ci2 starts bisection 2023-01-27 13:29:50.031509882 +0000 UTC m=+344481.012093297
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: eb2b38cc9799aa46f01daa8ad32380085bd08d149615a40f05a7538e9ded89b8
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: BUG: corrupted list in l2cap_chan_put
run #3: crashed: KASAN: use-after-free Write in ex_handler_refcount
run #4: crashed: BUG: corrupted list in l2cap_chan_put
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: KASAN: use-after-free Read in l2cap_sock_shutdown
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_sock_shutdown
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: KASAN: use-after-free Read in l2cap_sock_shutdown
run #16: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #17: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #18: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
run #19: crashed: KASAN: use-after-free Read in l2cap_sock_shutdown
testing current HEAD 3949d16100044eeb6723eca03b1038b469fb9ae8
testing commit 3949d16100044eeb6723eca03b1038b469fb9ae8 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: f65b7b2622b2c2346cd747df7638274db03962b3da1de9faf90076cd716fb623
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 33m51.555358278s (build: 17m53.518518902s, test: 13m55.788582485s)
the crash still happens on HEAD
commit msg: Linux 4.14.304
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1