Re: [syzbot] [mm] KMSAN: uninit-value in virtqueue_add (4)
From: syzbot
Date: Sat Feb 24 2024 - 01:22:13 EST
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
d
[ 21.218838][ T1] befs: version: 0.9.3
[ 21.224039][ T1] ocfs2: Registered cluster interface o2cb
[ 21.231409][ T1] ocfs2: Registered cluster interface user
[ 21.238747][ T1] OCFS2 User DLM kernel interface loaded
[ 21.258685][ T1] gfs2: GFS2 installed
[ 21.299341][ T1] ceph: loaded (mds proto 32)
[ 25.455884][ T1] NET: Registered PF_ALG protocol family
[ 25.462173][ T1] xor: automatically using best checksumming function avx
[ 25.470258][ T1] async_tx: api initialized (async)
[ 25.475789][ T1] Key type asymmetric registered
[ 25.480985][ T1] Asymmetric key parser 'x509' registered
[ 25.486893][ T1] Asymmetric key parser 'pkcs8' registered
[ 25.492975][ T1] Key type pkcs7_test registered
[ 25.498812][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 240)
[ 25.509132][ T1] io scheduler mq-deadline registered
[ 25.514858][ T1] io scheduler kyber registered
[ 25.520533][ T1] io scheduler bfq registered
[ 25.537345][ T1] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[ 25.557878][ T1] ACPI: button: Power Button [PWRF]
[ 25.565475][ T1] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1
[ 25.575850][ T1] ACPI: button: Sleep Button [SLPF]
[ 25.599393][ T1] ioatdma: Intel(R) QuickData Technology Driver 5.00
[ 25.688382][ T1] ACPI: \_SB_.LNKC: Enabled at IRQ 11
[ 25.698171][ T1] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver
[ 25.773719][ T1] ACPI: \_SB_.LNKD: Enabled at IRQ 10
[ 25.780039][ T1] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver
[ 25.858501][ T1] ACPI: \_SB_.LNKB: Enabled at IRQ 10
[ 25.864338][ T1] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver
[ 25.925717][ T1] virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver
[ 26.972684][ T1] N_HDLC line discipline registered with maxframe=4096
[ 26.980030][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 26.993242][ T1] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 27.024320][ T1] 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A
[ 27.054743][ T1] 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A
[ 27.083834][ T1] 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A
[ 27.133086][ T1] Non-volatile memory driver v1.3
[ 27.161382][ T1] Linux agpgart interface v0.103
[ 27.177896][ T1] ACPI: bus type drm_connector registered
[ 27.195073][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0
[ 27.215880][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1
[ 27.690881][ T1] Console: switching to colour frame buffer device 128x48
[ 27.845338][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device
[ 27.853291][ T1] usbcore: registered new interface driver udl
[ 28.015016][ T1] brd: module loaded
[ 28.195324][ T1] loop: module loaded
[ 28.444871][ T1] zram: Added device: zram0
[ 28.471729][ T1] null_blk: disk nullb0 created
[ 28.476949][ T1] null_blk: module loaded
[ 28.481708][ T1] Guest personality initialized and is inactive
[ 28.489569][ T1] VMCI host device registered (name=vmci, major=10, minor=118)
[ 28.497772][ T1] Initialized host personality
[ 28.503268][ T1] usbcore: registered new interface driver rtsx_usb
[ 28.512421][ T1] usbcore: registered new interface driver viperboard
[ 28.520209][ T1] usbcore: registered new interface driver dln2
[ 28.527820][ T1] usbcore: registered new interface driver pn533_usb
[ 28.540882][ T1] nfcsim 0.2 initialized
[ 28.545800][ T1] usbcore: registered new interface driver port100
[ 28.553465][ T1] usbcore: registered new interface driver nfcmrvl
[ 28.570561][ T1] Loading iSCSI transport class v2.0-870.
[ 28.605596][ T1] virtio_scsi virtio0: 1/0/0 default/read/poll queues
[ 28.652924][ T1] scsi host0: Virtio SCSI HBA
[ 29.190956][ T1] st: Version 20160209, fixed bufsize 32768, s/g segs 256
[ 29.207865][ T26] scsi 0:0:1:0: Direct-Access Google PersistentDisk 1 PQ: 0 ANSI: 6
[ 29.257823][ T1] Rounding down aligned max_sectors from 4294967295 to 4294967288
[ 29.270496][ T1] db_root: cannot open: /etc/target
[ 29.286144][ T1] =====================================================
[ 29.286396][ T1] BUG: KMSAN: use-after-free in __list_del_entry_valid_or_report+0x19e/0x490
[ 29.286565][ T1] __list_del_entry_valid_or_report+0x19e/0x490
[ 29.286657][ T1] stack_depot_save_flags+0x3e7/0x7b0
[ 29.286657][ T1] stack_depot_save+0x12/0x20
[ 29.286842][ T1] ref_tracker_alloc+0x215/0x700
[ 29.286842][ T1] net_rx_queue_update_kobjects+0x1eb/0xa80
[ 29.286842][ T1] netdev_register_kobject+0x30e/0x520
[ 29.286842][ T1] register_netdevice+0x198f/0x2170
[ 29.286842][ T1] bond_create+0x138/0x2a0
[ 29.286842][ T1] bonding_init+0x1a7/0x2d0
[ 29.286842][ T1] do_one_initcall+0x216/0x960
[ 29.286842][ T1] do_initcall_level+0x140/0x350
[ 29.286842][ T1] do_initcalls+0xf0/0x1d0
[ 29.286842][ T1] do_basic_setup+0x22/0x30
[ 29.287955][ T1] kernel_init_freeable+0x300/0x4b0
[ 29.287955][ T1] kernel_init+0x2f/0x7e0
[ 29.287955][ T1] ret_from_fork+0x66/0x80
[ 29.287955][ T1] ret_from_fork_asm+0x11/0x20
[ 29.287955][ T1]
[ 29.287955][ T1] Uninit was created at:
[ 29.287955][ T1] __free_pages_ok+0x133/0xeb0
[ 29.287955][ T1] alloc_pages_exact+0x2f5/0x350
[ 29.287955][ T1] vring_alloc_queue_split+0x2d9/0x990
[ 29.287955][ T1] vring_create_virtqueue_split+0x89/0x380
[ 29.287955][ T1] vring_create_virtqueue+0x101/0x1a0
[ 29.287955][ T1] setup_vq+0x175/0x510
[ 29.287955][ T1] vp_setup_vq+0x103/0x630
[ 29.287955][ T1] vp_find_vqs_msix+0x1162/0x16c0
[ 29.287955][ T1] vp_find_vqs+0x78/0x770
[ 29.287955][ T1] virtscsi_init+0xff7/0x17a0
[ 29.289671][ T1] virtscsi_probe+0x43b/0xfe0
[ 29.289671][ T1] virtio_dev_probe+0x16df/0x1900
[ 29.289671][ T1] really_probe+0x506/0xf40
[ 29.289671][ T1] __driver_probe_device+0x2a7/0x5d0
[ 29.289671][ T1] driver_probe_device+0x72/0x7b0
[ 29.289671][ T1] __driver_attach+0x710/0xa30
[ 29.289671][ T1] bus_for_each_dev+0x34c/0x530
[ 29.289671][ T1] driver_attach+0x51/0x60
[ 29.289671][ T1] bus_add_driver+0x747/0xca0
[ 29.289671][ T1] driver_register+0x3fb/0x650
[ 29.289671][ T1] register_virtio_driver+0xd1/0xf0
[ 29.289671][ T1] virtio_scsi_init+0x123/0x2f0
[ 29.289671][ T1] do_one_initcall+0x216/0x960
[ 29.289671][ T1] do_initcall_level+0x140/0x350
[ 29.289671][ T1] do_initcalls+0xf0/0x1d0
[ 29.289671][ T1] do_basic_setup+0x22/0x30
[ 29.289671][ T1] kernel_init_freeable+0x300/0x4b0
[ 29.289671][ T1] kernel_init+0x2f/0x7e0
[ 29.289671][ T1] ret_from_fork+0x66/0x80
[ 29.289671][ T1] ret_from_fork_asm+0x11/0x20
[ 29.289671][ T1]
[ 29.289671][ T1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc5-syzkaller-00278-g603c04e27c3e-dirty #0
[ 29.289671][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
[ 29.289671][ T1] =====================================================
[ 29.289671][ T1] Disabling lock debugging due to kernel taint
[ 29.289671][ T1] Kernel panic - not syncing: kmsan.panic set ...
[ 29.289671][ T1] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G B 6.8.0-rc5-syzkaller-00278-g603c04e27c3e-dirty #0
[ 29.289671][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
[ 29.289671][ T1] Call Trace:
[ 29.289671][ T1] <TASK>
[ 29.289671][ T1] dump_stack_lvl+0x1bf/0x240
[ 29.289671][ T1] dump_stack+0x1e/0x20
[ 29.289671][ T1] panic+0x4de/0xc90
[ 29.289671][ T1] kmsan_report+0x2d0/0x2d0
[ 29.289671][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 29.289671][ T1] ? __msan_warning+0x96/0x110
[ 29.289671][ T1] ? __list_del_entry_valid_or_report+0x19e/0x490
[ 29.289671][ T1] ? stack_depot_save_flags+0x3e7/0x7b0
[ 29.289671][ T1] ? stack_depot_save+0x12/0x20
[ 29.289671][ T1] ? ref_tracker_alloc+0x215/0x700
[ 29.289671][ T1] ? net_rx_queue_update_kobjects+0x1eb/0xa80
[ 29.289671][ T1] ? netdev_register_kobject+0x30e/0x520
[ 29.289671][ T1] ? register_netdevice+0x198f/0x2170
[ 29.289671][ T1] ? bond_create+0x138/0x2a0
[ 29.289671][ T1] ? bonding_init+0x1a7/0x2d0
[ 29.289671][ T1] ? do_one_initcall+0x216/0x960
[ 29.289671][ T1] ? do_initcall_level+0x140/0x350
[ 29.289671][ T1] ? do_initcalls+0xf0/0x1d0
[ 29.289671][ T1] ? do_basic_setup+0x22/0x30
[ 29.289671][ T1] ? kernel_init_freeable+0x300/0x4b0
[ 29.289671][ T1] ? kernel_init+0x2f/0x7e0
[ 29.289671][ T1] ? ret_from_fork+0x66/0x80
[ 29.289671][ T1] ? ret_from_fork_asm+0x11/0x20
[ 29.289671][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 29.289671][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 29.289671][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 29.289671][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 29.289671][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 29.289671][ T1] ? _raw_spin_lock_irqsave+0x35/0xc0
[ 29.289671][ T1] ? filter_irq_stacks+0x60/0x1a0
[ 29.289671][ T1] ? stack_depot_save_flags+0x2c/0x7b0
[ 29.289671][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 29.289671][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 29.289671][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 29.289671][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 29.289671][ T1] __msan_warning+0x96/0x110
[ 29.289671][ T1] __list_del_entry_valid_or_report+0x19e/0x490
[ 29.289671][ T1] stack_depot_save_flags+0x3e7/0x7b0
[ 29.289671][ T1] stack_depot_save+0x12/0x20
[ 29.289671][ T1] ref_tracker_alloc+0x215/0x700
[ 29.289671][ T1] ? dev_uevent_filter+0x53/0x110
[ 29.289671][ T1] ? net_rx_queue_update_kobjects+0x1eb/0xa80
[ 29.289671][ T1] ? netdev_register_kobject+0x30e/0x520
[ 29.289671][ T1] ? register_netdevice+0x198f/0x2170
[ 29.289671][ T1] ? bond_create+0x138/0x2a0
[ 29.289671][ T1] ? bonding_init+0x1a7/0x2d0
[ 29.289671][ T1] ? do_one_initcall+0x216/0x960
[ 29.289671][ T1] ? do_initcall_level+0x140/0x350
[ 29.289671][ T1] ? do_initcalls+0xf0/0x1d0
[ 29.289671][ T1] ? do_basic_setup+0x22/0x30
[ 29.289671][ T1] ? kernel_init_freeable+0x300/0x4b0
[ 29.289671][ T1] ? kernel_init+0x2f/0x7e0
[ 29.289671][ T1] ? ret_from_fork+0x66/0x80
[ 29.289671][ T1] ? ret_from_fork_asm+0x11/0x20
[ 29.289671][ T1] ? kmsan_internal_unpoison_memory+0x14/0x20
[ 29.289671][ T1] net_rx_queue_update_kobjects+0x1eb/0xa80
[ 29.289671][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 29.289671][ T1] netdev_register_kobject+0x30e/0x520
[ 29.289671][ T1] register_netdevice+0x198f/0x2170
[ 29.289671][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 29.289671][ T1] bond_create+0x138/0x2a0
[ 29.289671][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 29.289671][ T1] bonding_init+0x1a7/0x2d0
[ 29.289671][ T1] ? spi_dln2_driver_init+0x40/0x40
[ 29.289671][ T1] do_one_initcall+0x216/0x960
[ 29.289671][ T1] ? spi_dln2_driver_init+0x40/0x40
[ 29.289671][ T1] ? kmsan_get_metadata+0x80/0x1c0
[ 29.289671][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 29.289671][ T1] ? filter_irq_stacks+0x164/0x1a0
[ 29.289671][ T1] ? stack_depot_save_flags+0x2c/0x7b0
[ 29.289671][ T1] ? skip_spaces+0x8f/0xc0
[ 29.289671][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 29.289671][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 29.289671][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 29.289671][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 29.289671][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 29.289671][ T1] ? parse_args+0x1511/0x15e0
[ 29.289671][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 29.289671][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 29.289671][ T1] ? spi_dln2_driver_init+0x40/0x40
[ 29.289671][ T1] do_initcall_level+0x140/0x350
[ 29.289671][ T1] do_initcalls+0xf0/0x1d0
[ 29.289671][ T1] ? arch_cpuhp_init_parallel_bringup+0xe0/0xe0
[ 29.289671][ T1] do_basic_setup+0x22/0x30
[ 29.289671][ T1] kernel_init_freeable+0x300/0x4b0
[ 29.289671][ T1] ? rest_init+0x260/0x260
[ 29.289671][ T1] kernel_init+0x2f/0x7e0
[ 29.289671][ T1] ? rest_init+0x260/0x260
[ 29.289671][ T1] ret_from_fork+0x66/0x80
[ 29.289671][ T1] ? rest_init+0x260/0x260
[ 29.289671][ T1] ret_from_fork_asm+0x11/0x20
[ 29.289671][ T1] </TASK>
[ 29.289671][ T1] Kernel Offset: disabled
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-2/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs-2/linux/gopath'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.21.4'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='1'
GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build4072519577=/tmp/go-build -gno-record-gcc-switches'
git status (err=<nil>)
HEAD detached at 9bd8dcda8
nothing to commit, working tree clean
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:32: run command via tools/syz-env for best compatibility, see:
Makefile:33: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=9bd8dcda8c7c494d59bd3132a668f4784ea835c6 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240119-142441'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=9bd8dcda8c7c494d59bd3132a668f4784ea835c6 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240119-142441'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=9bd8dcda8c7c494d59bd3132a668f4784ea835c6 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240119-142441'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress
mkdir -p ./bin/linux_amd64
gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"9bd8dcda8c7c494d59bd3132a668f4784ea835c6\"
Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=1409f29a180000
Tested on:
commit: 603c04e2 Merge tag 'parisc-for-6.8-rc6' of git://git.k..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=d33318d4e4a0d226
dashboard link: https://syzkaller.appspot.com/bug?extid=d7521c1e3841ed075a42
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=164e2a9a180000