- 27 Feb, 2016 32 commits
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Takashi Iwai authored
commit cc85f7a6 upstream. NULL user-space buffer can be passed even in a normal path, thus it's not good to spew a kernel warning with stack trace at each time. Just drop snd_BUG_ON() macro usage there. BugLink: http://lkml.kernel.org/r/CACT4Y+YfVJ3L+q0i-4vyQVyyPD7V=OMX0PWPi29x9Bo3QaBLdw@mail.gmail.comReported-by:
Dmitry Vyukov <dvyukov@google.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
Ben Hutchings <ben@decadent.org.uk>
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Takashi Iwai authored
commit 2d1b5c08 upstream. The virmidi driver has an open race at closing its assigned rawmidi device, and this may lead to use-after-free in snd_seq_deliver_single_event(). Plug the hole by properly protecting the linked list deletion and calling in the right order in snd_virmidi_input_close(). BugLink: http://lkml.kernel.org/r/CACT4Y+Zd66+w12fNN85-425cVQT=K23kWbhnCEcMB8s3us-Frw@mail.gmail.comReported-by:
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Dan Carpenter authored
commit b1d353ad upstream. "count" is controlled by the user and it can be negative. Let's prevent that by making it unsigned. You have to have CAP_SYS_RAWIO to call this function so the bug is not as serious as it could be. Fixes: 5369c02d ('intel_scu_ipc: Utility driver for intel scu ipc') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Darren Hart <dvhart@linux.intel.com> Signed-off-by:
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Wang, Rui Y authored
commit fe097861 upstream. hash_sendmsg/sendpage() need to wait for the completion of crypto_ahash_init() otherwise it can cause panic. Signed-off-by:
Rui Wang <rui.y.wang@intel.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Matt Fleming authored
commit 74256377 upstream. There are a couple of nasty truncation bugs lurking in the pageattr code that can be triggered when mapping EFI regions, e.g. when we pass a cpa->pgd pointer. Because cpa->numpages is a 32-bit value, shifting left by PAGE_SHIFT will truncate the resultant address to 32-bits. Viorel-Cătălin managed to trigger this bug on his Dell machine that provides a ~5GB EFI region which requires 1236992 pages to be mapped. When calling populate_pud() the end of the region gets calculated incorrectly in the following buggy expression, end = start + (cpa->numpages << PAGE_SHIFT); And only 188416 pages are mapped. Next, populate_pud() gets invoked for a second time because of the loop in __change_page_attr_set_clr(), only this time no pages get mapped because shifting the remaining number of pages (1048576) by PAGE_SHIFT is zero. At which point the loop in __change_page_attr_set_clr() spins forever because we fail to map progress. Hitting this bug depends very much on the virtual address we pick to map the large region at and how many pages we map on the initial run through the loop. This explains why this issue was only recently hit with the introduction of commit a5caa209 ("x86/efi: Fix boot crash by mapping EFI memmap entries bottom-up at runtime, instead of top-down") It's interesting to note that safe uses of cpa->numpages do exist in the pageattr code. If instead of shifting ->numpages we multiply by PAGE_SIZE, no truncation occurs because PAGE_SIZE is a UL value, and so the result is unsigned long. To avoid surprises when users try to convert very large cpa->numpages values to addresses, change the data type from 'int' to 'unsigned long', thereby making it suitable for shifting by PAGE_SHIFT without any type casting. The alternative would be to make liberal use of casting, but that is far more likely to cause problems in the future when someone adds more code and fails to cast properly; this bug was difficult enough to track down in the first place. Reported-and-tested-by:
Viorel-Cătălin Răpițeanu <rapiteanu.catalin@gmail.com> Acked-by:
Borislav Petkov <bp@alien8.de> Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com> Signed-off-by:
Matt Fleming <matt@codeblueprint.co.uk> Link: https://bugzilla.kernel.org/show_bug.cgi?id=110131 Link: http://lkml.kernel.org/r/1454067370-10374-1-git-send-email-matt@codeblueprint.co.ukSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Rob Clark authored
commit 96c5d076 upstream. Signed-off-by:
Rob Clark <robdclark@gmail.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>. Signed-off-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
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Takashi Iwai authored
commit 7ee96216 upstream. ALSA dummy driver can switch the timer backend between system timer and hrtimer via its hrtimer module option. This can be also switched dynamically via sysfs, but it may lead to a memory corruption when switching is done while a PCM stream is running; the stream instance for the newly switched timer method tries to access the memory that was allocated by another timer method although the sizes differ. As the simplest fix, this patch just disables the switch via sysfs by dropping the writable bit. BugLink: http://lkml.kernel.org/r/CACT4Y+ZGEeEBntHW5WHn2GoeE0G_kRrCmUh6=dWyy-wfzvuJLg@mail.gmail.comReported-by:
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Herbert Xu authored
commit 00420a65 upstream. The has_key logic is wrong for shash algorithms as they always have a setkey function. So we should instead be testing against shash_no_setkey. Fixes: a5596d63 ("crypto: hash - Add crypto_ahash_has_setkey") Reported-by:
Stephan Mueller <smueller@chronox.de> Signed-off-by:
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Peter Hurley authored
commit 5c17c861 upstream. ioctl(TIOCGETD) retrieves the line discipline id directly from the ldisc because the line discipline id (c_line) in termios is untrustworthy; userspace may have set termios via ioctl(TCSETS*) without actually changing the line discipline via ioctl(TIOCSETD). However, directly accessing the current ldisc via tty->ldisc is unsafe; the ldisc ptr dereferenced may be stale if the line discipline is changing via ioctl(TIOCSETD) or hangup. Wait for the line discipline reference (just like read() or write()) to retrieve the "current" line discipline id. Signed-off-by:
Peter Hurley <peter@hurleysoftware.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Alan Stern authored
commit 13b43891 upstream. Runtime suspend during driver probe and removal can cause problems. The driver's runtime_suspend or runtime_resume callbacks may invoked before the driver has finished binding to the device or after the driver has unbound from the device. This problem shows up with the sd and sr drivers, and can cause disk or CD/DVD drives to become unusable as a result. The fix is simple. The drivers store a pointer to the scsi_disk or scsi_cd structure as their private device data when probing is finished, so we simply have to be sure to clear the private data during removal and test it during runtime suspend/resume. This fixes <https://bugs.debian.org/801925>. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Reported-by:
Paul Menzel <paul.menzel@giantmonkey.de> Reported-by:
Erich Schubert <erich@debian.org> Reported-by:
Alexandre Rossi <alexandre.rossi@gmail.com> Tested-by:
James Bottomley <James.Bottomley@HansenPartnership.com> [bwh: Backported to 3.2: drop changes to sr as it doesn't support runtime PM] Signed-off-by:
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Markus Trippelsdorf authored
commit d4913cbd upstream. The issue was pointed out by gcc-6's -Wmisleading-indentation. Signed-off-by:
Markus Trippelsdorf <markus@trippelsdorf.de> Acked-by:
Ingo Molnar <mingo@kernel.org> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: c97cf422 ("perf top: Live TUI Annotation") Link: http://lkml.kernel.org/r/20151214154403.GB1409@x4Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> [bwh: Backported to 3.2: adjust filename, context] Signed-off-by:
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Johannes Berg authored
commit 6736fde9 upstream. The code within wait_event_interruptible() is called with !TASK_RUNNING, so mustn't call any functions that can sleep, like mutex_lock(). Since we re-check the list_empty() in a loop after the wait, it's safe to simply use list_empty() without locking. This bug has existed forever, but was only discovered now because all userspace implementations, including the default 'rfkill' tool, use poll() or select() to get a readable fd before attempting to read. Fixes: c64fb016 ("rfkill: create useful userspace interface") Reported-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
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Michael S. Tsirkin authored
commit 2989be09 upstream. KASan detected a use-after-free error in virtio-pci remove code. In virtio_pci_remove(), vp_dev is still used after being freed in unregister_virtio_device() (in virtio_pci_release_dev() more precisely). To fix, keep a reference until cleanup is done. Fixes: 63bd62a0 ("virtio_pci: defer kfree until release callback") Reported-by:
Jerome Marchand <jmarchan@redhat.com> Cc: Sasha Levin <sasha.levin@oracle.com> Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Tested-by:
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Tejun Heo authored
commit 566d1827 upstream. Some early controllers incorrectly reported zero ports in PORTS_IMPL register and the ahci driver fabricates PORTS_IMPL from the number of ports in those cases. This hasn't mattered but with the new nvme controllers there are cases where zero PORTS_IMPL is valid and should be honored. Disable the workaround for >= AHCI 1.3. Signed-off-by:
Tejun Heo <tj@kernel.org> Reported-by:
Andy Lutomirski <luto@amacapital.net> Link: http://lkml.kernel.org/g/CALCETrU7yMvXEDhjAUShoHEhDwifJGapdw--BKxsP0jmjKGmRw@mail.gmail.com Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by:
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Sebastian Andrzej Siewior authored
commit 4ae2182b upstream. A Root Port's AER structure (rpc) contains a queue of events. aer_irq() enqueues AER status information and schedules aer_isr() to dequeue and process it. When we remove a device, aer_remove() waits for the queue to be empty, then frees the rpc struct. But aer_isr() references the rpc struct after dequeueing and possibly emptying the queue, which can cause a use-after-free error as in the following scenario with two threads, aer_isr() on the left and a concurrent aer_remove() on the right: Thread A Thread B -------- -------- aer_irq(): rpc->prod_idx++ aer_remove(): wait_event(rpc->prod_idx == rpc->cons_idx) # now blocked until queue becomes empty aer_isr(): # ... rpc->cons_idx++ # unblocked because queue is now empty ... kfree(rpc) mutex_unlock(&rpc->rpc_mutex) To prevent this problem, use flush_work() to wait until the last scheduled instance of aer_isr() has completed before freeing the rpc struct in aer_remove(). I reproduced this use-after-free by flashing a device FPGA and re-enumerating the bus to find the new device. With SLUB debug, this crashes with 0x6b bytes (POISON_FREE, the use-after-free magic number) in GPR25: pcieport 0000:00:00.0: AER: Multiple Corrected error received: id=0000 Unable to handle kernel paging request for data at address 0x27ef9e3e Workqueue: events aer_isr GPR24: dd6aa000 6b6b6b6b 605f8378 605f8360 d99b12c0 604fc674 606b1704 d99b12c0 NIP [602f5328] pci_walk_bus+0xd4/0x104 [bhelgaas: changelog, stable tag] Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Signed-off-by:
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Greg Kroah-Hartman authored
commit e03cdf22 upstream. Harald Linden reports that the ftdi_sio driver works properly for the Yaesu SCU-18 cable if the device ids are added to the driver. So let's add them. Reported-by:
Harald Linden <harald.linden@7183.org> Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Takashi Iwai authored
commit da10816e upstream. ALSA OSS sequencer spews a kernel error message ("ALSA: seq_oss: too many applications") when user-space tries to open more than the limit. This means that it can easily fill the log buffer. Since it's merely a normal error, it's safe to suppress it via pr_debug() instead. Signed-off-by:
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Takashi Iwai authored
