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Message-ID: <000000000000d1cedb061b978414@google.com>
Date: Sun, 23 Jun 2024 17:04:02 -0700
From: syzbot <syzbot+3da70a0abd7f5765b6ea@...kaller.appspotmail.com>
To: jain.abhinav177@...il.com, linux-kernel@...r.kernel.org,
syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [net?] [nfc?] KMSAN: uninit-value in nci_rx_work (2)
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
] #0: Dummy 1
[ 50.290416][ T1] #1: Loopback 1
[ 50.294263][ T1] #2: Virtual MIDI Card 1
[ 50.304625][ T43] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 50.314614][ T43] platform regulatory.0: Falling back to sysfs fallback for: regulatory.db
[ 50.324047][ T1] md: Waiting for all devices to be available before autodetect
[ 50.331941][ T1] md: If you don't use raid, use raid=noautodetect
[ 50.338762][ T1] md: Autodetecting RAID arrays.
[ 50.343816][ T1] md: autorun ...
[ 50.347560][ T1] md: ... autorun DONE.
[ 50.453970][ T1] EXT4-fs (sda1): mounted filesystem 5941fea2-f5fa-4b4e-b5ef-9af118b27b95 ro with ordered data mode. Quota mode: none.
[ 50.467611][ T1] VFS: Mounted root (ext4 filesystem) readonly on device 8:1.
[ 50.480291][ T1] devtmpfs: mounted
[ 50.746398][ T1] Freeing unused kernel image (initmem) memory: 37044K
[ 50.758376][ T1] Write protecting the kernel read-only data: 262144k
[ 50.805347][ T1] Freeing unused kernel image (rodata/data gap) memory: 1804K
[ 52.468982][ T1] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 52.479558][ T1] x86/mm: Checking user space page tables
[ 53.988075][ T1] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 53.997244][ T1] Failed to set sysctl parameter 'kernel.hung_task_all_cpu_backtrace=1': parameter not found
[ 54.019291][ T1] Failed to set sysctl parameter 'max_rcu_stall_to_panic=1': parameter not found
[ 54.031476][ T1] Run /sbin/init as init process
[ 55.633180][ T4452] mount (4452) used greatest stack depth: 8144 bytes left
[ 55.708282][ T4453] EXT4-fs (sda1): re-mounted 5941fea2-f5fa-4b4e-b5ef-9af118b27b95 r/w. Quota mode: none.
mount: mounting smackfs on /sys/fs/smackfs failed: No such file or directory
mount: mounting selinuxfs on /sys/fs/selinux failed: No such file or directory
[ 56.045994][ T4456] mount (4456) used greatest stack depth: 5568 bytes left
Starting syslogd: OK
Starting acpid: OK
Starting klogd: OK
Running sysctl: OK
Populating /dev using udev: [ 59.872511][ T4486] udevd[4486]: starting version 3.2.11
[ 63.427094][ T4487] udevd[4487]: starting eudev-3.2.11
[ 63.439898][ T4486] udevd (4486) used greatest stack depth: 5312 bytes left
[ 75.915745][ T4504] v4l_id (4504) used greatest stack depth: 5040 bytes left
done
Starting system message bus: done
Starting iptables: OK
Starting network: OK
Starting dhcpcd...
dhcpcd-9.4.1 starting
dev: loaded udev
DUID 00:04:98:24:4c:28:99:7c:d9:70:fe:51:ca:fe:56:33:2c:7d
forked to background, child pid 4700
[ 111.302294][ T4701] 8021q: adding VLAN 0 to HW filter on device bond0
[ 111.356959][ T4701] eql: remember to turn off Van-Jacobson compression on your slave devices
[ 111.675306][ T43] cfg80211: failed to load regulatory.db
Starting sshd: OK
[ 113.974849][ C0] =====================================================
[ 113.982193][ C0] BUG: KMSAN: uninit-value in receive_buf+0x2620/0x6070
[ 113.989359][ C0] receive_buf+0x2620/0x6070
[ 113.994223][ C0] virtnet_poll+0xd1c/0x23c0
[ 113.999046][ C0] __napi_poll+0xe7/0x980
[ 114.003560][ C0] net_rx_action+0x82a/0x1850
[ 114.008538][ C0] handle_softirqs+0x1ce/0x800
[ 114.013480][ C0] __irq_exit_rcu+0x68/0x120
[ 114.018306][ C0] irq_exit_rcu+0x12/0x20
[ 114.022880][ C0] common_interrupt+0x94/0xa0
[ 114.027696][ C0] asm_common_interrupt+0x2b/0x40
[ 114.033033][ C0] filter_irq_stacks+0xde/0x1a0
[ 114.038201][ C0] stack_depot_save_flags+0x2c/0x6e0
[ 114.043785][ C0] stack_depot_save+0x12/0x20
syzkaller[ 114.048885][ C0] kmsan_internal_poison_memory+0x5d/0x90
[ 114.055418][ C0] kmsan_slab_alloc+0xdf/0x160
syzkaller login[ 114.060451][ C0] kmem_cache_alloc_noprof+0x637/0xb20
: [ 114.067309][ C0] vm_area_dup+0x5c/0x620
[ 114.072098][ C0] copy_mm+0x1951/0x3ca0
[ 114.076529][ C0] copy_process+0x26f7/0x5b90
[ 114.081439][ C0] kernel_clone+0x401/0x1040
[ 114.086216][ C0] __x64_sys_clone+0x25c/0x360
[ 114.091237][ C0] x64_sys_call+0x2a45/0x3b90
[ 114.096111][ C0] do_syscall_64+0xcd/0x1e0
[ 114.100832][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 114.107039][ C0]
[ 114.109519][ C0] Uninit was created at:
[ 114.113933][ C0] __alloc_pages_noprof+0x9d6/0xe70
[ 114.119382][ C0] alloc_pages_mpol_noprof+0x299/0x990
[ 114.125055][ C0] alloc_pages_noprof+0x1bf/0x1e0
[ 114.130351][ C0] skb_page_frag_refill+0x2bf/0x7c0
[ 114.135882][ C0] virtnet_rq_alloc+0x43/0xbb0
[ 114.140928][ C0] try_fill_recv+0x3f0/0x2f50
[ 114.145767][ C0] virtnet_open+0x1cc/0xb00
[ 114.150504][ C0] __dev_open+0x546/0x6f0
[ 114.154987][ C0] __dev_change_flags+0x309/0x9a0
[ 114.160485][ C0] dev_change_flags+0x8e/0x1d0
[ 114.165494][ C0] devinet_ioctl+0x13ec/0x22c0
[ 114.170508][ C0] inet_ioctl+0x4bd/0x6d0
[ 114.175025][ C0] sock_do_ioctl+0xb7/0x540
[ 114.179744][ C0] sock_ioctl+0x727/0xd70
[ 114.184245][ C0] __se_sys_ioctl+0x261/0x450
[ 114.189151][ C0] __x64_sys_ioctl+0x96/0xe0
[ 114.193930][ C0] x64_sys_call+0x18c0/0x3b90
[ 114.198943][ C0] do_syscall_64+0xcd/0x1e0
[ 114.203635][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 114.209795][ C0]
[ 114.212287][ C0] CPU: 0 PID: 4798 Comm: dhcpcd-run-hook Not tainted 6.10.0-rc5-syzkaller-gf2661062f16b-dirty #0
[ 114.223065][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 114.233500][ C0] =====================================================
[ 114.240777][ C0] Disabling lock debugging due to kernel taint
[ 114.246986][ C0] Kernel panic - not syncing: kmsan.panic set ...
