bisecting fixing commit since 7f2c5eb458b8855655a19c44cd0043f7f83c595f building syzkaller on 96dd36234d97bbf6b403f3a7f03cfc0296422879 testing commit 7f2c5eb458b8855655a19c44cd0043f7f83c595f compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 5591a1f1e6986de819c53bee4b6ed06d869bdb38bf461d27586e1e761f8e1fbb run #0: crashed: general protection fault in __smc_diag_dump run #1: crashed: KASAN: use-after-free Read in __smc_diag_dump run #2: crashed: general protection fault in __smc_diag_dump run #3: crashed: general protection fault in __smc_diag_dump run #4: crashed: KASAN: use-after-free Read 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: general protection fault in __smc_diag_dump run #10: crashed: KASAN: use-after-free Read 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: KASAN: use-after-free Read 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: KASAN: use-after-free Read in __smc_diag_dump run #19: crashed: general protection fault in __smc_diag_dump testing current HEAD 8034e99d1a010a795b979582c0b2370584d8abf4 testing commit 8034e99d1a010a795b979582c0b2370584d8abf4 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 64e9171c490ffc9786e475f7b4ea5d46e31f42ce55b3fab23bd7d13d9738ff50 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 26m2.601697826s (build: 18m57.416633713s, test: 6m25.819560136s) the crash still happens on HEAD commit msg: Linux 4.14.266 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