bisecting fixing commit since 458a534cac0c808fce164cc961f8384ffc8c455e
building syzkaller on ac7ca78e73a05a08918dd014f40739b3bbc26ea6
testing commit 458a534cac0c808fce164cc961f8384ffc8c455e
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 11735ae3de96c9e1a2355dc51b8345067ac88d9471a49647dd84fdc0092abc4d
all runs: crashed: KASAN: use-after-free Read in radix_tree_next_chunk
testing current HEAD ed99bf0e81b558df39f7db2fa96d0228be4198c6
testing commit ed99bf0e81b558df39f7db2fa96d0228be4198c6
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 59bde015dd0fe62f868c1d80669f8a74fcb1b134faa1fbb4389d08782ecbd4e3
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 27m48.689369588s (build: 17m50.347614749s, test: 9m31.6909665s)
the crash still happens on HEAD
commit msg: Linux 4.14.250
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout