Re: [syzbot] [fs?] [usb?] KASAN: slab-use-after-free Read in lockref_get (2)
syzbot <[email protected]>
| Newsgroups | org.kernel.vger.linux-i2c,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
m: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[ 3.244305][ T1] NET: Registered PF_INET protocol family
[ 3.247499][ T1] IP idents hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc)
[ 3.259218][ T1] tcp_listen_portaddr_hash hash table entries: 4096 (order: 7, 294912 bytes, vmalloc)
[ 3.261261][ T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, vmalloc)
[ 3.263274][ T1] TCP established hash table entries: 65536 (order: 7, 524288 bytes, vmalloc)
[ 3.274524][ T1] TCP bind hash table entries: 65536 (order: 12, 9437184 bytes, vmalloc hugepage)
[ 3.281391][ T1] TCP: Hash tables configured (established 65536 bind 65536)
[ 3.284940][ T1] MPTCP token hash table entries: 8192 (order: 8, 720896 bytes, vmalloc)
[ 3.288577][ T1] UDP hash table entries: 4096 (order: 8, 1048576 bytes, vmalloc)
[ 3.291550][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family
[ 3.306684][ T1] RPC: Registered named UNIX socket transport module.
[ 3.307718][ T1] RPC: Registered udp transport module.
[ 3.308513][ T1] RPC: Registered tcp transport module.
[ 3.309357][ T1] RPC: Registered tcp-with-tls transport module.
[ 3.310392][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 3.316342][ T1] NET: Registered PF_XDP protocol family
[ 3.317480][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window]
[ 3.318551][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0x0fff window]
[ 3.319885][ T1] pci_bus 0000:00: resource 6 [io 0xc000-0xffff window]
[ 3.321388][ T1] pci_bus 0000:00: resource 7 [io 0xa000-0xbfff window]
[ 3.322459][ T1] pci_bus 0000:00: resource 8 [mem 0x000a0000-0x000bffff window]
[ 3.323839][ T1] pci_bus 0000:00: resource 9 [mem 0xc0000000-0xfebfefff window]
[ 3.326592][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[ 3.328327][ T1] PCI: CLS 0 bytes, default 64
[ 3.329389][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[ 3.330474][ T1] software IO TLB: mapped [mem 0x00000000b4400000-0x00000000b8400000] (64MB)
[ 3.333143][ T1] ACPI: bus type thunderbolt registered
[ 3.341226][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer
[ 3.346936][ T59] kworker/u8:1 (59) used greatest stack depth: 27864 bytes left
[ 3.364118][ T1] kvm_amd: CPU 1 isn't AMD or Hygon
[ 3.365204][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x285d48fab19, max_idle_ns: 440795208084 ns
[ 3.367725][ T1] clocksource: Switched to clocksource tsc
[ 3.403452][ T1] Initialise system trusted keyrings
[ 3.404162][ T84] kworker/u8:4 (84) used greatest stack depth: 27160 bytes left
[ 3.407742][ T1] workingset: timestamp_bits=40 (anon: 35) max_order=21 bucket_order=0 (anon: 0)
[ 3.415933][ T1] DLM installed
[ 3.421490][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 3.429626][ T1] NFS: Registering the id_resolver key type
[ 3.430824][ T1] Key type id_resolver registered
[ 3.431584][ T1] Key type id_legacy registered
[ 3.432928][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 3.434314][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[ 3.441599][ T1] smbdirect: subsystem loading...
[ 3.448154][ T1] smbdirect: subsystem loaded
[ 3.471719][ T1] Key type cifs.spnego registered
[ 3.472760][ T1] Key type cifs.idmap registered
[ 3.476921][ T1] ntfs3: Enabled Linux POSIX ACLs support
[ 3.477738][ T1] ntfs3: Read-only LZX/Xpress compression included
[ 3.478987][ T1] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc.
[ 3.482637][ T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc.
[ 3.483593][ T1] QNX4 filesystem 0.2.3 registered.
[ 3.484738][ T1] qnx6: QNX6 filesystem 1.0.0 registered.
[ 3.486442][ T1] fuse: init (API version 7.45)
[ 3.489877][ T1] orangefs_debugfs_init: called with debug mask: :none: :0:
[ 3.492401][ T1] orangefs_init: module version upstream loaded
[ 3.494199][ T1] JFS: nTxBlock = 8192, nTxLock = 65536
[ 3.507409][ T1] SGI XFS with ACLs, security attributes, realtime, scrub, repair, quota, no debug enabled
[ 3.514958][ T1] 9p: Installing v9fs 9p2000 file system support
[ 3.516652][ T1] NILFS version 2 loaded
[ 3.517609][ T1] befs: version: 0.9.3
[ 3.519354][ T1] ocfs2: Registered cluster interface o2cb
[ 3.521201][ T1] ocfs2: Registered cluster interface user
[ 3.523024][ T1] OCFS2 User DLM kernel interface loaded
[ 3.545147][ T1] gfs2: GFS2 installed
[ 3.560183][ T1] ceph: loaded (mds proto 32)
[ 3.573563][ T1] NET: Registered PF_ALG protocol family
[ 3.574709][ T1] async_tx: api initialized (async)
[ 3.575970][ T1] Key type asymmetric registered
[ 3.576921][ T1] Asymmetric key parser 'x509' registered
[ 3.577745][ T1] Asymmetric key parser 'pkcs8' registered
[ 3.578604][ T1] Key type pkcs7_test registered
[ 3.579842][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 239)
[ 3.583698][ T1] io scheduler mq-deadline registered
[ 3.584626][ T1] io scheduler kyber registered
[ 3.586119][ T1] io scheduler bfq registered
[ 3.601298][ T1] input: Power Button as /devices/platform/LNXPWRBN:00/input/input0
[ 3.605629][ T1] ACPI: button: Power Button [PWRF]
[ 3.609215][ T1] input: Sleep Button as /devices/platform/LNXSLPBN:00/input/input1
[ 3.611991][ T1] ACPI: button: Sleep Button [SLPF]
[ 3.635978][ T1] ioatdma: Intel(R) QuickData Technology Driver 5.00
[ 3.662181][ T10] ACPI: \_SB_.LNKC: Enabled at IRQ 11
[ 3.663176][ T10] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver
[ 3.694911][ T10] ACPI: \_SB_.LNKD: Enabled at IRQ 10
[ 3.696705][ T10] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver
[ 3.724400][ T10] ACPI: \_SB_.LNKB: Enabled at IRQ 10
[ 3.725672][ T10] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver
[ 4.062323][ T524] kworker/u8:7 (524) used greatest stack depth: 26904 bytes left
[ 4.258630][ T1] N_HDLC line discipline registered with maxframe=4096
[ 4.261364][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 4.275999][ T1] 00:02: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 4.291450][ T1] 00:03: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A
[ 4.306966][ T1] 00:04: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A
[ 4.321856][ T1] 00:05: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A
[ 4.357497][ T1] Non-volatile memory driver v1.3
[ 4.382848][ T1] usbcore: registered new interface driver xillyusb
[ 4.391825][ T1] ACPI: bus type drm_connector registered
[ 4.402882][ T1] [drm] Initialized vgem 1.0.0 for vgem on minor 0
[ 4.408272][ T1] ------------[ cut here ]------------
[ 4.409057][ T1] [PLANE:35:plane-0] pixel format with alpha exposed but blend mode not setup
[ 4.409076][ T1] WARNING: drivers/gpu/drm/drm_mode_config.c:872 at drm_mode_config_validate+0xfb4/0x1be0, CPU#0: swapper/0/1
[ 4.412353][ T1] Modules linked in:
[ 4.412951][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 4.414327][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
[ 4.415957][ T1] RIP: 0010:drm_mode_config_validate+0xfbb/0x1be0
[ 4.416871][ T1] Code: 00 49 8b 57 18 48 89 f8 48 c1 e8 03 0f b6 04 28 84 c0 74 08 3c 03 0f 8e 00 0b 00 00 48 8d 3d fc 1e 81 0b 41 8b b7 c8 00 00 00 <67> 48 0f b9 3a e9 fa fd ff ff 48 8b 5c 24 20 e8 41 9b 3c fc 48 8d
[ 4.420277][ T1] RSP: 0000:ffffc90000067c18 EFLAGS: 00010246
[ 4.421416][ T1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 4.422525][ T1] RDX: ffff8880270d17e0 RSI: 0000000000000023 RDI: ffffffff914f9750
[ 4.423790][ T1] RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000
[ 4.424912][ T1] R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1004db7023
[ 4.426628][ T1] R13: ffffed1004db7024 R14: 0000000000000001 R15: ffff888026db8028
[ 4.427965][ T1] FS: 0000000000000000(0000) GS:ffff888123b83000(0000) knlGS:0000000000000000
[ 4.429922][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4.431232][ T1] CR2: ffff88823ffff000 CR3: 000000000eb94000 CR4: 00000000003526f0
[ 4.432829][ T1] Call Trace:
[ 4.433578][ T1] <TASK>
[ 4.434377][ T1] drm_dev_register+0x56e/0x7b0
[ 4.435116][ T1] vkms_create+0x491/0x5b0
[ 4.436303][ T1] ? __pfx_vkms_init+0x10/0x10
[ 4.437097][ T1] vkms_init+0x98/0xe0
[ 4.437725][ T1] do_one_initcall+0x11c/0x6f0
[ 4.438689][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 4.439912][ T1] ? kasan_unpoison+0x15/0x60
[ 4.440799][ T1] ? kernel_init_freeable+0x4ca/0x7b0
[ 4.441810][ T1] kernel_init_freeable+0x6ea/0x7b0
[ 4.442739][ T1] ? __pfx_kernel_init+0x10/0x10
[ 4.443755][ T1] kernel_init+0x21/0x1e0
[ 4.444481][ T1] ? __pfx_kernel_init+0x10/0x10
[ 4.445296][ T1] ret_from_fork+0x730/0xd60
[ 4.446009][ T1] ? __pfx_ret_from_fork+0x10/0x10
[ 4.446941][ T1] ? __switch_to+0x800/0x10f0
[ 4.448149][ T1] ? __pfx_kernel_init+0x10/0x10
[ 4.448847][ T1] ret_from_fork_asm+0x1a/0x30
[ 4.449585][ T1] </TASK>
[ 4.450241][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 4.451670][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 4.453007][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
[ 4.454566][ T1] Call Trace:
[ 4.455144][ T1] <TASK>
[ 4.455713][ T1] dump_stack_lvl+0x100/0x190
[ 4.455982][ T1] vpanic+0x553/0x970
[ 4.455982][ T1] ? __pfx_vpanic+0x10/0x10
[ 4.455982][ T1] panic+0xd1/0xe0
[ 4.455982][ T1] ? __pfx_panic+0x10/0x10
[ 4.455982][ T1] check_panic_on_warn.cold+0x19/0x34
[ 4.455982][ T1] ? drm_mode_config_validate+0xfb4/0x1be0
[ 4.455982][ T1] __warn.cold+0x191/0x318
[ 4.455982][ T1] __report_bug+0x30f/0x440
[ 4.455982][ T1] ? drm_mode_config_validate+0xfb4/0x1be0
[ 4.455982][ T1] ? __pfx___report_bug+0x10/0x10
[ 4.455982][ T1] ? __lock_acquire+0x4c5/0x1ec0
[ 4.455982][ T1] report_bug_entry+0xe2/0x290
[ 4.455982][ T1] ? drm_mode_config_validate+0xfbb/0x1be0
[ 4.455982][ T1] handle_bug+0x1cd/0x2a0
[ 4.455982][ T1] exc_invalid_op+0x17/0x50
[ 4.455982][ T1] asm_exc_invalid_op+0x1a/0x20
[ 4.455982][ T1] RIP: 0010:drm_mode_config_validate+0xfbb/0x1be0
[ 4.455982][ T1] Code: 00 49 8b 57 18 48 89 f8 48 c1 e8 03 0f b6 04 28 84 c0 74 08 3c 03 0f 8e 00 0b 00 00 48 8d 3d fc 1e 81 0b 41 8b b7 c8 00 00 00 <67> 48 0f b9 3a e9 fa fd ff ff 48 8b 5c 24 20 e8 41 9b 3c fc 48 8d
[ 4.455982][ T1] RSP: 0000:ffffc90000067c18 EFLAGS: 00010246
[ 4.455982][ T1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 4.455982][ T1] RDX: ffff8880270d17e0 RSI: 0000000000000023 RDI: ffffffff914f9750
[ 4.455982][ T1] RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000
[ 4.455982][ T1] R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1004db7023
[ 4.455982][ T1] R13: ffffed1004db7024 R14: 0000000000000001 R15: ffff888026db8028
[ 4.455982][ T1] ? drm_mode_config_validate+0xf76/0x1be0
[ 4.455982][ T1] drm_dev_register+0x56e/0x7b0
[ 4.455982][ T1] vkms_create+0x491/0x5b0
[ 4.455982][ T1] ? __pfx_vkms_init+0x10/0x10
[ 4.455982][ T1] vkms_init+0x98/0xe0
[ 4.455982][ T1] do_one_initcall+0x11c/0x6f0
[ 4.455982][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 4.455982][ T1] ? kasan_unpoison+0x15/0x60
[ 4.455982][ T1] ? kernel_init_freeable+0x4ca/0x7b0
[ 4.455982][ T1] kernel_init_freeable+0x6ea/0x7b0
[ 4.455982][ T1] ? __pfx_kernel_init+0x10/0x10
[ 4.455982][ T1] kernel_init+0x21/0x1e0
[ 4.455982][ T1] ? __pfx_kernel_init+0x10/0x10
[ 4.455982][ T1] ret_from_fork+0x730/0xd60
[ 4.455982][ T1] ? __pfx_ret_from_fork+0x10/0x10
[ 4.455982][ T1] ? __switch_to+0x800/0x10f0
[ 4.455982][ T1] ? __pfx_kernel_init+0x10/0x10
[ 4.455982][ T1] ret_from_fork_asm+0x1a/0x30
[ 4.455982][ T1] </TASK>
[ 4.455982][ T1] Kernel Offset: disabled
[ 4.455982][ T1] Rebooting in 86400 seconds..
syzkaller build log:
go env (err=<nil>)
AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE='auto'
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build1331161525=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod'
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'
GOTELEMETRY='local'
GOTELEMETRYDIR='/syzkaller/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.26.0'
GOWORK=''
PKG_CONFIG='pkg-config'
git status (err=<nil>)
HEAD detached at 05b26a281c0
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:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=05b26a281c072cc34dcad83a283fd2aeeff18ad1 -X github.com/google/syzkaller/prog.gitRevisionDate=20260724-140511" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=05b26a281c072cc34dcad83a283fd2aeeff18ad1 -X github.com/google/syzkaller/prog.gitRevisionDate=20260724-140511" ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=05b26a281c072cc34dcad83a283fd2aeeff18ad1 -X github.com/google/syzkaller/prog.gitRevisionDate=20260724-140511" -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_amd64
g++ -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 -std=c++17 -I. -Iexecutor/_include -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"05b26a281c072cc34dcad83a283fd2aeeff18ad1\"
/usr/bin/ld: /tmp/ccXjEkJ3.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x386): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
./tools/check-syzos.sh 2>/dev/null
Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=11d04625580000
Tested on:
commit: 66fb95a5 Merge tag 'caps-pr-20260820' of git://git.ker..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=49d6006e566a6d95
dashboard link: https://syzkaller.appspot.com/bug?extid=227dbc9afd022922d624
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
Note: no patches were applied.