- 30 3月, 2012 1 次提交
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由 Bjorn Helgaas 提交于
Print physical address info in a style consistent with the %pR style used elsewhere in the kernel. Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Signed-off-by: NLen Brown <len.brown@intel.com>
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- 19 3月, 2012 2 次提交
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由 Linus Torvalds 提交于
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由 Jason Baron 提交于
Commit 28d82dc1 ("epoll: limit paths") that I did to limit the number of possible wakeup paths in epoll is causing a few applications to longer work (dovecot for one). The original patch is really about limiting the amount of epoll nesting (since epoll fds can be attached to other fds). Thus, we probably can allow an unlimited number of paths of depth 1. My current patch limits it at 1000. And enforce the limits on paths that have a greater depth. This is captured in: https://bugzilla.redhat.com/show_bug.cgi?id=681578Signed-off-by: NJason Baron <jbaron@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 18 3月, 2012 2 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net由 Linus Torvalds 提交于
Pull networking changes from David Miller: "1) icmp6_dst_alloc() returns NULL instead of ERR_PTR() leading to crashes, particularly during shutdown. Reported by Dave Jones and fixed by Eric Dumazet. 2) hyperv and wimax/i2400m return NETDEV_TX_BUSY when they have already freed the SKB, which causes crashes as to the caller this means requeue the packet. Fixes from Eric Dumazet. 3) usbnet driver doesn't allocate the right amount of headroom on fresh RX SKBs, fix from Eric Dumazet. 4) Fix regression in ip6_mc_find_dev_rcu(), as an RCU lookup it abolutely should not take a reference to 'dev', this leads to leaks. Fix from RonQing Li. 5) Fix netfilter ctnetlink race between delete and timeout expiration. From Pablo Neira Ayuso. 6) Revert SFQ change which causes regressions, specifically queueing to tail can lead to unavoidable flow starvation. From Eric Dumazet. 7) Fix a memory leak and a crash on corrupt firmware files in bnx2x, from Michal Schmidt." * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: netfilter: ctnetlink: fix race between delete and timeout expiration ipv6: Don't dev_hold(dev) in ip6_mc_find_dev_rcu. wimax/i2400m: fix erroneous NETDEV_TX_BUSY use net/hyperv: fix erroneous NETDEV_TX_BUSY use net/usbnet: reserve headroom on rx skbs bnx2x: fix memory leak in bnx2x_init_firmware() bnx2x: fix a crash on corrupt firmware file sch_sfq: revert dont put new flow at the end of flows ipv6: fix icmp6_dst_alloc()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull perf fixes from Ingo Molnar. * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf tools, x86: Build perf on older user-space as well perf tools: Use scnprintf where applicable perf tools: Incorrect use of snprintf results in SEGV
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- 17 3月, 2012 9 次提交
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由 Pablo Neira Ayuso 提交于
Kerin Millar reported hardlockups while running `conntrackd -c' in a busy firewall. That system (with several processors) was acting as backup in a primary-backup setup. After several tries, I found a race condition between the deletion operation of ctnetlink and timeout expiration. This patch fixes this problem. Tested-by: NKerin Millar <kerframil@gmail.com> Reported-by: NKerin Millar <kerframil@gmail.com> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 RongQing.Li 提交于
ip6_mc_find_dev_rcu() is called with rcu_read_lock(), so don't need to dev_hold(). With dev_hold(), not corresponding dev_put(), will lead to leak. [ bug introduced in 96b52e61 (ipv6: mcast: RCU conversions) ] Signed-off-by: NRongQing.Li <roy.qing.li@gmail.com> Acked-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Linus Torvalds 提交于
Merge some more email patches from Andrew Morton: "A couple of nilfs fixes" * emailed from Andrew Morton <akpm@linux-foundation.org>: nilfs2: fix NULL pointer dereference in nilfs_load_super_block() nilfs2: clamp ns_r_segments_percentage to [1, 99]
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由 Ryusuke Konishi 提交于
