| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
RDMA/hns: Fix refcount leak in hns_roce_mmap
rdma_user_mmap_entry_get_pgoff() takes the reference.
Add missing rdma_user_mmap_entry_put() to release the reference.
Acked-by Haoyue Xu <[email protected]> |
| In the Linux kernel, the following vulnerability has been resolved:
driver: soc: xilinx: use _safe loop iterator to avoid a use after free
The hash_for_each_possible() loop dereferences "eve_data" to get the
next item on the list. However the loop frees eve_data so it leads to
a use after free. Use hash_for_each_possible_safe() instead. |
| In the Linux kernel, the following vulnerability has been resolved:
devlink: hold region lock when flushing snapshots
Netdevsim triggers a splat on reload, when it destroys regions
with snapshots pending:
WARNING: CPU: 1 PID: 787 at net/core/devlink.c:6291 devlink_region_snapshot_del+0x12e/0x140
CPU: 1 PID: 787 Comm: devlink Not tainted 6.1.0-07460-g7ae9888d6e1c #580
RIP: 0010:devlink_region_snapshot_del+0x12e/0x140
Call Trace:
<TASK>
devl_region_destroy+0x70/0x140
nsim_dev_reload_down+0x2f/0x60 [netdevsim]
devlink_reload+0x1f7/0x360
devlink_nl_cmd_reload+0x6ce/0x860
genl_family_rcv_msg_doit.isra.0+0x145/0x1c0
This is the locking assert in devlink_region_snapshot_del(),
we're supposed to be holding the region->snapshot_lock here. |
| In the Linux kernel, the following vulnerability has been resolved:
mptcp: fix NULL pointer dereference on fastopen early fallback
In case of early fallback to TCP, subflow_syn_recv_sock() deletes
the subflow context before returning the newly allocated sock to
the caller.
The fastopen path does not cope with the above unconditionally
dereferencing the subflow context. |
| In the Linux kernel, the following vulnerability has been resolved:
perf/x86: Fix NULL event access and potential PEBS record loss
When intel_pmu_drain_pebs_icl() is called to drain PEBS records, the
perf_event_overflow() could be called to process the last PEBS record.
While perf_event_overflow() could trigger the interrupt throttle and
stop all events of the group, like what the below call-chain shows.
perf_event_overflow()
-> __perf_event_overflow()
->__perf_event_account_interrupt()
-> perf_event_throttle_group()
-> perf_event_throttle()
-> event->pmu->stop()
-> x86_pmu_stop()
The side effect of stopping the events is that all corresponding event
pointers in cpuc->events[] array are cleared to NULL.
Assume there are two PEBS events (event a and event b) in a group. When
intel_pmu_drain_pebs_icl() calls perf_event_overflow() to process the
last PEBS record of PEBS event a, interrupt throttle is triggered and
all pointers of event a and event b are cleared to NULL. Then
intel_pmu_drain_pebs_icl() tries to process the last PEBS record of
event b and encounters NULL pointer access.
To avoid this issue, move cpuc->events[] clearing from x86_pmu_stop()
to x86_pmu_del(). It's safe since cpuc->active_mask or
cpuc->pebs_enabled is always checked before access the event pointer
from cpuc->events[]. |
| In the Linux kernel, the following vulnerability has been resolved:
scsi: efct: Fix possible memleak in efct_device_init()
In efct_device_init(), when efct_scsi_reg_fc_transport() fails,
efct_scsi_tgt_driver_exit() is not called to release memory for
efct_scsi_tgt_driver_init() and causes memleak:
unreferenced object 0xffff8881020ce000 (size 2048):
comm "modprobe", pid 465, jiffies 4294928222 (age 55.872s)
backtrace:
[<0000000021a1ef1b>] kmalloc_trace+0x27/0x110
[<000000004c3ed51c>] target_register_template+0x4fd/0x7b0 [target_core_mod]
[<00000000f3393296>] efct_scsi_tgt_driver_init+0x18/0x50 [efct]
[<00000000115de533>] 0xffffffffc0d90011
[<00000000d608f646>] do_one_initcall+0xd0/0x4e0
[<0000000067828cf1>] do_init_module+0x1cc/0x6a0
... |
| In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: fix potential memory leak in mlx5e_init_rep_rx
The memory pointed to by the priv->rx_res pointer is not freed in the error
path of mlx5e_init_rep_rx, which can lead to a memory leak. Fix by freeing
the memory in the error path, thereby making the error path identical to
mlx5e_cleanup_rep_rx(). |
| In the Linux kernel, the following vulnerability has been resolved:
tpm: Add !tpm_amd_is_rng_defective() to the hwrng_unregister() call site
The following crash was reported:
[ 1950.279393] list_del corruption, ffff99560d485790->next is NULL
[ 1950.279400] ------------[ cut here ]------------
[ 1950.279401] kernel BUG at lib/list_debug.c:49!
[ 1950.279405] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[ 1950.279407] CPU: 11 PID: 5886 Comm: modprobe Tainted: G O 6.2.8_1 #1
[ 1950.279409] Hardware name: Gigabyte Technology Co., Ltd. B550M AORUS PRO-P/B550M AORUS PRO-P,
BIOS F15c 05/11/2022
[ 1950.279410] RIP: 0010:__list_del_entry_valid+0x59/0xc0
[ 1950.279415] Code: 48 8b 01 48 39 f8 75 5a 48 8b 72 08 48 39 c6 75 65 b8 01 00 00 00 c3 cc cc cc
cc 48 89 fe 48 c7 c7 08 a8 13 9e e8 b7 0a bc ff <0f> 0b 48 89 fe 48 c7 c7 38 a8 13 9e e8 a6 0a bc
ff 0f 0b 48 89 fe
[ 1950.279416] RSP: 0018:ffffa96d05647e08 EFLAGS: 00010246
[ 1950.279418] RAX: 0000000000000033 RBX: ffff99560d485750 RCX: 0000000000000000
[ 1950.279419] RDX: 0000000000000000 RSI: ffffffff9e107c59 RDI: 00000000ffffffff
[ 1950.279420] RBP: ffffffffc19c5168 R08: 0000000000000000 R09: ffffa96d05647cc8
[ 1950.279421] R10: 0000000000000003 R11: ffffffff9ea2a568 R12: 0000000000000000
[ 1950.279422] R13: ffff99560140a2e0 R14: ffff99560127d2e0 R15: 0000000000000000
[ 1950.279422] FS: 00007f67da795380(0000) GS:ffff995d1f0c0000(0000) knlGS:0000000000000000
[ 1950.279424] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1950.279424] CR2: 00007f67da7e65c0 CR3: 00000001feed2000 CR4: 0000000000750ee0
[ 1950.279426] PKRU: 55555554
[ 1950.279426] Call Trace:
[ 1950.279428] <TASK>
[ 1950.279430] hwrng_unregister+0x28/0xe0 [rng_core]
[ 1950.279436] tpm_chip_unregister+0xd5/0xf0 [tpm]
Add the forgotten !tpm_amd_is_rng_defective() invariant to the
hwrng_unregister() call site inside tpm_chip_unregister(). |
| In the Linux kernel, the following vulnerability has been resolved:
inotify: Avoid reporting event with invalid wd
When inotify_freeing_mark() races with inotify_handle_inode_event() it
can happen that inotify_handle_inode_event() sees that i_mark->wd got
already reset to -1 and reports this value to userspace which can
confuse the inotify listener. Avoid the problem by validating that wd is
sensible (and pretend the mark got removed before the event got
generated otherwise). |
| In the Linux kernel, the following vulnerability has been resolved:
coresight: ETR: Fix ETR buffer use-after-free issue
When ETR is enabled as CS_MODE_SYSFS, if the buffer size is changed
and enabled again, currently sysfs_buf will point to the newly
allocated memory(buf_new) and free the old memory(buf_old). But the
etr_buf that is being used by the ETR remains pointed to buf_old, not
updated to buf_new. In this case, it will result in a memory
use-after-free issue.
Fix this by checking ETR's mode before updating and releasing buf_old,
if the mode is CS_MODE_SYSFS, then skip updating and releasing it. |
| In the Linux kernel, the following vulnerability has been resolved:
ixgbe: Fix panic during XDP_TX with > 64 CPUs
Commit 4fe815850bdc ("ixgbe: let the xdpdrv work with more than 64 cpus")
adds support to allow XDP programs to run on systems with more than
64 CPUs by locking the XDP TX rings and indexing them using cpu % 64
(IXGBE_MAX_XDP_QS).
Upon trying this out patch on a system with more than 64 cores,
the kernel paniced with an array-index-out-of-bounds at the return in
ixgbe_determine_xdp_ring in ixgbe.h, which means ixgbe_determine_xdp_q_idx
was just returning the cpu instead of cpu % IXGBE_MAX_XDP_QS. An example
splat:
==========================================================================
UBSAN: array-index-out-of-bounds in
/var/lib/dkms/ixgbe/5.18.6+focal-1/build/src/ixgbe.h:1147:26
index 65 is out of range for type 'ixgbe_ring *[64]'
==========================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000058
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#1] SMP NOPTI
CPU: 65 PID: 408 Comm: ksoftirqd/65
Tainted: G IOE 5.15.0-48-generic #54~20.04.1-Ubuntu
Hardware name: Dell Inc. PowerEdge R640/0W23H8, BIOS 2.5.4 01/13/2020
RIP: 0010:ixgbe_xmit_xdp_ring+0x1b/0x1c0 [ixgbe]
Code: 3b 52 d4 cf e9 42 f2 ff ff 66 0f 1f 44 00 00 0f 1f 44 00 00 55 b9
00 00 00 00 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 08 <44> 0f b7
47 58 0f b7 47 5a 0f b7 57 54 44 0f b7 76 08 66 41 39 c0
RSP: 0018:ffffbc3fcd88fcb0 EFLAGS: 00010282
RAX: ffff92a253260980 RBX: ffffbc3fe68b00a0 RCX: 0000000000000000
RDX: ffff928b5f659000 RSI: ffff928b5f659000 RDI: 0000000000000000
RBP: ffffbc3fcd88fce0 R08: ffff92b9dfc20580 R09: 0000000000000001
R10: 3d3d3d3d3d3d3d3d R11: 3d3d3d3d3d3d3d3d R12: 0000000000000000
R13: ffff928b2f0fa8c0 R14: ffff928b9be20050 R15: 000000000000003c
FS: 0000000000000000(0000) GS:ffff92b9dfc00000(0000)
knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000058 CR3: 000000011dd6a002 CR4: 00000000007706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
<TASK>
ixgbe_poll+0x103e/0x1280 [ixgbe]
? sched_clock_cpu+0x12/0xe0
__napi_poll+0x30/0x160
net_rx_action+0x11c/0x270
__do_softirq+0xda/0x2ee
run_ksoftirqd+0x2f/0x50
smpboot_thread_fn+0xb7/0x150
? sort_range+0x30/0x30
kthread+0x127/0x150
? set_kthread_struct+0x50/0x50
ret_from_fork+0x1f/0x30
</TASK>
I think this is how it happens:
Upon loading the first XDP program on a system with more than 64 CPUs,
ixgbe_xdp_locking_key is incremented in ixgbe_xdp_setup. However,
immediately after this, the rings are reconfigured by ixgbe_setup_tc.
ixgbe_setup_tc calls ixgbe_clear_interrupt_scheme which calls
ixgbe_free_q_vectors which calls ixgbe_free_q_vector in a loop.
ixgbe_free_q_vector decrements ixgbe_xdp_locking_key once per call if
it is non-zero. Commenting out the decrement in ixgbe_free_q_vector
stopped my system from panicing.
