bisecting fixing commit since f6e27dbb1afabcba436e346d6aa88a592a1436bb
building syzkaller on f3f7d9c8c3dfa1406a5f5a5f5f45a351f533139f
testing commit f6e27dbb1afabcba436e346d6aa88a592a1436bb
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: ed07ba6cdb5fc85fbd02cf509ba7d9bdfd7f4a844655e0add2aad2b629195b2e
run #0: crashed: KASAN: use-after-free Read in nr_release
run #1: crashed: KASAN: use-after-free Read in nr_release
run #2: crashed: KASAN: use-after-free Read in nr_release
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
reproducer seems to be flaky
testing current HEAD e3a56aaade89bc89f33baec11b12538fc22536e2
testing commit e3a56aaade89bc89f33baec11b12538fc22536e2
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 5fd3e64665e44018170cf9a8aba274b5b70bd684dd39293f595dd64b89f67a5f
all runs: crashed: unregister_netdevice: waiting for DEV to become free
Reproducer flagged being flaky
revisions tested: 2, total time: 37m17.237838581s (build: 23m39.633989128s, test: 12m15.23758304s)
the crash still happens on HEAD
commit msg: Linux 4.14.277
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1