bisecting fixing commit since 7d7d1c0ab3eb7c8d8f63a126535018007823b207 building syzkaller on 77e2b66864e69c17416614228723a1ebd3581ddc testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207 with gcc (GCC) 8.4.1 20210217 kernel signature: 50b35556e62d06046e9237e947b3909252bde10025e2530537f119002630aa7f run #0: crashed: kernel BUG in ext4_write_inline_data_end run #1: crashed: kernel BUG in __block_commit_write run #2: crashed: kernel BUG in ext4_write_inline_data_end run #3: crashed: kernel BUG in ext4_write_inline_data_end run #4: crashed: kernel BUG in __block_commit_write run #5: crashed: kernel BUG in __block_commit_write run #6: crashed: kernel BUG in __block_commit_write run #7: crashed: kernel BUG in __block_commit_write run #8: crashed: kernel BUG in ext4_write_inline_data_end run #9: crashed: kernel BUG in ext4_write_inline_data_end run #10: crashed: kernel BUG in ext4_write_inline_data_end run #11: crashed: kernel BUG in __block_commit_write run #12: crashed: kernel BUG in ext4_write_inline_data_end run #13: crashed: kernel BUG in ext4_write_inline_data_end run #14: crashed: kernel BUG in ext4_write_inline_data_end run #15: crashed: kernel BUG in corrupted run #16: crashed: kernel BUG in ext4_write_inline_data_end run #17: crashed: kernel BUG in ext4_write_inline_data_end run #18: crashed: kernel BUG in __block_commit_write run #19: crashed: kernel BUG in ext4_write_inline_data_end testing current HEAD cfb41ef9deb1e6572ac218ddfcec9567e5d1c101 testing commit cfb41ef9deb1e6572ac218ddfcec9567e5d1c101 with gcc (GCC) 8.4.1 20210217 kernel signature: 05128cbf0a941b923aba6de30da73f7244a66afbe93d8cf75ab3f49b949ed473 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 22m27.414919813s (build: 15m30.502028613s, test: 6m33.96677879s) the crash still happens on HEAD commit msg: Linux 4.14.237 crash: unregister_netdevice: waiting for DEV to become free unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout