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Re: ASan: Unauthorized Access in uiomove
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
| / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | +1520576/ - \ | / - [1518792\ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | +991434/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | ]=0x3665890
/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | Loading /var/db/entropy-file
[ 1.0000000] cpu_rng: rdrand/rdseed
[ 1.0000000] entropy: ready
[ 1.0000000] entropy: entering seed from bootloader with 256 bits of entropy
[ 1.0000000] ksyms: checking .text
[ 1.0000000] ksyms: checking .rodata.hotpatch
[ 1.0000000] ksyms: checking .rodata
[ 1.0000000] ksyms: checking .eh_frame
[ 1.0000000] ksyms: checking link_set_x86_hotpatch_descriptors
[ 1.0000000] ksyms: checking link_set_sdt_argtypes_set
[ 1.0000000] ksyms: checking link_set_sdt_probes_set
[ 1.0000000] ksyms: checking link_set_sdt_providers_set
[ 1.0000000] ksyms: checking link_set_modules
[ 1.0000000] ksyms: checking link_set_sysctl_funcs
[ 1.0000000] ksyms: checking link_set_acpi_device_calls
[ 1.0000000] ksyms: checking link_set_evcnts
[ 1.0000000] ksyms: checking link_set_linux_module_param_desc
[ 1.0000000] ksyms: checking link_set_linux_module_param_info
[ 1.0000000] ksyms: checking link_set_domains
[ 1.0000000] ksyms: checking link_set_ieee80211_funcs
[ 1.0000000] ksyms: checking link_set_ah_chips
[ 1.0000000] ksyms: checking link_set_ah_rfs
[ 1.0000000] ksyms: checking link_set_dkwedge_methods
[ 1.0000000] ksyms: checking link_set_prop_linkpools
[ 1.0000000] ksyms: checking .data
[ 1.0000000] ksyms: checking .dtors
[ 1.0000000] ksyms: checking .data.cacheline_aligned
[ 1.0000000] ksyms: checking .data.read_mostly
[ 1.0000000] ksyms: checking .bss
[ 1.0000000] ksyms: checking .note.netbsd.ident
[ 1.0000000] ksyms: checking .note.Xen
[ 1.0000000] ksyms: checking .ident
[ 1.0000000] ksyms: checking .comment
[ 1.0000000] ksyms: checking .gnu_debuglink
[ 1.0000000] ksyms: checking .symtab
[ 1.0000000] ksyms: checking .strtab
[ 1.0000000] ksyms: checking .shstrtab
[ 1.0000000] Loaded initial symtab at 0xffffffff83600af8, strtab at 0xffffffff837737c0, # entries 63283
[ 1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
[ 1.0000000] 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
[ 1.0000000] 2018, 2019, 2020, 2021, 2022
[ 1.0000000] The NetBSD Foundation, Inc. All rights reserved.
[ 1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
[ 1.0000000] The Regents of the University of California. All rights reserved.
[ 1.0000000] NetBSD 9.99.98 (GENERIC_SYZKALLER) #0: Mon Jul 4 15:28:49 UTC 2022
[ 1.0000000] root@ci2:/syzkaller/jobs/netbsd/kernel/sys/arch/amd64/compile/obj/GENERIC_SYZKALLER
[ 1.0000000] total memory = 8191 MB
[ 1.0000000] avail memory = 7088 MB
[ 1.0000030] mainbus0 (root)
[ 1.0000030] ACPI: RSDP 0x00000000000F2740 000014 (v00 Google)
[ 1.0000030] ACPI: RSDT 0x00000000BFFFFF90 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
[ 1.0000030] ACPI: FACP 0x00000000BFFFF330 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
[ 1.0000030] ACPI: DSDT 0x00000000BFFFD8C0 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001)
[ 1.0000030] ACPI: FACS 0x00000000BFFFD880 000040
[ 1.0000030] ACPI: SRAT 0x00000000BFFFFE60 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001)
[ 1.0000030] ACPI: APIC 0x00000000BFFFFDB0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001)
[ 1.0000030] ACPI: SSDT 0x00000000BFFFF430 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
[ 1.0000030] ACPI: WAET 0x00000000BFFFFE30 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
[ 1.0000030] ACPI: 2 ACPI AML tables successfully acquired and loaded
[ 1.0000030] ioapic0 at mainbus0 apid 0
[ 1.0000030] cpu0 at mainbus0 apid 0
[ 1.0000030] cpu0: Intel(R) Xeon(R) CPU @ 2.20GHz, id 0x406f0
[ 1.0000030] cpu0: node 0, package 0, core 0, smt 0
[ 1.0000030] cpu1 at mainbus0 apid 1
[ 1.0000030] cpu1: Intel(R) Xeon(R) CPU @ 2.20GHz, id 0x406f0
[ 1.0000030] cpu1: node 0, package 0, core 0, smt 1
[ 1.0000030] acpi0 at mainbus0: Intel ACPICA 20211217
[ 1.0000030] acpi0: fixed power button present
[ 1.0000030] acpi0: fixed sleep button present
[ 1.0049302] pckbc1 at acpi0 (KBD, PNP0303) (kbd port): io 0x60,0x64 irq 1
[ 1.0049302] pckbc2 at acpi0 (MOU, PNP0F13) (aux port): irq 12
[ 1.0049302] com0 at acpi0 (COM1, PNP0501-1): io 0x3f8-0x3ff irq 4
[ 1.0049302] com0: ns16550a, 16-byte FIFO
[ 1.0049302] com0: console
[ 1.0049302] com1 at acpi0 (COM2, PNP0501-2): io 0x2f8-0x2ff irq 3
[ 1.0049302] com1: ns16550a, 16-byte FIFO
[ 1.0049302] com2 at acpi0 (COM3, PNP0501-3): io 0x3e8-0x3ef irq 6
[ 1.0049302] com2: ns16550a, 16-byte FIFO
[ 1.0049302] com3 at acpi0 (COM4, PNP0501-4): io 0x2e8-0x2ef irq 7
[ 1.0049302] com3: ns16550a, 16-byte FIFO
[ 1.0049302] PEVT (QEMU0001) at acpi0 not configured
[ 1.0049302] ACPI: Enabled 16 GPEs in block 00 to 0F
[ 1.0049302] pckbd0 at pckbc1 (kbd slot)
[ 1.0049302] pckbc1: using irq 1 for kbd slot
[ 1.0049302] wskbd0 at pckbd0 mux 1
[ 1.0049302] pms0 at pckbc1 (aux slot)
[ 1.0049302] pckbc1: using irq 12 for aux slot
[ 1.0049302] wsmouse0 at pms0 mux 0
[ 1.0049302] pci0 at mainbus0 bus 0: configuration mode 1
[ 1.0049302] pchb0 at pci0 dev 0 function 0: Intel 82441FX (PMC) PCI and Memory Controller (rev. 0x02)
[ 1.0049302] pcib0 at pci0 dev 1 function 0: Intel 82371AB (PIIX4) PCI-ISA Bridge (rev. 0x03)
[ 1.0049302] piixpm0 at pci0 dev 1 function 3: Intel 82371AB (PIIX4) Power Management Controller (rev. 0x03)
[ 1.0049302] piixpm0: SMBus disabled
[ 1.0049302] virtio0 at pci0 dev 3 function 0
[ 1.0049302] virtio0: SCSI device (rev. 0x00)
[ 1.0049302] vioscsi0 at virtio0: features: 0
[ 1.0049302] vioscsi0: cmd_per_lun 256 qsize 8192 seg_max 64 max_target 253 max_lun 1
[ 1.0049302] virtio0: config interrupting at msix0 vec 0
[ 1.0049302] virtio0: queues interrupting at msix0 vec 1
[ 1.0049302] scsibus0 at vioscsi0: 254 targets, 2 luns per target
[ 1.0049302] virtio1 at pci0 dev 4 function 0
[ 1.0049302] virtio1: network device (rev. 0x00)
[ 1.0049302] vioif0 at virtio1: features: 0x20030020<EVENT_IDX,CTRL_VQ,STATUS,MAC>
[ 1.0049302] vioif0: Ethernet address 42:01:0a:80:00:02
[ 1.0049302] virtio1: config interrupting at msix1 vec 0
[ 1.0049302] virtio1: queues interrupting at msix1 vec 1
[ 1.0049302] genfb0 at pci0 dev 5 function 0: vendor 1ae0 product a002 (rev. 0x01)
[ 1.0049302] virtio2 at pci0 dev 6 function 0
[ 1.0049302] virtio2: memory balloon device (rev. 0x00)
[ 1.0049302] viomb0 at virtio2: features: 0x1<MUST_TELL_HOST>
[ 1.0049302] virtio2: interrupting at ioapic0 pin 10
[ 1.0049302] virtio3 at pci0 dev 7 function 0
[ 1.0049302] virtio3: entropy device (rev. 0x00)
[ 1.0049302] viornd0 at virtio3: features: 0
[ 1.0049302] virtio3: interrupting at ioapic0 pin 11
[ 1.0049302] isa0 at pcib0
[ 1.0049302] attimer0 at isa0 port 0x40-0x43
[ 1.0049302] pcppi0 at isa0 port 0x61
[ 1.0049302] spkr0 at pcppi0: PC Speaker
[ 1.0049302] wsbell at spkr0 not configured
[ 1.0049302] midi0 at pcppi0: PC speaker
[ 1.0049302] sysbeep0 at pcppi0
[ 1.0049302] attimer0: attached to pcppi0
[ 1.0049302] acpicpu0 at cpu0: ACPI CPU
[ 1.0049302] acpicpu1 at cpu1: ACPI CPU
[ 1.8108781] cpu0 has 2 core siblings: cpu1 cpu0
[ 1.8231872] cpu0 has 2 pkg siblings: cpu1 cpu0
[ 1.8231872] cpu0 has 1 1st siblings: cpu0
[ 1.8335274] cpu0 first in package: cpu0
[ 1.8335274] cpu1 has 2 core siblings: cpu0 cpu1
[ 1.8421056] cpu1 has 2 pkg siblings: cpu0 cpu1
[ 1.8421056] cpu1 has 1 1st siblings: cpu0
[ 1.8515805] cpu1 first in package: cpu0
[ 2.0079266] sd0 at scsibus0 target 1 lun 0: <Google, PersistentDisk, 1> disk fixed
[ 2.0263741] sd0: fabricating a geometry
[ 2.0263741] sd0: 2048 MB, 2048 cyl, 64 head, 32 sec, 512 bytes/sect x 4194304 sectors
[ 2.0463767] sd0: fabricating a geometry
[ 2.0563746] dk0 at sd0: "49b813d1-8009-4c4f-b3e1-2cc288366ecc", 2097085 blocks at 64, type: ffs
[ 2.0696080] dk1 at sd0: "2a5f9479-33b7-499d-8cc4-f8d9ae0937b7", 2097119 blocks at 2097152, type: swap
[ 2.0795348] sd0: async, 8-bit transfers, tagged queueing
[ 2.5563684] usb0 at vhci0: USB revision 2.0
[ 2.5764142] uhub0 at usb0: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[ 2.9463845] usb1 at vhci1: USB revision 2.0
[ 2.9764060] uhub1 at usb1: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[ 3.3463758] usb2 at vhci2: USB revision 2.0
[ 3.3764451] uhub2 at usb2: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[ 3.7463759] usb3 at vhci3: USB revision 2.0
[ 3.7664136] uhub3 at usb3: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[ 4.1363780] usb4 at vhci4: USB revision 2.0
[ 4.1564044] uhub4 at usb4: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[ 4.5263788] usb5 at vhci5: USB revision 2.0
[ 4.5464106] uhub5 at usb5: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[ 4.9163797] usb6 at vhci6: USB revision 2.0
[ 4.9364072] uhub6 at usb6: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[ 5.3063858] usb7 at vhci7: USB revision 2.0
[ 5.3364145] uhub7 at usb7: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[ 5.3964080] boot device: sd0
[ 5.3964080] root on dk0 dumps on dk1
[ 5.4063800] dump_misc_init: max_paddr = 0x240000000
[ 5.4201757] mountroot: trying lfs...
[ 5.4291911] mountroot: trying ffs...
[ 5.4864188] root file system type: ffs
[ 5.4864188] kern.module.path=/stand/amd64/9.99.98/modules
[ 5.5008695] clock: unknown CMOS layout
[ 5.5664217] init: copying out path `/sbin/init' 11
Mon Jul 4 15:32[ 6.4964163] panic: kernel diagnostic assertion "error" failed: file "/syzkaller/jobs/netbsd/kernel/sys/kern/tty.c", line 2281
:22 UTC 2022
[ 6.5149991] cpu0: Begin traceback...
[ 6.5173325] vpanic() at netbsd:vpanic+0x282
[ 6.5363851] _sub_D_65535_0() at netbsd:_sub_D_65535_0+-0x23de8
[ 6.5563869] ttwrite() at netbsd:ttwrite+0x9ea
[ 6.5763884] comwrite() at netbsd:comwrite+0xc0
[ 6.6063897] cdev_write() at netbsd:cdev_write+0x1bd
[ 6.6263854] cnwrite() at netbsd:cnwrite+0x8d
[ 6.6463867] cdev_write() at netbsd:cdev_write+0x1bd
[ 6.6663860] spec_write() at netbsd:spec_write+0x26d
[ 6.6863875] VOP_WRITE() at netbsd:VOP_WRITE+0x20b
[ 6.7063895] vn_write() at netbsd:vn_write+0x25d
[ 6.7363871] dofilewrite() at netbsd:dofilewrite+0x1cf
[ 6.7563881] sys_write() at netbsd:sys_write+0x9c
[ 6.7763861] syscall() at netbsd:syscall+0x25a
[ 6.7863865] --- syscall (number 4) ---
[ 6.7863865] netbsd:syscall+0x25a:
[ 6.7863865] cpu0: End traceback...
[ 6.7863865] fatal breakpoint trap in supervisor mode
[ 6.7966742] trap type 1 code 0 rip 0xffffffff80220a4d cs 0x8 rflags 0x282 cr2 0x7a379081e496 ilevel 0 rsp 0xffffd5819d7e8610
[ 6.7966742] curlwp 0xffffd58012a40780 pid 202.202 lowest kstack 0xffffd5819d7e12c0
Stopped in pid 202.202 (sh) at netbsd:breakpoint+0x5: leave
breakpoint() at netbsd:breakpoint+0x5
db_panic() at netbsd:db_panic+0x105
vpanic() at netbsd:vpanic+0x282
_sub_D_65535_0() at netbsd:_sub_D_65535_0+-0x23de8
ttwrite() at netbsd:ttwrite+0x9ea
comwrite() at netbsd:comwrite+0xc0
cdev_write() at netbsd:cdev_write+0x1bd
cnwrite() at netbsd:cnwrite+0x8d
cdev_write() at netbsd:cdev_write+0x1bd
spec_write() at netbsd:spec_write+0x26d
VOP_WRITE() at netbsd:VOP_WRITE+0x20b
vn_write() at netbsd:vn_write+0x25d
dofilewrite() at netbsd:dofilewrite+0x1cf
sys_write() at netbsd:sys_write+0x9c
syscall() at netbsd:syscall+0x25a
--- syscall (number 4) ---
netbsd:syscall+0x25a:
ds 0
es 0
fs 85d0
gs eb06
rdi 5
--db_more--
syzkaller build log:
go env (err=<nil>)
GO111MODULE="auto"
GOARCH="amd64"
GOBIN=""
GOCACHE="/syzkaller/.cache/go-build"
GOENV="/syzkaller/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/syzkaller/jobs/netbsd/gopath/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/syzkaller/jobs/netbsd/gopath"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct";
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.17"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/syzkaller/jobs/netbsd/gopath/src/github.com/google/syzkaller/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build2139974712=/tmp/go-build -gno-record-gcc-switches"
git status (err=<nil>)
HEAD detached at a7dab6385
nothing to commit, working tree clean
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
bin/syz-sysgen
touch .descriptions
GOOS=netbsd GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a7dab6385c1d95547a88e22577fb56fbcd5c37eb -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220205-085958'" "-tags=syz_target syz_os_netbsd syz_arch_amd64 " -o ./bin/netbsd_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=netbsd GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a7dab6385c1d95547a88e22577fb56fbcd5c37eb -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220205-085958'" "-tags=syz_target syz_os_netbsd syz_arch_amd64 " -o ./bin/netbsd_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
GOOS=netbsd GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a7dab6385c1d95547a88e22577fb56fbcd5c37eb -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220205-085958'" "-tags=syz_target syz_os_netbsd syz_arch_amd64 " -o ./bin/netbsd_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress
mkdir -p ./bin/netbsd_amd64
/syzkaller/shared/netbsd/tools/bin/x86_64--netbsd-g++ -o ./bin/netbsd_amd64/syz-executor executor/executor.cc \
-m64 --sysroot /syzkaller/shared/netbsd/dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384 -fpermissive -w -DGOOS_netbsd=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"a7dab6385c1d95547a88e22577fb56fbcd5c37eb\"
Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=14cdf858080000
Tested on:
commit: 330a6f8f lint: do not treat message IDs as arithmetic ..
git tree: https://github.com/NetBSD/src trunk
kernel config: https://syzkaller.appspot.com/x/.config?x=fab579639ba4bf0a
dashboard link: https://syzkaller.appspot.com/bug?extid=e0f56178d0add0d8be20
compiler: g++ (Debian 10.2.1-6) 10.2.1 20210110
patch: https://syzkaller.appspot.com/x/patch.diff?x=1633cf04080000
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