ci2 starts bisection 2022-11-19 07:19:39.886079306 +0000 UTC m=+101548.212816774
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: e2ccfc640b26fc47ab2f0c2a4cf01b3e9ab598ba373d7f88f6182dbe3e0f0664
run #0: crashed: BUG: corrupted list in l2cap_chan_put
run #1: crashed: BUG: corrupted list in l2cap_chan_put
run #2: crashed: BUG: corrupted list in l2cap_chan_put
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: KASAN: use-after-free Read in l2cap_sock_shutdown
run #7: crashed: BUG: corrupted list in l2cap_chan_put
run #8: crashed: BUG: corrupted list in l2cap_chan_put
run #9: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #10: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #11: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #12: crashed: BUG: corrupted list in l2cap_chan_put
run #13: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
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: BUG: corrupted list in l2cap_chan_put
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 e911713e40ca73142b455ccfde2d7c0b0984c008
testing commit e911713e40ca73142b455ccfde2d7c0b0984c008 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 17588250bcbf8fdfb000a827e8eca2272b63db869d07e9d9126d1ef14f143540
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m49.316001733s (build: 13m30.154913869s, test: 12m50.331546172s)
the crash still happens on HEAD
commit msg: Linux 4.14.299
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1