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Use the same case as sienna_cichlid
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A bunch of fixes that came in for SPI during the merge window.
Some from ST and others for their controller, one from Lukas for a
race between device addition and controller unregistration and one
from fix from Geert for the DT bindings which unbreaks validation"
* tag 'spi-fix-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
dt-bindings: lpspi: Add missing boolean type for fsl,spi-only-use-cs1-sel
spi: stm32: always perform registers configuration prior to transfer
spi: stm32: fixes suspend/resume management
spi: stm32: fix stm32_spi_prepare_mbr in case of odd clk_rate
spi: stm32: fix fifo threshold level in case of short transfer
spi: stm32h7: fix race condition at end of transfer
spi: stm32: clear only asserted irq flags on interrupt
spi: Prevent adding devices below an unregistering controller
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io_rw_prep_async() goes through a dance of clearing req->io, calling
the iovec import, then re-setting req->io. Provide an internal helper
that does the right thing without needing state tweaked to get there.
This enables further cleanups in io_read, io_write, and
io_resubmit_prep(), but that's left for another time.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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When unloading driver by "modprobe -r amdgpu", one NULL pointer
dereference bug occurs in ras debugfs releasing. The cause is the
duplicated debugfs_remove, as drm debugfs_root dir has been cleaned
up already by drm_minor_unregister.
BUG: kernel NULL pointer dereference, address: 00000000000000a0
PGD 0 P4D 0
Oops: 0002 [#1] SMP PTI
CPU: 11 PID: 1526 Comm: modprobe Tainted: G OE 5.6.0-guchchen #1
Hardware name: System manufacturer System Product Name/TUF Z370-PLUS GAMING II, BIOS 0411 09/21/2018
RIP: 0010:down_write+0x15/0x40
Code: eb de e8 7e 17 72 ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc 0f 1f 44 00 00 53 48 89 fb e8 92
d8 ff ff 31 c0 ba 01 00 00 00 <f0> 48 0f b1 13 75 0f 65 48 8b 04 25 c0 8b 01 00 48 89 43 08 5b c3
RSP: 0018:ffffb1590386fcd0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000000000a0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff85b2fcc2 RDI: 00000000000000a0
RBP: ffffb1590386fd30 R08: ffffffff85b2fcc2 R09: 000000000002b3c0
R10: ffff97a330618c40 R11: 00000000000005f6 R12: ffff97a3481beb40
R13: 00000000000000a0 R14: ffff97a3481beb40 R15: 0000000000000000
FS: 00007fb11a717540(0000) GS:ffff97a376cc0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000a0 CR3: 00000004066d6006 CR4: 00000000003606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
simple_recursive_removal+0x63/0x370
? debugfs_remove+0x60/0x60
debugfs_remove+0x40/0x60
amdgpu_ras_fini+0x82/0x230 [amdgpu]
? __kernfs_remove.part.17+0x101/0x1f0
? kernfs_name_hash+0x12/0x80
amdgpu_device_fini+0x1c0/0x580 [amdgpu]
amdgpu_driver_unload_kms+0x3e/0x70 [amdgpu]
amdgpu_pci_remove+0x36/0x60 [amdgpu]
pci_device_remove+0x3b/0xb0
device_release_driver_internal+0xe5/0x1c0
driver_detach+0x46/0x90
bus_remove_driver+0x58/0xd0
pci_unregister_driver+0x29/0x90
amdgpu_exit+0x11/0x25 [amdgpu]
__x64_sys_delete_module+0x13d/0x210
do_syscall_64+0x5f/0x250
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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when function arcturus_get_smu_metrics_data() call failed,
it will cause the variable "throttler_status" isn't initialized before use.
warning:
powerplay/arcturus_ppt.c:2268:24: warning: ‘throttler_status’ may be used uninitialized in this function [-Wmaybe-uninitialized]
2268 | if (throttler_status & logging_label[throttler_idx].feature_mask) {
Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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gfxoff is temporarily disabled for navy_flounder,
since at present the feature has broken some basic
amdgpu test.
Signed-off-by: Jiansong Chen <Jiansong.Chen@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Every iteration of for_each_available_child_of_node() decrements
reference count of the previous node, however when control
is transferred from the middle of the loop, as in the case of
a return or break or goto, there is no decrement thus ultimately
resulting in a memory leak.
Fix a potential memory leak in gianfar.c by inserting of_node_put()
before the goto statement.
Issue found with Coccinelle.
Signed-off-by: Sumera Priyadarsini <sylphrenadin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ganji Aravind says:
====================
cxgb4: Fix ethtool selftest flits calculation
Patch 1 will fix work request size calculation for loopback selftest.
Patch 2 will fix race between loopback selftest and normal Tx handler.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Even after Tx queues are marked stopped, there exists a
small window where the current packet in the normal Tx
path is still being sent out and loopback selftest ends
up corrupting the same Tx ring. So, ensure selftest takes
the Tx lock to synchronize access the Tx ring.
Fixes: 7235ffae3d2c ("cxgb4: add loopback ethtool self-test")
Signed-off-by: Ganji Aravind <ganji.aravind@chelsio.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Work request used for sending loopback packet needs to add
the firmware work request only once. So, fix by using
correct structure size.
Fixes: 7235ffae3d2c ("cxgb4: add loopback ethtool self-test")
Signed-off-by: Ganji Aravind <ganji.aravind@chelsio.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Edward Cree says:
====================
sfc: more EF100 fixes
Fix up some bugs in the initial EF100 submission, and re-fix
the hash_valid fix which was incomplete.
The reset bugs are currently hard to trigger; they were found
with an in-progress patch adding ethtool support, whereby
ethtool --reset reliably reproduces them.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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If efx_nic_init_interrupt fails, or was never run (e.g. due to an earlier
failure in ef100_net_open), freeing irqs in efx_nic_fini_interrupt is not
needed and will cause error messages and stack traces.
So instead, only do this if efx_nic_init_interrupt successfully completed,
as indicated by the new efx->irqs_hooked flag.
Fixes: 965b549f3c20 ("sfc_ef100: implement ndo_open/close and EVQ probing")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If an ef100_net_open() fails, ef100_net_stop() may be called without
channel->rps_flow_id having been written; thus it may hold the address
freed by a previous ef100_net_stop()'s call to efx_remove_filters().
This then causes a double-free when efx_remove_filters() is called
again, leading to a panic.
To prevent this, after freeing it, overwrite it with NULL.
Fixes: a9dc3d5612ce ("sfc_ef100: RX filter table management and related gubbins")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When downing and upping the ef100 filter table, we need to take a write
lock on efx->filter_sem, not just a read lock, because we may kfree()
the table pointers.
Without this, resets cause a WARN_ON from efx_rwsem_assert_write_locked().
Fixes: a9dc3d5612ce ("sfc_ef100: RX filter table management and related gubbins")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Actually hook up the .rx_buf_hash_valid method in EF100's nic_type.
Fixes: 068885434ccb ("sfc: check hash is valid before using it")
Reported-by: Martin Habets <mhabets@solarflare.com>
Signed-off-by: Edward Cree <ecree@solarflare.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remote source MAC addresses can be set on a 'source mode' macvlan
interface via the IFLA_MACVLAN_MACADDR_DATA attribute. This commit
tightens the validation of these MAC addresses to match the validation
already performed when setting or adding a single MAC address via the
IFLA_MACVLAN_MACADDR attribute.
iproute2 uses IFLA_MACVLAN_MACADDR_DATA for its 'macvlan macaddr set'
command, and IFLA_MACVLAN_MACADDR for its 'macvlan macaddr add' command,
which demonstrates the inconsistent behaviour that this commit
addresses:
# ip link add link eth0 name macvlan0 type macvlan mode source
# ip link set link dev macvlan0 type macvlan macaddr add 01:00:00:00:00:00
RTNETLINK answers: Cannot assign requested address
# ip link set link dev macvlan0 type macvlan macaddr set 01:00:00:00:00:00
# ip -d link show macvlan0
5: macvlan0@eth0: <BROADCAST,MULTICAST,DYNAMIC,UP,LOWER_UP> mtu 1500 ...
link/ether 2e:ac:fd:2d:69:f8 brd ff:ff:ff:ff:ff:ff promiscuity 0
macvlan mode source remotes (1) 01:00:00:00:00:00 numtxqueues 1 ...
With this change, the 'set' command will (rightly) fail in the same way
as the 'add' command.
Signed-off-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull ia64 page table fix from Mike Rapoport:
"Fix regression in IA-64 caused by page table allocation refactoring
The refactoring and consolidation of <asm/pgalloc.h> caused regression
on parisc and ia64. The fix for parisc made it into v5.9-rc1 while the
fix ia64 got delayed a bit and here it is"
* tag 'fixes-2020-08-18' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
arch/ia64: Restore arch-specific pgd_offset_k implementation
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Recently we found regression when running will_it_scale/page_fault3 test
on ARM64. Over 70% down for the multi processes cases and over 20% down
for the multi threads cases. It turns out the regression is caused by
commit 89b15332af7c ("mm: drop mmap_sem before calling
balance_dirty_pages() in write fault").
The test mmaps a memory size file then write to the mapping, this would
make all memory dirty and trigger dirty pages throttle, that upstream
commit would release mmap_sem then retry the page fault. The retried
page fault would see correct PTEs installed then just fall through to
spurious TLB flush. The regression is caused by the excessive spurious
TLB flush. It is fine on x86 since x86's spurious TLB flush is no-op.
We could just skip the spurious TLB flush to mitigate the regression.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported-by: Xu Yu <xuyu@linux.alibaba.com>
Debugged-by: Xu Yu <xuyu@linux.alibaba.com>
Tested-by: Xu Yu <xuyu@linux.alibaba.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Yang Shi <shy828301@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Change to use fallthrough macro in switch case.
Signed-off-by: Shijie Luo <luoshijie1@huawei.com>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/20200810114435.24182-1-luoshijie1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The ext4_generic_delete_entry function does not use the parameter
handle, so it can be removed.
Signed-off-by: Kyoungho Koo <rnrudgh@gmail.com>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/20200810080701.GA14160@koo-Z370-HD3
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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seq_puts is a lot cheaper than seq_printf, so use that to print
literal strings.
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/20200810022158.9167-1-vulab@iscas.ac.cn
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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It might be better to adjust the code in two places:
1. Determine whether grp is currupt or not should be placed first.
2. (cr<=2 && free <ac->ac_g_ex.fe_len)should may belong to the crx
strategy, and it may be more appropriate to put it in the
subsequent switch statement block. For cr1, cr2, the conditions
in switch potentially realize the above judgment. For cr0, we
should add (free <ac->ac_g_ex.fe_len) judgment, and then delete
(free / fragments) >= ac->ac_g_ex.fe_len), because cr0 returns
true by default.
Signed-off-by: Chunguang Xu <brookxu@tencent.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/e20b2d8f-1154-adb7-3831-a9e11ba842e9@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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These comments do not seem to be related to ext4_mb_check_limits(),
it may be invalid.
Signed-off-by: Chunguang Xu <brookxu@tencent.com>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/c49faf0c-d5d5-9c51-6911-9e0ff57c6bfa@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Fix typos in ext4_mb_regular_allocator() comment
Signed-off-by: Chunguang Xu <brookxu@tencent.com>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Link: https://lore.kernel.org/r/d6514145-73b3-808b-ec5a-a8be27c51f9c@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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This reverts commit d3132792285859253c466354fd8d54d1fe0ba786.
This patch causes a regression with quite a few devices, as probing fails
because of the race where the first IRQ is dropped on the floor (after
hid_device_io_start() happens, but before the 50ms timeout passess), and
report descriptor never gets parsed and populated.
As this is just a boot time micro-optimization, let's revert the
patch for 5.9 now, and fix this properly eventually for next merge
window.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=208935
Reported-by: Johannes Hirte <johannes.hirte@datenkhaos.de>
Reported-by: Marius Zachmann <mail@mariuszachmann.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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On ppc64le we get the following warning:
In file included from btf_dump.c:16:0:
btf_dump.c: In function ‘btf_dump_emit_struct_def’:
../include/linux/kernel.h:20:17: error: comparison of distinct pointer types lacks a cast [-Werror]
(void) (&_max1 == &_max2); \
^
btf_dump.c:882:11: note: in expansion of macro ‘max’
m_sz = max(0LL, btf__resolve_size(d->btf, m->type));
^~~
Fix by explicitly casting to __s64, which is a return type from
btf__resolve_size().
Fixes: 702eddc77a90 ("libbpf: Handle GCC built-in types for Arm NEON")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200818164456.1181661-1-andriin@fb.com
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Use Shawn Guo's kernel.org address for the i.MX related bindings
as per the MAINTAINERS entries.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20200818111245.17047-1-festevam@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>
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There is a spelling mistake in a usnic_err error message. Fix it.
Link: https://lore.kernel.org/r/20200805141459.23069-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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There is a spelling mistake in a dev_dbg message. Fix it.
Link: https://lore.kernel.org/r/20200805141111.22804-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Define shutdown callback for display drm driver,
so as to disable all the CRTCS when shutdown
notification is received by the driver.
This change will turn off the timing engine so
that no display transactions are requested
while mmu translations are getting disabled
during reboot sequence.
Signed-off-by: Krishna Manikandan <mkrishn@codeaurora.org>
Changes in v2:
- Remove NULL check from msm_pdev_shutdown (Stephen Boyd)
- Change commit text to reflect when this issue
was uncovered (Sai Prakash Ranjan)
Signed-off-by: Rob Clark <robdclark@chromium.org>
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Changes from v1:
- update commit description with proper ref-accounting justification
commit db37a34c563b ("block, bfq: get a ref to a group when adding it to a service tree")
introduce leak forbfq_group and blkcg_gq objects because of get/put
imbalance.
In fact whole idea of original commit is wrong because bfq_group entity
can not dissapear under us because it is referenced by child bfq_queue's
entities from here:
-> bfq_init_entity()
->bfqg_and_blkg_get(bfqg);
->entity->parent = bfqg->my_entity
-> bfq_put_queue(bfqq)
FINAL_PUT
->bfqg_and_blkg_put(bfqq_group(bfqq))
->kmem_cache_free(bfq_pool, bfqq);
So parent entity can not disappear while child entity is in tree,
and child entities already has proper protection.
This patch revert commit db37a34c563b ("block, bfq: get a ref to a group when adding it to a service tree")
bfq_group leak trace caused by bad commit:
-> blkg_alloc
-> bfq_pq_alloc
-> bfqg_get (+1)
->bfq_activate_bfqq
->bfq_activate_requeue_entity
-> __bfq_activate_entity
->bfq_get_entity
->bfqg_and_blkg_get (+1) <==== : Note1
->bfq_del_bfqq_busy
->bfq_deactivate_entity+0x53/0xc0 [bfq]
->__bfq_deactivate_entity+0x1b8/0x210 [bfq]
-> bfq_forget_entity(is_in_service = true)
entity->on_st_or_in_serv = false <=== :Note2
if (is_in_service)
return; ==> do not touch reference
-> blkcg_css_offline
-> blkcg_destroy_blkgs
-> blkg_destroy
-> bfq_pd_offline
-> __bfq_deactivate_entity
if (!entity->on_st_or_in_serv) /* true, because (Note2)
return false;
-> bfq_pd_free
-> bfqg_put() (-1, byt bfqg->ref == 2) because of (Note2)
So bfq_group and blkcg_gq will leak forever, see test-case below.
##TESTCASE_BEGIN:
#!/bin/bash
max_iters=${1:-100}
#prep cgroup mounts
mount -t tmpfs cgroup_root /sys/fs/cgroup
mkdir /sys/fs/cgroup/blkio
mount -t cgroup -o blkio none /sys/fs/cgroup/blkio
# Prepare blkdev
grep blkio /proc/cgroups
truncate -s 1M img
losetup /dev/loop0 img
echo bfq > /sys/block/loop0/queue/scheduler
grep blkio /proc/cgroups
for ((i=0;i<max_iters;i++))
do
mkdir -p /sys/fs/cgroup/blkio/a
echo 0 > /sys/fs/cgroup/blkio/a/cgroup.procs
dd if=/dev/loop0 bs=4k count=1 of=/dev/null iflag=direct 2> /dev/null
echo 0 > /sys/fs/cgroup/blkio/cgroup.procs
rmdir /sys/fs/cgroup/blkio/a
grep blkio /proc/cgroups
done
##TESTCASE_END:
Fixes: db37a34c563b ("block, bfq: get a ref to a group when adding it to a service tree")
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: Dmitry Monakhov <dmtrmonakhov@yandex-team.ru>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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IA32_MCG_STATUS.RIPV indicates whether the return RIP value pushed onto
the stack as part of machine check delivery is valid or not.
Various drivers copied a code fragment that uses the RIPV bit to
determine the severity of the error as either HW_EVENT_ERR_UNCORRECTED
or HW_EVENT_ERR_FATAL, but this check is reversed (marking errors where
RIPV is set as "FATAL").
Reverse the tests so that the error is marked fatal when RIPV is not set.
Reported-by: Gabriele Paoloni <gabriele.paoloni@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20200707194324.14884-1-tony.luck@intel.com
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wired_cmd_repeater_auth_stream_req_in has a variable
length array at the end. we use struct_size() overflow
macro to determine the size for the allocation and sending
size.
This also fixes bug in case number of streams is > 0 in the original
submission. This bug was not triggered as the number of streams is
always one.
Fixes: c56967d674e3 (mei: hdcp: Replace one-element array with flexible-array member)
Fixes: 0a1af1b5c18d (misc/mei/hdcp: Verify M_prime)
Cc: <stable@vger.kernel.org> # v5.1+: c56967d674e3 (mei: hdcp: Replace one-element array with flexible-array member)
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20200818075406.2532605-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add the earlycon dependence and add earlycon Makefile support
to allow to build the driver.
Fixes: 699cc4dfd140 ("tty: serial: imx: add imx earlycon driver")
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Link: https://lore.kernel.org/r/20200810060652.3436-1-fugang.duan@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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In few older Samsung SoCs like s3c2410, s3c2412
and s3c2440, UART IP is having 2 interrupt lines.
However, in other SoCs like s3c6400, s5pv210,
exynos5433, and exynos4210 UART is having only 1
interrupt line. Due to this, "platform_get_irq(platdev, 1)"
call in the driver gives the following false-positive error:
"IRQ index 1 not found" on newer SoC's.
This patch adds the condition to check for Tx interrupt
only for the those SoC's which have 2 interrupt lines.
Tested-by: Alim Akhtar <alim.akhtar@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Tamseel Shams <m.shams@samsung.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200810030021.45348-1-m.shams@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
We have a number of "uart.port->desc.lock vs desc.lock->uart.port"
lockdep reports coming from 8250 driver; this causes a bit of trouble
to people, so let's fix it.
The problem is reverse lock order in two different call paths:
chain #1:
serial8250_do_startup()
spin_lock_irqsave(&port->lock);
disable_irq_nosync(port->irq);
raw_spin_lock_irqsave(&desc->lock)
chain #2:
__report_bad_irq()
raw_spin_lock_irqsave(&desc->lock)
for_each_action_of_desc()
printk()
spin_lock_irqsave(&port->lock);
Fix this by changing the order of locks in serial8250_do_startup():
do disable_irq_nosync() first, which grabs desc->lock, and grab
uart->port after that, so that chain #1 and chain #2 have same lock
order.
Full lockdep splat:
======================================================
WARNING: possible circular locking dependency detected
5.4.39 #55 Not tainted
======================================================
swapper/0/0 is trying to acquire lock:
ffffffffab65b6c0 (console_owner){-...}, at: console_lock_spinning_enable+0x31/0x57
but task is already holding lock:
ffff88810a8e34c0 (&irq_desc_lock_class){-.-.}, at: __report_bad_irq+0x5b/0xba
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&irq_desc_lock_class){-.-.}:
_raw_spin_lock_irqsave+0x61/0x8d
__irq_get_desc_lock+0x65/0x89
__disable_irq_nosync+0x3b/0x93
serial8250_do_startup+0x451/0x75c
uart_startup+0x1b4/0x2ff
uart_port_activate+0x73/0xa0
tty_port_open+0xae/0x10a
uart_open+0x1b/0x26
tty_open+0x24d/0x3a0
chrdev_open+0xd5/0x1cc
do_dentry_open+0x299/0x3c8
path_openat+0x434/0x1100
do_filp_open+0x9b/0x10a
do_sys_open+0x15f/0x3d7
kernel_init_freeable+0x157/0x1dd
kernel_init+0xe/0x105
ret_from_fork+0x27/0x50
-> #1 (&port_lock_key){-.-.}:
_raw_spin_lock_irqsave+0x61/0x8d
serial8250_console_write+0xa7/0x2a0
console_unlock+0x3b7/0x528
vprintk_emit+0x111/0x17f
printk+0x59/0x73
register_console+0x336/0x3a4
uart_add_one_port+0x51b/0x5be
serial8250_register_8250_port+0x454/0x55e
dw8250_probe+0x4dc/0x5b9
platform_drv_probe+0x67/0x8b
really_probe+0x14a/0x422
driver_probe_device+0x66/0x130
device_driver_attach+0x42/0x5b
__driver_attach+0xca/0x139
bus_for_each_dev+0x97/0xc9
bus_add_driver+0x12b/0x228
driver_register+0x64/0xed
do_one_initcall+0x20c/0x4a6
do_initcall_level+0xb5/0xc5
do_basic_setup+0x4c/0x58
kernel_init_freeable+0x13f/0x1dd
kernel_init+0xe/0x105
ret_from_fork+0x27/0x50
-> #0 (console_owner){-...}:
__lock_acquire+0x118d/0x2714
lock_acquire+0x203/0x258
console_lock_spinning_enable+0x51/0x57
console_unlock+0x25d/0x528
vprintk_emit+0x111/0x17f
printk+0x59/0x73
__report_bad_irq+0xa3/0xba
note_interrupt+0x19a/0x1d6
handle_irq_event_percpu+0x57/0x79
handle_irq_event+0x36/0x55
handle_fasteoi_irq+0xc2/0x18a
do_IRQ+0xb3/0x157
ret_from_intr+0x0/0x1d
cpuidle_enter_state+0x12f/0x1fd
cpuidle_enter+0x2e/0x3d
do_idle+0x1ce/0x2ce
cpu_startup_entry+0x1d/0x1f
start_kernel+0x406/0x46a
secondary_startup_64+0xa4/0xb0
other info that might help us debug this:
Chain exists of:
console_owner --> &port_lock_key --> &irq_desc_lock_class
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&irq_desc_lock_class);
lock(&port_lock_key);
lock(&irq_desc_lock_class);
lock(console_owner);
*** DEADLOCK ***
2 locks held by swapper/0/0:
#0: ffff88810a8e34c0 (&irq_desc_lock_class){-.-.}, at: __report_bad_irq+0x5b/0xba
#1: ffffffffab65b5c0 (console_lock){+.+.}, at: console_trylock_spinning+0x20/0x181
stack backtrace:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.39 #55
Hardware name: XXXXXX
Call Trace:
<IRQ>
dump_stack+0xbf/0x133
? print_circular_bug+0xd6/0xe9
check_noncircular+0x1b9/0x1c3
__lock_acquire+0x118d/0x2714
lock_acquire+0x203/0x258
? console_lock_spinning_enable+0x31/0x57
console_lock_spinning_enable+0x51/0x57
? console_lock_spinning_enable+0x31/0x57
console_unlock+0x25d/0x528
? console_trylock+0x18/0x4e
vprintk_emit+0x111/0x17f
? lock_acquire+0x203/0x258
printk+0x59/0x73
__report_bad_irq+0xa3/0xba
note_interrupt+0x19a/0x1d6
handle_irq_event_percpu+0x57/0x79
handle_irq_event+0x36/0x55
handle_fasteoi_irq+0xc2/0x18a
do_IRQ+0xb3/0x157
common_interrupt+0xf/0xf
</IRQ>
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Fixes: 768aec0b5bcc ("serial: 8250: fix shared interrupts issues with SMP and RT kernels")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Reported-by: Raul Rangel <rrangel@google.com>
BugLink: https://bugs.chromium.org/p/chromium/issues/detail?id=1114800
Link: https://lore.kernel.org/lkml/CAHQZ30BnfX+gxjPm1DUd5psOTqbyDh4EJE=2=VAMW_VDafctkA@mail.gmail.com/T/#u
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200817022646.1484638-1-sergey.senozhatsky@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
stm32_init_port() of the stm32-usart may trigger a warning in
platform_get_irq() when the device tree specifies no wakeup interrupt.
The wakeup interrupt is usually a board-specific GPIO and the driver
functions correctly in its absence. The mainline stm32mp151.dtsi does
not specify it, so all mainline device trees trigger an unnecessary
kernel warning. Use of platform_get_irq_optional() avoids this.
Fixes: 2c58e56096dd ("serial: stm32: fix the get_irq error case")
Signed-off-by: Holger Assmann <h.assmann@pengutronix.de>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200813152757.32751-1-h.assmann@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
If probing of a pl011 gets deferred until after free_initmem(), an oops
ensues because pl011_console_match() is called which has been freed.
Fix by removing the __init attribute from the function and those it
calls.
Commit 10879ae5f12e ("serial: pl011: add console matching function")
introduced pl011_console_match() not just for early consoles but
regular preferred consoles, such as those added by acpi_parse_spcr().
Regular consoles may be registered after free_initmem() for various
reasons, one being deferred probing, another being dynamic enablement
of serial ports using a DeviceTree overlay.
Thus, pl011_console_match() must not be declared __init and the
functions it calls mustn't either.
Stack trace for posterity:
Unable to handle kernel paging request at virtual address 80c38b58
Internal error: Oops: 8000000d [#1] PREEMPT SMP ARM
PC is at pl011_console_match+0x0/0xfc
LR is at register_console+0x150/0x468
[<80187004>] (register_console)
[<805a8184>] (uart_add_one_port)
[<805b2b68>] (pl011_register_port)
[<805b3ce4>] (pl011_probe)
[<80569214>] (amba_probe)
[<805ca088>] (really_probe)
[<805ca2ec>] (driver_probe_device)
[<805ca5b0>] (__device_attach_driver)
[<805c8060>] (bus_for_each_drv)
[<805c9dfc>] (__device_attach)
[<805ca630>] (device_initial_probe)
[<805c90a8>] (bus_probe_device)
[<805c95a8>] (deferred_probe_work_func)
Fixes: 10879ae5f12e ("serial: pl011: add console matching function")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org # v4.10+
Cc: Aleksey Makarov <amakarov@marvell.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Christopher Covington <cov@codeaurora.org>
Link: https://lore.kernel.org/r/f827ff09da55b8c57d316a1b008a137677b58921.1597315557.git.lukas@wunner.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
pl011_probe() calls pl011_setup_port() to reserve an amba_ports[] entry,
then calls pl011_register_port() to register the uart driver with the
tty layer.
If registration of the uart driver fails, the amba_ports[] entry is not
released. If this happens 14 times (value of UART_NR macro), then all
amba_ports[] entries will have been leaked and driver probing is no
longer possible. (To be fair, that can only happen if the DeviceTree
doesn't contain alias IDs since they cause the same entry to be used for
a given port.) Fix it.
Fixes: ef2889f7ffee ("serial: pl011: Move uart_register_driver call to device")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org # v3.15+
Cc: Tushar Behera <tushar.behera@linaro.org>
Link: https://lore.kernel.org/r/138f8c15afb2f184d8102583f8301575566064a6.1597316167.git.lukas@wunner.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
The following in 8250_exar.c line 589 is used to determine the number
of ports for each Exar board:
nr_ports = board->num_ports ? board->num_ports : pcidev->device & 0x0f;
If the number of ports a card has is not explicitly specified, it defaults
to the rightmost 4 bits of the PCI device ID. This is prone to error since
not all PCI device IDs contain a number which corresponds to the number of
ports that card provides.
This particular case involves COMMTECH_4222PCIE, COMMTECH_4224PCIE and
COMMTECH_4228PCIE cards with device IDs 0x0022, 0x0020 and 0x0021.
Currently the multiport cards receive 2, 0 and 1 port instead of 2, 4 and
8 ports respectively.
To fix this, each Commtech Fastcom PCIe card is given a struct where the
number of ports is explicitly specified. This ensures 'board->num_ports'
is used instead of the default 'pcidev->device & 0x0f'.
Fixes: d0aeaa83f0b0 ("serial: exar: split out the exar code from 8250_pci")
Signed-off-by: Valmer Huhn <valmer.huhn@concurrent-rt.com>
Tested-by: Valmer Huhn <valmer.huhn@concurrent-rt.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200813165255.GC345440@icarus.concurrent-rt.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
When booting with heavily modularized config, the serial console
may not be able to load until after init when modules that
satisfy needed dependencies have time to load.
Unfortunately, as qcom_geni_console_setup is marked as __init,
the function may have been freed before we get to run it,
causing boot time crashes such as:
[ 6.469057] Unable to handle kernel paging request at virtual address ffffffe645d4e6cc
[ 6.481623] Mem abort info:
[ 6.484466] ESR = 0x86000007
[ 6.487557] EC = 0x21: IABT (current EL), IL = 32 bits
[ 6.492929] SET = 0, FnV = 0g
[ 6.496016] EA = 0, S1PTW = 0
[ 6.499202] swapper pgtable: 4k pages, 39-bit VAs, pgdp=000000008151e000
[ 6.501286] ufshcd-qcom 1d84000.ufshc: ufshcd_print_pwr_info:[RX, TX]: gear=[3, 3], lane[2, 2], pwr[FAST MODE, FAST MODE], rate = 2
[ 6.505977] [ffffffe645d4e6cc] pgd=000000017df9f003, p4d=000000017df9f003, pud=000000017df9f003, pmd=000000017df9c003, pte=0000000000000000
[ 6.505990] Internal error: Oops: 86000007 [#1] PREEMPT SMP
[ 6.505995] Modules linked in: zl10353 zl10039 zl10036 zd1301_demod xc5000 xc4000 ves1x93 ves1820 tuner_xc2028 tuner_simple tuner_types tua9001 tua6100 1
[ 6.506152] isl6405
[ 6.518104] ufshcd-qcom 1d84000.ufshc: ufshcd_find_max_sup_active_icc_level: Regulator capability was not set, actvIccLevel=0
[ 6.530549] horus3a helene fc2580 fc0013 fc0012 fc0011 ec100 e4000 dvb_pll ds3000 drxk drxd drx39xyj dib9000 dib8000 dib7000p dib7000m dib3000mc dibx003
[ 6.624271] CPU: 7 PID: 148 Comm: kworker/7:2 Tainted: G W 5.8.0-mainline-12021-g6defd37ba1cd #3455
[ 6.624273] Hardware name: Thundercomm Dragonboard 845c (DT)
[ 6.624290] Workqueue: events deferred_probe_work_func
[ 6.624296] pstate: 40c00005 (nZcv daif +PAN +UAO BTYPE=--)
[ 6.624307] pc : qcom_geni_console_setup+0x0/0x110
[ 6.624316] lr : try_enable_new_console+0xa0/0x140
[ 6.624318] sp : ffffffc010843a30
[ 6.624320] x29: ffffffc010843a30 x28: ffffffe645c3e7d0
[ 6.624325] x27: ffffff80f8022180 x26: ffffffc010843b28
[ 6.637937] x25: 0000000000000000 x24: ffffffe6462a2000
[ 6.637941] x23: ffffffe646398000 x22: 0000000000000000
[ 6.637945] x21: 0000000000000000 x20: ffffffe6462a5ce8
[ 6.637952] x19: ffffffe646398e38 x18: ffffffffffffffff
[ 6.680296] x17: 0000000000000000 x16: ffffffe64492b900
[ 6.680300] x15: ffffffe6461e9d08 x14: 69202930203d2064
[ 6.680305] x13: 7561625f65736162 x12: 202c363331203d20
[ 6.696434] x11: 0000000000000030 x10: 0101010101010101
[ 6.696438] x9 : 4d4d20746120304d x8 : 7f7f7f7f7f7f7f7f
[ 6.707249] x7 : feff4c524c787373 x6 : 0000000000008080
[ 6.707253] x5 : 0000000000000000 x4 : 8080000000000000
[ 6.707257] x3 : 0000000000000000 x2 : ffffffe645d4e6cc
[ 6.744223] qcom_geni_serial 898000.serial: dev_pm_opp_set_rate: failed to find OPP for freq 102400000 (-34)
[ 6.744966] x1 : fffffffefe74e174 x0 : ffffffe6462a5ce8
[ 6.753580] qcom_geni_serial 898000.serial: dev_pm_opp_set_rate: failed to find OPP for freq 102400000 (-34)
[ 6.761634] Call trace:
[ 6.761639] qcom_geni_console_setup+0x0/0x110
[ 6.761645] register_console+0x29c/0x2f8
[ 6.767981] Bluetooth: hci0: Frame reassembly failed (-84)
[ 6.775252] uart_add_one_port+0x438/0x500
[ 6.775258] qcom_geni_serial_probe+0x2c4/0x4a8
[ 6.775266] platform_drv_probe+0x58/0xa8
[ 6.855359] really_probe+0xec/0x398
[ 6.855362] driver_probe_device+0x5c/0xb8
[ 6.855367] __device_attach_driver+0x98/0xb8
[ 7.184945] bus_for_each_drv+0x74/0xd8
[ 7.188825] __device_attach+0xec/0x148
[ 7.192705] device_initial_probe+0x24/0x30
[ 7.196937] bus_probe_device+0x9c/0xa8
[ 7.200816] deferred_probe_work_func+0x7c/0xb8
[ 7.205398] process_one_work+0x20c/0x4b0
[ 7.209456] worker_thread+0x48/0x460
[ 7.213157] kthread+0x14c/0x158
[ 7.216432] ret_from_fork+0x10/0x18
[ 7.220049] Code: bad PC value
[ 7.223139] ---[ end trace 73f3b21e251d5a70 ]---
Thus this patch removes the __init avoiding crash in such
configs.
Cc: Andy Gross <agross@kernel.org>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Todd Kjos <tkjos@google.com>
Cc: Amit Pundir <amit.pundir@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-serial@vger.kernel.org
Suggested-by: Saravana Kannan <saravanak@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200811025044.70626-1-john.stultz@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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The commit e42d6c3ec0c7 ("serial: qcom_geni_serial: Make kgdb work
even if UART isn't console") worked pretty well and I've been doing a
lot of debugging with it. However, recently I typed "dmesg" in kdb
and then held the space key down to scroll through the pagination. My
device hung. This was repeatable and I found that it was introduced
with the aforementioned commit.
It turns out that there are some strange boundary cases in geni where
in some weird situations it will signal RX_LAST but then will put 0 in
RX_LAST_BYTE. This means that the entire last FIFO entry is valid.
This weird corner case is handled in qcom_geni_serial_handle_rx()
where you can see that we only honor RX_LAST_BYTE if RX_LAST is set
_and_ RX_LAST_BYTE is non-zero. If either of these is not true we use
BYTES_PER_FIFO_WORD (4) for the size of the last FIFO word.
Let's fix kgdb. While at it, also use the proper #define for 4.
Fixes: e42d6c3ec0c7 ("serial: qcom_geni_serial: Make kgdb work even if UART isn't console")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Akash Asthana <akashast@codeaurora.org>
Link: https://lore.kernel.org/r/20200806221904.1.I4455ff86f0ef5281c2a0cd0a4712db614548a5ca@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
vc_resize() can return with an error after failure. Change VT_RESIZEX ioctl
to save struct vc_data values that are modified and restore the original
values in case of error.
Signed-off-by: George Kennedy <george.kennedy@oracle.com>
Cc: stable <stable@vger.kernel.org>
Reported-by: syzbot+38a3699c7eaf165b97a6@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/1596213192-6635-2-git-send-email-george.kennedy@oracle.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
out-of-bounds access
Add a check to fbcon_resize() to ensure that a possible change to user font
height or user font width will not allow a font data out-of-bounds access.
NOTE: must use original charcount in calculation as font charcount can
change and cannot be used to determine the font data allocated size.
Signed-off-by: George Kennedy <george.kennedy@oracle.com>
Cc: stable <stable@vger.kernel.org>
Reported-by: syzbot+38a3699c7eaf165b97a6@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/1596213192-6635-1-git-send-email-george.kennedy@oracle.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
syzbot is reporting UAF bug in set_origin() from vc_do_resize() [1], for
vc_do_resize() calls kfree(vc->vc_screenbuf) before calling set_origin().
Unfortunately, in set_origin(), vc->vc_sw->con_set_origin() might access
vc->vc_pos when scroll is involved in order to manipulate cursor, but
vc->vc_pos refers already released vc->vc_screenbuf until vc->vc_pos gets
updated based on the result of vc->vc_sw->con_set_origin().
Preserving old buffer and tolerating outdated vc members until set_origin()
completes would be easier than preventing vc->vc_sw->con_set_origin() from
accessing outdated vc members.
[1] https://syzkaller.appspot.com/bug?id=6649da2081e2ebdc65c0642c214b27fe91099db3
Reported-by: syzbot <syzbot+9116ecc1978ca3a12f43@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1596034621-4714-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
This is not used at all.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
|
|
I do not know when ConfigInfoView::createStandardContextMenu() is
called.
Because QTextEdit::createStandardContextMenu() is not virtual,
ConfigInfoView::createStandardContextMenu() cannot override it.
Even if right-click the ConfigInfoView window, the "Show Debug Info"
menu does not show up.
Build up the menu in the constructor, and invoke it from the
contextMenuEvent().
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
|
|
If you right-click in the ConfigList window, you will see the following
messages in the console:
QObject::connect: No such slot QAction::setOn(bool) in scripts/kconfig/qconf.cc:888
QObject::connect: (sender name: 'config')
QObject::connect: No such slot QAction::setOn(bool) in scripts/kconfig/qconf.cc:897
QObject::connect: (sender name: 'config')
QObject::connect: No such slot QAction::setOn(bool) in scripts/kconfig/qconf.cc:906
QObject::connect: (sender name: 'config')
Right, there is no such slot in QAction. I think this is a typo of
setChecked.
Due to this bug, when you toggled the menu "Option->Show Name/Range/Data"
the state of the context menu was not previously updated. Fix this.
Fixes: d5d973c3f8a9 ("Port xconfig to Qt5 - Put back some of the old implementation(part 2)")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
|
|
Use the proper form of the RESTRICT keyword.
Quote the comments properly too.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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The '%' in filter/filter-out matches to any number of any characters,
including empty string.
So, '%config' matches to 'config', and '%install' to 'install'.
Drop the redundant patterns.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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