As there is a dump_stack() done on memory allocation failures, these
messages might as well be deleted instead.
Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn>
Reviewed-by: David Sterba <dsterba@suse.com>
[ minor tweaks ]
Signed-off-by: David Sterba <dsterba@suse.com>
Use the helper function where it is open coded to increment the
block_group reference count As btrfs_get_block_group() is a one-liner we
could have open-coded it, but its partner function
btrfs_put_block_group() isn't one-liner which does the free part in it.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
__btrfs_return_cluster_to_free_space() returns only 0. And all its
parent functions don't need the return value either so make this a void
function.
Further, as none of the callers of btrfs_return_cluster_to_free_space()
is actually using the return from this function, make this function also
return void.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Initially when the 'removed' flag was added to a block group to avoid
races between block group removal and fitrim, by commit 04216820fe
("Btrfs: fix race between fs trimming and block group remove/allocation"),
we had to lock the chunks mutex because we could be moving the block
group from its current list, the pending chunks list, into the pinned
chunks list, or we could just be adding it to the pinned chunks if it was
not in the pending chunks list. Both lists were protected by the chunk
mutex.
However we no longer have those lists since commit 1c11b63eff
("btrfs: replace pending/pinned chunks lists with io tree"), and locking
the chunk mutex is no longer necessary because of that. The same happens
at btrfs_unfreeze_block_group(), we lock the chunk mutex because the block
group's extent map could be part of the pinned chunks list and the call
to remove_extent_mapping() could be deleting it from that list, which
used to be protected by that mutex.
So just remove those lock and unlock calls as they are not needed anymore.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
When find_first_block_group() finds a block group item in the extent-tree,
it does a lookup of the object in the extent mapping tree and does further
checks on the item.
Factor out this step from find_first_block_group() so we can further
simplify the code.
While we're at it, we can also just return early in
find_first_block_group(), if the tree slot isn't found.
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
We already have an fs_info in our function parameters, there's no need
to do the maths again and get fs_info from the extent_root just to get
the mapping_tree.
Instead directly grab the mapping_tree from fs_info.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Adresses held in 'logical' array are always guaranteed to fall within
the boundaries of the block group. That is, 'start' can never be
smaller than cache->start. This invariant follows from the way the
address are calculated in btrfs_rmap_block:
stripe_nr = physical - map->stripes[i].physical;
stripe_nr = div64_u64(stripe_nr, map->stripe_len);
bytenr = chunk_start + stripe_nr * io_stripe_size;
I.e it's always some IO stripe within the given chunk.
Exploit this invariant to simplify the body of the loop by removing the
unnecessary 'if' since its 'else' part is the one always executed.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
extent_map::orig_block_len contains the size of a physical stripe when
it's used to describe block groups (calculated in read_one_chunk via
calc_stripe_length or calculated in decide_stripe_size and then assigned
to extent_map::orig_block_len in create_chunk). Exploit this fact to get
the size directly rather than opencoding the calculations. No functional
changes.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The call to btrfs_btree_balance_dirty has been there since the early
days of BTRFS, when the btree was directly modified from the write path,
hence dirtied btree inode pages. With the implementation of b888db2bd7
("Btrfs: Add delayed allocation to the extent based page tree code")
13 years ago the btree is no longer modified from the write path, hence
there is no point in calling this function. Just remove it.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
- do not use non-portable strsep() in a host program
- fix single target builds for external modules
- change Clang's --prefix option to make it work for the latest Clang
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Merge tag 'kbuild-fixes-v5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild into master
Pull Kbuild fixes from Masahiro Yamada:
- do not use non-portable strsep() in a host program
- fix single target builds for external modules
- change Clang's --prefix option to make it work for the latest Clang
* tag 'kbuild-fixes-v5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
Makefile: Fix GCC_TOOLCHAIN_DIR prefix for Clang cross compilation
kbuild: fix single target builds for external modules
modpost: remove use of non-standard strsep() in HOSTCC code
Pull parisc fixes from Helge Deller:
"Two fixes:
- Add the cmpxchg() function for pointers to u8 values. This fixes a
kernel linking error when building the tusb1210 driver (from Liam
Beguin).
