bisecting fixing commit since ddef1e8e3f6eb26034833b7255e3fa584d54a230
building syzkaller on b35fad31e9c2d4a970d051deff80ec7cc4c3e459
testing commit ddef1e8e3f6eb26034833b7255e3fa584d54a230
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: dd18f11972229a803ac24fa27b8f2d8c7b31c86351f694ee44ea4551a82b5b27
run #0: crashed: KASAN: use-after-free Read in tls_write_space
run #1: crashed: KASAN: use-after-free Read in tls_write_space
run #2: crashed: KASAN: use-after-free Read in tls_write_space
run #3: crashed: KASAN: use-after-free Read in tls_write_space
run #4: crashed: KASAN: use-after-free Read in tls_write_space
run #5: crashed: KASAN: use-after-free Read in tls_write_space
run #6: crashed: KASAN: use-after-free Read in tls_write_space
run #7: crashed: KASAN: use-after-free Read in tls_write_space
run #8: crashed: KASAN: use-after-free Read in tls_write_space
run #9: crashed: KASAN: use-after-free Read in tls_write_space
run #10: crashed: KASAN: use-after-free Read in tls_write_space
run #11: OK
run #12: OK
run #13: crashed: KASAN: use-after-free Read in tls_write_space
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
testing current HEAD f96eb53cbd76415edfba99c2cfa88567a885a428
testing commit f96eb53cbd76415edfba99c2cfa88567a885a428
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a118aa844bac87ba42ad710f8b1655be3b7f73753ac666cf237adfccfa0f3fce
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m41.424417723s (build: 15m20.0295261s, test: 14m36.704303739s)
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