commit 59915133 upstream. ALSA sequencer OSS emulation code has a sanity check for currently opened devices, but there is a thinko there, eventually it spews warnings and skips the operation wrongly like: WARNING: CPU: 1 PID: 7573 at sound/core/seq/oss/seq_oss_synth.c:311 Fix this off-by-one error. Reported-by:
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Daniele Palmas authored
commit ff4e2494 upstream. This patch adds support for two PIDs of LE922. Signed-off-by:
Daniele Palmas <dnlplm@gmail.com> Signed-off-by:
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Vladis Dronov authored
commit cb323213 upstream. The visor driver crashes in clie_5_attach() when a specially crafted USB device without bulk-out endpoint is detected. This fix adds a check that the device has proper configuration expected by the driver. Reported-by:
Ralf Spenneberg <ralf@spenneberg.net> Signed-off-by:
Vladis Dronov <vdronov@redhat.com> Fixes: cfb8da8f ("USB: visor: fix initialisation of UX50/TH55 devices") Signed-off-by:
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Johan Hovold authored
commit cac9b50b upstream. Fix null-pointer dereference at probe should a (malicious) Treo device lack the expected endpoints. Specifically, the Treo port-setup hack was dereferencing the bulk-in and interrupt-in urbs without first making sure they had been allocated by core. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Peter Dedecker authored
commit f487c54d upstream. Added the USB serial console device ID for IAI Corp. RCB-CV-USB USB to RS485 adaptor. Signed-off-by:
Peter Dedecker <peter.dedecker@hotmail.com> Signed-off-by:
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Marcelo Ricardo Leitner authored
commit 27f7ed2b upstream. This patch extends commit b93d6471 ("sctp: implement the sender side for SACK-IMMEDIATELY extension") as it didn't white list SCTP_SACK_IMMEDIATELY on sctp_msghdr_parse(), causing it to be understood as an invalid flag and returning -EINVAL to the application. Note that the actual handling of the flag is already there in sctp_datamsg_from_user(). https://tools.ietf.org/html/rfc7053#section-7 Fixes: b93d6471 ("sctp: implement the sender side for SACK-IMMEDIATELY extension") Signed-off-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by:
Vlad Yasevich <vyasevich@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net> [bwh: Backported to 3.2: drop the second hunk as we don't have SCTP_SNDINFO cmsg support] Signed-off-by:
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Hannes Frederic Sowa authored
commit 9a368aff upstream. Several times already this has been reported as kasan reports caused by syzkaller and trinity and people always looked at RCU races, but it is much more simple. :) In case we bind a pptp socket multiple times, we simply add it to the callid_sock list but don't remove the old binding. Thus the old socket stays in the bucket with unused call_id indexes and doesn't get cleaned up. This causes various forms of kasan reports which were hard to pinpoint. Simply don't allow multiple binds and correct error handling in pptp_bind. Also keep sk_state bits in place in pptp_connect. Fixes: 00959ade ("PPTP: PPP over IPv4 (Point-to-Point Tunneling Protocol)") Cc: Dmitry Kozlov <xeb@mail.ru> Cc: Sasha Levin <sasha.levin@oracle.com> Cc: Dmitry Vyukov <dvyukov@google.com> Reported-by:
Dave Jones <davej@codemonkey.org.uk> Signed-off-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
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Eric Dumazet authored
commit fa0dc04d upstream. Dmitry reported a struct pid leak detected by a syzkaller program. Bug happens in unix_stream_recvmsg() when we break the loop when a signal is pending, without properly releasing scm. Fixes: b3ca9b02 ("net: fix multithreaded signal handling in unix recv routines") Reported-by:
Eric Dumazet <edumazet@google.com> Cc: Rainer Weikusat <rweikusat@mobileactivedefense.com> Signed-off-by:
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Oliver Neukum authored
commit e912e685 upstream. This phone needs to be handled by a specialised firmware tool and is reported to crash irrevocably if cdc-acm takes it. Signed-off-by:
Oliver Neukum <oneukum@suse.com> Signed-off-by:
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Lu Baolu authored
commit ffdb1e36 upstream. For Intel 7260 modem, it is needed for host side to send zero packet if the BULK OUT size is equal to USB endpoint max packet length. Otherwise, modem side may still wait for more data and cannot give response to host side. Signed-off-by:
Konrad Leszczynski <konrad.leszczynski@intel.com> Signed-off-by:
Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by:
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Thomas Gleixner authored
commit 51cbb524 upstream. As Helge reported for timerfd we have the same issue in itimers. We return remaining time larger than the programmed relative time to user space in case of CONFIG_TIME_LOW_RES=y. Use the proper function to adjust the extra time added in hrtimer_start_range_ns(). Signed-off-by:
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Thomas Gleixner authored
commit 572c3917 upstream. As Helge reported for timerfd we have the same issue in posix timers. We return remaining time larger than the programmed relative time to user space in case of CONFIG_TIME_LOW_RES=y. Use the proper function to adjust the extra time added in hrtimer_start_range_ns(). Signed-off-by:
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Thomas Gleixner authored
commit b62526ed upstream. Helge reported that a relative timer can return a remaining time larger than the programmed relative time on parisc and other architectures which have CONFIG_TIME_LOW_RES set. This happens because we add a jiffie to the resulting expiry time to prevent short timeouts. Use the new function hrtimer_expires_remaining_adjusted() to calculate the remaining time. It takes that extra added time into account for relative timers. Reported-and-tested-by:
Helge Deller <deller@gmx.de> Signed-off-by:
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Thomas Gleixner authored
commit 203cbf77 upstream. If CONFIG_TIME_LOW_RES is enabled we add a jiffie to the relative timeout to prevent short sleeps, but we do not account for that in interfaces which retrieve the remaining time. Helge observed that timerfd can return a remaining time larger than the relative timeout. That's not expected and breaks userland test programs. Store the information that the timer was armed relative and provide functions to adjust the remaining time. To avoid bloating the hrtimer struct make state a u8, which as a bonus results in better code on x86 at least. Reported-and-tested-by:
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Paolo Bonzini authored
commit 920c8377 upstream. kvm_x86_ops is still NULL at this point. Since kvm_init_msr_list cannot fail, it is safe to initialize it before the call. Fixes: 93c4adc7Reported-by:
Fengguang Wu <fengguang.wu@intel.com> Tested-by:
Jet Chen <jet.chen@intel.com> Cc: kvm@vger.kernel.org Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Cc: Brad Spengler <spender@grsecurity.net> [bwh: Dependency of "KVM: x86: expose MSR_TSC_AUX to userspace", applied in 3.2.77] Signed-off-by:
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- 13 Feb, 2016 8 commits
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Ben Hutchings authored
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Vladis Dronov authored
commit fa52bd50 upstream. The usbvision driver crashes when a specially crafted usb device with invalid number of interfaces or endpoints is detected. This fix adds checks that the device has proper configuration expected by the driver. Reported-by:
Mauro Carvalho Chehab <mchehab@osg.samsung.com> [bwh: Backport to 3.2: adjust filename] Signed-off-by:
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Oliver Neukum authored
commit 588afcc1 upstream. This fixes the crash reported in: http://seclists.org/bugtraq/2015/Oct/35 The interface number needs a sanity check. Signed-off-by:
Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by:
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Alexey Khoroshilov authored
commit afd270d1 upstream. There is no usb_put_dev() on failure paths in usbvision_probe(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by:
Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by:
