- 28 Aug, 2015 40 commits
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Dan Carpenter authored
commit 44008f08 upstream. Smatch complains that we have nested checks for "spdif_present". It turns out the current behavior isn't correct, we should remove the first check and keep the second. Fixes: 1077a024 ('ALSA: hda - Use generic parser for Cirrus codec driver') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
Kamal Mostafa <kamal@canonical.com>
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Julian Anastasov authored
commit 4754957f upstream. Michael Vallaly reports about wrong source address used in rare cases for tunneled traffic. Looks like __ip_vs_get_out_rt in 3.10+ is providing uninitialized dest_dst->dst_saddr.ip because ip_vs_dest_dst_alloc uses kmalloc. While we retry after seeing EINVAL from routing for data that does not look like valid local address, it still succeeded when this memory was previously used from other dests and with different local addresses. As result, we can use valid local address that is not suitable for our real server. Fix it by providing 0.0.0.0 every time our cache is refreshed. By this way we will get preferred source address from routing. Reported-by:
Michael Vallaly <lvs@nolatency.com> Fixes: 026ace06 ("ipvs: optimize dst usage for real server") Signed-off-by:
Julian Anastasov <ja@ssi.bg> Signed-off-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
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Joe Stringer authored
commit 4b31814d upstream. When zones were originally introduced, the expectation functions were all extended to perform lookup using the zone. However, insertion was not modified to check the zone. This means that two expectations which are intended to apply for different connections that have the same tuple but exist in different zones cannot both be tracked. Fixes: 5d0aa2cc (netfilter: nf_conntrack: add support for "conntrack zones") Signed-off-by:
Joe Stringer <joestringer@nicira.com> Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by:
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WANG Cong authored
commit 5175f710 upstream. When we share an action within a filter, the bind refcnt should increase, therefore we should not call tcf_hash_release(). Fixes: 1a29321e ("net_sched: act: Dont increment refcnt on replace") Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
Cong Wang <cwang@twopensource.com> Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Julian Anastasov authored
commit 56184858 upstream. Fix crash in 3.5+ if FTP is used after switching sync_version to 0. Fixes: 749c42b6 ("ipvs: reduce sync rate with time thresholds") Signed-off-by:
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Andy Shevchenko authored
commit 5c02a420 upstream. Since NULL is used as valid clock object on optional clocks we have to handle this case in avr32 implementation as well. Fixes: e1824dfe (net: macb: Adjust tx_clk when link speed changes) Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by:
Hans-Christian Egtvedt <egtvedt@samfundet.no> Signed-off-by:
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Alex Gartrell authored
commit 71563f34 upstream. It is possible that we bind against a local socket in early_demux when we are actually going to want to forward it. In this case, the socket serves no purpose and only serves to confuse things (particularly functions which implicitly expect sk_fullsock to be true, like ip_local_out). Additionally, skb_set_owner_w is totally broken for non full-socks. Signed-off-by:
Alex Gartrell <agartrell@fb.com> Fixes: 41063e9d ("ipv4: Early TCP socket demux.") Acked-by:
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Nikolay Aleksandrov authored
commit 7ae90a4f upstream. Since mdb states were introduced when deleting an entry the state was left as it was set in the delete request from the user which leads to the following output when doing a monitor (for example): $ bridge mdb add dev br0 port eth3 grp 239.0.0.1 permanent (monitor) dev br0 port eth3 grp 239.0.0.1 permanent $ bridge mdb del dev br0 port eth3 grp 239.0.0.1 permanent (monitor) dev br0 port eth3 grp 239.0.0.1 temp ^^^ Note the "temp" state in the delete notification which is wrong since the entry was permanent, the state in a delete is always reported as "temp" regardless of the real state of the entry. After this patch: $ bridge mdb add dev br0 port eth3 grp 239.0.0.1 permanent (monitor) dev br0 port eth3 grp 239.0.0.1 permanent $ bridge mdb del dev br0 port eth3 grp 239.0.0.1 permanent (monitor) dev br0 port eth3 grp 239.0.0.1 permanent There's one important note to make here that the state is actually not matched when doing a delete, so one can delete a permanent entry by stating "temp" in the end of the command, I've chosen this fix in order not to break user-space tools which rely on this (incorrect) behaviour. So to give an example after this patch and using the wrong state: $ bridge mdb add dev br0 port eth3 grp 239.0.0.1 permanent (monitor) dev br0 port eth3 grp 239.0.0.1 permanent $ bridge mdb del dev br0 port eth3 grp 239.0.0.1 temp (monitor) dev br0 port eth3 grp 239.0.0.1 permanent Note the state of the entry that got deleted is correct in the notification. Signed-off-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Fixes: ccb1c31a ("bridge: add flags to distinguish permanent mdb entires") Signed-off-by:
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Trond Myklebust authored
commit 85a23cee upstream. If we've ensured that the size and the change attribute are both correct, then there is no point in marking those attributes as needing revalidation again. Only do so if we know the size is incorrect and was not updated. Fixes: f2467b6f ("NFS: Clear NFS_INO_REVAL_PAGECACHE when...") Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by:
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Pablo Neira Ayuso authored
commit 95dd8653 upstream. We have to put back the references to the master conntrack and the expectation that we just created, otherwise we'll leak them. Fixes: 0ef71ee1 ("netfilter: ctnetlink: refactor ctnetlink_create_expect") Reported-by:
Tim Wiess <Tim.Wiess@watchguard.com> Signed-off-by:
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Nikolay Aleksandrov authored
commit 963ad948 upstream. Since slave_changelink support was added there have been a few race conditions when using br_setport() since some of the port functions it uses require the bridge lock. It is very easy to trigger a lockup due to some internal spin_lock() usage without bh disabled, also it's possible to get the bridge into an inconsistent state. Signed-off-by:
Jiri Pirko <jiri@resnulli.us> Signed-off-by:
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Florian Westphal authored
commit d1fe1944 upstream. commit 65ba1f1e ("inet: frags: fix a race between inet_evict_bucket and inet_frag_kill") describes the bug, but the fix doesn't work reliably. Problem is that ->flags member can be set on other cpu without chainlock being held by that task, i.e. the RMW-Cycle can clear INET_FRAG_EVICTED bit after we put the element on the evictor private list. We can crash when walking the 'private' evictor list since an element can be deleted from list underneath the evictor. Join work with Nikolay Alexandrov. Fixes: b13d3cbf ("inet: frag: move eviction of queues to work queue") Reported-by:
Johan Schuijt <johan@transip.nl> Tested-by:
Frank Schreuder <fschreuder@transip.nl> Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
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Alexander Drozdov authored
commit dbd46ab4 upstream. tpacket_fill_skb() can return a negative value (-errno) which is stored in tp_len variable. In that case the following condition will be (but shouldn't be) true: tp_len > dev->mtu + dev->hard_header_len as dev->mtu and dev->hard_header_len are both unsigned. That may lead to just returning an incorrect EMSGSIZE errno to the user. Fixes: 52f1454f ("packet: allow to transmit +4 byte in TX_RING slot for VLAN case") Signed-off-by:
Alexander Drozdov <al.drozdov@gmail.com> Acked-by:
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Andy Lutomirski authored
commit aa1acff3 upstream. The update_va_mapping hypercall can fail if the VA isn't present in the guest's page tables. Under certain loads, this can result in an OOPS when the target address is in unpopulated vmap space. While we're at it, add comments to help explain what's going on. This isn't a great long-term fix. This code should probably be changed to use something like set_memory_ro. Signed-off-by:
Andy Lutomirski <luto@kernel.org> Cc: Andrew Cooper <andrew.cooper3@citrix.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: David Vrabel <dvrabel@cantab.net> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jan Beulich <jbeulich@suse.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sasha Levin <sasha.levin@oracle.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: security@kernel.org <security@kernel.org> Cc: xen-devel <xen-devel@lists.xen.org> Link: http://lkml.kernel.org/r/0b0e55b995cda11e7829f140b833ef932fcabe3a.1438291540.git.luto@kernel.orgSigned-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
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Takashi Iwai authored
commit 649ccd08 upstream. MacBook Pro 5,2 with ALC889 codec had already a fixup entry, but this seems not working correctly, a fix for pin NID 0x15 is needed in addition. It's equivalent with the fixup for MacBook Air 1,1, so use this instead. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=102131Reported-and-tested-by:
Jeffery Miller <jefferym@gmail.com> Signed-off-by:
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Tony Battersby authored
commit 0c958ecc upstream. Fix a memory leak with scsi-mq triggered by commands with large data transfer length. __sg_alloc_table() sets both table->nents and table->orig_nents to the same value. When the scatterlist is DMA-mapped, table->nents is overwritten with the (possibly smaller) size of the DMA-mapped scatterlist, while table->orig_nents retains the original size of the allocated scatterlist. scsi_free_sgtable() should therefore check orig_nents instead of nents, and all code that initializes sdb->table without calling __sg_alloc_table() should set both nents and orig_nents. Fixes: d285203c ("scsi: add support for a blk-mq based I/O path.") Signed-off-by:
Tony Battersby <tonyb@cybernetics.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Ewan D. Milne <emilne@redhat.com> Signed-off-by:
James Bottomley <JBottomley@Odin.com> Signed-off-by:
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Brian King authored
commit 3f1c0581 upstream. Fixes another signed / unsigned array indexing bug in the ipr driver. Currently, when hrrq_index wraps, it becomes a negative number. We do the modulo, but still have a negative number, so we end up indexing backwards in the array. Given where the hrrq array is located in memory, we probably won't actually reference memory we don't own, but nonetheless ipr is still looking at data within struct ipr_ioa_cfg and interpreting it as struct ipr_hrr_queue data, so bad things could certainly happen. Each ipr adapter has anywhere from 1 to 16 HRRQs. By default, we use 2 on new adapters. Let's take an example: Assume ioa_cfg->hrrq_index=0x7fffffffe and ioa_cfg->hrrq_num=4: The atomic_add_return will then return -1. We mod this with 3 and get -2, add one and get -1 for an array index. On adapters which support more than a single HRRQ, we dedicate HRRQ to adapter initialization and error interrupts so that we can optimize the other queues for fast path I/O. So all normal I/O uses HRRQ 1-15. So we want to spread the I/O requests across those HRRQs. With the default module parameter settings, this bug won't hit, only when someone sets the ipr.number_of_msix parameter to a value larger than 3 is when bad things start to happen. Tested-by:
Wen Xiong <wenxiong@linux.vnet.ibm.com> Reviewed-by:
Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> Signed-off-by:
Brian King <brking@linux.vnet.ibm.com> Reviewed-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
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Brian King authored
commit bb7c5433 upstream. When ipr's internal driver trace was changed to an atomic, a signed/unsigned bug slipped in which results in us indexing backwards in our memory buffer writing on memory that does not belong to us. This patch fixes this by removing the modulo and instead just mask off the low bits. Tested-by:
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Brian King authored
commit 36b8e180 upstream. Make sure we have the host lock held when calling scsi_report_bus_reset. Fixes a crash seen as the __devices list in the scsi host was changing as we were iterating through it. Reviewed-by:
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Ricardo Neri authored
commit 9115c758 upstream. Even though it is documented how to specifiy efi parameters, it is possible to cause a kernel panic due to a dereference of a NULL pointer when parsing such parameters if "efi" alone is given: PANIC: early exception 0e rip 10:ffffffff812fb361 error 0 cr2 0 [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.2.0-rc1+ #450 [ 0.000000] ffffffff81fe20a9 ffffffff81e03d50 ffffffff8184bb0f 00000000000003f8 [ 0.000000] 0000000000000000 ffffffff81e03e08 ffffffff81f371a1 64656c62616e6520 [ 0.000000] 0000000000000069 000000000000005f 0000000000000000 0000000000000000 [ 0.000000] Call Trace: [ 0.000000] [<ffffffff8184bb0f>] dump_stack+0x45/0x57 [ 0.000000] [<ffffffff81f371a1>] early_idt_handler_common+0x81/0xae [ 0.000000] [<ffffffff812fb361>] ? parse_option_str+0x11/0x90 [ 0.000000] [<ffffffff81f4dd69>] arch_parse_efi_cmdline+0x15/0x42 [ 0.000000] [<ffffffff81f376e1>] do_early_param+0x50/0x8a [ 0.000000] [<ffffffff8106b1b3>] parse_args+0x1e3/0x400 [ 0.000000] [<ffffffff81f37a43>] parse_early_options+0x24/0x28 [ 0.000000] [<ffffffff81f37691>] ? loglevel+0x31/0x31 [ 0.000000] [<ffffffff81f37a78>] parse_early_param+0x31/0x3d [ 0.000000] [<ffffffff81f3ae98>] setup_arch+0x2de/0xc08 [ 0.000000] [<ffffffff8109629a>] ? vprintk_default+0x1a/0x20 [ 0.000000] [<ffffffff81f37b20>] start_kernel+0x90/0x423 [ 0.000000] [<ffffffff81f37495>] x86_64_start_reservations+0x2a/0x2c [ 0.000000] [<ffffffff81f37582>] x86_64_start_kernel+0xeb/0xef [ 0.000000] RIP 0xffffffff81ba2efc This panic is not reproducible with "efi=" as this will result in a non-NULL zero-length string. Thus, verify that the pointer to the parameter string is not NULL. This is consistent with other parameter-parsing functions which check for NULL pointers. Signed-off-by:
Ricardo Neri <ricardo.neri-calderon@linux.intel.com> Cc: Dave Young <dyoung@redhat.com> Signed-off-by:
Matt Fleming <matt.fleming@intel.com> Signed-off-by:
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Dmitry Skorodumov authored
commit 7cc03e48 upstream. The efi_info structure stores low 32 bits of memory map in efi_memmap and high 32 bits in efi_memmap_hi. While constructing pointer in the setup_e820(), need to take into account all 64 bit of the pointer. It is because on 64bit machine the function efi_get_memory_map() may return full 64bit pointer and before the patch that pointer was truncated. The issue is triggered on Parallles virtual machine and fixed with this patch. Signed-off-by:
Dmitry Skorodumov <sdmitry@parallels.com> Cc: Denis V. Lunev <den@openvz.org> Signed-off-by:
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Chris Wilson authored
commit 5eb3e5a5 upstream. The old style of memory interleaving swizzled upto the end of the first even bank of memory, and then used the remainder as unswizzled on the unpaired bank - i.e. swizzling is not constant for all memory. This causes problems when we try to migrate memory and so the kernel prevents migration at all when we detect L-shaped inconsistent swizzling. However, this issue also extends to userspace who try to manually detile into memory as the swizzling for an individual page is unknown (it depends on its physical address only known to the kernel), userspace cannot correctly swizzle. Note that this is a new attempt for the previously merged one, reverted in commit d82c0ba6 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Tue Jul 14 12:29:27 2015 +0200 Revert "drm/i915: Declare the swizzling unknown for L-shaped configurations" This is cc: stable since we need it to fix up troubles with wc cpu mmaps that userspace recently started to use widely. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91105Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> [danvet: Add note about previous (failed attempt).] Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
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Alex Deucher authored
commit 0a90a0cf upstream. Fixes a broken hsync start value uncovered by: abc0b144 (drm: Perform basic sanity checks on probed modes) The driver handled the bad hsync start elsewhere, but the above commit prevented it from getting added. bug: https://bugs.freedesktop.org/show_bug.cgi?id=91401Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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Chris Wilson authored
commit ee0a227b upstream. Since we may conceivably encounter situations where the upper part of the 64bit register changes between reads, for example when a timestamp counter overflows, change the WARN into a retry loop. Signed-off-by:
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Yao-Wen Mao authored
commit 2d1cb7f6 upstream. Add the correct dB ranges of Bose Companion 5 and Drangonfly DAC 1.2. Signed-off-by:
Yao-Wen Mao <yaowen@google.com> Signed-off-by:
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Takashi Iwai authored
commit 3a05d12f upstream. Dell Vostro 5480 (1028:069a) needs the very same quirk used for Vostro 5470 model to make bass speakers properly working. Reported-and-tested-by:
Paulo Roberto de Oliveira Castro <p.oliveira.castro@gmail.com> Signed-off-by:
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Dave Chinner authored
commit df150ed1 upstream. We don't log remote attribute contents, and instead write them synchronously before we commit the block allocation and attribute tree update transaction. As a result we are writing to the allocated space before the allcoation has been made permanent. As a result, we cannot consider this allocation to be a metadata allocation. Metadata allocation can take blocks from the free list and so reuse them before the transaction that freed the block is committed to disk. This behaviour is perfectly fine for journalled metadata changes as log recovery will ensure the free operation is replayed before the overwrite, but for remote attribute writes this is not the case. Hence we have to consider the remote attribute blocks to contain data and allocate accordingly. We do this by dropping the XFS_BMAPI_METADATA flag from the block allocation. This means the allocation will not use blocks that are on the busy list without first ensuring that the freeing transaction has been committed to disk and the blocks removed from the busy list. This ensures we will never overwrite a freed block without first ensuring that it is really free. Signed-off-by:
Dave Chinner <dchinner@redhat.com> Reviewed-by:
Brian Foster <bfoster@redhat.com> Signed-off-by:
Dave Chinner <david@fromorbit.com> Signed-off-by:
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Dave Chinner authored
commit e3c32ee9 upstream. In recent testing, a system that crashed failed log recovery on restart with a bad symlink buffer magic number: XFS (vda): Starting recovery (logdev: internal) XFS (vda): Bad symlink block magic! XFS: Assertion failed: 0, file: fs/xfs/xfs_log_recover.c, line: 2060 On examination of the log via xfs_logprint, none of the symlink buffers in the log had a bad magic number, nor were any other types of buffer log format headers mis-identified as symlink buffers. Tracing was used to find the buffer the kernel was tripping over, and xfs_db identified it's contents as: 000: 5841524d 00000000 00000346 64d82b48 8983e692 d71e4680 a5f49e2c b317576e 020: 00000000 00602038 00000000 006034ce d0020000 00000000 4d4d4d4d 4d4d4d4d 040: 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 060: 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d 4d4d4d4d ..... This is a remote attribute buffer, which are notable in that they are not logged but are instead written synchronously by the remote attribute code so that they exist on disk before the attribute transactions are committed to the journal. The above remote attribute block has an invalid LSN in it - cycle 0xd002000, block 0 - which means when log recovery comes along to determine if the transaction that writes to the underlying block should be replayed, it sees a block that has a future LSN and so does not replay the buffer data in the transaction. Instead, it validates the buffer magic number and attaches the buffer verifier to it. It is this buffer magic number check that is failing in the above assert, indicating that we skipped replay due to the LSN of the underlying buffer. The problem here is that the remote attribute buffers cannot have a valid LSN placed into them, because the transaction that contains the attribute tree pointer changes and the block allocation that the attribute data is being written to hasn't yet been committed. Hence the LSN field in the attribute block is completely unwritten, thereby leaving the underlying contents of the block in the LSN field. It could have any value, and hence a future overwrite of the block by log recovery may or may not work correctly. Fix this by always writing an invalid LSN to the remote attribute block, as any buffer