bisecting fixing commit since 458a534cac0c808fce164cc961f8384ffc8c455e
building syzkaller on ac7ca78e73a05a08918dd014f40739b3bbc26ea6
testing commit 458a534cac0c808fce164cc961f8384ffc8c455e
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 42bf36ad63b8d87cd532539497252b9da1ad8a52aacb416bd96705b95684e630
all runs: crashed: KASAN: use-after-free Read in radix_tree_next_chunk
testing current HEAD c9fcc1545c3bb19f4e04b1c82bf5c2856fef39bd
testing commit c9fcc1545c3bb19f4e04b1c82bf5c2856fef39bd
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 41947c1ac9e471cd36a2a16f3b5e273491376f8dcfe96b141493c13812c21a18
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 28m31.679806758s (build: 21m20.657910284s, test: 6m29.387324596s)
the crash still happens on HEAD
commit msg: Linux 4.14.270
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci4 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 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout