From: syzbot <syzbot+788733b16e87faa63deb@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org, matheus.aalmeida@inf.ufrgs.br,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [input?] general protection fault in input_ff_flush
Date: Fri, 16 Oct 2026 14:14:02 -0700 [thread overview]
Message-ID: <6ad2939a.7952420f.283480.0353.GAE@google.com> (raw)
In-Reply-To: <d6cdf0eebe5e351e4c4dbbbf8ffea867@inf.ufrgs.br>
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
general protection fault in input_ff_flush
Warning: Permanently added '10.128.1.14' (ED25519) to the list of known hosts.
[*] Reproducer for general protection fault in input_ff_flush
[+] opendir /sys/class/udc successful.
[+] closedir /sys/class/udc successful.
[+] Using UDC device: dummy_udc.2
[+] open /dev/raw-gadget successful (fd=3).
[+] USB_RAW_IOCTL_INIT successful.
[+] pthread_create ep0_loop successful.
[+] pthread_create ep_io_loop successful.
[+] USB_RAW_IOCTL_RUN successful.
[*] Waiting for Logitech G920 to enumerate and bind...
[+] Found Logitech G920 device: 0003:046D:C262.0001
[*] Starting deterministic fault injection rebind loop (1..100)...
[+] fail_n=1: bind succeeded, scanning /dev/input to trigger bug...
[*] Opened /dev/input/event4, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event4.
[*] Opened /dev/input/event3, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event3.
[*] Opened /dev/input/event2, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event2.
[*] Opened /dev/input/event1, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event1.
[*] Opened /dev/input/event0, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event0.
[+] fail_n=6: bind succeeded, scanning /dev/input to trigger bug...
[*] Opened /dev/input/event4, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event4.
[*] Opened /dev/input/event3, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event3.
[*] Opened /dev/input/event2, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event2.
[*] Opened /dev/input/event1, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event1.
[*] Opened /dev/input/event0, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event0.
[+] fail_n=7: bind succeeded, scanning /dev/input to trigger bug...
[*] Opened /dev/input/event4, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event4.
[*] Opened /dev/input/event3, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event3.
[*] Opened /dev/input/event2, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event2.
[*] Opened /dev/input/event1, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event1.
[*] Opened /dev/input/event0, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event0.
[*] Tested fail_n=10
[+] fail_n=12: bind succeeded, scanning /dev/input to trigger bug...
[*] Opened /dev/input/event4, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event4.
[*] Opened /dev/input/event3, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event3.
[*] Opened /dev/input/event2, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event2.
[*] Opened /dev/input/event1, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event1.
[*] Opened /dev/input/event0, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event0.
[*] Tested fail_n=20
[*] Tested fail_n=30
[+] fail_n=31: bind succeeded, scanning /dev/input to trigger bug...
[*] Opened /dev/input/event4, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event4.
[*] Opened /dev/input/event3, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event3.
[*] Opened /dev/input/event2, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event2.
[*] Opened /dev/input/event1, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event1.
[*] Opened /dev/input/event0, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event0.
[+] fail_n=35: bind succeeded, scanning /dev/input to trigger bug...
[*] Opened /dev/input/event3, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event3.
[*] Opened /dev/input/event2, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event2.
[*] Opened /dev/input/event1, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event1.
[*] Opened /dev/input/event0, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event0.
[+] fail_n=36: bind succeeded, scanning /dev/input to trigger bug...
[*] Opened /dev/input/event3, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event3.
[*] Opened /dev/input/event2, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event2.
[*] Opened /dev/input/event1, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event1.
[*] Opened /dev/input/event0, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event0.
[+] fail_n=37: bind succeeded, scanning /dev/input to trigger bug...
[*] Opened /dev/input/event4, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event4.
[*] Opened /dev/input/event3, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event3.
[*] Opened /dev/input/event2, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event2.
[*] Opened /dev/input/event1, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event1.
[*] Opened /dev/input/event0, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event0.
[+] fail_n=38: bind succeeded, scanning /dev/input to trigger bug...
[*] Opened /dev/input/event4, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event4.
[*] Opened /dev/input/event3, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event3.
[*] Opened /dev/input/event2, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event2.
[*] Opened /dev/input/event1, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event1.
[*] Opened /dev/input/event0, closing now (should crash if ff teardown leaked flush)...
[*] Closed /dev/input/event0.
Tested on:
commit: 70dd4ee7 Merge tag 'pinctrl-v7.3-3' of git://git.kerne..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10fa313e580000
kernel config: https://syzkaller.appspot.com/x/.config?x=c4b098695335c89f
dashboard link: https://syzkaller.appspot.com/bug?extid=788733b16e87faa63deb
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=10df6fd1580000
next parent reply other threads:[~2026-10-16 21:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <d6cdf0eebe5e351e4c4dbbbf8ffea867@inf.ufrgs.br>
2026-10-16 21:14 ` syzbot [this message]
2026-10-16 18:23 syzbot
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