bisecting fixing commit since 7f2c5eb458b8855655a19c44cd0043f7f83c595f
building syzkaller on 96dd36234d97bbf6b403f3a7f03cfc0296422879
testing commit 7f2c5eb458b8855655a19c44cd0043f7f83c595f with gcc (GCC) 8.4.1 20210217
kernel signature: 87c56161e46b97412ecf47b70c48a7bb3138f0bfcf85248fb70424e52dad0d73
run #0: crashed: general protection fault in __smc_diag_dump
run #1: crashed: general protection fault in __smc_diag_dump
run #2: crashed: KASAN: use-after-free Read in __smc_diag_dump
run #3: crashed: general protection fault in __smc_diag_dump
run #4: crashed: general protection fault in __smc_diag_dump
run #5: crashed: general protection fault in __smc_diag_dump
run #6: crashed: general protection fault in __smc_diag_dump
run #7: crashed: general protection fault in __smc_diag_dump
run #8: crashed: general protection fault in __smc_diag_dump
run #9: crashed: KASAN: use-after-free Read in __smc_diag_dump
run #10: crashed: general protection fault in __smc_diag_dump
run #11: crashed: general protection fault in __smc_diag_dump
run #12: crashed: general protection fault in __smc_diag_dump
run #13: crashed: general protection fault in __smc_diag_dump
run #14: crashed: KASAN: use-after-free Read in __smc_diag_dump
run #15: crashed: KASAN: use-after-free Read in __smc_diag_dump
run #16: crashed: KASAN: use-after-free Read in __smc_diag_dump
run #17: crashed: general protection fault in __smc_diag_dump
run #18: crashed: general protection fault in __smc_diag_dump
run #19: crashed: general protection fault in __smc_diag_dump
testing current HEAD 4e68c9b0763ff55eaa69d6e519f07515f1c9037b
testing commit 4e68c9b0763ff55eaa69d6e519f07515f1c9037b with gcc (GCC) 8.4.1 20210217
kernel signature: 728fa1ced8cd016df8674980445dc2f39f2f3ae53495033ea3564cf0c8c56cc6
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m12.404194711s (build: 19m0.855592498s, test: 6m32.344571969s)
the crash still happens on HEAD
commit msg: Linux 4.14.239
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1