bisecting fixing commit since 2b79150141611d3c6e1b55d4e70f49602482f0b8
building syzkaller on a6e3ac3bf259067ffd6e50fe8e4a158f097c1da5
testing commit 2b79150141611d3c6e1b55d4e70f49602482f0b8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 6c960da514b243e4ae1034dfbb8b3b25b8766209bea13c1381cca914d24ddcc2
run #0: crashed: possible deadlock in tty_port_close_start
run #1: crashed: possible deadlock in tty_port_close_start
run #2: crashed: possible deadlock in console_unlock
run #3: crashed: possible deadlock in console_unlock
run #4: crashed: possible deadlock in tty_port_close_start
run #5: crashed: possible deadlock in console_unlock
run #6: crashed: possible deadlock in console_unlock
run #7: crashed: possible deadlock in console_unlock
run #8: crashed: possible deadlock in console_unlock
run #9: crashed: possible deadlock in console_unlock
run #10: crashed: possible deadlock in console_unlock
run #11: crashed: possible deadlock in console_unlock
run #12: crashed: possible deadlock in tty_port_close_start
run #13: crashed: possible deadlock in console_unlock
run #14: crashed: possible deadlock in tty_port_close_start
run #15: crashed: possible deadlock in tty_port_close_start
run #16: crashed: possible deadlock in tty_port_close_start
run #17: crashed: possible deadlock in tty_port_close_start
run #18: crashed: possible deadlock in console_unlock
run #19: crashed: possible deadlock in tty_port_close_start
testing current HEAD bfdef05c8da46b022172695aa493cff7ac667a4b
testing commit bfdef05c8da46b022172695aa493cff7ac667a4b
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 48504a8f06ec82a618adaaf2091ec0a8b847e1c50de1fec6986f5a2104dbd557
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 25m2.581676788s (build: 17m35.463774598s, test: 6m45.131438645s)
the crash still happens on HEAD
commit msg: Linux 4.14.261
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout