INFO: trying to register non-static key in devres_release_all
syzbot
syzbot found the following crash on:
HEAD commit: 0fa84af8 Merge tag 'usb-serial-5.7-rc1' of https://git.ker..
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=101ed95de00000
kernel config: https://syzkaller.appspot.com/x/.config?x=6b9c154b0c23aecf
dashboard link: https://syzkaller.appspot.com/bug?extid=22aec786ff221549b0ab
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+22aec7...@syzkaller.appspotmail.com
usb 5-1: ath9k_htc: USB layer deinitialized
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.6.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
__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
devres_release_all+0x48/0xc3 drivers/base/devres.c:528
device_release+0x39/0x200 drivers/base/core.c:1364
kobject_cleanup lib/kobject.c:693 [inline]
kobject_release lib/kobject.c:722 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x256/0x550 lib/kobject.c:739
put_device drivers/base/core.c:2599 [inline]
device_unregister+0x34/0xc0 drivers/base/core.c:2710
usb_remove_ep_devs+0x3e/0x80 drivers/usb/core/endpoint.c:215
usb_disconnect+0x4bb/0x900 drivers/usb/core/hub.c:2230
hub_port_connect drivers/usb/core/hub.c:5046 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5335 [inline]
port_event drivers/usb/core/hub.c:5481 [inline]
hub_event+0x1a1d/0x4300 drivers/usb/core/hub.c:5563
process_one_work+0x94b/0x1620 kernel/workqueue.c:2266
worker_thread+0x96/0xe20 kernel/workqueue.c:2412
kthread+0x318/0x420 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
usb 1-1: new high-speed USB device number 3 using dummy_hcd
usb 1-1: config 1 interface 0 altsetting 64 bulk endpoint 0x82 has invalid maxpacket 1024
usb 1-1: config 1 interface 0 has no altsetting 0
usb 1-1: New USB device found, idVendor=0525, idProduct=a4a8, bcdDevice= 0.40
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: syz
usb 1-1: Manufacturer: 됻䘰㷹ɶⵖ빚饑傩ﱬ촨즸ꇜ嘅ၧ侓剋条꠰挸渐茭塂磈늚갑ꮜࡡĘ딽쓘ꆿꐸ黀띑薛됂쟱뽏悔㘹⍸銟䝄㜓覼룹唨ᾥ낟쀆괧ᤝ옖袵ꌢಌ넏錦ၿ⦊ᓀ䂠欫矾톰岐㐂鑉翱讒鄕䕽ꃔ鎐범瀤韽猴蕕ꁇ뻇㖭벙ⵗ䫸ἂ麈䫜鼤忬刧跣庘烊灍
usb 1-1: SerialNumber: syz
usblp: can't set desired altsetting 64 on interface 0
usb 1-1: USB disconnect, device number 3
usb 1-1: new high-speed USB device number 4 using dummy_hcd
usb 1-1: config 1 interface 0 altsetting 64 bulk endpoint 0x82 has invalid maxpacket 1024
usb 1-1: config 1 interface 0 has no altsetting 0
usb 1-1: New USB device found, idVendor=0525, idProduct=a4a8, bcdDevice= 0.40
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: syz
usb 1-1: Manufacturer: 됻䘰㷹ɶⵖ빚饑傩ﱬ촨즸ꇜ嘅ၧ侓剋条꠰挸渐茭塂磈늚갑ꮜࡡĘ딽쓘ꆿꐸ黀띑薛됂쟱뽏悔㘹⍸銟䝄㜓覼룹唨ᾥ낟쀆괧ᤝ옖袵ꌢಌ넏錦ၿ⦊ᓀ䂠欫矾톰岐㐂鑉翱讒鄕䕽ꃔ鎐범瀤韽猴蕕ꁇ뻇㖭벙ⵗ䫸ἂ麈䫜鼤忬刧跣庘烊灍
usb 1-1: SerialNumber: syz
usblp: can't set desired altsetting 64 on interface 0
usb 1-1: USB disconnect, device number 4
usb 6-1: new high-speed USB device number 9 using dummy_hcd
usb 6-1: config 1 interface 0 altsetting 64 bulk endpoint 0x82 has invalid maxpacket 1024
usb 6-1: config 1 interface 0 has no altsetting 0
usb 6-1: New USB device found, idVendor=0525, idProduct=a4a8, bcdDevice= 0.40
usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 6-1: Product: syz
usb 6-1: Manufacturer: 됻䘰㷹ɶⵖ빚饑傩ﱬ촨즸ꇜ嘅ၧ侓剋条꠰挸渐茭塂磈늚갑ꮜࡡĘ딽쓘ꆿꐸ黀띑薛됂쟱뽏悔㘹⍸銟䝄㜓覼룹唨ᾥ낟쀆괧ᤝ옖袵ꌢಌ넏錦ၿ⦊ᓀ䂠欫矾톰岐㐂鑉翱讒鄕䕽ꃔ鎐범瀤韽猴蕕ꁇ뻇㖭벙ⵗ䫸ἂ麈䫜鼤忬刧跣庘烊灍
usb 6-1: SerialNumber: syz
usblp: can't set desired altsetting 64 on interface 0
usb 6-1: USB disconnect, device number 9
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syzbot
Crashes did not happen for a while, no reproducer and no activity.