? syscall_trace_enter+0x25/0x290 [<ffffffff811ba3ee>] SyS_open+0x1e/0x20 [<ffffffff816ca8d4>] tracesys+0xdd/0xe2 [<ffffffff81001001>] ? start_thread_common.constprop.6+0x1/0xa0 Code: 04 00 00 00 89 04 24 31 c0 e8 c4 77 04 00 e9 43 fe ff ff 66 25 00 d0 66 3d 00 80 0f 84 0e fe ff ff 83 7b 48 00 0f 84 04 fe ff ff <0f> 0b 49 8b 8c 24 50 07 00 00 e9 88 fe ff ff 0f 1f 84 00 00 00 Here we couldn't call clear_nlink() directly because in d_tmpfile() we will call inode_dec_link_count() to decrease ->i_nlink. So this commit tries to call d_tmpfile() before ext4_orphan_add() to fix this problem. Reported-by: NDave Jones <davej@redhat.com> Signed-off-by: NZheng Liu <wenqing.lz@taobao.com> Tested-by: NDarrick J. Wong <darrick.wong@oracle.com> Tested-by: NDave Jones <davej@redhat.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu> Acked-by: NAl Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging由 Linus Torvalds 提交于
Pull staging tree fixes from Greg KH: "Here are a few iio driver fixes for 3.11-rc2. They are still spread across drivers/iio and drivers/staging/iio so they are coming in through this tree. I've also removed the drivers/staging/csr/ driver as the developers who originally sent it to me have moved on to other companies, and CSR still will not send us the specs for the device, making the driver pretty much obsolete and impossible to fix up. Deleting it now prevents people from sending in lots of tiny codingsyle fixes that will never go anywhere. It also helps to offset the large lustre filesystem merge that happened in 3.11-rc1 in the overall 3.11.0 diffstat. :)" * tag 'staging-3.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging: csr: remove driver iio: lps331ap: Fix wrong in_pressure_scale output value iio staging: fix lis3l02dq, read error handling staging:iio:ad7291: add missing .driver_module to struct iio_info iio: ti_am335x_adc: add missing .driver_module to struct iio_info iio: mxs-lradc: Remove useless check in read_raw iio: mxs-lradc: Fix misuse of iio->trig iio: inkern: fix iio_convert_raw_to_processed_unlocked iio: Fix iio_channel_has_info iio:trigger: device_unregister->device_del to avoid double free iio: dac: ad7303: fix error return code in ad7303_probe()
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs由 Linus Torvalds 提交于
Pull vfs fixes from Al Viro: "The sget() one is a long-standing bug and will need to go into -stable (in fact, it had been originally caught in RHEL6), the other two are 3.11-only" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: vfs: constify dentry parameter in d_count() livelock avoidance in sget() allow O_TMPFILE to work with O_WRONLY
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4由 Linus Torvalds 提交于
Pull ext4 bugfixes from Ted Ts'o: "Fixes for 3.11-rc2, sent at 5pm, in the professoinal style. :-)" I'm not sure I like this new level of "professionalism". 9-5, people, 9-5. * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: call ext4_es_lru_add() after handling cache miss ext4: yield during large unlinks ext4: make the extent_status code more robust against ENOMEM failures ext4: simplify calculation of blocks to free on error ext4: fix error handling in ext4_ext_truncate()
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git://git.linux-nfs.org/projects/trondmy/linux-nfs由 Linus Torvalds 提交于
Pull NFS client bugfixes from Trond Myklebust: - Fix a regression against NFSv4 FreeBSD servers when creating a new file - Fix another regression in rpc_client_register() * tag 'nfs-for-3.11-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFSv4: Fix a regression against the FreeBSD server SUNRPC: Fix another issue with rpc_client_register()
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git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-next由 Linus Torvalds 提交于
Pull btrfs fixes from Josef Bacik: "I'm playing the role of Chris Mason this week while he's on vacation. There are a few critical fixes for btrfs here, all regressions and have been tested well" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-next: Btrfs: fix wrong write offset when replacing a device Btrfs: re-add root to dead root list if we stop dropping it Btrfs: fix lock leak when resuming snapshot deletion Btrfs: update drop progress before stopping snapshot dropping
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- 20 7月, 2013 13 次提交
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由 Peng Tao 提交于
so that it can be used in places like d_compare/d_hash without causing a compiler warning. Signed-off-by: NPeng Tao <tao.peng@emc.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Eric Sandeen has found a nasty livelock in sget() - take a mount(2) about to fail. The superblock is on ->fs_supers, ->s_umount is held exclusive, ->s_active is 1. Along comes two more processes, trying to mount the same thing; sget() in each is picking that superblock, bumping ->s_count and trying to grab ->s_umount. ->s_active is 3 now. Original mount(2) finally gets to deactivate_locked_super() on failure; ->s_active is 2, superblock is still ->fs_supers because shutdown will *not* happen until ->s_active hits 0. ->s_umount is dropped and now we have two processes chasing each other: s_active = 2, A acquired ->s_umount, B blocked A sees that the damn thing is stillborn, does deactivate_locked_super() s_active = 1, A drops ->s_umount, B gets it A restarts the search and finds the same superblock. And bumps it ->s_active. s_active = 2, B holds ->s_umount, A blocked on trying to get it ... and we are in the earlier situation with A and B switched places. The root cause, of course, is that ->s_active should not grow until we'd got MS_BORN. Then failing ->mount() will have deactivate_locked_super() shut the damn thing down. Fortunately, it's easy to do - the key point is that grab_super() is called only for superblocks currently on ->fs_supers, so it can bump ->s_count and grab ->s_umount first, then check MS_BORN and bump ->s_active; we must never increment ->s_count for superblocks past ->kill_sb(), but grab_super() is never called for those. The bug is pretty old; we would've caught it by now, if not for accidental exclusion between sget() for block filesystems; the things like cgroup or e.g. mtd-based filesystems don't have anything of that sort, so they get bitten. The right way to deal with that is obviously to fix sget()... Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml由 Linus Torvalds 提交于
Pull UML fixes from Richard Weinberger: "Special thanks goes to Toralf Föster for continuously testing UML and reporting issues!" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: remove dead code um: siginfo cleanup uml: Fix which_tmpdir failure when /dev/shm is a symlink, and in other edge cases um: Fix wait_stub_done() error handling um: Mark stub pages mapping with VM_PFNMAP um: Fix return value of strnlen_user()
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git://git.linux-mips.org/pub/scm/ralf/upstream-linus由 Linus Torvalds 提交于
Pull MIPS fixes from Ralf Baechle: "MIPS fixes for 3.11. Half of then is for Netlogic the remainder touches things across arch/mips. Nothing really dramatic and by rc1 standards MIPS will be in fairly good shape with this applied. Tested by building all MIPS defconfigs of which with this pull request four platforms won't build. And yes, it boots also on my favorite test systems" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: kvm: Kconfig: Drop HAVE_KVM dependency from VIRTUALIZATION MIPS: Octeon: Fix DT pruning bug with pip ports MIPS: KVM: Mark KVM_GUEST (T&E KVM) as BROKEN_ON_SMP MIPS: tlbex: fix broken build in v3.11-rc1 MIPS: Netlogic: Add XLP PIC irqdomain MIPS: Netlogic: Fix USB block's coherent DMA mask MIPS: tlbex: Fix typo in r3000 tlb store handler MIPS: BMIPS: Fix thinko to release slave TP from reset MIPS: Delete dead invocation of exception_exit().
