bisecting fixing commit since 7d7d1c0ab3eb7c8d8f63a126535018007823b207 building syzkaller on 77e2b66864e69c17416614228723a1ebd3581ddc testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 6ddd9bb5ef4208acd354c55e6e0007345b198701d880675f85d2942be24a3ee2 run #0: crashed: kernel BUG in __block_commit_write run #1: crashed: kernel BUG in ext4_write_inline_data_end 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 ext4_write_inline_data_end run #5: crashed: kernel BUG in __block_commit_write run #6: crashed: kernel BUG in ext4_write_inline_data_end 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 ext4_write_inline_data_end 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 ext4_write_inline_data_end run #16: crashed: kernel BUG in ext4_write_inline_data_end run #17: crashed: kernel BUG in __block_commit_write run #18: crashed: kernel BUG in corrupted run #19: crashed: kernel BUG in ext4_write_inline_data_end testing current HEAD 8ee0807eedf3bc60c8a47a7dd95387102bcfd063 testing commit 8ee0807eedf3bc60c8a47a7dd95387102bcfd063 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 4a1061a7698e85f032500c75de7a95ccfb2384ce419717ea5ecc66a999fce63f all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 25m21.57713191s (build: 17m39.692240245s, test: 7m16.166281926s) the crash still happens on HEAD commit msg: Linux 4.14.259 crash: unregister_netdevice: waiting for DEV to become free unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci5 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: hci5 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout