bisecting fixing commit since 7d7d1c0ab3eb7c8d8f63a126535018007823b207 building syzkaller on ad61f3714f0a5e8f7ce062d54f310df1f5e0d351 testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: e243b738a03cb5c234986e95734dee0dd95b1397235ee8c816db7645f00b10ae run #0: crashed: SYZFAIL: mmap of input file failed run #1: crashed: SYZFAIL: mmap of input file failed run #2: crashed: SYZFAIL: mmap of input file failed run #3: crashed: SYZFAIL: mmap of input file failed run #4: crashed: SYZFAIL: mmap of input file failed run #5: crashed: SYZFAIL: mmap of input file failed run #6: crashed: SYZFAIL: mmap of input file failed run #7: crashed: SYZFAIL: mmap of input file failed run #8: crashed: SYZFAIL: mmap of input file failed run #9: crashed: SYZFAIL: mmap of input file failed run #10: crashed: SYZFAIL: mmap of input file failed run #11: crashed: SYZFAIL: mmap of input file failed run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK testing current HEAD 424a46ea058e160ae6fdd0693092ba79da533f26 testing commit 424a46ea058e160ae6fdd0693092ba79da533f26 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: b1da3dd19601fbba92db24bd35e1c4a29f37b8e586439d74ee23c398743c596d all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 26m51.70881117s (build: 14m23.943471164s, test: 12m3.924366143s) the crash still happens on HEAD commit msg: Linux 4.14.288 crash: unregister_netdevice: waiting for DEV to become free Bluetooth: hci0 command 0x0409 tx timeout unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout