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: crashed: KASAN: use-after-free Read in nr_release
run #4: crashed: KASAN: use-after-free Read in nr_release
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 eb045674aab31aa55a4f9aec27cce36e3d946a21
testing commit eb045674aab31aa55a4f9aec27cce36e3d946a21
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 56579ecf5411f0b114614f7b8801716829fe08b7cb90128659f2765456c93548
all runs: crashed: unregister_netdevice: waiting for DEV to become free
Reproducer flagged being flaky
revisions tested: 2, total time: 34m25.981303111s (build: 20m11.147723023s, test: 12m33.477746858s)
the crash still happens on HEAD
commit msg: Linux 4.14.272
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1