in log recovery that needs to write over the remote attribute should occur. We are protected from having old data written over the attribute by the fact that freeing the block before the remote attribute is written will result in the buffer being marked stale in the log and so all changes prior to the buffer stale transaction will be cancelled by log recovery. Hence it is safe to ignore the LSN in the case or synchronously written, unlogged metadata such as remote attribute blocks, and to ensure we do that correctly, we need to write an invalid LSN to all remote attribute blocks to trigger immediate recovery of metadata that is written over the top. As a further protection for filesystems that may already have remote attribute blocks with bad LSNs on disk, change the log recovery code to always trigger immediate recovery of metadata over remote attribute blocks. Signed-off-by:
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Ard Biesheuvel authored
commit f91b1fea upstream. At boot, the UTF-16 UEFI vendor string is copied from the system table into a char array with a size of 100 bytes. However, this size of 100 bytes is also used for memremapping() the source, which may not be sufficient if the vendor string exceeds 50 UTF-16 characters, and the placement of the vendor string inside a 4 KB page happens to leave the end unmapped. So use the correct '100 * sizeof(efi_char16_t)' for the size of the mapping. Signed-off-by:
Ard Biesheuvel <ard.biesheuvel@linaro.org> Fixes: f84d0275 ("arm64: add EFI runtime services") Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
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Marc-André Lureau authored
commit 7932c0bd upstream. While reviewing vhost log code, I found out that log_file is never set. Note: I haven't tested the change (QEMU doesn't use LOG_FD yet). Signed-off-by:
Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
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Ilia Mirkin authored
commit d108142c upstream. The RING_SPACE macro accounts how much space is used up so it's important to ask it for the right amount. Incorrect accounting of this can cause page faults down the line as writes are attempted outside of the ring. Signed-off-by:
Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by:
Ben Skeggs <bskeggs@redhat.com> Signed-off-by:
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Takashi Iwai authored
commit b9d9c9ef upstream. Toshiba Satellite S50D has another model with a different PCI SSID (1179:fa93) while the previous fixup was for 1179:fa91. Adjust the fixup entry with SND_PCI_QUIRK_MASK() to match with both devices. Reported-by:
Tim Sample <timsample@gmail.com> Signed-off-by:
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Denis Carikli authored
commit e053f96b upstream. Since commit 3d42a379 ("can: flexcan: add 2nd clock to support imx53 and newer") the can driver requires a dt nodes to have a second clock. Add them to imx35 to fix probing the flex can driver on the respective platforms. Signed-off-by:
Denis Carikli <denis@eukrea.com> Signed-off-by:
Shawn Guo <shawnguo@kernel.org> Signed-off-by:
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Nicholas Bellinger authored
commit 007d038b upstream. This patch fixes a regression introduced with the following commit in v4.0-rc1 code, where an explicit iser-target logout would result in ->tx_thread_active being incorrectly cleared by the logout post handler, and subsequent TX kthread leak: commit 88dcd2da Author: Nicholas Bellinger <nab@linux-iscsi.org> Date: Thu Feb 26 22:19:15 2015 -0800 iscsi-target: Convert iscsi_thread_set usage to kthread.h To address this bug, change iscsit_logout_post_handler_closesession() and iscsit_logout_post_handler_samecid() to only cmpxchg() on ->tx_thread_active for traditional iscsi/tcp connections. This is required because iscsi/tcp connections are invoking logout post handler logic directly from TX kthread context, while iser connections are invoking logout post handler logic from a seperate workqueue context. Cc: Sagi Grimberg <sagig@mellanox.com> Signed-off-by:
Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by:
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Nicholas Bellinger authored
commit e5419865 upstream. This patch fixes a regression introduced with the following commit in v4.0-rc1 code, where a iscsit_start_kthreads() failure triggers a NULL pointer dereference OOPs: commit 88dcd2da Author: Nicholas Bellinger <nab@linux-iscsi.org> Date: Thu Feb 26 22:19:15 2015 -0800 iscsi-target: Convert iscsi_thread_set usage to kthread.h To address this bug, move iscsit_start_kthreads() immediately preceeding the transmit of last login response, before signaling a successful transition into full-feature-phase within existing iscsi_target_do_tx_login_io() logic. This ensures that no target-side resource allocation failures can occur after the final login response has been successfully sent. Also, it adds a iscsi_conn->rx_login_comp to allow the RX thread to sleep to prevent other socket related failures until the final iscsi_post_login_handler() call is able to complete. Cc: Sagi Grimberg <sagig@mellanox.com> Signed-off-by:
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Nicholas Bellinger authored
commit 88dcd2da upstream. This patch converts iscsi-target code to use modern kthread.h API callers for creating RX/TX threads for each new iscsi_conn descriptor, and releasing associated RX/TX threads during connection shutdown. This is done using iscsit_start_kthreads() -> kthread_run() to start new kthreads from within iscsi_post_login_handler(), and invoking kthread_stop() from existing iscsit_close_connection() code. Also, convert iscsit_logout_post_handler_closesession() code to use cmpxchg when determing when iscsit_cause_connection_reinstatement() needs to sleep waiting for completion. Reported-by:
Sagi Grimberg <sagig@mellanox.com> Tested-by:
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Nicholas Bellinger authored
commit 417c20a9 upstream. This patch fixes a use-after-free bug in iscsit_release_sessions_for_tpg() where se_portal_group->session_lock was incorrectly released/re-acquired while walking the active se_portal_group->tpg_sess_list. The can result in a NULL pointer dereference when iscsit_close_session() shutdown happens in the normal path asynchronously to this code, causing a bogus dereference of an already freed list entry to occur. To address this bug, walk the session list checking for the same state as before, but move entries to a local list to avoid dropping the lock while walking the active list. As before, signal using iscsi_session->session_restatement=1 for those list entries to be released locally by iscsit_free_session() code. Reported-by:
Sunilkumar Nadumuttlu <sjn@datera.io> Cc: Sunilkumar Nadumuttlu <sjn@datera.io> Signed-off-by:
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Alexei Potashnik authored
commit 7359df25 upstream. The newly introduced aborted_task TFO callback has to terminate exchange with QLogic driver, since command is being deleted and no status will be queued to the driver at a later point. This patch also moves the burden of releasing one cmd refcount to the aborted_task handler. Changed iSCSI aborted_task logic to satisfy the above requirement. Signed-off-by:
Alexei Potashnik <alexei@purestorage.com> Acked-by:
Quinn Tran <quinn.tran@qlogic.com> Signed-off-by:
Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by:
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Alexei Potashnik authored
commit e52a8b45 upstream. If a new initiator (different WWN) shows up on the same fcport, old initiator's session is scheduled for deletion. But there is a small window between it being marked with QLA_SESS_DELETION_IN_PROGRESS and qlt_unret_sess getting called when new session's commands will keep finding old session in the fcport map. This patch drops cmds/tmrs if they find session in the progress of being deleted. Signed-off-by:
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Alexei Potashnik authored
commit d20ed91b upstream. There are multiple reasons for disabling this: 1. It provides no functional benefit. We pretty much only get a few more sysfs entries for each port, but all that information is already available from /sys/kernel/debug/target/qla-session-X 2. It already only works in private-loop mode. By disabling we'll be getting more uniform behavior with fabric mode. 3. It creates complications for the new PLOGI handling mechanism: scsi_transport_fc port deletion timer could race with new session from initiator and cause logout after successful login. Signed-off-by:
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