bisecting fixing commit since cbfa1702aaf69b2311ea1b35e04f113c48368c67
building syzkaller on 1880b4a9f394370a7d1fcb5c1cfca0fa1127b463
testing commit cbfa1702aaf69b2311ea1b35e04f113c48368c67
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 236d18178581356d9a7c2ad85665f18364ac21bfbe6009239933fa1ef561d2a8
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: slab-out-of-bounds 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 b8f3be299d5176348b15cc59d55b85faa3dece68
testing commit b8f3be299d5176348b15cc59d55b85faa3dece68
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 1f71b1ddfe2b2c5b20a1595513ba19d9277da8599af4b92f05f320d983011eb9
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m26.462401924s (build: 18m19.152644383s, test: 6m25.127343024s)
the crash still happens on HEAD
commit msg: Linux 4.14.282
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout