bisecting fixing commit since 9a95f25269bd9257ab9fba7bb14355d50b5f39ec
building syzkaller on c8e81ce4c7e3b59e7c83c6fab56c217916f3b3b6
testing commit 9a95f25269bd9257ab9fba7bb14355d50b5f39ec
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: df4f7cf6cb6cc1ba813fc98e6153100fa196be2f7e543c79f1cb4604cd9af7ec
run #0: crashed: BUG: unable to handle kernel
run #1: crashed: BUG: unable to handle kernel
run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in blk_mq_map_swqueue
run #3: crashed: BUG: unable to handle kernel
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in blk_mq_map_swqueue
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in blk_mq_map_swqueue
run #6: crashed: BUG: unable to handle kernel
run #7: crashed: BUG: unable to handle kernel
run #8: crashed: BUG: unable to handle kernel
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in blk_mq_map_swqueue
run #10: crashed: BUG: unable to handle kernel
run #11: crashed: BUG: unable to handle kernel
run #12: crashed: BUG: unable to handle kernel NULL pointer dereference in blk_mq_map_swqueue
run #13: crashed: BUG: unable to handle kernel
run #14: crashed: BUG: unable to handle kernel NULL pointer dereference in blk_mq_map_swqueue
run #15: crashed: BUG: unable to handle kernel
run #16: crashed: BUG: unable to handle kernel
run #17: crashed: BUG: unable to handle kernel
run #18: crashed: BUG: unable to handle kernel NULL pointer dereference in blk_mq_map_swqueue
run #19: crashed: BUG: unable to handle kernel
testing current HEAD 8ee0807eedf3bc60c8a47a7dd95387102bcfd063
testing commit 8ee0807eedf3bc60c8a47a7dd95387102bcfd063
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 10b7e2881d17c27bf6ee565d98c4ee87a66f7587a3ba8b6692887764600b07db
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m17.560342217s (build: 22m32.067208097s, test: 6m23.361400635s)
the crash still happens on HEAD
commit msg: Linux 4.14.259
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