ci2 starts bisection 2023-02-28 18:50:43.353648454 +0000 UTC m=+77730.425608927
bisecting fixing commit since 14b58326976de6ef3998eefec1dd7f8b38b97a75
building syzkaller on 28ac5c9e93a44c3eb145195ffb55591be58ef510
ensuring issue is reproducible on original commit 14b58326976de6ef3998eefec1dd7f8b38b97a75

testing commit 14b58326976de6ef3998eefec1dd7f8b38b97a75 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: b94cee15025342b7123e1874b88fe7a01cf62f8c49d6156802f3372ed99010c1
run #0: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #1: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #2: crashed: KASAN: use-after-free Write in ex_handler_refcount
run #3: crashed: BUG: corrupted list in l2cap_chan_put
run #4: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #5: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #6: crashed: BUG: corrupted list in l2cap_chan_put
run #7: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #8: crashed: BUG: corrupted list in l2cap_chan_put
run #9: crashed: BUG: corrupted list in l2cap_chan_put
run #10: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #11: crashed: KASAN: use-after-free Read in l2cap_chan_put
run #12: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #13: crashed: KASAN: use-after-free Write in ex_handler_refcount
run #14: crashed: BUG: corrupted list in l2cap_chan_put
run #15: crashed: BUG: corrupted list in l2cap_chan_put
run #16: crashed: BUG: corrupted list in l2cap_chan_put
run #17: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #18: crashed: BUG: corrupted list in l2cap_chan_put
run #19: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
testing current HEAD 7878a41b6cc1ada4bb804eee96beb2c54322806c
testing commit 7878a41b6cc1ada4bb804eee96beb2c54322806c gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 212b7922af836a006d2b8a17b5fb647dae6623114095a6bb27f0af4ff7a8a554
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m27.743678286s (build: 14m47.186717992s, test: 13m19.410920868s)
the crash still happens on HEAD
commit msg: Linux 4.14.307
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1