bisecting fixing commit since b98aebd298246df37b472c52a2ee1023256d02e3
building syzkaller on 5ea87a6638e52a94361b26b8576a1605585815fb
testing commit b98aebd298246df37b472c52a2ee1023256d02e3
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: de45da7359a2c51e8bba283b4673620246149922e788a89ea834a5fcb1a4524c
run #0: crashed: general protection fault in kernfs_kill_sb
run #1: crashed: general protection fault in kernfs_kill_sb
run #2: crashed: general protection fault in kernfs_kill_sb
run #3: crashed: general protection fault in kernfs_kill_sb
run #4: crashed: general protection fault in kernfs_kill_sb
run #5: crashed: general protection fault in kernfs_kill_sb
run #6: crashed: general protection fault in kernfs_kill_sb
run #7: crashed: general protection fault in kernfs_kill_sb
run #8: crashed: general protection fault in kernfs_kill_sb
run #9: crashed: general protection fault in kernfs_kill_sb
run #10: crashed: general protection fault in kernfs_kill_sb
run #11: crashed: general protection fault in kernfs_kill_sb
run #12: crashed: general protection fault in kernfs_kill_sb
run #13: crashed: general protection fault in kernfs_kill_sb
run #14: crashed: general protection fault in corrupted
run #15: crashed: general protection fault in corrupted
run #16: crashed: general protection fault in kernfs_kill_sb
run #17: crashed: general protection fault in kernfs_kill_sb
run #18: crashed: general protection fault in kernfs_kill_sb
run #19: crashed: general protection fault in kernfs_kill_sb
testing current HEAD f96eb53cbd76415edfba99c2cfa88567a885a428
testing commit f96eb53cbd76415edfba99c2cfa88567a885a428
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 49b9651103f680a42cbda43f877b54b67f3710452d398c0a727367d811b744c7
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 27m28.783956672s (build: 20m16.076987178s, test: 6m28.223324938s)
the crash still happens on HEAD
commit msg: Linux 4.14.246
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1