diff options
| author | Daniil Dulov <d.dulov@aladdin.ru> | 2025-06-17 16:56:34 +0300 |
|---|---|---|
| committer | Ping-Ke Shih <pkshih@realtek.com> | 2025-06-24 15:31:45 +0800 |
| commit | 16d8fd74dbfca0ea58645cd2fca13be10cae3cdd (patch) | |
| tree | f93bd42db2df96f742dec0cfb7a7dfa79ce00c55 /drivers/net/wireless/intel/iwlwifi/tests/utils.c | |
| parent | 44c0e191004f0e3aa1bdee3be248be14dbe5b020 (diff) | |
wifi: rtl818x: Kill URBs before clearing tx status queue
In rtl8187_stop() move the call of usb_kill_anchored_urbs() before clearing
b_tx_status.queue. This change prevents callbacks from using already freed
skb due to anchor was not killed before freeing such skb.
BUG: kernel NULL pointer dereference, address: 0000000000000080
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: Oops: 0000 [#1] SMP NOPTI
CPU: 7 UID: 0 PID: 0 Comm: swapper/7 Not tainted 6.15.0 #8 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015
RIP: 0010:ieee80211_tx_status_irqsafe+0x21/0xc0 [mac80211]
Call Trace:
<IRQ>
rtl8187_tx_cb+0x116/0x150 [rtl8187]
__usb_hcd_giveback_urb+0x9d/0x120
usb_giveback_urb_bh+0xbb/0x140
process_one_work+0x19b/0x3c0
bh_worker+0x1a7/0x210
tasklet_action+0x10/0x30
handle_softirqs+0xf0/0x340
__irq_exit_rcu+0xcd/0xf0
common_interrupt+0x85/0xa0
</IRQ>
Tested on RTL8187BvE device.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: c1db52b9d27e ("rtl8187: Use usb anchor facilities to manage urbs")
Signed-off-by: Daniil Dulov <d.dulov@aladdin.ru>
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20250617135634.21760-1-d.dulov@aladdin.ru
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/tests/utils.c')
0 files changed, 0 insertions, 0 deletions