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git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64由 Linus Torvalds 提交于
Pull arm64 fixes from Catalin Marinas: - Post -rc1 update to the common reboot infrastructure. - Fixes (user cache maintenance fault handling, !COMPAT compilation, CPU online and interrupt hanlding). * tag 'arm64-stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: arm64: use common reboot infrastructure arm64: mm: don't treat user cache maintenance faults as writes arm64: add '#ifdef CONFIG_COMPAT' for aarch32_break_handler() arm64: Only enable local interrupts after the CPU is marked online
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux由 Linus Torvalds 提交于
Pull s390 fixes from Martin Schwidefsky: "An update for the BFP jit to the latest and greatest, two patches to get kdump working again, the random-abort ptrace extention for transactional execution, the z90crypt module alias for ap and a tiny cleanup" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/zcrypt: Alias for new zcrypt device driver base module s390/kdump: Allow copy_oldmem_page() copy to virtual memory s390/kdump: Disable mmap for s390 s390/bpf,jit: add pkt_type support s390/bpf,jit: address randomize and write protect jit code s390/bpf,jit: use generic jit dumper s390/bpf,jit: call module_free() from any context s390/qdio: remove unused variable s390/ptrace: PTRACE_TE_ABORT_RAND
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由 Stefan Behrens 提交于
Miao Xie reported the following issue: The filesystem was corrupted after we did a device replace. Steps to reproduce: # mkfs.btrfs -f -m single -d raid10 <device0>..<device3> # mount <device0> <mnt> # btrfs replace start -rfB 1 <device4> <mnt> # umount <mnt> # btrfsck <device4> The reason for the issue is that we changed the write offset by mistake, introduced by commit 625f1c8d. We read the data from the source device at first, and then write the data into the corresponding place of the new device. In order to implement the "-r" option, the source location is remapped using btrfs_map_block(). The read takes place on the mapped location, and the write needs to take place on the unmapped location. Currently the write is using the mapped location, and this commit changes it back by undoing the change to the write address that the aforementioned commit added by mistake. Reported-by: NMiao Xie <miaox@cn.fujitsu.com> Cc: <stable@vger.kernel.org> # 3.10+ Signed-off-by: NStefan Behrens <sbehrens@giantdisaster.de> Signed-off-by: NJosef Bacik <jbacik@fusionio.com>
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由 Josef Bacik 提交于
If we stop dropping a root for whatever reason we need to add it back to the dead root list so that we will re-start the dropping next transaction commit. The other case this happens is if we recover a drop because we will add a root without adding it to the fs radix tree, so we can leak it's root and commit root extent buffer, adding this to the dead root list makes this cleanup happen. Thanks, Cc: stable@vger.kernel.org Reported-by: NAlex Lyakas <alex.btrfs@zadarastorage.com> Signed-off-by: NJosef Bacik <jbacik@fusionio.com>
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由 Josef Bacik 提交于
We aren't setting path->locks[level] when we resume a snapshot deletion which means we won't unlock the buffer when we free the path. This causes deadlocks if we happen to re-allocate the block before we've evicted the extent buffer from cache. Thanks, Cc: stable@vger.kernel.org Reported-by: NAlex Lyakas <alex.btrfs@zadarastorage.com> Signed-off-by: NJosef Bacik <jbacik@fusionio.com>
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由 Josef Bacik 提交于
Alex pointed out a problem and fix that exists in the drop one snapshot at a time patch. If we decide we need to exit for whatever reason (umount for example) we will just exit the snapshot dropping without updating the drop progress. So the next time we go to resume we will BUG_ON() because we can't find the extent we left off at because we never updated it. This patch fixes the problem. Cc: stable@vger.kernel.org Reported-by: NAlex Lyakas <alex.btrfs@zadarastorage.com> Signed-off-by: NJosef Bacik <jbacik@fusionio.com>
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git://git.kernel.org/pub/scm/virt/kvm/kvm由 Linus Torvalds 提交于
Pull KVM fix from Paolo Bonzini: "This single patch fixes a regression caused by one of the optimizations introduced in 3.11, which is generally visible only on AMD processors" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: MMU: avoid fast page fault fixing mmio page fault
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm由 Linus Torvalds 提交于
Pull power management and ACPI fixes from Rafael Wysocki: "These are fixes collected over the last week, most importnatly two cpufreq reverts fixing regressions introduced in 3.10, an autoseelp fix preventing systems using it from crashing during shutdown and two ACPI scan fixes related to hotplug. Specifics: - Two cpufreq commits from the 3.10 cycle introduced regressions. The first of them was buggy (it did way much more than it needed to do) and the second one attempted to fix an issue introduced by the first one. Fixes from Srivatsa S Bhat revert both. - If autosleep triggers during system shutdown and the shutdown callbacks of some device drivers have been called already, it may crash the system. Fix from Liu Shuo prevents that from happening by making try_to_suspend() check system_state. - The ACPI memory hotplug driver doesn't clear its driver_data on errors which may cause a NULL poiter dereference to happen later. Fix from Toshi Kani. - The ACPI namespace scanning code should not try to attach scan handlers to device objects that have them already, which may confuse things quite a bit, and it should rescan the whole namespace branch starting at the given node after receiving a bus check notify event even if the device at that particular node has been discovered already. Fixes from Rafael J Wysocki. - New ACPI video blacklist entry for a system whose initial backlight setting from the BIOS doesn't make sense. From Lan Tianyu. - Garbage string output avoindance for ACPI PNP from Liu Shuo. - Two Kconfig fixes for issues introduced recently in the s3c24xx cpufreq driver (when moving the driver to drivers/cpufreq) from Paul Bolle. - Trivial comment fix in pm_wakeup.h from Chanwoo Choi" * tag 'pm+acpi-3.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / video: ignore BIOS initial backlight value for Fujitsu E753 PNP / ACPI: avoid garbage in resource name cpufreq: Revert commit 2f7021a8 to fix CPU hotplug regression cpufreq: s3c24xx: fix "depends on ARM_S3C24XX" in Kconfig cpufreq: s3c24xx: rename CONFIG_CPU_FREQ_S3C24XX_DEBUGFS PM / Sleep: Fix comment typo in pm_wakeup.h PM / Sleep: avoid 'autosleep' in shutdown progress cpufreq: Revert commit a66b2e to fix suspend/resume regression ACPI / memhotplug: Fix a stale pointer in error path ACPI / scan: Always call acpi_bus_scan() for bus check notifications ACPI / scan: Do not try to attach scan handlers to devices having them
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- 19 7月, 2013 15 次提交
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由 Marc Zyngier 提交于
Commit 7b6d864b (reboot: arm: change reboot_mode to use enum reboot_mode) changed the way reboot is handled on arm, which has a direct impact on arm64 as we share the reset driver on the VE platform. The obvious fix is to move arm64 to use the same infrastructure. Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> [catalin.marinas@arm.com: removed reboot_mode = REBOOT_HARD default setting] Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Will Deacon 提交于
On arm64, cache maintenance faults appear as data aborts with the CM bit set in the ESR. The WnR bit, usually used to distinguish between faulting loads and stores, always reads as 1 and (slightly confusingly) the instructions are treated as reads by the architecture. This patch fixes our fault handling code to treat cache maintenance faults in the same way as loads. Signed-off-by: NWill Deacon <will.deacon@arm.com> Cc: <stable@vger.kernel.org> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Chen Gang 提交于
If 'COMPAT' not defined, aarch32_break_handler() cannot pass compiling, and it can work independent with 'COMPAT', so remove dummy definition. The related error: arch/arm64/kernel/debug-monitors.c:249:5: error: redefinition of ‘aarch32_break_handler’ In file included from arch/arm64/kernel/debug-monitors.c:29:0: /root/linux-next/arch/arm64/include/asm/debug-monitors.h:89:12: note: previous definition of ‘aarch32_break_handler’ was here Signed-off-by: NChen Gang <gang.chen@asianux.com> Acked-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Catalin Marinas 提交于
There is a slight chance that (timer) interrupts are triggered before a secondary CPU has been marked online with implications on softirq thread affinity. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Reported-by: NKirill Tkhai <tkhai@yandex.ru>
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由 Markos Chandras 提交于
Virtualization does not always need KVM capabilities so drop the dependency. The KVM symbol already depends on HAVE_KVM. Fixes the following problem on a randconfig: warning: (REMOTEPROC && RPMSG) selects VIRTUALIZATION which has unmet direct dependencies (HAVE_KVM) warning: (REMOTEPROC && RPMSG) selects VIRTUALIZATION which has unmet direct dependencies (HAVE_KVM) Signed-off-by: NMarkos Chandras <markos.chandras@imgtec.com> Acked-by: NSteven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5443/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Richard Weinberger 提交于
"me" is not used. Signed-off-by: NRichard Weinberger <richard@nod.at>
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由 Richard Weinberger 提交于
Currently we use both struct siginfo and siginfo_t. Let's use struct siginfo internally to avoid ongoing compiler warning. We are allowed to do so because struct siginfo and siginfo_t are equivalent. Signed-off-by: NRichard Weinberger <richard@nod.at>
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由 Faidon Liambotis 提交于
During the pruning of the device tree octeon_fdt_pip_iface() is called for each PIP interface and every port up to the port count is removed from the device tree. However, the count was set to the return value of cvmx_helper_interface_enumerate() which doesn't actually return the count but just returns zero on success. This effectively removed *all* ports from the tree. Use cvmx_helper_ports_on_interface() instead to fix this. This successfully restores the 3 ports of my ERLite-3 and fixes the "kernel assigns random MAC addresses" issue. Signed-off-by: NFaidon Liambotis <paravoid@debian.org> Tested-by: NAaro Koskinen <aaro.koskinen@iki.fi> Acked-by: NDavid Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5587/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Tristan Schmelcher 提交于
which_tmpdir did the wrong thing if /dev/shm was a symlink (e.g., to /run/shm), if there were multiple mounts on top of each other, if the mount(s) were obscured by a later mount, or if /dev/shm was a prefix of another mount point. This fixes these cases. Applies to 3.9.6. Signed-off-by: NTristan Schmelcher <tschmelcher@google.com> Signed-off-by: NRichard Weinberger <richard@nod.at>
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由 Richard Weinberger 提交于
If we die within a stub handler we only way to reliable kill the (obviously) dying uml guest process is killing it's host twin on the host side. Signed-off-by: NRichard Weinberger <richard@nod.at>
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由 Richard Weinberger 提交于
Ensure that a process cannot destroy his stub pages with using MADV_DONTNEED and friends. Reported-by: toralf.foerster@gmx.de Signed-off-by: NRichard Weinberger <richard@nod.at>
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由 Richard Weinberger 提交于
In case of an error it must not return -EFAULT. Return 0 like all other archs do. Reported-by: toralf.foerster@gmx.de Signed-off-by: NRichard Weinberger <richard@nod.at>
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由 James Hogan 提交于
Make KVM_GUEST depend on BROKEN_ON_SMP so that it cannot be enabled with SMP. SMP kernels use ll/sc instructions for an atomic section in the tlb fill handler, with a tlbp instruction contained in the middle. This cannot be emulated with trap & emulate KVM because the tlbp instruction traps and the eret to return to the guest code clears the LLbit which makes the sc instruction always fail. Signed-off-by: NJames Hogan <james.hogan@imgtec.com> Cc: Sanjay Lal <sanjayl@kymasys.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/5588/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Aaro Koskinen 提交于
Commit 6ba045f9 (MIPS: Move generated code to .text for microMIPS) deleted tlbmiss_handler_setup_pgd_array, but some references were not converted. Fix that to enable building a MIPS kernel. Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi> Acked-by: NJayachandran C. <jchandra@broadcom.com> Acked-by: NDavid Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5589/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 Jayachandran C 提交于
Add a legacy irq domain for the XLP PIC interrupts. This will be used when interrupts are assigned from the device tree. This change is required after commit c5cdc67a "irqdomain: Remove temporary MIPS workaround code". Signed-off-by: NJayachandran C <jchandra@broadcom.com> Cc: linux-mips@linux-mips.org Cc: Jayachandran C <jchandra@broadcom.com> Patchwork: https://patchwork.linux-mips.org/patch/5597/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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