I suspect to make the original patch work, I would need to load an XDP
program and then replace it in order to get ixgbe_xdp_locking_key back
above 0 since ixgbe_setup_tc is only called when transitioning between
XDP and non-XDP ring configurations, while ixgbe_xdp_locking_key is
incremented every time ixgbe_xdp_setup is called.
Also, ixgbe_setup_tc can be called via ethtool --set-channels, so this
becomes another path to decrement ixgbe_xdp_locking_key to 0 on systems
with more than 64 CPUs.
Since ixgbe_xdp_locking_key only protects the XDP_TX path and is tied
to the number of CPUs present, there is no reason to disable it upon
unloading an XDP program. To avoid confusion, I have moved enabling
ixgbe_xdp_locking_key into ixgbe_sw_init, which is part of the probe path. |
| In the Linux kernel, the following vulnerability has been resolved:
media: max9286: Free control handler
The control handler is leaked in some probe-time error paths, as well as
in the remove path. Fix it. |
| In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix missed ses refcounting
Use new cifs_smb_ses_inc_refcount() helper to get an active reference
of @ses and @ses->dfs_root_ses (if set). This will prevent
@ses->dfs_root_ses of being put in the next call to cifs_put_smb_ses()
and thus potentially causing an use-after-free bug. |
| In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix race when deleting free space root from the dirty cow roots list
When deleting the free space tree we are deleting the free space root
from the list fs_info->dirty_cowonly_roots without taking the lock that
protects it, which is struct btrfs_fs_info::trans_lock.
This unsynchronized list manipulation may cause chaos if there's another
concurrent manipulation of this list, such as when adding a root to it
with ctree.c:add_root_to_dirty_list().
This can result in all sorts of weird failures caused by a race, such as
the following crash:
[337571.278245] general protection fault, probably for non-canonical address 0xdead000000000108: 0000 [#1] PREEMPT SMP PTI
[337571.278933] CPU: 1 PID: 115447 Comm: btrfs Tainted: G W 6.4.0-rc6-btrfs-next-134+ #1
[337571.279153] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[337571.279572] RIP: 0010:commit_cowonly_roots+0x11f/0x250 [btrfs]
[337571.279928] Code: 85 38 06 00 (...)
[337571.280363] RSP: 0018:ffff9f63446efba0 EFLAGS: 00010206
[337571.280582] RAX: ffff942d98ec2638 RBX: ffff9430b82b4c30 RCX: 0000000449e1c000
[337571.280798] RDX: dead000000000100 RSI: ffff9430021e4900 RDI: 0000000000036070
[337571.281015] RBP: ffff942d98ec2000 R08: ffff942d98ec2000 R09: 000000000000015b
[337571.281254] R10: 0000000000000009 R11: 0000000000000001 R12: ffff942fe8fbf600
[337571.281476] R13: ffff942dabe23040 R14: ffff942dabe20800 R15: ffff942d92cf3b48
[337571.281723] FS: 00007f478adb7340(0000) GS:ffff94349fa40000(0000) knlGS:0000000000000000
[337571.281950] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[337571.282184] CR2: 00007f478ab9a3d5 CR3: 000000001e02c001 CR4: 0000000000370ee0
[337571.282416] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[337571.282647] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[337571.282874] Call Trace:
[337571.283101] <TASK>
[337571.283327] ? __die_body+0x1b/0x60
[337571.283570] ? die_addr+0x39/0x60
[337571.283796] ? exc_general_protection+0x22e/0x430
[337571.284022] ? asm_exc_general_protection+0x22/0x30
[337571.284251] ? commit_cowonly_roots+0x11f/0x250 [btrfs]
[337571.284531] btrfs_commit_transaction+0x42e/0xf90 [btrfs]
[337571.284803] ? _raw_spin_unlock+0x15/0x30
[337571.285031] ? release_extent_buffer+0x103/0x130 [btrfs]
[337571.285305] reset_balance_state+0x152/0x1b0 [btrfs]
[337571.285578] btrfs_balance+0xa50/0x11e0 [btrfs]
[337571.285864] ? __kmem_cache_alloc_node+0x14a/0x410
[337571.286086] btrfs_ioctl+0x249a/0x3320 [btrfs]
[337571.286358] ? mod_objcg_state+0xd2/0x360
[337571.286577] ? refill_obj_stock+0xb0/0x160
[337571.286798] ? seq_release+0x25/0x30
[337571.287016] ? __rseq_handle_notify_resume+0x3ba/0x4b0
[337571.287235] ? percpu_counter_add_batch+0x2e/0xa0
[337571.287455] ? __x64_sys_ioctl+0x88/0xc0
[337571.287675] __x64_sys_ioctl+0x88/0xc0
[337571.287901] do_syscall_64+0x38/0x90
[337571.288126] entry_SYSCALL_64_after_hwframe+0x72/0xdc
[337571.288352] RIP: 0033:0x7f478aaffe9b
So fix this by locking struct btrfs_fs_info::trans_lock before deleting
the free space root from that list. |
| In the Linux kernel, the following vulnerability has been resolved:
net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment()
As the call trace shows, skb_panic was caused by wrong skb->mac_header
in nsh_gso_segment():
invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 3 PID: 2737 Comm: syz Not tainted 6.3.0-next-20230505 #1
RIP: 0010:skb_panic+0xda/0xe0
call Trace:
skb_push+0x91/0xa0
nsh_gso_segment+0x4f3/0x570
skb_mac_gso_segment+0x19e/0x270
__skb_gso_segment+0x1e8/0x3c0
validate_xmit_skb+0x452/0x890
validate_xmit_skb_list+0x99/0xd0
sch_direct_xmit+0x294/0x7c0
__dev_queue_xmit+0x16f0/0x1d70
packet_xmit+0x185/0x210
packet_snd+0xc15/0x1170
packet_sendmsg+0x7b/0xa0
sock_sendmsg+0x14f/0x160
The root cause is:
nsh_gso_segment() use skb->network_header - nhoff to reset mac_header
in skb_gso_error_unwind() if inner-layer protocol gso fails.
However, skb->network_header may be reset by inner-layer protocol
gso function e.g. mpls_gso_segment. skb->mac_header reset by the
inaccurate network_header will be larger than skb headroom.
nsh_gso_segment
nhoff = skb->network_header - skb->mac_header;
__skb_pull(skb,nsh_len)
skb_mac_gso_segment
mpls_gso_segment
skb_reset_network_header(skb);//skb->network_header+=nsh_len
return -EINVAL;
skb_gso_error_unwind
skb_push(skb, nsh_len);
skb->mac_header = skb->network_header - nhoff;
// skb->mac_header > skb->headroom, cause skb_push panic
Use correct mac_offset to restore mac_header and get rid of nhoff. |
| In the Linux kernel, the following vulnerability has been resolved:
RDMA/siw: Fix immediate work request flush to completion queue
Correctly set send queue element opcode during immediate work request
flushing in post sendqueue operation, if the QP is in ERROR state.
An undefined ocode value results in out-of-bounds access to an array
for mapping the opcode between siw internal and RDMA core representation
in work completion generation. It resulted in a KASAN BUG report
of type 'global-out-of-bounds' during NFSoRDMA testing.
This patch further fixes a potential case of a malicious user which may
write undefined values for completion queue elements status or opcode,
if the CQ is memory mapped to user land. It avoids the same out-of-bounds
access to arrays for status and opcode mapping as described above. |
| In the Linux kernel, the following vulnerability has been resolved:
kheaders: Use array declaration instead of char
Under CONFIG_FORTIFY_SOURCE, memcpy() will check the size of destination
and source buffers. Defining kernel_headers_data as "char" would trip
this check. Since these addresses are treated as byte arrays, define
them as arrays (as done everywhere else).
This was seen with:
$ cat /sys/kernel/kheaders.tar.xz >> /dev/null
detected buffer overflow in memcpy
kernel BUG at lib/string_helpers.c:1027!
...
RIP: 0010:fortify_panic+0xf/0x20
[...]
Call Trace:
<TASK>
ikheaders_read+0x45/0x50 [kheaders]
kernfs_fop_read_iter+0x1a4/0x2f0
... |
| In the Linux kernel, the following vulnerability has been resolved:
hfs: Fix OOB Write in hfs_asc2mac
Syzbot reported a OOB Write bug:
loop0: detected capacity change from 0 to 64
==================================================================
BUG: KASAN: slab-out-of-bounds in hfs_asc2mac+0x467/0x9a0
fs/hfs/trans.c:133
Write of size 1 at addr ffff88801848314e by task syz-executor391/3632
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
print_address_description+0x74/0x340 mm/kasan/report.c:284
print_report+0x107/0x1f0 mm/kasan/report.c:395
kasan_report+0xcd/0x100 mm/kasan/report.c:495
hfs_asc2mac+0x467/0x9a0 fs/hfs/trans.c:133
hfs_cat_build_key+0x92/0x170 fs/hfs/catalog.c:28
hfs_lookup+0x1ab/0x2c0 fs/hfs/dir.c:31
lookup_open fs/namei.c:3391 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x10e6/0x2df0 fs/namei.c:3710
do_filp_open+0x264/0x4f0 fs/namei.c:3740
If in->len is much larger than HFS_NAMELEN(31) which is the maximum
length of an HFS filename, a OOB write could occur in hfs_asc2mac(). In
that case, when the dst reaches the boundary, the srclen is still
greater than 0, which causes a OOB write.
Fix this by adding a check on dstlen in while() before writing to dst
address. |
| In the Linux kernel, the following vulnerability has been resolved:
kcm: Fix memory leak in error path of kcm_sendmsg()
syzbot reported a memory leak like below:
BUG: memory leak
unreferenced object 0xffff88810b088c00 (size 240):
comm "syz-executor186", pid 5012, jiffies 4294943306 (age 13.680s)
hex dump (first 32 bytes):
00 89 08 0b 81 88 ff ff 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff83e5d5ff>] __alloc_skb+0x1ef/0x230 net/core/skbuff.c:634
[<ffffffff84606e59>] alloc_skb include/linux/skbuff.h:1289 [inline]
[<ffffffff84606e59>] kcm_sendmsg+0x269/0x1050 net/kcm/kcmsock.c:815
[<ffffffff83e479c6>] sock_sendmsg_nosec net/socket.c:725 [inline]
[<ffffffff83e479c6>] sock_sendmsg+0x56/0xb0 net/socket.c:748
[<ffffffff83e47f55>] ____sys_sendmsg+0x365/0x470 net/socket.c:2494
[<ffffffff83e4c389>] ___sys_sendmsg+0xc9/0x130 net/socket.c:2548
[<ffffffff83e4c536>] __sys_sendmsg+0xa6/0x120 net/socket.c:2577
[<ffffffff84ad7bb8>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
[<ffffffff84ad7bb8>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
[<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
In kcm_sendmsg(), kcm_tx_msg(head)->last_skb is used as a cursor to append
newly allocated skbs to 'head'. If some bytes are copied, an error occurred,
and jumped to out_error label, 'last_skb' is left unmodified. A later
kcm_sendmsg() will use an obsoleted 'last_skb' reference, corrupting the
'head' frag_list and causing the leak.
This patch fixes this issue by properly updating the last allocated skb in
'last_skb'. |
| In the Linux kernel, the following vulnerability has been resolved:
soundwire: fix enumeration completion
The soundwire subsystem uses two completion structures that allow
drivers to wait for soundwire device to become enumerated on the bus and
initialised by their drivers, respectively.
The code implementing the signalling is currently broken as it does not
signal all current and future waiters and also uses the wrong
reinitialisation function, which can potentially lead to memory
corruption if there are still waiters on the queue.
Not signalling future waiters specifically breaks sound card probe
deferrals as codec drivers can not tell that the soundwire device is
already attached when being reprobed. Some codec runtime PM
implementations suffer from similar problems as waiting for enumeration
during resume can also timeout despite the device already having been
enumerated. |
