bisecting fixing commit since cbfa1702aaf69b2311ea1b35e04f113c48368c67 building syzkaller on a9767fb2a6393444e871a02e79a14ccfa2aef52b testing commit cbfa1702aaf69b2311ea1b35e04f113c48368c67 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 2e444476b2896092b97c64ead200cff49489b2979b96c923391677308d25322f run #0: crashed: kernel BUG in remove_inode_page run #1: crashed: kernel BUG in remove_inode_page run #2: crashed: kernel BUG in remove_inode_page run #3: crashed: kernel BUG in remove_inode_page run #4: crashed: kernel BUG in remove_inode_page run #5: crashed: kernel BUG in remove_inode_page run #6: crashed: kernel BUG in remove_inode_page run #7: crashed: kernel BUG in corrupted run #8: crashed: kernel BUG in remove_inode_page run #9: crashed: kernel BUG in remove_inode_page run #10: crashed: kernel BUG in remove_inode_page run #11: crashed: kernel BUG in remove_inode_page run #12: crashed: kernel BUG in remove_inode_page run #13: crashed: kernel BUG in remove_inode_page run #14: crashed: kernel BUG in remove_inode_page run #15: crashed: kernel BUG in remove_inode_page run #16: crashed: kernel BUG in remove_inode_page run #17: crashed: kernel BUG in remove_inode_page run #18: crashed: kernel BUG in corrupted run #19: crashed: kernel BUG in remove_inode_page testing current HEAD bfdef05c8da46b022172695aa493cff7ac667a4b testing commit bfdef05c8da46b022172695aa493cff7ac667a4b compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 3b2bc7289b95c5ad4819a76d7c2f66b3bb3c1f5fdbf2ed460ef7ae5f0f69dec2 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 28m40.017215372s (build: 21m31.076319222s, test: 6m32.020256269s) the crash still happens on HEAD commit msg: Linux 4.14.261 crash: unregister_netdevice: waiting for DEV to become free unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout