I0717 23:17:19.230122 1 x:0] Watchdog starting loop, tasks: 6, discount: 0s I0717 23:17:48.706067 4735 x:0] *************************** I0717 23:17:48.706274 4735 x:0] Args: [/syzkaller/managers/kvm-direct-sandbox/current/image -root /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root -watchdog-action=panic -network=none -platform=kvm -file-access=direct -network=sandbox exec -user=0:0 -cap CAP_CHOWN -cap CAP_DAC_OVERRIDE -cap CAP_DAC_READ_SEARCH -cap CAP_FOWNER -cap CAP_FSETID -cap CAP_KILL -cap CAP_SETGID -cap CAP_SETUID -cap CAP_SETPCAP -cap CAP_LINUX_IMMUTABLE -cap CAP_NET_BIND_SERVICE -cap CAP_NET_BROADCAST -cap CAP_NET_ADMIN -cap CAP_NET_RAW -cap CAP_IPC_LOCK -cap CAP_IPC_OWNER -cap CAP_SYS_MODULE -cap CAP_SYS_RAWIO -cap CAP_SYS_CHROOT -cap CAP_SYS_PTRACE -cap CAP_SYS_PACCT -cap CAP_SYS_ADMIN -cap CAP_SYS_BOOT -cap CAP_SYS_NICE -cap CAP_SYS_RESOURCE -cap CAP_SYS_TIME -cap CAP_SYS_TTY_CONFIG -cap CAP_MKNOD -cap CAP_LEASE -cap CAP_AUDIT_WRITE -cap CAP_AUDIT_CONTROL -cap CAP_SETFCAP -cap CAP_MAC_OVERRIDE -cap CAP_MAC_ADMIN -cap CAP_SYSLOG -cap CAP_WAKE_ALARM -cap CAP_BLOCK_SUSPEND -cap CAP_AUDIT_READ ci-gvisor-kvm-direct-sandbox-4 /syz-executor953824819] I0717 23:17:48.706454 4735 x:0] Git Revision: 29e00c943a61dfcfd4ac8d3f6f526eab641c44a6 I0717 23:17:48.706536 4735 x:0] PID: 4735 I0717 23:17:48.706631 4735 x:0] UID: 0, GID: 0 I0717 23:17:48.706691 4735 x:0] Configuration: I0717 23:17:48.706709 4735 x:0] RootDir: /syzkaller/managers/kvm-direct-sandbox/workdir/gvisor_root I0717 23:17:48.706713 4735 x:0] Platform: kvm I0717 23:17:48.706729 4735 x:0] FileAccess: direct, overlay: false I0717 23:17:48.706743 4735 x:0] Network: sandbox, logging: false I0717 23:17:48.706751 4735 x:0] Strace: false, max size: 1024, syscalls: [] I0717 23:17:48.706755 4735 x:0] *************************** I0717 23:17:48.708729 1 x:0] EXEC: [/syz-executor953824819] executing program W0717 23:17:53.502783 1 x:0] Invalid request partialResult true and err (type *errors.errorString) short write for sendfile operation on "/tmp/bus", *tmpfs.regularFileOperations: goroutine 184 [running]: gvisor.googlesource.com/gvisor/pkg/log.Stacks(0x0, 0x7f90d16d56c8, 0x0, 0x4) pkg/log/log.go:259 +0xc1 gvisor.googlesource.com/gvisor/pkg/log.Traceback(0xbe20a8, 0x50, 0xc420293920, 0x6, 0x6) pkg/log/log.go:274 +0x2a gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.handleIOError(0xc4205e8900, 0x20000001, 0xc72960, 0xc4200f6040, 0xc74860, 0xc6e848, 0xbc2be6, 0x8, 0xc42079e000, 0x8aa1d8, ...) pkg/sentry/syscalls/linux/error.go:114 +0x2fd gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Sendfile(0xc4205e8900, 0x3, 0x4, 0x20000040, 0x8000fffffffe, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/sys_file.go:2025 +0x4ec gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc4205e8900, 0x28, 0x3, 0x4, 0x20000040, 0x8000fffffffe, 0x0, 0x0, 0xc420799cc0, 0xbbf200, ...) pkg/sentry/kernel/task_syscall.go:162 +0x307 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc4205e8900, 0x28, 0x3, 0x4, 0x20000040, 0x8000fffffffe, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:278 +0x62 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc4205e8900, 0x28, 0x3, 0x4, 0x20000040, 0x8000fffffffe, 0x0, 0x0, 0xc420496400, 0xc420799e18) pkg/sentry/kernel/task_syscall.go:241 +0x91 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc4205e8900, 0x2, 0xc420456d80) pkg/sentry/kernel/task_syscall.go:216 +0x10c gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc4205e8900, 0xc730a0, 0x0) pkg/sentry/kernel/task_run.go:217 +0xe56 gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc4205e8900, 0x8) pkg/sentry/kernel/task_run.go:95 +0x174 created by gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:258 +0x100 I0717 23:17:53.910441 4735 x:0] Exiting with status: 0