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Message-ID: <000000000000a93fca06122b6a90@google.com>
Date: Sat, 24 Feb 2024 18:19:02 -0800
From: syzbot <syzbot+d7521c1e3841ed075a42@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, penguin-kernel@...ove.sakura.ne.jp,
syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [mm] KMSAN: uninit-value in virtqueue_add (4)
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
processors activated (8800.82 BogoMIPS)
[ 1.438059][ T1] devtmpfs: initialized
[ 1.438059][ T1] x86/mm: Memory block size: 128MB
[ 1.537424][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 1.541248][ T1] futex hash table entries: 512 (order: 3, 32768 bytes, vmalloc)
[ 1.543999][ T1] PM: RTC time: 02:09:52, date: 2024-02-25
[ 1.551035][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[ 1.570747][ T1] audit: initializing netlink subsys (disabled)
[ 1.573762][ T27] audit: type=2000 audit(1708826992.525:1): state=initialized audit_enabled=0 res=1
[ 1.589225][ T1] thermal_sys: Registered thermal governor 'step_wise'
[ 1.589289][ T1] thermal_sys: Registered thermal governor 'user_space'
[ 1.591526][ T1] cpuidle: using governor menu
[ 1.594184][ T1] NET: Registered PF_QIPCRTR protocol family
[ 1.609953][ T1] dca service started, version 1.12.1
[ 1.610033][ T1] PCI: Using configuration type 1 for base access
[ 1.637050][ T1] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages
[ 1.640047][ T1] HugeTLB: 0 KiB vmemmap can be freed for a 1.00 GiB page
[ 1.642925][ T1] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages
[ 1.643291][ T1] HugeTLB: 0 KiB vmemmap can be freed for a 2.00 MiB page
[ 1.693336][ T1] raid6: skipped pq benchmark and selected avx2x4
[ 1.693336][ T1] raid6: using avx2x2 recovery algorithm
[ 1.697685][ T1] ACPI: Added _OSI(Module Device)
[ 1.700031][ T1] ACPI: Added _OSI(Processor Device)
[ 1.703277][ T1] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 1.705648][ T1] ACPI: Added _OSI(Processor Aggregator Device)
[ 2.205354][ T1] ACPI: 2 ACPI AML tables successfully acquired and loaded
[ 2.299980][ T1] ACPI: _OSC evaluation for CPUs failed, trying _PDC
[ 2.362337][ T1] ACPI: Interpreter enabled
[ 2.364750][ T1] ACPI: PM: (supports S0 S3 S4 S5)
[ 2.365761][ T1] ACPI: Using IOAPIC for interrupt routing
[ 2.368508][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 2.371280][ T1] PCI: Ignoring E820 reservations for host bridge windows
[ 2.390515][ T1] ACPI: Enabled 16 GPEs in block 00 to 0F
[ 3.115531][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 3.117418][ T1] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI HPX-Type3]
[ 3.119220][ T1] acpi PNP0A03:00: _OSC: not requesting OS control; OS requires [ExtendedConfig ASPM ClockPM MSI]
[ 3.123713][ T1] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended configuration space under this bridge
[ 3.193294][ T1] PCI host bridge to bus 0000:00
[ 3.193294][ T1] pci_bus 0000:00: Unknown NUMA node; performance will be reduced
[ 3.194712][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window]
[ 3.196205][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
[ 3.197730][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[ 3.199394][ T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfefff window]
[ 3.200955][ T1] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 3.204545][ T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 conventional PCI endpoint
[ 3.216364][ T1] pci 0000:00:01.0: [8086:7110] type 00 class 0x060100 conventional PCI endpoint
[ 3.259076][ T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 conventional PCI endpoint
[ 3.289965][ T1] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI
[ 3.303975][ T1] pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000 conventional PCI endpoint
[ 3.316498][ T1] pci 0000:00:03.0: BAR 0 [io 0xc000-0xc03f]
[ 3.324669][ T1] pci 0000:00:03.0: BAR 1 [mem 0xfe800000-0xfe80007f]
[ 3.358364][ T1] pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000 conventional PCI endpoint
[ 3.374736][ T1] pci 0000:00:04.0: BAR 0 [io 0xc040-0xc07f]
[ 3.383283][ T1] pci 0000:00:04.0: BAR 1 [mem 0xfe801000-0xfe80107f]
[ 3.419323][ T1] pci 0000:00:05.0: [1ae0:a002] type 00 class 0x030000 conventional PCI endpoint
[ 3.437913][ T1] pci 0000:00:05.0: BAR 0 [mem 0xfe000000-0xfe7fffff]
[ 3.476881][ T1] pci 0000:00:05.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[ 3.495064][ T1] pci 0000:00:06.0: [1af4:1002] type 00 class 0x00ff00 conventional PCI endpoint
[ 3.509218][ T1] pci 0000:00:06.0: BAR 0 [io 0xc080-0xc09f]
[ 3.518528][ T1] pci 0000:00:06.0: BAR 1 [mem 0xfe802000-0xfe80207f]
[ 3.557251][ T1] pci 0000:00:07.0: [1af4:1005] type 00 class 0x00ff00 conventional PCI endpoint
[ 3.569662][ T1] pci 0000:00:07.0: BAR 0 [io 0xc0a0-0xc0bf]
[ 3.578093][ T1] pci 0000:00:07.0: BAR 1 [mem 0xfe803000-0xfe80303f]
[ 3.723845][ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10
[ 3.748176][ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10
[ 3.771042][ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11
[ 3.793854][ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11
[ 3.805804][ T1] ACPI: PCI: Interrupt link LNKS configured for IRQ 9
[ 3.874360][ T1] iommu: Default domain type: Translated
[ 3.874835][ T1] iommu: DMA domain TLB invalidation policy: lazy mode
[ 3.890314][ T1] =====================================================
[ 3.890556][ T1] BUG: KMSAN: uninit-value in __list_del_entry_valid_or_report+0x19e/0x490
[ 3.890717][ T1] __list_del_entry_valid_or_report+0x19e/0x490
[ 3.890868][ T1] stack_depot_save_flags+0x3e7/0x7b0
[ 3.890973][ T1] stack_depot_save+0x12/0x20
[ 3.891068][ T1] ref_tracker_alloc+0x215/0x700
[ 3.891170][ T1] sk_alloc+0x7b4/0x850
[ 3.891271][ T1] __netlink_kernel_create+0x1ec/0xe50
[ 3.891398][ T1] scsi_netlink_init+0x6f/0x140
[ 3.891505][ T1] init_scsi+0x1dc/0x300
[ 3.891593][ T1] do_one_initcall+0x216/0x960
[ 3.891705][ T1] do_initcall_level+0x140/0x350
[ 3.891814][ T1] do_initcalls+0xf0/0x1d0
[ 3.891913][ T1] do_basic_setup+0x22/0x30
[ 3.892013][ T1] kernel_init_freeable+0x300/0x4b0
[ 3.892122][ T1] kernel_init+0x2f/0x7e0
[ 3.892241][ T1] ret_from_fork+0x66/0x80
[ 3.892364][ T1] ret_from_fork_asm+0x11/0x20
[ 3.892477][ T1]
[ 3.892491][ T1] Uninit was created at:
[ 3.892629][ T1] __alloc_pages+0x9a4/0xe00
[ 3.892712][ T1] alloc_pages_mpol+0x62b/0x9d0
[ 3.892806][ T1] alloc_pages+0x1be/0x1e0
[ 3.892895][ T1] stack_depot_save_flags+0x73a/0x7b0
[ 3.892999][ T1] stack_depot_save+0x12/0x20
[ 3.893094][ T1] ref_tracker_alloc+0x215/0x700
[ 3.893196][ T1] sk_alloc+0x7b4/0x850
[ 3.893197][ T1] __netlink_kernel_create+0x1ec/0xe50
[ 3.893197][ T1] cn_init+0x6f/0x280
[ 3.893197][ T1] do_one_initcall+0x216/0x960
[ 3.893197][ T1] do_initcall_level+0x140/0x350
[ 3.893197][ T1] do_initcalls+0xf0/0x1d0
[ 3.893197][ T1] do_basic_setup+0x22/0x30
[ 3.893197][ T1] kernel_init_freeable+0x300/0x4b0
[ 3.893197][ T1] kernel_init+0x2f/0x7e0
[ 3.893197][ T1] ret_from_fork+0x66/0x80
[ 3.893197][ T1] ret_from_fork_asm+0x11/0x20
[ 3.893197][ T1]
[ 3.893197][ T1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc5-syzkaller-00329-gab0a97cffa0b-dirty #0
[ 3.893197][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
[ 3.893197][ T1] =====================================================
[ 3.893197][ T1] Disabling lock debugging due to kernel taint
[ 3.893197][ T1] Kernel panic - not syncing: kmsan.panic set ...
[ 3.893197][ T1] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G B 6.8.0-rc5-syzkaller-00329-gab0a97cffa0b-dirty #0
[ 3.893197][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
[ 3.893197][ T1] Call Trace:
[ 3.893197][ T1] <TASK>
[ 3.893197][ T1] dump_stack_lvl+0x1bf/0x240
[ 3.893197][ T1] dump_stack+0x1e/0x20
[ 3.893197][ T1] panic+0x4de/0xc90
[ 3.893197][ T1] kmsan_report+0x2d0/0x2d0
[ 3.893197][ T1] ? kmsan_metadata_is_contiguous+0x66/0x1e0
[ 3.893197][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 3.893197][ T1] ? __msan_warning+0x96/0x110
[ 3.893197][ T1] ? __list_del_entry_valid_or_report+0x19e/0x490
[ 3.893197][ T1] ? stack_depot_save_flags+0x3e7/0x7b0
[ 3.893197][ T1] ? stack_depot_save+0x12/0x20
[ 3.893197][ T1] ? ref_tracker_alloc+0x215/0x700
[ 3.893197][ T1] ? sk_alloc+0x7b4/0x850
[ 3.893197][ T1] ? __netlink_kernel_create+0x1ec/0xe50
[ 3.893197][ T1] ? scsi_netlink_init+0x6f/0x140
[ 3.893197][ T1] ? init_scsi+0x1dc/0x300
[ 3.893197][ T1] ? do_one_initcall+0x216/0x960
[ 3.893197][ T1] ? do_initcall_level+0x140/0x350
[ 3.893197][ T1] ? do_initcalls+0xf0/0x1d0
[ 3.893197][ T1] ? do_basic_setup+0x22/0x30
[ 3.893197][ T1] ? kernel_init_freeable+0x300/0x4b0
[ 3.893197][ T1] ? kernel_init+0x2f/0x7e0
[ 3.893197][ T1] ? ret_from_fork+0x66/0x80
[ 3.893197][ T1] ? ret_from_fork_asm+0x11/0x20
[ 3.893197][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 3.893197][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 3.893197][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 3.893197][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 3.893197][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 3.893197][ T1] ? _raw_spin_lock_irqsave+0x35/0xc0
[ 3.893197][ T1] ? filter_irq_stacks+0x60/0x1a0
[ 3.893197][ T1] ? stack_depot_save_flags+0x2c/0x7b0
[ 3.893197][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 3.893197][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 3.893197][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 3.893197][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 3.893197][ T1] __msan_warning+0x96/0x110
[ 3.893197][ T1] __list_del_entry_valid_or_report+0x19e/0x490
[ 3.893197][ T1] stack_depot_save_flags+0x3e7/0x7b0
[ 3.893197][ T1] stack_depot_save+0x12/0x20
[ 3.893197][ T1] ref_tracker_alloc+0x215/0x700
[ 3.893197][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 3.893197][ T1] ? sk_alloc+0x7b4/0x850
[ 3.893197][ T1] ? __netlink_kernel_create+0x1ec/0xe50
[ 3.893197][ T1] ? scsi_netlink_init+0x6f/0x140
[ 3.893197][ T1] ? init_scsi+0x1dc/0x300
[ 3.893197][ T1] ? do_one_initcall+0x216/0x960
[ 3.893197][ T1] ? do_initcall_level+0x140/0x350
[ 3.893197][ T1] ? do_initcalls+0xf0/0x1d0
[ 3.893197][ T1] ? do_basic_setup+0x22/0x30
[ 3.893197][ T1] ? kernel_init_freeable+0x300/0x4b0
[ 3.893197][ T1] ? kernel_init+0x2f/0x7e0
[ 3.893197][ T1] ? ret_from_fork+0x66/0x80
[ 3.893197][ T1] ? ret_from_fork_asm+0x11/0x20
[ 3.893197][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 3.893197][ T1] sk_alloc+0x7b4/0x850
[ 3.893197][ T1] __netlink_kernel_create+0x1ec/0xe50
[ 3.893197][ T1] ? kmsan_internal_memmove_metadata+0x91/0x220
[ 3.893197][ T1] scsi_netlink_init+0x6f/0x140
[ 3.893197][ T1] ? scsi_netlink_init+0x140/0x140
[ 3.893197][ T1] init_scsi+0x1dc/0x300
[ 3.893197][ T1] ? udmabuf_dev_init+0x2a0/0x2a0
[ 3.893197][ T1] do_one_initcall+0x216/0x960
[ 3.893197][ T1] ? udmabuf_dev_init+0x2a0/0x2a0
[ 3.893197][ T1] ? kmsan_get_metadata+0x80/0x1c0
[ 3.893197][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 3.893197][ T1] ? filter_irq_stacks+0x164/0x1a0
[ 3.893197][ T1] ? stack_depot_save_flags+0x2c/0x7b0
[ 3.893197][ T1] ? skip_spaces+0x8f/0xc0
[ 3.893197][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 3.893197][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 3.893197][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 3.893197][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 3.893197][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 3.893197][ T1] ? parse_args+0x1511/0x15e0
[ 3.893197][ T1] ? kmsan_get_metadata+0x146/0x1c0
[ 3.893197][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0
[ 3.893197][ T1] ? udmabuf_dev_init+0x2a0/0x2a0
[ 3.893197][ T1] do_initcall_level+0x140/0x350
[ 3.893197][ T1] do_initcalls+0xf0/0x1d0
[ 3.893197][ T1] ? arch_cpuhp_init_parallel_bringup+0xe0/0xe0
[ 3.893197][ T1] do_basic_setup+0x22/0x30
[ 3.893197][ T1] kernel_init_freeable+0x300/0x4b0
[ 3.893197][ T1] ? rest_init+0x260/0x260
[ 3.893197][ T1] kernel_init+0x2f/0x7e0
[ 3.893197][ T1] ? rest_init+0x260/0x260
[ 3.893197][ T1] ret_from_fork+0x66/0x80
[ 3.893197][ T1] ? rest_init+0x260/0x260
[ 3.893197][ T1] ret_from_fork_asm+0x11/0x20
[ 3.893197][ T1] </TASK>
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-build3486373933=/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=147e9a30180000
Tested on:
commit: ab0a97cf Merge tag 'powerpc-6.8-4' of git://git.kernel..
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=126caac4180000
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