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Alexey Khoroshilov authored
commit 090c65b6 upstream. 1. usbvision->alt_max_pkt_size is not deallocated anywhere. 2. if allocation of usbvision->alt_max_pkt_size fails, there is no proper deallocation of already acquired resources. The patch adds kfree(usbvision->alt_max_pkt_size) to usbvision_release() as soon as other deallocations happen there. It calls usbvision_release() if allocation of usbvision->alt_max_pkt_size fails as soon as usbvision_release() is safe to work with incompletely initialized usbvision structure. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com> [bwh: Backported to 3.2: adjust filename] Signed-off-by:
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Karl Heiss authored
commit 635682a1 upstream. A case can occur when sctp_accept() is called by the user during a heartbeat timeout event after the 4-way handshake. Since sctp_assoc_migrate() changes both assoc->base.sk and assoc->ep, the bh_sock_lock in sctp_generate_heartbeat_event() will be taken with the listening socket but released with the new association socket. The result is a deadlock on any future attempts to take the listening socket lock. Note that this race can occur with other SCTP timeouts that take the bh_lock_sock() in the event sctp_accept() is called. BUG: soft lockup - CPU#9 stuck for 67s! [swapper:0] ... RIP: 0010:[<ffffffff8152d48e>] [<ffffffff8152d48e>] _spin_lock+0x1e/0x30 RSP: 0018:ffff880028323b20 EFLAGS: 00000206 RAX: 0000000000000002 RBX: ffff880028323b20 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff880028323be0 RDI: ffff8804632c4b48 RBP: ffffffff8100bb93 R08: 0000000000000000 R09: 0000000000000000 R10: ffff880610662280 R11: 0000000000000100 R12: ffff880028323aa0 R13: ffff8804383c3880 R14: ffff880028323a90 R15: ffffffff81534225 FS: 0000000000000000(0000) GS:ffff880028320000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 00000000006df528 CR3: 0000000001a85000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process swapper (pid: 0, threadinfo ffff880616b70000, task ffff880616b6cab0) Stack: ffff880028323c40 ffffffffa01c2582 ffff880614cfb020 0000000000000000 <d> 0100000000000000 00000014383a6c44 ffff8804383c3880 ffff880614e93c00 <d> ffff880614e93c00 0000000000000000 ffff8804632c4b00 ffff8804383c38b8 Call Trace: <IRQ> [<ffffffffa01c2582>] ? sctp_rcv+0x492/0xa10 [sctp] [<ffffffff8148c559>] ? nf_iterate+0x69/0xb0 [<ffffffff814974a0>] ? ip_local_deliver_finish+0x0/0x2d0 [<ffffffff8148c716>] ? nf_hook_slow+0x76/0x120 [<ffffffff814974a0>] ? ip_local_deliver_finish+0x0/0x2d0 [<ffffffff8149757d>] ? ip_local_deliver_finish+0xdd/0x2d0 [<ffffffff81497808>] ? ip_local_deliver+0x98/0xa0 [<ffffffff81496ccd>] ? ip_rcv_finish+0x12d/0x440 [<ffffffff81497255>] ? ip_rcv+0x275/0x350 [<ffffffff8145cfeb>] ? __netif_receive_skb+0x4ab/0x750 ... With lockdep debugging: ===================================== [ BUG: bad unlock balance detected! ] ------------------------------------- CslRx/12087 is trying to release lock (slock-AF_INET) at: [<ffffffffa01bcae0>] sctp_generate_timeout_event+0x40/0xe0 [sctp] but there are no more locks to release! other info that might help us debug this: 2 locks held by CslRx/12087: #0: (&asoc->timers[i]){+.-...}, at: [<ffffffff8108ce1f>] run_timer_softirq+0x16f/0x3e0 #1: (slock-AF_INET){+.-...}, at: [<ffffffffa01bcac3>] sctp_generate_timeout_event+0x23/0xe0 [sctp] Ensure the socket taken is also the same one that is released by saving a copy of the socket before entering the timeout event critical section. Signed-off-by:
Karl Heiss <kheiss@gmail.com> Signed-off-by:
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Herbert Xu authored
commit 4f0414e5 upstream. We need to load the TX SG list in sendmsg(2) after waiting for incoming data, not before. Reported-by:
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Herbert Xu authored
commit 1822793a upstream. We need to lock the child socket in skcipher_check_key as otherwise two simultaneous calls can cause the parent socket to be freed. Signed-off-by:
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