bisecting fixing commit since cf256fbcbe347b7d0ff58fe2dfa382a156bd3694
building syzkaller on 805b5003de8c474f5d317a67f739597ebc78fcca
testing commit cf256fbcbe347b7d0ff58fe2dfa382a156bd3694
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a5b1913a553c2de82ab91570731da64adc26ab602c09238636817744b6821d3d
all runs: crashed: possible deadlock in sk_clone_lock
testing current HEAD 66722c42ec916e92cadda46316f8f6e3fdcaedc6
testing commit 66722c42ec916e92cadda46316f8f6e3fdcaedc6
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 06b64fd5d7cd41262c17de47bb1c122bc1355a6e49303e168e1b29fd2380b6fa
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 21m48.546899867s (build: 14m53.115009843s, test: 6m24.649844177s)
the crash still happens on HEAD
commit msg: Linux 4.14.256
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout