bisecting fixing commit since cbfa1702aaf69b2311ea1b35e04f113c48368c67
building syzkaller on 4a77ae0bdc5cd75ebe88ce7c896aae6bbf457a29
testing commit cbfa1702aaf69b2311ea1b35e04f113c48368c67
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 86230dd94a6dd46d86de2e9481c21f1836df9b855a3b6ce7c7e2431fcd8edd3c
run #0: crashed: KASAN: use-after-free Read in vgem_gem_dumb_create
run #1: crashed: KASAN: use-after-free Read in vgem_gem_dumb_create
run #2: crashed: KASAN: use-after-free Read in vgem_gem_dumb_create
run #3: crashed: KASAN: use-after-free Read in vgem_gem_dumb_create
run #4: crashed: KASAN: use-after-free Read in vgem_gem_dumb_create
run #5: crashed: KASAN: use-after-free Read in vgem_gem_dumb_create
run #6: crashed: KASAN: use-after-free Read in vgem_gem_dumb_create
run #7: crashed: KASAN: use-after-free Read in vgem_gem_dumb_create
run #8: crashed: KASAN: use-after-free Read in vgem_gem_dumb_create
run #9: crashed: KASAN: use-after-free Read in vgem_gem_dumb_create
run #10: crashed: general protection fault in vgem_fence_attach_ioctl
run #11: crashed: WARNING in mutex_destroy
run #12: crashed: general protection fault in vgem_fence_attach_ioctl
run #13: crashed: general protection fault in vgem_fence_attach_ioctl
run #14: crashed: general protection fault in vgem_fence_attach_ioctl
run #15: crashed: general protection fault in vgem_fence_attach_ioctl
run #16: OK
run #17: OK
run #18: OK
run #19: OK
testing current HEAD 162b95d01320370b80cb2d5724cea4ae538ac740
testing commit 162b95d01320370b80cb2d5724cea4ae538ac740
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 09bdd2bcd9682bf29144af3b4d1b5313a5ad33031f485e241e1a5990e0aa3121
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 31m35.959780603s (build: 16m51.431073569s, test: 14m20.686101517s)
the crash still happens on HEAD
commit msg: Linux 4.14.244
crash: unregister_netdevice: waiting for DEV to become free
can: request_module (can-proto-0) failed.
can: request_module (can-proto-0) failed.
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout