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After the tagged commit, @netdev got documented twice and the kdoc
script didn't notice that. Remove the second description added later
and move the initial one according to the field position.
After merging commit 5f8e4007c10d ("kernel-doc: fix
struct_group_tagged() parsing"), kdoc requires to describe struct
groups as well. &page_pool_params has 2 struct groups which
generated new warnings, describe them to resolve this.
Fixes: 403f11ac9ab7 ("page_pool: don't use driver-set flags field directly")
Signed-off-by: Alexander Lobakin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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When the interrupt is enabled, the function lan8841_config_intr tries to
clear any pending interrupts by reading the interrupt status, then
checks the return value for errors and then continue to enable the
interrupt. It has been seen that once the system gets out of sleep mode,
the interrupt status has the value 0x400 meaning that the PHY detected
that the link was in low power. That is correct value but the problem is
that the check is wrong. We try to check for errors but we return an
error also in this case which is not an error. Therefore fix this by
returning only when there is an error.
Fixes: a8f1a19d27ef ("net: micrel: Add support for lan8841 PHY")
Signed-off-by: Horatiu Vultur <[email protected]>
Reviewed-by: Suman Ghosh <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Reviewed-by: Russell King (Oracle) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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When fec_probe() fails or fec_drv_remove() needs to release the
fec queue and remove a NAPI context, therefore add a function
corresponding to fec_enet_init() and call fec_enet_deinit() which
does the opposite to release memory and remove a NAPI context.
Fixes: 59d0f7465644 ("net: fec: init multi queue date structure")
Signed-off-by: Xiaolei Wang <[email protected]>
Reviewed-by: Wei Fang <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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constraints
The child nodes are missing "additionalProperties" constraints which
means any undocumented properties or child nodes are allowed. Add the
constraints and all the undocumented properties exposed by the fix.
Fixes: f562202fedad ("dt-bindings: net: pse-pd: Add bindings for TPS23881 PSE controller")
Signed-off-by: Rob Herring (Arm) <[email protected]>
Acked-by: Kory Maincent <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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"additionalProperties" constraints
The child nodes are missing "additionalProperties" constraints which
means any undocumented properties or child nodes are allowed. Add the
constraints, and fix the fallout of wrong manager node regex and
missing properties.
Fixes: 9c1de033afad ("dt-bindings: net: pse-pd: Add bindings for PD692x0 PSE controller")
Signed-off-by: Rob Herring (Arm) <[email protected]>
Acked-by: Kory Maincent <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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Jason commit made checks against ACK sequence less strict
and can be exploited by attackers to establish spoofed flows
with less probes.
Innocent users might use tcp_rmem[1] == 1,000,000,000,
or something more reasonable.
An attacker can use a regular TCP connection to learn the server
initial tp->rcv_wnd, and use it to optimize the attack.
If we make sure that only the announced window (smaller than 65535)
is used for ACK validation, we force an attacker to use
65537 packets to complete the 3WHS (assuming server ISN is unknown)
Fixes: 378979e94e95 ("tcp: remove 64 KByte limit for initial tp->rcv_wnd value")
Link: https://datatracker.ietf.org/meeting/119/materials/slides-119-tcpm-ghost-acks-00
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Neal Cardwell <[email protected]>
Reviewed-by: Jason Xing <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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Syzkaller was able to trigger
kernel BUG at net/core/gro.c:424 !
RIP: 0010:gro_pull_from_frag0 net/core/gro.c:424 [inline]
RIP: 0010:gro_try_pull_from_frag0 net/core/gro.c:446 [inline]
RIP: 0010:dev_gro_receive+0x242f/0x24b0 net/core/gro.c:571
Due to using an incorrect NAPI_GRO_CB(skb)->network_offset.
The referenced commit sets this offset to 0 in skb_gro_reset_offset.
That matches the expected case in dev_gro_receive:
pp = INDIRECT_CALL_INET(ptype->callbacks.gro_receive,
ipv6_gro_receive, inet_gro_receive,
&gro_list->list, skb);
But syzkaller injected an skb with protocol ETH_P_TEB into an ip6gre
device (by writing the IP6GRE encapsulated version to a TAP device).
The result was a first call to eth_gro_receive, and thus an extra
ETH_HLEN in network_offset that should not be there. First issue hit
is when computing offset from network header in ipv6_gro_pull_exthdrs.
Initialize both offsets in the network layer gro_receive.
This pairs with all reads in gro_receive, which use
skb_gro_receive_network_offset().
Fixes: 186b1ea73ad8 ("net: gro: use cb instead of skb->network_header")
Reported-by: syzkaller <[email protected]>
Signed-off-by: Willem de Bruijn <[email protected]>
CC: Richard Gobert <[email protected]>
Reviewed-by: Eric Dumazet <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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Cited commit started returning an error when user space requests to dump
the interface's IPv4 addresses and IPv4 is disabled on the interface.
Restore the previous behavior and do not return an error.
Before cited commit:
# ip address show dev dummy1
10: dummy1: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000
link/ether e2:40:68:98:d0:18 brd ff:ff:ff:ff:ff:ff
inet6 fe80::e040:68ff:fe98:d018/64 scope link proto kernel_ll
valid_lft forever preferred_lft forever
# ip link set dev dummy1 mtu 67
# ip address show dev dummy1
10: dummy1: <BROADCAST,NOARP,UP,LOWER_UP> mtu 67 qdisc noqueue state UNKNOWN group default qlen 1000
link/ether e2:40:68:98:d0:18 brd ff:ff:ff:ff:ff:ff
After cited commit:
# ip address show dev dummy1
10: dummy1: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000
link/ether 32:2d:69:f2:9c:99 brd ff:ff:ff:ff:ff:ff
inet6 fe80::302d:69ff:fef2:9c99/64 scope link proto kernel_ll
valid_lft forever preferred_lft forever
# ip link set dev dummy1 mtu 67
# ip address show dev dummy1
RTNETLINK answers: No such device
Dump terminated
With this patch:
# ip address show dev dummy1
10: dummy1: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000
link/ether de:17:56:bb:57:c0 brd ff:ff:ff:ff:ff:ff
inet6 fe80::dc17:56ff:febb:57c0/64 scope link proto kernel_ll
valid_lft forever preferred_lft forever
# ip link set dev dummy1 mtu 67
# ip address show dev dummy1
10: dummy1: <BROADCAST,NOARP,UP,LOWER_UP> mtu 67 qdisc noqueue state UNKNOWN group default qlen 1000
link/ether de:17:56:bb:57:c0 brd ff:ff:ff:ff:ff:ff
I fixed the exact same issue for IPv6 in commit c04f7dfe6ec2 ("ipv6: Fix
address dump when IPv6 is disabled on an interface"), but noted [1] that
I am not doing the change for IPv4 because I am not aware of a way to
disable IPv4 on an interface other than unregistering it. I clearly
missed the above case.
[1] https://lore.kernel.org/netdev/[email protected]/
Fixes: cdb2f80f1c10 ("inet: use xa_array iterator to implement inet_dump_ifaddr()")
Reported-by: Carolina Jubran <[email protected]>
Reported-by: Yamen Safadi <[email protected]>
Tested-by: Carolina Jubran <[email protected]>
Reviewed-by: Petr Machata <[email protected]>
Signed-off-by: Ido Schimmel <[email protected]>
Reviewed-by: Eric Dumazet <[email protected]>
Reviewed-by: David Ahern <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:
====================
pull-request: bpf 2024-05-27
We've added 15 non-merge commits during the last 7 day(s) which contain
a total of 18 files changed, 583 insertions(+), 55 deletions(-).
The main changes are:
1) Fix broken BPF multi-uprobe PID filtering logic which filtered by thread
while the promise was to filter by process, from Andrii Nakryiko.
2) Fix the recent influx of syzkaller reports to sockmap which triggered
a locking rule violation by performing a map_delete, from Jakub Sitnicki.
3) Fixes to netkit driver in particular on skb->pkt_type override upon pass
verdict, from Daniel Borkmann.
4) Fix an integer overflow in resolve_btfids which can wrongly trigger build
failures, from Friedrich Vock.
5) Follow-up fixes for ARC JIT reported by static analyzers,
from Shahab Vahedi.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
selftests/bpf: Cover verifier checks for mutating sockmap/sockhash
Revert "bpf, sockmap: Prevent lock inversion deadlock in map delete elem"
bpf: Allow delete from sockmap/sockhash only if update is allowed
selftests/bpf: Add netkit test for pkt_type
selftests/bpf: Add netkit tests for mac address
netkit: Fix pkt_type override upon netkit pass verdict
netkit: Fix setting mac address in l2 mode
ARC, bpf: Fix issues reported by the static analyzers
selftests/bpf: extend multi-uprobe tests with USDTs
selftests/bpf: extend multi-uprobe tests with child thread case
libbpf: detect broken PID filtering logic for multi-uprobe
bpf: remove unnecessary rcu_read_{lock,unlock}() in multi-uprobe attach logic
bpf: fix multi-uprobe PID filtering logic
bpf: Fix potential integer overflow in resolve_btfids
MAINTAINERS: Add myself as reviewer of ARM64 BPF JIT
====================
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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MODULE_DESCRIPTION() was optional until it became mandatory and
flagged as an error by 'make W=1'.
Reported-by: Andy Shevchenko <[email protected]>
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Reviewed-by: Péter Ujfalusi <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Follow the arbitrary Intel convention order to allow for easier grep.
MODULE_LICENSE
MODULE_DESCRIPTION
MODULE_IMPORT
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Reviewed-by: Péter Ujfalusi <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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The module information is spread across files, group in a single
location. For maintenability and alignment, the arbitrary Intel
convention is used with the following order:
MODULE_LICENSE
MODULE_DESCRIPTION
MODULE_IMPORT
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Reviewed-by: Péter Ujfalusi <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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This file is part of the snd-sof module, there's no reason to re-add the
MODULE_LICENSE here.
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Reviewed-by: Péter Ujfalusi <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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blk_stats_alloc_enable was used for block hybrid poll, the related
function definition was removed by patch:
commit 54bdd67d0f88 ("blk-mq: remove hybrid polling")
but the function declaration was not deleted.
Signed-off-by: hexue <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
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When powering on a null_blk device that is not already on, the return
value ret that is initialized to be count is reused to check the return
value of null_add_dev(), leading to nullb_device_power_store() to return
null_add_dev() return value (0 on success) instead of "count".
So make sure to set ret to be equal to count when there are no errors.
Fixes: a2db328b0839 ("null_blk: fix null-ptr-dereference while configuring 'power' and 'submit_queues'")
Signed-off-by: Damien Le Moal <[email protected]>
Reviewed-by: Yu Kuai <[email protected]>
Reviewed-by: Kanchan Joshi <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
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Verifier enforces that only certain program types can mutate sock{map,hash}
maps, that is update it or delete from it. Add test coverage for these
checks so we don't regress.
Signed-off-by: Jakub Sitnicki <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Acked-by: John Fastabend <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
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This reverts commit ff91059932401894e6c86341915615c5eb0eca48.
This check is no longer needed. BPF programs attached to tracepoints are
now rejected by the verifier when they attempt to delete from a
sockmap/sockhash maps.
Signed-off-by: Jakub Sitnicki <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Acked-by: John Fastabend <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
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We have seen an influx of syzkaller reports where a BPF program attached to
a tracepoint triggers a locking rule violation by performing a map_delete
on a sockmap/sockhash.
We don't intend to support this artificial use scenario. Extend the
existing verifier allowed-program-type check for updating sockmap/sockhash
to also cover deleting from a map.
From now on only BPF programs which were previously allowed to update
sockmap/sockhash can delete from these map types.
Fixes: ff9105993240 ("bpf, sockmap: Prevent lock inversion deadlock in map delete elem")
Reported-by: Tetsuo Handa <[email protected]>
Reported-by: [email protected]
Signed-off-by: Jakub Sitnicki <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Tested-by: [email protected]
Acked-by: John Fastabend <[email protected]>
Closes: https://syzkaller.appspot.com/bug?extid=ec941d6e24f633a59172
Link: https://lore.kernel.org/bpf/[email protected]
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An async dio write to a sparse file can generate a lot of extents
and when we unlink this file (using rm), the kernel can be busy in umapping
and freeing those extents as part of transaction processing.
Similarly xfs reflink remapping path can also iterate over a million
extent entries in xfs_reflink_remap_blocks().
Since we can busy loop in these two functions, so let's add cond_resched()
to avoid softlockup messages like these.
watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [kworker/1:0:82435]
CPU: 1 PID: 82435 Comm: kworker/1:0 Tainted: G S L 6.9.0-rc5-0-default #1
Workqueue: xfs-inodegc/sda2 xfs_inodegc_worker
NIP [c000000000beea10] xfs_extent_busy_trim+0x100/0x290
LR [c000000000bee958] xfs_extent_busy_trim+0x48/0x290
Call Trace:
xfs_alloc_get_rec+0x54/0x1b0 (unreliable)
xfs_alloc_compute_aligned+0x5c/0x144
xfs_alloc_ag_vextent_size+0x238/0x8d4
xfs_alloc_fix_freelist+0x540/0x694
xfs_free_extent_fix_freelist+0x84/0xe0
__xfs_free_extent+0x74/0x1ec
xfs_extent_free_finish_item+0xcc/0x214
xfs_defer_finish_one+0x194/0x388
xfs_defer_finish_noroll+0x1b4/0x5c8
xfs_defer_finish+0x2c/0xc4
xfs_bunmapi_range+0xa4/0x100
xfs_itruncate_extents_flags+0x1b8/0x2f4
xfs_inactive_truncate+0xe0/0x124
xfs_inactive+0x30c/0x3e0
xfs_inodegc_worker+0x140/0x234
process_scheduled_works+0x240/0x57c
worker_thread+0x198/0x468
kthread+0x138/0x140
start_kernel_thread+0x14/0x18
run fstests generic/175 at 2024-02-02 04:40:21
[ C17] watchdog: BUG: soft lockup - CPU#17 stuck for 23s! [xfs_io:7679]
watchdog: BUG: soft lockup - CPU#17 stuck for 23s! [xfs_io:7679]
CPU: 17 PID: 7679 Comm: xfs_io Kdump: loaded Tainted: G X 6.4.0
NIP [c008000005e3ec94] xfs_rmapbt_diff_two_keys+0x54/0xe0 [xfs]
LR [c008000005e08798] xfs_btree_get_leaf_keys+0x110/0x1e0 [xfs]
Call Trace:
0xc000000014107c00 (unreliable)
__xfs_btree_updkeys+0x8c/0x2c0 [xfs]
xfs_btree_update_keys+0x150/0x170 [xfs]
xfs_btree_lshift+0x534/0x660 [xfs]
xfs_btree_make_block_unfull+0x19c/0x240 [xfs]
xfs_btree_insrec+0x4e4/0x630 [xfs]
xfs_btree_insert+0x104/0x2d0 [xfs]
xfs_rmap_insert+0xc4/0x260 [xfs]
xfs_rmap_map_shared+0x228/0x630 [xfs]
xfs_rmap_finish_one+0x2d4/0x350 [xfs]
xfs_rmap_update_finish_item+0x44/0xc0 [xfs]
xfs_defer_finish_noroll+0x2e4/0x740 [xfs]
__xfs_trans_commit+0x1f4/0x400 [xfs]
xfs_reflink_remap_extent+0x2d8/0x650 [xfs]
xfs_reflink_remap_blocks+0x154/0x320 [xfs]
xfs_file_remap_range+0x138/0x3a0 [xfs]
do_clone_file_range+0x11c/0x2f0
vfs_clone_file_range+0x60/0x1c0
ioctl_file_clone+0x78/0x140
sys_ioctl+0x934/0x1270
system_call_exception+0x158/0x320
system_call_vectored_common+0x15c/0x2ec
Cc: Ojaswin Mujoo <[email protected]>
Signed-off-by: Ritesh Harjani (IBM) <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Tested-by: Disha Goel<[email protected]>
Signed-off-by: Chandan Babu R <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain fix from Ulf Hansson:
- Fix regression in gpcv2 PM domain for i.MX8
* tag 'pmdomain-v6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
pmdomain: imx: gpcv2: Add delay after power up handshake
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Don't stuff the values directly into the queue without any
synchronization, but instead delay applying the queue limits in
the caller and let dm_set_zones_restrictions work on the limit
structure.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Johannes Thumshirn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
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Fold it into the only caller in preparation to changes in the
queue limits setup.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Mike Snitzer <[email protected]>
Reviewed-by: Johannes Thumshirn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
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Keep it together with the rest of the zoned code.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Johannes Thumshirn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
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This is unused now that all the atomic queue limit conversions are
merged.
Signed-off-by: Christoph Hellwig <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
- Fix io_uring based write-through after converting cifs to use the
netfs library
- Fix aio error handling when doing write-through via netfs library
- Fix performance regression in iomap when used with non-large folio
mappings
- Fix signalfd error code
- Remove obsolete comment in signalfd code
- Fix async request indication in netfs_perform_write() by raising
BDP_ASYNC when IOCB_NOWAIT is set
- Yield swap device immediately to prevent spurious EBUSY errors
- Don't cross a .backup mountpoint from backup volumes in afs to avoid
infinite loops
- Fix a race between umount and async request completion in 9p after 9p
was converted to use the netfs library
* tag 'vfs-6.10-rc2.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
netfs, 9p: Fix race between umount and async request completion
afs: Don't cross .backup mountpoint from backup volume
swap: yield device immediately
netfs: Fix setting of BDP_ASYNC from iocb flags
signalfd: drop an obsolete comment
signalfd: fix error return code
iomap: fault in smaller chunks for non-large folio mappings
filemap: add helper mapping_max_folio_size()
netfs: Fix AIO error handling when doing write-through
netfs: Fix io_uring based write-through
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Commit c93f261dfc39 ("Documentation/core-api: add swiotlb documentation")
accidentally refers to CONFIG_DYNAMIC_SWIOTLB in one place, while the
config is actually called CONFIG_SWIOTLB_DYNAMIC.
Correct the reference to the intended config option.
Signed-off-by: Lukas Bulwahn <[email protected]>
Reviewed-by: Petr Tesarik <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>
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kthread creation may possibly fail inside race_signal_callback(). In
such a case stop the already started threads, put the already taken
references to them and return with error code.
Found by Linux Verification Center (linuxtesting.org).
Fixes: 2989f6451084 ("dma-buf: Add selftests for dma-fence")
Cc: [email protected]
Signed-off-by: Fedor Pchelkin <[email protected]>
Reviewed-by: T.J. Mercier <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Christian König <[email protected]>
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James no longer works for Cirrus Logic, remove him from the list of
maintainers for the Cirrus audio CODEC drivers.
Signed-off-by: Charles Keepax <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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wm_adsp is built as a separate module and as such should include a
MODULE_DESCRIPTION() macro.
Signed-off-by: Charles Keepax <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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The SoundWire interface can always support 44.1kHz using flow controlled
mode, and whether the ASP is in master mode should obviously only affect
the ASP. Update cs42l43_startup() to only restrict the rates for the ASP
DAI.
Fixes: fc918cbe874e ("ASoC: cs42l43: Add support for the cs42l43")
Signed-off-by: Charles Keepax <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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btf_find_struct_member() might return NULL or an error via the
ERR_PTR() macro. However, its caller in parse_btf_field() only checks
for the NULL condition. Fix this by using IS_ERR() and returning the
error up the stack.
Link: https://lore.kernel.org/all/[email protected]/
Fixes: c440adfbe3025 ("tracing/probes: Support BTF based data structure field access")
Signed-off-by: Carlos López <[email protected]>
Signed-off-by: Masami Hiramatsu (Google) <[email protected]>
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There's a problem in 9p's interaction with netfslib whereby a crash occurs
because the 9p_fid structs get forcibly destroyed during client teardown
(without paying attention to their refcounts) before netfslib has finished
with them. However, it's not a simple case of deferring the clunking that
p9_fid_put() does as that requires the p9_client record to still be
present.
The problem is that netfslib has to unlock pages and clear the IN_PROGRESS
flag before destroying the objects involved - including the fid - and, in
any case, nothing checks to see if writeback completed barring looking at
the page flags.
Fix this by keeping a count of outstanding I/O requests (of any type) and
waiting for it to quiesce during inode eviction.
Reported-by: [email protected]
Link: https://lore.kernel.org/all/[email protected]/
Reported-by: [email protected]
Link: https://lore.kernel.org/all/[email protected]/
Reported-by: [email protected]
Link: https://lore.kernel.org/all/[email protected]/
Signed-off-by: David Howells <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Tested-by: [email protected]
Reviewed-by: Dominique Martinet <[email protected]>
cc: Eric Van Hensbergen <[email protected]>
cc: Latchesar Ionkov <[email protected]>
cc: Christian Schoenebeck <[email protected]>
cc: Jeff Layton <[email protected]>
cc: Steve French <[email protected]>
cc: Hillf Danton <[email protected]>
cc: [email protected]
cc: [email protected]
cc: [email protected]
cc: [email protected]
cc: [email protected]
Reported-and-tested-by: [email protected]
Signed-off-by: Christian Brauner <[email protected]>
|
|
Trying to build parisc:allmodconfig with gcc 12.x or later results
in the following build error.
drivers/gpu/drm/nouveau/nvif/object.c: In function 'nvif_object_mthd':
drivers/gpu/drm/nouveau/nvif/object.c:161:9: error:
'memcpy' accessing 4294967264 or more bytes at offsets 0 and 32 overlaps 6442450881 bytes at offset -2147483617 [-Werror=restrict]
161 | memcpy(data, args->mthd.data, size);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/nouveau/nvif/object.c: In function 'nvif_object_ctor':
drivers/gpu/drm/nouveau/nvif/object.c:298:17: error:
'memcpy' accessing 4294967240 or more bytes at offsets 0 and 56 overlaps 6442450833 bytes at offset -2147483593 [-Werror=restrict]
298 | memcpy(data, args->new.data, size);
gcc assumes that 'sizeof(*args) + size' can overflow, which would result
in the problem.
The problem is not new, only it is now no longer a warning but an error
since W=1 has been enabled for the drm subsystem and since Werror is
enabled for test builds.
Rearrange arithmetic and use check_add_overflow() for validating the
allocation size to avoid the overflow. While at it, split assignments
out of if conditions.
Fixes: a61ddb4393ad ("drm: enable (most) W=1 warnings by default across the subsystem")
Cc: Javier Martinez Canillas <[email protected]>
Cc: Jani Nikula <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Danilo Krummrich <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Christophe JAILLET <[email protected]>
Cc: Joe Perches <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Danilo Krummrich <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
|
|
LED Select (LED_SEL) bit in the LED General Purpose IO Configuration
register is used to determine the functionality of external LED pins
(Speed Indicator, Link and Activity Indicator, Full Duplex Link
Indicator). The default value for this bit is 0 when no EEPROM is
present. If a EEPROM is present, the default value is the value of the
LED Select bit in the Configuration Flags of the EEPROM. A USB Reset or
Lite Reset (LRST) will cause this bit to be restored to the image value
last loaded from EEPROM, or to be set to 0 if no EEPROM is present.
While configuring the dual purpose GPIO/LED pins to LED outputs in the
LED General Purpose IO Configuration register, the LED_SEL bit is changed
as 0 and resulting the configured value from the EEPROM is cleared. The
issue is fixed by using read-modify-write approach.
Fixes: f293501c61c5 ("smsc95xx: configure LED outputs")
Signed-off-by: Parthiban Veerasooran <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Reviewed-by: Woojung Huh <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>
|
|
Don't open-code what the kernel already provides.
Signed-off-by: "Darrick J. Wong" <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Chandan Babu R <[email protected]>
|
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An internal user complained about log recovery failing on a symlink
("Bad dinode after recovery") with the following (excerpted) format:
core.magic = 0x494e
core.mode = 0120777
core.version = 3
core.format = 2 (extents)
core.nlinkv2 = 1
core.nextents = 1
core.size = 297
core.nblocks = 1
core.naextents = 0
core.forkoff = 0
core.aformat = 2 (extents)
u3.bmx[0] = [startoff,startblock,blockcount,extentflag]
0:[0,12,1,0]
This is a symbolic link with a 297-byte target stored in a disk block,
which is to say this is a symlink with a remote target. The forkoff is
0, which is to say that there's 512 - 176 == 336 bytes in the inode core
to store the data fork.
Eventually, testing of generic/388 failed with the same inode corruption
message during inode recovery. In writing a debugging patch to call
xfs_dinode_verify on dirty inode log items when we're committing
transactions, I observed that xfs/298 can reproduce the problem quite
quickly.
xfs/298 creates a symbolic link, adds some extended attributes, then
deletes them all. The test failure occurs when the final removexattr
also deletes the attr fork because that does not convert the remote
symlink back into a shortform symlink. That is how we trip this test.
The only reason why xfs/298 only triggers with the debug patch added is
that it deletes the symlink, so the final iflush shows the inode as
free.
I wrote a quick fstest to emulate the behavior of xfs/298, except that
it leaves the symlinks on the filesystem after inducing the "corrupt"
state. Kernels going back at least as far as 4.18 have written out
symlink inodes in this manner and prior to 1eb70f54c445f they did not
object to reading them back in.
Because we've been writing out inodes this way for quite some time, the
only way to fix this is to relax the check for symbolic links.
Directories don't have this problem because di_size is bumped to
blocksize during the sf->data conversion.
Fixes: 1eb70f54c445f ("xfs: validate inode fork size against fork format")
Signed-off-by: "Darrick J. Wong" <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Chandan Babu R <[email protected]>
|
|
When we were converting the attr code to use an explicit operation code
instead of keying off of attr->value being null, we forgot to change the
code that initializes the transaction reservation. Split the function
into two helpers that handle the !remove and remove cases, then fix both
callsites to handle this correctly.
Fixes: c27411d4c640 ("xfs: make attr removal an explicit operation")
Signed-off-by: "Darrick J. Wong" <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Chandan Babu R <[email protected]>
|
|
Chandan Babu reports the following livelock in xfs/708:
run fstests xfs/708 at 2024-05-04 15:35:29
XFS (loop16): EXPERIMENTAL online scrub feature in use. Use at your own risk!
XFS (loop5): Mounting V5 Filesystem e96086f0-a2f9-4424-a1d5-c75d53d823be
XFS (loop5): Ending clean mount
XFS (loop5): Quotacheck needed: Please wait.
XFS (loop5): Quotacheck: Done.
XFS (loop5): EXPERIMENTAL online scrub feature in use. Use at your own risk!
INFO: task xfs_io:143725 blocked for more than 122 seconds.
Not tainted 6.9.0-rc4+ #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:xfs_io state:D stack:0 pid:143725 tgid:143725 ppid:117661 flags:0x00004006
Call Trace:
<TASK>
__schedule+0x69c/0x17a0
schedule+0x74/0x1b0
io_schedule+0xc4/0x140
folio_wait_bit_common+0x254/0x650
shmem_undo_range+0x9d5/0xb40
shmem_evict_inode+0x322/0x8f0
evict+0x24e/0x560
__dentry_kill+0x17d/0x4d0
dput+0x263/0x430
__fput+0x2fc/0xaa0
task_work_run+0x132/0x210
get_signal+0x1a8/0x1910
arch_do_signal_or_restart+0x7b/0x2f0
syscall_exit_to_user_mode+0x1c2/0x200
do_syscall_64+0x72/0x170
entry_SYSCALL_64_after_hwframe+0x76/0x7e
The shmem code is trying to drop all the folios attached to a shmem
file and gets stuck on a locked folio after a bnobt repair. It looks
like the process has a signal pending, so I started looking for places
where we lock an xfile folio and then deal with a fatal signal.
I found a bug in xfarray_sort_scan via code inspection. This function
is called to set up the scanning phase of a quicksort operation, which
may involve grabbing a locked xfile folio. If we exit the function with
an error code, the caller does not call xfarray_sort_scan_done to put
the xfile folio. If _sort_scan returns an error code while si->folio is
set, we leak the reference and never unlock the folio.
Therefore, change xfarray_sort to call _scan_done on exit. This is safe
to call multiple times because it sets si->folio to NULL and ignores a
NULL si->folio. Also change _sort_scan to use an intermediate variable
so that we never pollute si->folio with an errptr.
Fixes: 232ea052775f9 ("xfs: enable sorting of xfile-backed arrays")
Reported-by: Chandan Babu R <[email protected]>
Signed-off-by: "Darrick J. Wong" <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Chandan Babu R <[email protected]>
|
|
In both xfs_alloc_cur_finish() and xfs_alloc_ag_vextent_exact(), local
variable @afg is tagged as __maybe_unused. Otherwise an unused variable
warning would be generated for when building with W=1 and CONFIG_XFS_DEBUG
unset. In both cases, the variable is unused as it is only referenced in
an ASSERT() call, which is compiled out (in this config).
It is generally a poor programming style to use __maybe_unused for
variables.
The ASSERT() call is to verify that agbno of the end of the extent is
within bounds for both functions. @afg is used as an intermediate variable
to find the AG length.
However xfs_verify_agbext() already exists to verify a valid extent range.
The arguments for calling xfs_verify_agbext() are already available, so use
that instead.
An advantage of using xfs_verify_agbext() is that it verifies that both the
start and the end of the extent are within the bounds of the AG and
catches overflows.
Suggested-by: Dave Chinner <[email protected]>
Signed-off-by: John Garry <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Chandan Babu R <[email protected]>
|
|
For CONFIG_XFS_DEBUG unset, xfs_iwalk_run_callbacks() generates the
following warning for when building with W=1:
fs/xfs/xfs_iwalk.c: In function ‘xfs_iwalk_run_callbacks’:
fs/xfs/xfs_iwalk.c:354:42: error: variable ‘irec’ set but not used [-Werror=unused-but-set-variable]
354 | struct xfs_inobt_rec_incore *irec;
| ^~~~
cc1: all warnings being treated as errors
Drop @irec, as it is only an intermediate variable.
Suggested-by: Christoph Hellwig <[email protected]>
Signed-off-by: John Garry <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Chandan Babu R <[email protected]>
|
|
There are two type of classes. "Leaf classes" that are the
bottom of the class hierarchy. "Inner classes" that are neither
the root class nor leaf classes. QoS rules can only specify leaf
classes as targets for traffic.
Root
/ \
/ \
1 2
/\
/ \
4 5
classes 1,4 and 5 are leaf classes.
class 2 is a inner class.
When a leaf class made as inner, or vice versa, resources associated
with send queue (send queue buffers and transmit schedulers) are not
getting freed.
Fixes: 5e6808b4c68d ("octeontx2-pf: Add support for HTB offload")
Signed-off-by: Hariprasad Kelam <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>
|
|
syzkaller reported data-race of sk->sk_hash in unix_autobind() [0],
and the same ones exist in unix_bind_bsd() and unix_bind_abstract().
The three bind() functions prefetch sk->sk_hash locklessly and
use it later after validating that unix_sk(sk)->addr is NULL under
unix_sk(sk)->bindlock.
The prefetched sk->sk_hash is the hash value of unbound socket set
in unix_create1() and does not change until bind() completes.
There could be a chance that sk->sk_hash changes after the lockless
read. However, in such a case, non-NULL unix_sk(sk)->addr is visible
under unix_sk(sk)->bindlock, and bind() returns -EINVAL without using
the prefetched value.
The KCSAN splat is false-positive, but let's silence it by reading
sk->sk_hash under unix_sk(sk)->bindlock.
[0]:
BUG: KCSAN: data-race in unix_autobind / unix_autobind
write to 0xffff888034a9fb88 of 4 bytes by task 4468 on cpu 0:
__unix_set_addr_hash net/unix/af_unix.c:331 [inline]
unix_autobind+0x47a/0x7d0 net/unix/af_unix.c:1185
unix_dgram_connect+0x7e3/0x890 net/unix/af_unix.c:1373
__sys_connect_file+0xd7/0xe0 net/socket.c:2048
__sys_connect+0x114/0x140 net/socket.c:2065
__do_sys_connect net/socket.c:2075 [inline]
__se_sys_connect net/socket.c:2072 [inline]
__x64_sys_connect+0x40/0x50 net/socket.c:2072
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x46/0x4e
read to 0xffff888034a9fb88 of 4 bytes by task 4465 on cpu 1:
unix_autobind+0x28/0x7d0 net/unix/af_unix.c:1134
unix_dgram_connect+0x7e3/0x890 net/unix/af_unix.c:1373
__sys_connect_file+0xd7/0xe0 net/socket.c:2048
__sys_connect+0x114/0x140 net/socket.c:2065
__do_sys_connect net/socket.c:2075 [inline]
__se_sys_connect net/socket.c:2072 [inline]
__x64_sys_connect+0x40/0x50 net/socket.c:2072
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x46/0x4e
value changed: 0x000000e4 -> 0x000001e3
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 4465 Comm: syz-executor.0 Not tainted 6.8.0-12822-gcd51db110a7e #12
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
Fixes: afd20b9290e1 ("af_unix: Replace the big lock with small locks.")
Reported-by: syzkaller <[email protected]>
Signed-off-by: Kuniyuki Iwashima <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>
|
|
Once unix_sk(sk)->addr is assigned under net->unx.table.locks and
unix_sk(sk)->bindlock, *(unix_sk(sk)->addr) and unix_sk(sk)->path are
fully set up, and unix_sk(sk)->addr is never changed.
unix_getname() and unix_copy_addr() access the two fields locklessly,
and commit ae3b564179bf ("missing barriers in some of unix_sock ->addr
and ->path accesses") added smp_store_release() and smp_load_acquire()
pairs.
In other functions, we still read unix_sk(sk)->addr locklessly to check
if the socket is bound, and KCSAN complains about it. [0]
Given these functions have no dependency for *(unix_sk(sk)->addr) and
unix_sk(sk)->path, READ_ONCE() is enough to annotate the data-race.
Note that it is safe to access unix_sk(sk)->addr locklessly if the socket
is found in the hash table. For example, the lockless read of otheru->addr
in unix_stream_connect() is safe.
Note also that newu->addr there is of the child socket that is still not
accessible from userspace, and smp_store_release() publishes the address
in case the socket is accept()ed and unix_getname() / unix_copy_addr()
is called.
[0]:
BUG: KCSAN: data-race in unix_bind / unix_listen
write (marked) to 0xffff88805f8d1840 of 8 bytes by task 13723 on cpu 0:
__unix_set_addr_hash net/unix/af_unix.c:329 [inline]
unix_bind_bsd net/unix/af_unix.c:1241 [inline]
unix_bind+0x881/0x1000 net/unix/af_unix.c:1319
__sys_bind+0x194/0x1e0 net/socket.c:1847
__do_sys_bind net/socket.c:1858 [inline]
__se_sys_bind net/socket.c:1856 [inline]
__x64_sys_bind+0x40/0x50 net/socket.c:1856
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x46/0x4e
read to 0xffff88805f8d1840 of 8 bytes by task 13724 on cpu 1:
unix_listen+0x72/0x180 net/unix/af_unix.c:734
__sys_listen+0xdc/0x160 net/socket.c:1881
__do_sys_listen net/socket.c:1890 [inline]
__se_sys_listen net/socket.c:1888 [inline]
__x64_sys_listen+0x2e/0x40 net/socket.c:1888
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x46/0x4e
value changed: 0x0000000000000000 -> 0xffff88807b5b1b40
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 13724 Comm: syz-executor.4 Not tainted 6.8.0-12822-gcd51db110a7e #12
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: syzkaller <[email protected]>
Signed-off-by: Kuniyuki Iwashima <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>
|
|
The hsr_ping test reports the following errors:
INFO: preparing interfaces for HSRv0.
INFO: Initial validation ping.
INFO: Longer ping test.
INFO: Cutting one link.
INFO: Delay the link and drop a few packages.
INFO: All good.
INFO: preparing interfaces for HSRv1.
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
Error: ipv4: Address already assigned.
Error: ipv6: address already assigned.
Error: ipv4: Address already assigned.
Error: ipv6: address already assigned.
Error: ipv4: Address already assigned.
Error: ipv6: address already assigned.
INFO: Initial validation ping.
That is because the cleanup code for the 2nd round test before
"setup_hsr_interfaces 1" is removed incorrectly in commit 680fda4f6714
("test: hsr: Remove script code already implemented in lib.sh").
This patch fixes it by re-setup the namespaces using
setup_ns ns1 ns2 ns3
command before "setup_hsr_interfaces 1". It deletes previous namespaces
and create new ones.
Fixes: 680fda4f6714 ("test: hsr: Remove script code already implemented in lib.sh")
Reviewed-by: Hangbin Liu <[email protected]>
Signed-off-by: Geliang Tang <[email protected]>
Link: https://lore.kernel.org/r/6485d3005f467758d49f0f313c8c009759ba6b05.1716374462.git.tanggeliang@kylinos.cn
Signed-off-by: Paolo Abeni <[email protected]>
|
|
The "EZpad 6s Pro" uses the same touchscreen as the "EZpad 6 Pro B",
unlike the "Ezpad 6 Pro" which has its own touchscreen.
Signed-off-by: hmtheboy154 <[email protected]>
Reviewed-by: Hans de Goede <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
|
|
This is a tablet created by GlobalSpace Technologies Limited
which uses an Intel Atom x5-Z8300, 4GB of RAM & 64GB of storage.
Link: https://web.archive.org/web/20171102141952/http://globalspace.in/11.6-device.html
Signed-off-by: hmtheboy154 <[email protected]>
Reviewed-by: Hans de Goede <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
|
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properties from cmdline
On x86/ACPI platforms touchscreens mostly just work without needing any
device/model specific configuration. But in some cases (mostly with Silead
and Goodix touchscreens) it is still necessary to manually specify various
touchscreen-properties on a per model basis.
touchscreen_dmi is a special place for DMI quirks for this, but it can be
challenging for users to figure out the right property values, especially
for Silead touchscreens where non of these can be read back from
the touchscreen-controller.
ATM users can only test touchscreen properties by editing touchscreen_dmi.c
and then building a completely new kernel which makes it unnecessary
difficult for users to test and submit properties when necessary for their
laptop / tablet model.
Add support for specifying properties on the kernel commandline to allow
users to easily figure out the right settings. See the added documentation
in kernel-parameters.txt for the commandline syntax.
Cc: Gregor Riepl <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
|
|
Now that drivers/platform/x86/thinkpad_acpi.c uses
sparse_keymap_report_event(), it must select INPUT_SPARSEKMAP in its
Kconfig option otherwise the build fails with:
ld: vmlinux.o: in function `tpacpi_input_send_key':
thinkpad_acpi.c:(.text+0xd4d27f): undefined reference to `sparse_keymap_report_event'
ld: vmlinux.o: in function `hotkey_init':
thinkpad_acpi.c:(.init.text+0x66cb6): undefined reference to `sparse_keymap_setup'
Fixes: 42f7b965de9d ("platform/x86: thinkpad_acpi: Switch to using sparse-keymap helpers")
Signed-off-by: Steven Rostedt (Google) <[email protected]>
Reviewed-by: Hans de Goede <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Hans de Goede <[email protected]>
|
|
Since the x86-android-tablets now calls devm_led_classdev_register_ext()
it needs to select LEDS_CLASS as well as LEDS_CLASS' NEW_LEDS dependency.
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Hans de Goede <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
|
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In tpmi_sst_dev_remove(), tpmi_sst is dereferenced after being freed.
Fix this by reordering the kfree() post the dereference.
Fixes: 9d1d36268f3d ("platform/x86: ISST: Support partitioned systems")
Signed-off-by: Harshit Mogalapalli <[email protected]>
Reviewed-by: Hans de Goede <[email protected]>
Acked-by: Srinivas Pandruvada <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Hans de Goede <[email protected]>
|