ci2 starts bisection 2023-03-01 10:10:31.846040969 +0000 UTC m=+9031.450203041
bisecting fixing commit since 14b58326976de6ef3998eefec1dd7f8b38b97a75
building syzkaller on ff51e5229e0ee846d2fd687cb0dbca13de758c66
ensuring issue is reproducible on original commit 14b58326976de6ef3998eefec1dd7f8b38b97a75

testing commit 14b58326976de6ef3998eefec1dd7f8b38b97a75 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a05b1571c2a720dc617691dbb639ee211acef289734759046f58bfa409fbeb96
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: BUG: corrupted list in l2cap_chan_put
run #5: crashed: BUG: corrupted list in l2cap_chan_put
run #6: crashed: BUG: corrupted list in l2cap_chan_put
run #7: crashed: BUG: corrupted list in l2cap_chan_put
run #8: crashed: BUG: corrupted list in l2cap_chan_put
run #9: crashed: BUG: corrupted list in l2cap_chan_put
run #10: crashed: BUG: corrupted list in l2cap_chan_put
run #11: crashed: BUG: corrupted list in l2cap_chan_put
run #12: crashed: BUG: corrupted list in l2cap_chan_put
run #13: crashed: BUG: corrupted list in l2cap_chan_put
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_chan_put
testing current HEAD 7878a41b6cc1ada4bb804eee96beb2c54322806c
testing commit 7878a41b6cc1ada4bb804eee96beb2c54322806c gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 1b72ca2fd12fb7dbe57b7606b0537473a922a8a83776217493ddf985f5a4c7b5
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 55m59.072726466s (build: 40m22.099708811s, test: 12m24.641105023s)
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