bisecting fixing commit since cbfa1702aaf69b2311ea1b35e04f113c48368c67
building syzkaller on 1880b4a9f394370a7d1fcb5c1cfca0fa1127b463
testing commit cbfa1702aaf69b2311ea1b35e04f113c48368c67
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: d73412cd99eb8468dff39cee61bb8bd9ef0f51ec2916cc9b4b51baea1c3345fd
run #0: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #1: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #2: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #3: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #4: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #5: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #6: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #7: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #8: crashed: KASAN: use-after-free Read in bit_putcs
run #9: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #10: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #11: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #12: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #13: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #14: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #15: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #16: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #17: crashed: KASAN: use-after-free Read in bit_putcs
run #18: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
run #19: crashed: KASAN: slab-out-of-bounds Read in bit_putcs
testing current HEAD 424a46ea058e160ae6fdd0693092ba79da533f26
testing commit 424a46ea058e160ae6fdd0693092ba79da533f26
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 1bab4481ff0492aec126178478b460034367b1adf39057988b4f0e2e6483a949
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m56.646464186s (build: 16m10.213890176s, test: 6m25.708602325s)
the crash still happens on HEAD
commit msg: Linux 4.14.288
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout