syzbot

fatal error: fault
[signal SIGBUS: bus error code=0x2 addr=0x7fe7d8db1020 pc=0x47582a]

goroutine 3219 [running]:
runtime.throw(0x18ae776, 0x5)
	GOROOT/src/runtime/panic.go:1116 +0x72 fp=0xc0005de158 sp=0xc0005de128 pc=0x439472
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:717 +0x485 fp=0xc0005de188 sp=0xc0005de158 pc=0x4515c5
runtime.memmove(0x7fe7d8db1000, 0x7fe7d8d60000, 0x2000)
	src/runtime/memmove_amd64.s:365 +0x42a fp=0xc0005de190 sp=0xc0005de188 pc=0x47582a
runtime.slicecopy(0x7fe7d8db1000, 0x2000, 0x7fe7d8d60000, 0x2000, 0x1, 0x3cdb3000)
	GOROOT/src/runtime/slice.go:276 +0x125 fp=0xc0005de1d8 sp=0xc0005de190 pc=0x452da5
gvisor.dev/gvisor/pkg/safemem.Copy(0x7fe7d8db1000, 0x2000, 0x0, 0x7fe7d8d60000, 0x2000, 0x2000, 0x2000, 0xffffffffffffffff, 0x7fe7d8db1000)
	pkg/safemem/block_unsafe.go:199 +0x4e5 fp=0xc0005de2e0 sp=0xc0005de1d8 pc=0x626745
gvisor.dev/gvisor/pkg/safemem.CopySeq(0x7fe7d8db1000, 0xffffffffffffffff, 0x0, 0x2000, 0x7fe7d8d60000, 0xffffffffffffffff, 0x0, 0x2000, 0xc0005de498, 0x0, ...)
	pkg/safemem/seq_unsafe.go:281 +0x2a5 fp=0xc0005de3c0 sp=0xc0005de2e0 pc=0x62aa65
gvisor.dev/gvisor/pkg/safemem.(*BlockSeqReader).ReadToBlocks(0xc000b14aa0, 0x7fe7d8db1000, 0xffffffffffffffff, 0x0, 0x2000, 0xa6a800, 0xc0005de4d0, 0x40f371)
	pkg/safemem/io.go:86 +0xc8 fp=0xc0005de470 sp=0xc0005de3c0 pc=0x6272c8
gvisor.dev/gvisor/pkg/safemem.ReadFullToBlocks(0x1a5f940, 0xc000b14aa0, 0x7fe7d8db1000, 0xffffffffffffffff, 0x0, 0x2000, 0x0, 0x2000, 0x0)
	pkg/safemem/io.go:54 +0x10b fp=0xc0005de500 sp=0xc0005de470 pc=0x626f8b
gvisor.dev/gvisor/pkg/sentry/pgalloc.(*MemoryFile).AllocateAndFill(0xc000194000, 0x2000, 0x1, 0x1a5f940, 0xc000b14aa0, 0x7fe7d8d60000, 0xffffffffffffffff, 0x0, 0x2000)
	pkg/sentry/pgalloc/pgalloc.go:536 +0x14f fp=0xc0005de590 sp=0xc0005de500 pc=0xa451ef
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).getPMAsInternalLocked(0xc002d54000, 0x1a8e100, 0xc0004da000, 0xc002d54080, 0x3, 0x6d7000, 0x6d8000, 0xc002000100, 0x44b21c, 0x1570190, ...)
	pkg/sentry/mm/pma.go:349 +0x1418 fp=0xc0005deca8 sp=0xc0005de590 pc=0xb00a38
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).getPMAsLocked(0xc002d54000, 0x1a8e100, 0xc0004da000, 0xc002d54080, 0x3, 0x6d7000, 0x6d7c14, 0x100, 0xc002d54080, 0x4, ...)
	pkg/sentry/mm/pma.go:123 +0x108 fp=0xc0005ded78 sp=0xc0005deca8 pc=0xafed68
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).withInternalMappings(0xc002d54000, 0x1a8e100, 0xc0004da000, 0x6d7c10, 0x6d7c14, 0xc000000100, 0xc0005def60, 0xc00048b800, 0x47622c, 0xafcb71)
	pkg/sentry/mm/io.go:526 +0x28a fp=0xc0005deed8 sp=0xc0005ded78 pc=0xaf7cca
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).CopyOut(0xc002d54000, 0x1a8e100, 0xc0004da000, 0x6d7c10, 0xc0005df1b4, 0x4, 0x4, 0x200000, 0xc00000ef60, 0xc000d37dc0, ...)
	pkg/sentry/mm/io.go:119 +0x265 fp=0xc0005defa0 sp=0xc0005deed8 pc=0xaf4585
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyOutBytes(0xc000b14a80, 0x6d7c10, 0xc0005df1b4, 0x4, 0x4, 0x0, 0x0, 0x0)
	pkg/sentry/kernel/task_usermem.go:336 +0x1b9 fp=0xc0005df080 sp=0xc0005defa0 pc=0xd61a19
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadID).CopyOutN(0xc0005df1b4, 0x1a7dd00, 0xc000b14a80, 0x6d7c10, 0x4, 0xc0005df158, 0x40fcf8, 0x20)
	bazel-out/k8-fastbuild-ST-85f86a41aebae9b44e06a227fc2c34bde1094098ba6d32170f99a32414da6482/bin/pkg/sentry/kernel/kernel_abi_autogen_unsafe.go:63 +0xca fp=0xc0005df100 sp=0xc0005df080 pc=0xd7e86a
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadID).CopyOut(0xc0005df1b4, 0x1a7dd00, 0xc000b14a80, 0x6d7c10, 0xc000d37501, 0x0, 0x0)
	bazel-out/k8-fastbuild-ST-85f86a41aebae9b44e06a227fc2c34bde1094098ba6d32170f99a32414da6482/bin/pkg/sentry/kernel/kernel_abi_autogen_unsafe.go:73 +0x65 fp=0xc0005df168 sp=0xc0005df100 pc=0xd7e945
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc0004da000, 0xc0005df638, 0x0, 0x0, 0x0, 0x0)
	pkg/sentry/kernel/task_clone.go:358 +0x185d fp=0xc0005df5f8 sp=0xc0005df168 pc=0xd2d01d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0xc0004da000, 0x1200011, 0x0, 0x0, 0x6d7c10, 0x6d7940, 0xc0004da000, 0xc0ffffff9c, 0x475fac, 0xd24317)
	pkg/sentry/syscalls/linux/sys_thread.go:227 +0x17a fp=0xc0005df6b0 sp=0xc0005df5f8 pc=0xe1853a
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc0004da000, 0x1200011, 0x0, 0x0, 0x6d7c10, 0x6d7940, 0x5, 0xc000045000, 0xc00022b7a8, 0x44351c, ...)
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:34 +0x85 fp=0xc0005df730 sp=0xc0005df6b0 pc=0xdda2e5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0004da000, 0x38, 0x1200011, 0x0, 0x0, 0x6d7c10, 0x6d7940, 0x5, 0x0, 0x0, ...)
	pkg/sentry/kernel/task_syscall.go:104 +0x453 fp=0xc0005df9d0 sp=0xc0005df730 pc=0xd5b3d3
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0004da000, 0x38, 0x1200011, 0x0, 0x0, 0x6d7c10, 0x6d7940, 0x5, 0x408638, 0xc0004da8df)
	pkg/sentry/kernel/task_syscall.go:239 +0xba fp=0xc0005dfab0 sp=0xc0005df9d0 pc=0xd5cb5a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0004da000, 0x38, 0x1200011, 0x0, 0x0, 0x6d7c10, 0x6d7940, 0x5, 0x136c92b, 0x2cf75d4)
	pkg/sentry/kernel/task_syscall.go:199 +0x10f fp=0xc0005dfb60 sp=0xc0005dfab0 pc=0xd5c46f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0004da000, 0x2, 0xc0004da000)
	pkg/sentry/kernel/task_syscall.go:174 +0x1ea fp=0xc0005dfca0 sp=0xc0005dfb60 pc=0xd5bc0a
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0004da000, 0x1a600c0, 0x0)
	pkg/sentry/kernel/task_run.go:282 +0x12a7 fp=0xc0005dfed8 sp=0xc0005dfca0 pc=0xd47587
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0004da000, 0x1c)
	pkg/sentry/kernel/task_run.go:97 +0x398 fp=0xc0005dffd0 sp=0xc0005dfed8 pc=0xd456b8
runtime.goexit()
	src/runtime/asm_amd64.s:1374 +0x1 fp=0xc0005dffd8 sp=0xc0005dffd0 pc=0x4745e1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:323 +0x1a5