According to the report from Slicky Devil, nilfs caused kernel oops at nilfs_load_super_block function during mount after he shrank the partition without resizing the filesystem: BUG: unable to handle kernel NULL pointer dereference at 00000048 IP: [<d0d7a08e>] nilfs_load_super_block+0x17e/0x280 [nilfs2] *pde = 00000000 Oops: 0000 [#1] PREEMPT SMP ... Call Trace: [<d0d7a87b>] init_nilfs+0x4b/0x2e0 [nilfs2] [<d0d6f707>] nilfs_mount+0x447/0x5b0 [nilfs2] [<c0226636>] mount_fs+0x36/0x180 [<c023d961>] vfs_kern_mount+0x51/0xa0 [<c023ddae>] do_kern_mount+0x3e/0xe0 [<c023f189>] do_mount+0x169/0x700 [<c023fa9b>] sys_mount+0x6b/0xa0 [<c04abd1f>] sysenter_do_call+0x12/0x28 Code: 53 18 8b 43 20 89 4b 18 8b 4b 24 89 53 1c 89 43 24 89 4b 20 8b 43 20 c7 43 2c 00 00 00 00 23 75 e8 8b 50 68 89 53 28 8b 54 b3 20 <8b> 72 48 8b 7a 4c 8b 55 08 89 b3 84 00 00 00 89 bb 88 00 00 00 EIP: [<d0d7a08e>] nilfs_load_super_block+0x17e/0x280 [nilfs2] SS:ESP 0068:ca9bbdcc CR2: 0000000000000048 This turned out due to a defect in an error path which runs if the calculated location of the secondary super block was invalid. This patch fixes it and eliminates the reported oops. Reported-by: NSlicky Devil <slicky.dvl@gmail.com> Signed-off-by: NRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Tested-by: NSlicky Devil <slicky.dvl@gmail.com> Cc: <stable@vger.kernel.org> [2.6.30+] Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Haogang Chen 提交于
ns_r_segments_percentage is read from the disk. Bogus or malicious value could cause integer overflow and malfunction due to meaningless disk usage calculation. This patch reports error when mounting such bogus volumes. Signed-off-by: NHaogang Chen <haogangchen@gmail.com> Signed-off-by: NRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security由 Linus Torvalds 提交于
Pull maintainer update from James Morris: "Please pull this patch which adds Serge as maintainer of the capabilities code, as discussed on lwn and the lsm list. New capabilities must be signed off by the maintainer, and new uses of any capabilities should at be cc'd to the maintainer." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: MAINTAINERS: Add Serge as maintainer of capabilities
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git://linux-c6x.org/git/projects/linux-c6x-upstreaming由 Linus Torvalds 提交于
Pull c6x bugfix from Mark Salter: "Remove dead code from entry.S which causes a build failure when using a newer assembler (v2.22 complains about it, v2.20 ignores it)." * tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming: C6X: remove dead code from entry.S
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由 Anton Blanchard 提交于
When writing files to afs I sometimes hit a BUG: kernel BUG at fs/afs/rxrpc.c:179! With a backtrace of: afs_free_call afs_make_call afs_fs_store_data afs_vnode_store_data afs_write_back_from_locked_page afs_writepages_region afs_writepages The cause is: ASSERT(skb_queue_empty(&call->rx_queue)); Looking at a tcpdump of the session the abort happens because we are exceeding our disk quota: rx abort fs reply store-data error diskquota exceeded (32) So the abort error is valid. We hit the BUG because we haven't freed all the resources for the call. By freeing any skbs in call->rx_queue before calling afs_free_call we avoid hitting leaking memory and avoid hitting the BUG. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NDavid Howells <dhowells@redhat.com> Cc: <stable@kernel.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Anton Blanchard 提交于
A read of a large file on an afs mount failed: # cat junk.file > /dev/null cat: junk.file: Bad message Looking at the trace, call->offset wrapped since it is only an unsigned short. In afs_extract_data: _enter("{%u},{%zu},%d,,%zu", call->offset, len, last, count); ... if (call->offset < count) { if (last) { _leave(" = -EBADMSG [%d < %zu]", call->offset, count); return -EBADMSG; } Which matches the trace: [cat ] ==> afs_extract_data({65132},{524},1,,65536) [cat ] <== afs_extract_data() = -EBADMSG [0 < 65536] call->offset went from 65132 to 0. Fix this by making call->offset an unsigned int. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NDavid Howells <dhowells@redhat.com> Cc: <stable@kernel.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 16 3月, 2012 26 次提交
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由 Mark Salter 提交于
The ENDPROC() on sys_fadvise64_c6x() in arch/c6x/kernel/entry.S is outside of the conditional block with the matching ENTRY() macro. This leads a newer (v2.22 vs. v2.20) assembler to complain: /tmp/ccGZBaPT.s: Assembler messages: /tmp/ccGZBaPT.s: Error: .size expression for sys_fadvise64_c6x does not evaluate to a constant The conditional block became dead code when c6x switched to generic unistd.h and should be removed along with the offending ENDPROC(). Signed-off-by: NMark Salter <msalter@redhat.com> Acked-by: NDavid Howells <dhowells@redhat.com>
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由 Eric Dumazet 提交于
A driver start_xmit() method cannot free skb and return NETDEV_TX_BUSY, since caller is going to reuse freed skb. In fact netif_tx_stop_queue() / netif_stop_queue() is needed before returning NETDEV_TX_BUSY or you can trigger a ksoftirqd fatal loop. In case of memory allocation error, only safe way is to drop the packet and return NETDEV_TX_OK Also increments tx_dropped counter Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
A driver start_xmit() method cannot free skb and return NETDEV_TX_BUSY, since caller is going to reuse freed skb. This is mostly a revert of commit bf769375 (staging: hv: fix the return status of netvsc_start_xmit()) In fact netif_tx_stop_queue() / netif_stop_queue() is needed before returning NETDEV_TX_BUSY or you can trigger a ksoftirqd fatal loop. In case of memory allocation error, only safe way is to drop the packet and return NETDEV_TX_OK Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: NHaiyang Zhang <haiyangz@microsoft.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
network drivers should reserve some headroom on incoming skbs so that we dont need expensive reallocations, eg forwarding packets in tunnels. This NET_SKB_PAD padding is done in various helpers, like __netdev_alloc_skb_ip_align() in this patch, combining NET_SKB_PAD and NET_IP_ALIGN magic. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Cc: Oliver Neukum <oneukum@suse.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: NOliver Neukum <oneukum@suse.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Michal Schmidt 提交于
When cycling the interface down and up, bnx2x_init_firmware() knows that the firmware is already loaded, but nevertheless it allocates certain arrays anew (init_data, init_ops, init_ops_offsets, iro_arr). The old arrays are leaked. Fix the leaks by returning early if the firmware was already loaded. Because if the firmware is loaded, so are the arrays. Signed-off-by: NMichal Schmidt <mschmidt@redhat.com> Acked-by: NEilon Greenstein <eilong@broadcom.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Michal Schmidt 提交于
If the requested firmware is deemed corrupt and then released, reset the pointer to NULL in order to avoid double-freeing it in bnx2x_release_firmware() or dereferencing it in bnx2x_init_firmware(). Signed-off-by: NMichal Schmidt <mschmidt@redhat.com> Acked-by: NEilon Greenstein <eilong@broadcom.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
This reverts commit d47a0ac7 (sch_sfq: dont put new flow at the end of flows) As Jesper found out, patch sounded great but has bad side effects. In stress situation, pushing new flows in front of the queue can prevent old flows doing any progress. Packets can stay in SFQ queue for unlimited amount of time. It's possible to add heuristics to limit this problem, but this would add complexity outside of SFQ scope. A more sensible answer to Dave Taht concerns (who reported the issued I tried to solve in original commit) is probably to use a qdisc hierarchy so that high prio packets dont enter a potentially crowded SFQ qdisc. Reported-by: NJesper Dangaard Brouer <jdb@comx.dk> Cc: Dave Taht <dave.taht@gmail.com> Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
commit 87a11578 ( ipv6: Move xfrm_lookup() call down into icmp6_dst_alloc().) forgot to convert one error path, leading to crashes in mld_sendpack() Many thanks to Dave Jones for providing a very complete bug report. Reported-by: NDave Jones <davej@redhat.com> Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 James Morris 提交于
Add Serge as maintainer of capabilities, per suggestion on LWN: http://lwn.net/Articles/486306/Signed-off-by: NJames Morris <james.l.morris@oracle.com>
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由 Linus Torvalds 提交于
Merge patches from Andrew Morton: "Nine patches - some bug fixes and some MAINTAINERS fiddling." * emailed from Andrew Morton <akpm@linux-foundation.org>: drivers/video/backlight/s6e63m0.c: fix corruption storing gamma mode MAINTAINERS: add entry for exynos mipi display drivers MAINTAINERS: fix link to Gustavo Padovans tree MAINTAINERS: add Johan to Bluetooth maintainers MAINTAINERS: Gustavo has moved prctl: use CAP_SYS_RESOURCE for PR_SET_MM option rapidio/tsi721: fix bug in register offset definitions MAINTAINERS: update ST's Mailing list for SPEAr memcg: free mem_cgroup by RCU to fix oops
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git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging由 Linus Torvalds 提交于
Pull i2c subsystem fixes from Jean Delvare. * 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: i2c-algo-bit: Fix spurious SCL timeouts under heavy load i2c-core: Comment says "transmitted" but means "received"
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging由 Linus Torvalds 提交于
Pull hwmon fixes from Guenter Roeck. * tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (zl6100) Enable interval between chip accesses for all chips hwmon: (w83627ehf) Describe undocumented pwm attributes hwmon: (w83627ehf) Fix temp2 source for W83627UHG hwmon: (w83627ehf) Fix memory leak in probe function hwmon: (w83627ehf) Fix writing into fan_stop_time for NCT6775F/NCT6776F
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git://people.freedesktop.org/~airlied/linux由 Linus Torvalds 提交于
Pull drm exynos/intel updates from Dave Airlie: "Two minor updates from Jesse for Intel SNB fixes, and a few fixes from Samsung for exynos. The pull req has Alan's commit in it since Intel based their tree on my tree at that time, but it all seems fine wrt merging." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm exynos: use drm_fb_helper_set_par directly drm/exynos: Fix fb_videomode <-> drm_mode_modeinfo conversion drm/exynos: fix runtime_pm fimd device state on probe drm/exynos: use correct 'exynos-drm' name for platform device drm/i915: support 32 bit BGR formats in sprite planes drm/i915: fix color order for BGR formats on SNB drm/gma500: Fix Cedarview boot failures in 3.3-rc
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media由 Linus Torvalds 提交于
Pull media fixes from Mauro Carvalho Chehab: "For 4 fixes for 3.3 (all trivial): - uvc video driver: fixes a division by zero; - davinci: add module.h to fix compilation; - smsusb: fix the delivery system setting; - smsdvb: the get_frontend implementation there is broken. The smsdvb patch has 127 lines, but it is trivial: instead of returning a cache of the set_frontend (with is wrong, as it doesn't have the updated values for the data, and the implementation there is buggy), it copies the information of the detected DVB parameters from the smsdvb private structures into the corresponding DVBv5 struct fields." * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: [media] smsdvb: fix get_frontend [media] smsusb: fix the default delivery system setting [media] media: davinci: added module.h to resolve unresolved macros [media] [FOR,v3.3] uvcvideo: Avoid division by 0 in timestamp calculation
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git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending由 Linus Torvalds 提交于
Pull target fixes from Nicholas Bellinger: "This series addresses two recently reported regression bugs related to legacy SCSI reservation usage in target core, and iscsi-target reservation conflict handling. The second patch in particular addresses possible data-corruption with SCSI reservations that is specific to iscsi-target fabric LUNs with multiple client writers. Both patches need to go into v3.2 stable ASAP, and the branch based on the last target-pending/3.3-rc-fixes HEAD. Again, thanks to Martin Svec for his help to identify and address this regression bug with iscsi-target." * '3.3-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: iscsi-target: Fix reservation conflict -EBUSY response handling bug target: Fix compatible reservation handling (CRH=1) with legacy RESERVE/RELEASE
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由 Dan Carpenter 提交于
strict_strtoul() writes a long but ->gamma_mode only has space to store an int, so on 64 bit systems we end up scribbling over ->gamma_table_count as well. I've changed it to use kstrtouint() instead. Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com> Acked-by: NInki Dae <inki.dae@samsung.com> Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Donghwa Lee 提交于
I'd like to add Inki Dae, Donghwa Lee and Kyungmin Park as maintainers who developers for exynos mipi display drivers for video/driver/exynos/exynos_mipi* and include/video/exynos_mipi*. Signed-off-by: NDonghwa Lee <dh09.lee@samsung.com> Signed-off-by: NInki Dae <inki.dae@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Jingoo Han <jg1.han@samsung.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Johan Hedberg 提交于
Gustavo's tree is called just bluetooth.git and not bluetooth-2.6.git anymore. Signed-off-by: NJohan Hedberg <johan.hedberg@intel.com> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: "Gustavo F. Padovan" <padovan@profusion.mobi> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Johan Hedberg 提交于
I've been coordinating Bluetooth patches in my tree for some time and it's possible I'll do it in the future too, so add myself to the Bluetooth sections as well as mention my tree there. Signed-off-by: NJohan Hedberg <johan.hedberg@intel.com> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: "Gustavo F. Padovan" <padovan@profusion.mobi> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Gustavo Padovan 提交于
This is going to be the primary e-mail for kernel development. Signed-off-by: NGustavo Padovan <gustavo@padovan.org> Cc: Johan Hedberg <johan.hedberg@gmail.com> Cc: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Cyrill Gorcunov 提交于
CAP_SYS_ADMIN is already overloaded left and right, so to have more fine-grained access control use CAP_SYS_RESOURCE here. The CAP_SYS_RESOUCE is chosen because this prctl option allows a current process to adjust some fields of memory map descriptor which rather represents what the process owns: pointers to code, data, stack segments, command line, auxiliary vector data and etc. Suggested-by: NMichael Kerrisk <mtk.manpages@gmail.com> Acked-by: NKees Cook <keescook@chromium.org> Acked-by: NMichael Kerrisk <mtk.manpages@gmail.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Tejun Heo <tj@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Paul Bolle <pebolle@tiscali.nl> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: NCyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Bounine 提交于
Fix indexed register offset definitions that use decimal (wrong) instead of hexadecimal (correct) notation for indexing multipliers. Incorrect definitions do not affect Tsi721 driver in its current default configuration because it uses only IDB queue 0. Loss of inbound doorbell functionality should be observed if queue other than 0 is used. Signed-off-by: NAlexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Chul Kim <chul.kim@idt.com> Cc: <stable@vger.kernel.org> [3.2+] Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Viresh Kumar 提交于
We have created a ST's Mailing list for SPEAr. This can be accessed from non-st email ids. I want people to cc this list, when they have changes specific to SPEAr. So, its better to get this updated in MAINTAINERS file. linux-arm-kernel@lists.infradead.org is also added for SPEAr. Signed-off-by: NViresh Kumar <viresh.kumar@st.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Hugh Dickins 提交于
After fixing the GPF in mem_cgroup_lru_del_list(), three times one machine running a similar load (moving and removing memcgs while swapping) has oopsed in mem_cgroup_zone_nr_lru_pages(), when retrieving memcg zone numbers for get_scan_count() for shrink_mem_cgroup_zone(): this is where a struct mem_cgroup is first accessed after being chosen by mem_cgroup_iter(). Just what protects a struct mem_cgroup from being freed, in between mem_cgroup_iter()'s css_get_next() and its css_tryget()? css_tryget() fails once css->refcnt is zero with CSS_REMOVED set in flags, yes: but what if that memory is freed and reused for something else, which sets "refcnt" non-zero? Hmm, and scope for an indefinite freeze if refcnt is left at zero but flags are cleared. It's tempting to move the css_tryget() into css_get_next(), to make it really "get" the css, but I don't think that actually solves anything: the same difficulty in moving from css_id found to stable css remains. But we already have rcu_read_lock() around the two, so it's easily fixed if __mem_cgroup_free() just uses kfree_rcu() to free mem_cgroup. However, a big struct mem_cgroup is allocated with vzalloc() instead of kzalloc(), and we're not allowed to vfree() at interrupt time: there doesn't appear to be a general vfree_rcu() to help with this, so roll our own using schedule_work(). The compiler decently removes vfree_work() and vfree_rcu() when the config doesn't need them. Signed-off-by: NHugh Dickins <hughd@google.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: NJohannes Weiner <hannes@cmpxchg.org> Cc: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: Tejun Heo <tj@kernel.org> Cc: Ying Han <yinghan@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ville Syrjala 提交于
When the system is under heavy load, there can be a significant delay between the getscl() and time_after() calls inside sclhi(). That delay may cause the time_after() check to trigger after SCL has gone high, causing sclhi() to return -ETIMEDOUT. To fix the problem, double check that SCL is still low after the timeout has been reached, before deciding to return -ETIMEDOUT. Signed-off-by: NVille Syrjala <syrjala@sci.fi> Cc: stable@vger.kernel.org Signed-off-by: NJean Delvare <khali@linux-fr.org>
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由 Wolfram Sang 提交于
Fix that. Also convert this and the related comment to proper commenting style. Signed-off-by: NWolfram Sang <w.sang@pengutronix.de> Signed-off-by: NJean Delvare <khali@linux-fr.org>
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