Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 23 Feb 2024 22:22:04 -0800 | Subject | Re: [syzbot] [mm] KMSAN: uninit-value in virtqueue_add (4) | From | syzbot <> |
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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
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