bisecting fixing commit since 2c8a3fceddf0dd87f278e7a5e01350f86f844b1c building syzkaller on 98682e5e2aefc9aad61354f4f3ac93be96002a2a testing commit 2c8a3fceddf0dd87f278e7a5e01350f86f844b1c compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: d4a934c2b7c6ca0cb47972855f971d3a8822f3c793c067f2279a51921232d240 run #0: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #1: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #2: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #3: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #4: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #5: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #6: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #7: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #8: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #9: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #10: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #11: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #12: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #13: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #14: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #15: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #16: crashed: kernel panic: panic_on_warn set run #17: crashed: KASAN: use-after-free Read in f2fs_evict_inode run #18: basic kernel testing failed: failed to copy binary to VM: timedout after 1m0s ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor2329621458" "root@10.128.10.58:./syz-executor2329621458"] run #19: basic kernel testing failed: failed to copy binary to VM: timedout after 1m0s ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor4033273564" "root@10.128.15.196:./syz-executor4033273564"] testing current HEAD 501eec4f9e138b958fc7438e7a745c0d6a7c68b3 testing commit 501eec4f9e138b958fc7438e7a745c0d6a7c68b3 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: f70e56c3053a1587a57fa7cfae5493f9114346a249378af7ac9cd940f5f8bcdc all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 31m39.960685654s (build: 18m16.828605034s, test: 12m44.621985346s) the crash still happens on HEAD commit msg: Linux 4.14.281 crash: unregister_netdevice: waiting for DEV to become free Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout