INFO: trying to register non-static key in ath9k_htc_rx_msg

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syzbot

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Mar 27, 2020, 9:30:15 AM3/27/20

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Hello,

syzbot found the following crash on:

HEAD commit: e17994d1 usb: core: kcov: collect coverage from usb comple..
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=1274cdc5e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=5d64370c438bc60
dashboard link: https://syzkaller.appspot.com/bug?extid=835e7082fea90ddd153f
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1415bba7e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12c3316be00000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+835e70...@syzkaller.appspotmail.com

INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.6.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xef/0x16e lib/dump_stack.c:118
assign_lock_key kernel/locking/lockdep.c:880 [inline]
register_lock_class+0x1022/0x11d0 kernel/locking/lockdep.c:1189
__lock_acquire+0xfc/0x3b60 kernel/locking/lockdep.c:3836
lock_acquire+0x130/0x340 kernel/locking/lockdep.c:4484
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159
complete+0x13/0x70 kernel/sched/completion.c:32
htc_process_conn_rsp drivers/net/wireless/ath/ath9k/htc_hst.c:138 [inline]
ath9k_htc_rx_msg+0x7c2/0xaf0 drivers/net/wireless/ath/ath9k/htc_hst.c:443
ath9k_hif_usb_reg_in_cb+0x1ba/0x630 drivers/net/wireless/ath/ath9k/hif_usb.c:718
__usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716

---
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Andrey Konovalov

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Jun 12, 2020, 9:02:56 AM6/12/20

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