- Add a define for atomic64_set_release() to fix CPU soft lockups
which happen because of missing unlocks while processing bit
operations (from John David Anglin)"
* 'parisc-5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Add atomic64_set_release() define to avoid CPU soft lockups
parisc: add support for cmpxchg on u8 pointers
Here are a few small driver fixes for 5.8-rc7
They include:
- habanalabs fixes
- tiny fpga driver fixes
- /dev/mem fixup from previous changes
- interconnect driver fixes
- binder fix
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc into master
Pull char/misc driver fixes from Greg KH:
"Here are a few small driver fixes for 5.8-rc7
They include:
- habanalabs fixes
- tiny fpga driver fixes
- /dev/mem fixup from previous changes
- interconnect driver fixes
- binder fix
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
interconnect: msm8916: Fix buswidth of pcnoc_s nodes
interconnect: Do not skip aggregation for disabled paths
/dev/mem: Add missing memory barriers for devmem_inode
binder: Don't use mmput() from shrinker function.
habanalabs: prevent possible out-of-bounds array access
fpga: dfl: fix bug in port reset handshake
fpga: dfl: pci: reduce the scope of variable 'ret'
habanalabs: set 4s timeout for message to device CPU
habanalabs: set clock gating per engine
habanalabs: block WREG_BULK packet on PDMA
Here is a single driver core fix for 5.8-rc7. It resolves a problem
found in the previous fix for this code made in 5.8-rc6. Hopefully this
is all now cleared up, as this seems to be the last of the reported
issues in this area, and was tested on the problem hardware.
This patch has been in linux-next with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core into master
Pull driver core fix from Greg KH:
"A single driver core fix for 5.8-rc7. It resolves a problem found in
the previous fix for this code made in 5.8-rc6. Hopefully this is all
now cleared up, as this seems to be the last of the reported issues in
this area, and was tested on the problem hardware.
This patch has been in linux-next with no reported problems"
* tag 'driver-core-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
device property: Avoid NULL pointer dereference in device_get_next_child_node()
Here are 5 small staging driver fixes for 5.8-rc7 to resolve some
reported problems:
- 4 comedi driver fixes for problems found with them
- a syzbot-found fix for the wlang-ng driver that resolves a
much reported problem.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging into master
Pull staging driver fixes from Greg KH:
"Five small staging driver fixes for 5.8-rc7 to resolve some reported
problems:
- four comedi driver fixes for problems found with them
- a syzbot-found fix for the wlang-ng driver that resolves a much
reported problem.
All of these have been in linux-next with no reported issues"
* tag 'staging-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: wlan-ng: properly check endpoint types
staging: comedi: addi_apci_1564: check INSN_CONFIG_DIGITAL_TRIG shift
staging: comedi: addi_apci_1500: check INSN_CONFIG_DIGITAL_TRIG shift
staging: comedi: addi_apci_1032: check INSN_CONFIG_DIGITAL_TRIG shift
staging: comedi: ni_6527: fix INSN_CONFIG_DIGITAL_TRIG support
Here are some small tty and serial and fbcon fixes for 5.8-rc7 to
resolve some reported issues.
The fbcon fix is in here as it was simpler to take it this way (and it
was acked by the maintainer) as it was related to the vt console fix as
well, both of which resolve syzbot-found issues in the console handling
code.
The other serial driver fixes are for small issues reported in the -rc
releases.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty into master
Pull tty/serial/fbcon fixes from Greg KH:
"Here are some small tty and serial and fbcon fixes for 5.8-rc7 to
resolve some reported issues.
The fbcon fix is in here as it was simpler to take it this way (and it
was acked by the maintainer) as it was related to the vt console fix
as well, both of which resolve syzbot-found issues in the console
handling code.
The other serial driver fixes are for small issues reported in the -rc
releases.
All of these have been in linux-next with no reported issues"
* tag 'tty-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: exar: Fix GPIO configuration for Sealevel cards based on XR17V35X
fbdev: Detect integer underflow at "struct fbcon_ops"->clear_margins.
serial: 8250_mtk: Fix high-speed baud rates clamping
serial: 8250: fix null-ptr-deref in serial8250_start_tx()
serial: tegra: drop bogus NULL tty-port checks
serial: tegra: fix CREAD handling for PIO
tty: xilinx_uartps: Really fix id assignment
vt: Reject zero-sized screen buffer size.
Here are 3 small USB XHCI driver fixes for 5.8-rc7.
They all resolve some minor issues that have been reported on some
different platforms.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb into master
Pull USB fixes from Greg KH:
"Three small USB XHCI driver fixes for 5.8-rc7.
They all resolve some minor issues that have been reported on some
different platforms.
All of these have been in linux-next with no reported issues"
* tag 'usb-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: tegra: Fix allocation for the FPCI context
usb: xhci: Fix ASM2142/ASM3142 DMA addressing
usb: xhci-mtk: fix the failure of bandwidth allocation
Small core patch to fix a corner case bug: we forgot to run the queues
to handle starvation in the error exit from the scsi_queue_rq routine,
which can lead to hangs on error conditions.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi into master
Pull SCSI fix from James Bottomley:
"Small core patch to fix a corner case bug: we forgot to run the queues
to handle starvation in the error exit from the scsi_queue_rq routine,
which can lead to hangs on error conditions"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: core: Run queue in case of I/O resource contention failure
I have a few more fixes this week:
* A fix to avoid using SBI calls during kasan initialization, as the SBI calls
themselves have not been probed yet.
* Three fixes related to systems with multiple memory regions.
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Merge tag 'riscv-for-linus-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux into master
Pull RISC-V fixes from Palmer Dabbelt:
"A few more fixes this week:
- A fix to avoid using SBI calls during kasan initialization, as the
SBI calls themselves have not been probed yet.
- Three fixes related to systems with multiple memory regions"
* tag 'riscv-for-linus-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Parse all memory blocks to remove unusable memory
RISC-V: Do not rely on initrd_start/end computed during early dt parsing
RISC-V: Set maximum number of mapped pages correctly
riscv: kasan: use local_tlb_flush_all() to avoid uninitialized __sbi_rfence
- Fix a section end page alignment assumption that was causing crashes
- Fix ORC unwinding on freshly forked tasks which haven't executed yet
and which have empty user task stacks
- Fix the debug.exception-trace=1 sysctl dumping of user stacks, which
was broken by recent maccess changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master
Pull x86 fixes from Ingo Molnar:
"Misc fixes:
- Fix a section end page alignment assumption that was causing
crashes
- Fix ORC unwinding on freshly forked tasks which haven't executed
yet and which have empty user task stacks
- Fix the debug.exception-trace=1 sysctl dumping of user stacks,
which was broken by recent maccess changes"
* tag 'x86-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/dumpstack: Dump user space code correctly again
x86/stacktrace: Fix reliable check for empty user task stacks
x86/unwind/orc: Fix ORC for newly forked tasks
x86, vmlinux.lds: Page-align end of ..page_aligned sections
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'timers-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master
Pull timer fix from Ingo Molnar:
"Fix a suspend/resume regression (crash) on TI AM3/AM4 SoC's"
* tag 'timers-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource/drivers/timer-ti-dm: Fix suspend and resume for am3 and am4
debug check for a hard to debug case of bogus wakeup function flags.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master
Pull scheduler fixes from Ingo Molnar:
"Fix a race introduced by the recent loadavg race fix, plus add a debug
check for a hard to debug case of bogus wakeup function flags"
* tag 'sched-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Warn if garbage is passed to default_wake_function()
sched: Fix race against ptrace_freeze_trace()
- Fix the layering violation in the use of the EFI runtime services
availability mask in users of the 'efivars' abstraction
- Revert build fix for GCC v4.8 which is no longer supported
- Clean up some x86 EFI stub details, some of which are borderline bugs
that copy around garbage into padding fields - let's fix these
out of caution.
- Fix build issues while working on RISC-V support
- Avoid --whole-archive when linking the stub on arm64
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'efi-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master
Pull EFI fixes from Ingo Molnar:
"Various EFI fixes:
- Fix the layering violation in the use of the EFI runtime services
availability mask in users of the 'efivars' abstraction
- Revert build fix for GCC v4.8 which is no longer supported
- Clean up some x86 EFI stub details, some of which are borderline
bugs that copy around garbage into padding fields - let's fix these
out of caution.
- Fix build issues while working on RISC-V support
- Avoid --whole-archive when linking the stub on arm64"
* tag 'efi-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi: Revert "efi/x86: Fix build with gcc 4"
efi/efivars: Expose RT service availability via efivars abstraction
efi/libstub: Move the function prototypes to header file
efi/libstub: Fix gcc error around __umoddi3 for 32 bit builds
efi/libstub/arm64: link stub lib.a conditionally
efi/x86: Only copy upto the end of setup_header
efi/x86: Remove unused variables
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Merge tag '5.8-rc6-cifs-fix' of git://git.samba.org/sfrench/cifs-2.6 into master
Pull cifs fix from Steve French:
"A fix for a recently discovered regression in rename to older servers
caused by a recent patch"
* tag '5.8-rc6-cifs-fix' of git://git.samba.org/sfrench/cifs-2.6:
Revert "cifs: Fix the target file was deleted when rename failed."
Pull networking fixes from David Miller:
1) Fix RCU locaking in iwlwifi, from Johannes Berg.
2) mt76 can access uninitialized NAPI struct, from Felix Fietkau.
3) Fix race in updating pause settings in bnxt_en, from Vasundhara
Volam.
4) Propagate error return properly during unbind failures in ax88172a,
from George Kennedy.
5) Fix memleak in adf7242_probe, from Liu Jian.
6) smc_drv_probe() can leak, from Wang Hai.
7) Don't muck with the carrier state if register_netdevice() fails in
the bonding driver, from Taehee Yoo.
8) Fix memleak in dpaa_eth_probe, from Liu Jian.
9) Need to check skb_put_padto() return value in hsr_fill_tag(), from
Murali Karicheri.
10) Don't lose ionic RSS hash settings across FW update, from Shannon
Nelson.
11) Fix clobbered SKB control block in act_ct, from Wen Xu.
12) Missing newlink in "tx_timeout" sysfs output, from Xiongfeng Wang.
13) IS_UDPLITE cleanup a long time ago, incorrectly handled
transformations involving UDPLITE_RECV_CC. From Miaohe Lin.
14) Unbalanced locking in netdevsim, from Taehee Yoo.
15) Suppress false-positive error messages in qed driver, from Alexander
Lobakin.
16) Out of bounds read in ax25_connect and ax25_sendmsg, from Peilin Ye.
17) Missing SKB release in cxgb4's uld_send(), from Navid Emamdoost.
18) Uninitialized value in geneve_changelink(), from Cong Wang.
19) Fix deadlock in xen-netfront, from Andera Righi.
19) flush_backlog() frees skbs with IRQs disabled, so should use
dev_kfree_skb_irq() instead of kfree_skb(). From Subash Abhinov
Kasiviswanathan.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (111 commits)
drivers/net/wan: lapb: Corrected the usage of skb_cow
dev: Defer free of skbs in flush_backlog
qrtr: orphan socket in qrtr_release()
xen-netfront: fix potential deadlock in xennet_remove()
flow_offload: Move rhashtable inclusion to the source file
geneve: fix an uninitialized value in geneve_changelink()
bonding: check return value of register_netdevice() in bond_newlink()
tcp: allow at most one TLP probe per flight
AX.25: Prevent integer overflows in connect and sendmsg
cxgb4: add missing release on skb in uld_send()
net: atlantic: fix PTP on AQC10X
AX.25: Prevent out-of-bounds read in ax25_sendmsg()
sctp: shrink stream outq when fails to do addstream reconf
sctp: shrink stream outq only when new outcnt < old outcnt
AX.25: Fix out-of-bounds read in ax25_connect()
enetc: Remove the mdio bus on PF probe bailout
net: ethernet: ti: add NETIF_F_HW_TC hw feature flag for taprio offload
net: ethernet: ave: Fix error returns in ave_init
drivers/net/wan/x25_asy: Fix to make it work
ipvs: fix the connection sync failed in some cases
...
Currently, maximum physical memory allowed is equal to -PAGE_OFFSET.
That's why we remove any memory blocks spanning beyond that size. However,
it is done only for memblock containing linux kernel which will not work
if there are multiple memblocks.
Process all memory blocks to figure out how much memory needs to be removed
and remove at the end instead of updating the memblock list in place.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
This patch fixed 2 issues with the usage of skb_cow in LAPB drivers
"lapbether" and "hdlc_x25":
1) After skb_cow fails, kfree_skb should be called to drop a reference
to the skb. But in both drivers, kfree_skb is not called.
2) skb_cow should be called before skb_push so that is can ensure the
safety of skb_push. But in "lapbether", it is incorrectly called after
skb_push.
More details about these 2 issues:
1) The behavior of calling kfree_skb on failure is also the behavior of
netif_rx, which is called by this function with "return netif_rx(skb);".
So this function should follow this behavior, too.
2) In "lapbether", skb_cow is called after skb_push. This results in 2
logical issues:
a) skb_push is not protected by skb_cow;
b) An extra headroom of 1 byte is ensured after skb_push. This extra
headroom has no use in this function. It also has no use in the
upper-layer function that this function passes the skb to
(x25_lapb_receive_frame in net/x25/x25_dev.c).
So logically skb_cow should instead be called before skb_push.
Cc: Eric Dumazet <edumazet@google.com>
Cc: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
IRQs are disabled when freeing skbs in input queue.
Use the IRQ safe variant to free skbs here.
Fixes: 145dd5f9c8 ("net: flush the softnet backlog in process context")
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, maximum number of mapper pages are set to the pfn calculated
from the memblock size of the memblock containing kernel. This will work
until that memblock spans the entire memory. However, it will be set to
a wrong value if there are multiple memblocks defined in kernel
(e.g. with efi runtime services).
Set the the maximum value to the pfn calculated from dram size.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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Merge tag 'pci-v5.8-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci into master
Pull PCI fixes from Bjorn Helgaas:
- Reject invalid IRQ 0 command line argument for virtio_mmio because
IRQ 0 now generates warnings (Bjorn Helgaas)
- Revert "PCI/PM: Assume ports without DLL Link Active train links in
100 ms", which broke nouveau (Bjorn Helgaas)
* tag 'pci-v5.8-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
Revert "PCI/PM: Assume ports without DLL Link Active train links in 100 ms"
virtio-mmio: Reject invalid IRQ 0 command line argument
We have to detach sock from socket in qrtr_release(),
otherwise skb->sk may still reference to this socket
when the skb is released in tun->queue, particularly
sk->sk_wq still points to &sock->wq, which leads to
a UAF.
Reported-and-tested-by: syzbot+6720d64f31c081c2f708@syzkaller.appspotmail.com
Fixes: 28fb4e59a4 ("net: qrtr: Expose tunneling endpoint to user space")
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Second set of fixes for v5.8, and hopefully also the last. Three
important regressions fixed.
ath9k
* fix a regression which broke support for all ath9k usb devices
ath10k
* fix a regression which broke support for all QCA4019 AHB devices
iwlwifi
* fix a regression which broke support for some Killer Wireless-AC 1550 cards
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Merge tag 'wireless-drivers-2020-07-24' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
wireless-drivers fixes for v5.8
Second set of fixes for v5.8, and hopefully also the last. Three
important regressions fixed.
ath9k
* fix a regression which broke support for all ath9k usb devices
ath10k
* fix a regression which broke support for all QCA4019 AHB devices
iwlwifi
* fix a regression which broke support for some Killer Wireless-AC 1550 cards
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
There's a potential race in xennet_remove(); this is what the driver is
doing upon unregistering a network device:
1. state = read bus state
2. if state is not "Closed":
3. request to set state to "Closing"
4. wait for state to be set to "Closing"
5. request to set state to "Closed"
6. wait for state to be set to "Closed"
If the state changes to "Closed" immediately after step 1 we are stuck
forever in step 4, because the state will never go back from "Closed" to
"Closing".
Make sure to check also for state == "Closed" in step 4 to prevent the
deadlock.
Also add a 5 sec timeout any time we wait for the bus state to change,
to avoid getting stuck forever in wait_event().
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
/proc/fs/nfsd/client/../state at the wrong moment.
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Merge tag 'nfsd-5.8-2' of git://linux-nfs.org/~bfields/linux into master
Pull nfsd fix from Bruce Fields:
"Just one fix for a NULL dereference if someone happens to read
/proc/fs/nfsd/client/../state at the wrong moment"
* tag 'nfsd-5.8-2' of git://linux-nfs.org/~bfields/linux:
nfsd4: fix NULL dereference in nfsd/clients display code
I noticed that touching linux/rhashtable.h causes lib/vsprintf.c to
be rebuilt. This dependency came through a bogus inclusion in the
file net/flow_offload.h. This patch moves it to the right place.
This patch also removes a lingering rhashtable inclusion in cls_api
created by the same commit.
Fixes: 4e481908c5 ("flow_offload: move tc indirect block to...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Merge misc fixes from Andrew Morton:
"Subsystems affected by this patch series: mm/pagemap, mm/shmem,
mm/hotfixes, mm/memcg, mm/hugetlb, mailmap, squashfs, scripts,
io-mapping, MAINTAINERS, and gdb"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
scripts/gdb: fix lx-symbols 'gdb.error' while loading modules
MAINTAINERS: add KCOV section
io-mapping: indicate mapping failure
scripts/decode_stacktrace: strip basepath from all paths
squashfs: fix length field overlap check in metadata reading
mailmap: add entry for Mike Rapoport
khugepaged: fix null-pointer dereference due to race
mm/hugetlb: avoid hardcoding while checking if cma is enabled
mm: memcg/slab: fix memory leak at non-root kmem_cache destroy
mm/memcg: fix refcount error while moving and swapping
mm/memcontrol: fix OOPS inside mem_cgroup_get_nr_swap_pages()
mm: initialize return of vm_insert_pages
vfs/xattr: mm/shmem: kernfs: release simple xattr entry in a right way
mm/mmap.c: close race between munmap() and expand_upwards()/downwards()
Pull xtensa csum regression fix from Al Viro:
"Max Filippov caught a breakage introduced in xtensa this cycle
by the csum_and_copy_..._user() series.
Cut'n'paste from the wrong source - the check that belongs
in csum_and_copy_to_user() ended up both there and in
csum_and_copy_from_user()"
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
xtensa: fix access check in csum_and_copy_from_user
- Fix compat vDSO build flags for recent versions of clang
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux into master
Pull arm64 fix from Will Deacon:
"Fix compat vDSO build flags for recent versions of clang to tell it
where to find the assembler"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: vdso32: Fix '--prefix=' value for newer versions of clang
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Merge tag 'for-5.8-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into master
Pull btrfs fixes from David Sterba:
"A few resouce leak fixes from recent patches, all are stable material.
The problems have been observed during testing or have a reproducer"
* tag 'for-5.8-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix mount failure caused by race with umount
btrfs: fix page leaks after failure to lock page for delalloc
btrfs: qgroup: fix data leak caused by race between writeback and truncate
btrfs: fix double free on ulist after backref resolution failure
Two fixes, the first one to remove compilation warnings and the second
to avoid potentially inefficient allocation of BIOs for direct writes
into sequential zones.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
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Merge tag 'zonefs-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs into master
Pull zonefs fixes from Damien Le Moal:
"Two fixes, the first one to remove compilation warnings and the second
to avoid potentially inefficient allocation of BIOs for direct writes
into sequential zones"
* tag 'zonefs-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
zonefs: count pages after truncating the iterator
zonefs: Fix compilation warning
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Merge tag 'io_uring-5.8-2020-07-24' of git://git.kernel.dk/linux-block into master
Pull io_uring fixes from Jens Axboe:
- Fix discrepancy in how sqe->flags are treated for a few requests,
this makes it consistent (Daniele)
- Ensure that poll driven retry works with double waitqueue poll users
- Fix a missing io_req_init_async() (Pavel)
* tag 'io_uring-5.8-2020-07-24' of git://git.kernel.dk/linux-block:
io_uring: missed req_init_async() for IOSQE_ASYNC
io_uring: always allow drain/link/hardlink/async sqe flags
io_uring: ensure double poll additions work with both request types
One fix:
- Fix a NULL-ptr dereference in the QCOM IOMMU driver
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Merge tag 'iommu-fix-v5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu into master
Pull iommu fix from Joerg Roedel:
"Fix a NULL-ptr dereference in the QCOM IOMMU driver"
* tag 'iommu-fix-v5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/qcom: Use domain rather than dev as tlb cookie
One merge window regression, some corruption bugs in HNS and a few more
syzkaller fixes.
- Two long standing syzkaller races
- Fix incorrect HW configuration in HNS
- Restore accidentally dropped locking in IB CM
- Fix ODP prefetch bug added in the big rework several versions ago
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma into master
Pull rdma fixes from Jason Gunthorpe:
"One merge window regression, some corruption bugs in HNS and a few
more syzkaller fixes:
- Two long standing syzkaller races
- Fix incorrect HW configuration in HNS
- Restore accidentally dropped locking in IB CM
- Fix ODP prefetch bug added in the big rework several versions ago"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/mlx5: Prevent prefetch from racing with implicit destruction
RDMA/cm: Protect access to remote_sidr_table
RDMA/core: Fix race in rdma_alloc_commit_uobject()
RDMA/hns: Fix wrong PBL offset when VA is not aligned to PAGE_SIZE
RDMA/hns: Fix wrong assignment of lp_pktn_ini in QPC
RDMA/mlx5: Use xa_lock_irq when access to SRQ table
gets skipped when resuming a device. This is a fix for a previous
stable@ fix.
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Merge tag 'for-5.8/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm into master
Pull device mapper fix from Mike Snitzer:
"A stable fix for DM integrity target's integrity recalculation that
gets skipped when resuming a device. This is a fix for a previous
stable@ fix"
* tag 'for-5.8/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm integrity: fix integrity recalculation that is improperly skipped
Pull i2c fixes from Wolfram Sang:
"Again some driver bugfixes and some documentation fixes"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: i2c-qcom-geni: Fix DMA transfer race
i2c: rcar: always clear ICSAR to avoid side effects
MAINTAINERS: i2c: at91: handover maintenance to Codrin Ciubotariu
i2c: drop duplicated word in the header file
i2c: cadence: Clear HOLD bit at correct time in Rx path
Revert "i2c: cadence: Fix the hold bit setting"
amdgpu:
- Fix crash when overclocking VegaM
- Fix possible crash when editing dpm levels
sun4i:
- Fix inverted HPD result; fixes an earlier fix
lima:
- fix timeout during reset
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Merge tag 'drm-fixes-2020-07-24' of git://anongit.freedesktop.org/drm/drm into master
Pull drm fixes from Dave Airlie:
"Quiet fixes, I may have a single regression fix follow up to this for
nouveau, but it might be next week, Ben was testing it a bit more .
Otherwise two amdgpu fixes, one lima and one sun4i:
amdgpu:
- Fix crash when overclocking VegaM
- Fix possible crash when editing dpm levels
sun4i:
- Fix inverted HPD result; fixes an earlier fix
lima:
- fix timeout during reset"
* tag 'drm-fixes-2020-07-24' of git://anongit.freedesktop.org/drm/drm:
drm/amdgpu: Fix NULL dereference in dpm sysfs handlers
drm/amd/powerplay: fix a crash when overclocking Vega M
drm/lima: fix wait pp reset timeout
drm: sun4i: hdmi: Fix inverted HPD result
Commit ed66f991bb ("module: Refactor section attr into bin attribute")
removed the 'name' field from 'struct module_sect_attr' triggering the
following error when invoking lx-symbols:
(gdb) lx-symbols
loading vmlinux
scanning for modules in linux/build
loading @0xffffffffc014f000: linux/build/drivers/net/tun.ko
Python Exception <class 'gdb.error'> There is no member named name.:
Error occurred in Python: There is no member named name.
This patch fixes the issue taking the module name from the 'struct
attribute'.
Fixes: ed66f991bb ("module: Refactor section attr into bin attribute")
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Kieran Bingham <kbingham@kernel.org>
Link: http://lkml.kernel.org/r/20200722102239.313231-1-sgarzare@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Liao Pingfang