[ 114.253452][ C0] CPU: 0 PID: 4798 Comm: dhcpcd-run-hook Tainted: G B 6.10.0-rc5-syzkaller-gf2661062f16b-dirty #0
[ 114.265699][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 114.275830][ C0] Call Trace:
[ 114.279210][ C0] <IRQ>
[ 114.282205][ C0] dump_stack_lvl+0x216/0x2d0
[ 114.287023][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0
[ 114.292958][ C0] dump_stack+0x1e/0x30
[ 114.297237][ C0] panic+0x4e2/0xcd0
[ 114.301260][ C0] ? kmsan_get_metadata+0x51/0x1d0
[ 114.306661][ C0] kmsan_report+0x2d5/0x2e0
[ 114.311406][ C0] ? kmsan_get_metadata+0x146/0x1d0
[ 114.316739][ C0] ? __msan_warning+0x95/0x120
[ 114.321632][ C0] ? receive_buf+0x2620/0x6070
[ 114.326511][ C0] ? virtnet_poll+0xd1c/0x23c0
[ 114.331381][ C0] ? __napi_poll+0xe7/0x980
[ 114.336102][ C0] ? net_rx_action+0x82a/0x1850
[ 114.341086][ C0] ? handle_softirqs+0x1ce/0x800
[ 114.346134][ C0] ? __irq_exit_rcu+0x68/0x120
[ 114.351082][ C0] ? irq_exit_rcu+0x12/0x20
[ 114.355691][ C0] ? common_interrupt+0x94/0xa0
[ 114.360663][ C0] ? asm_common_interrupt+0x2b/0x40
[ 114.365979][ C0] ? filter_irq_stacks+0xde/0x1a0
[ 114.371122][ C0] ? stack_depot_save_flags+0x2c/0x6e0
[ 114.376810][ C0] ? stack_depot_save+0x12/0x20
[ 114.381868][ C0] ? kmsan_internal_poison_memory+0x5d/0x90
[ 114.387980][ C0] ? kmsan_slab_alloc+0xdf/0x160
[ 114.393063][ C0] ? kmem_cache_alloc_noprof+0x637/0xb20
[ 114.398930][ C0] ? vm_area_dup+0x5c/0x620
[ 114.403560][ C0] ? copy_mm+0x1951/0x3ca0
[ 114.408257][ C0] ? copy_process+0x26f7/0x5b90
[ 114.413209][ C0] ? kernel_clone+0x401/0x1040
[ 114.418183][ C0] ? __x64_sys_clone+0x25c/0x360
[ 114.423314][ C0] ? x64_sys_call+0x2a45/0x3b90
[ 114.428288][ C0] ? do_syscall_64+0xcd/0x1e0
[ 114.433083][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 114.439278][ C0] ? kmsan_internal_memmove_metadata+0x17b/0x230
[ 114.446250][ C0] ? kmsan_get_metadata+0x146/0x1d0
[ 114.451579][ C0] ? kmsan_get_metadata+0x146/0x1d0
[ 114.456996][ C0] ? page_to_skb+0xdae/0x1620
[ 114.461963][ C0] __msan_warning+0x95/0x120
[ 114.466645][ C0] receive_buf+0x2620/0x6070
[ 114.471342][ C0] ? kmsan_get_metadata+0x146/0x1d0
[ 114.476662][ C0] virtnet_poll+0xd1c/0x23c0
[ 114.481407][ C0] ? __pfx_virtnet_poll+0x10/0x10
[ 114.486598][ C0] __napi_poll+0xe7/0x980
[ 114.491088][ C0] ? kmsan_get_metadata+0x146/0x1d0
[ 114.496605][ C0] net_rx_action+0x82a/0x1850
[ 114.501407][ C0] ? sched_clock_cpu+0x55/0x870
[ 114.506377][ C0] ? __pfx_net_rx_action+0x10/0x10
[ 114.511576][ C0] handle_softirqs+0x1ce/0x800
[ 114.516463][ C0] __irq_exit_rcu+0x68/0x120
[ 114.521162][ C0] irq_exit_rcu+0x12/0x20
[ 114.525580][ C0] common_interrupt+0x94/0xa0
[ 114.530379][ C0] </IRQ>
[ 114.533378][ C0] <TASK>
[ 114.536354][ C0] asm_common_interrupt+0x2b/0x40
[ 114.541507][ C0] RIP: 0010:filter_irq_stacks+0xde/0x1a0
[ 114.547378][ C0] Code: 00 20 d9 0f 85 8e 00 00 00 20 d0 0f 85 86 00 00 00 45 84 f6 0f 85 9a 00 00 00 48 c7 c2 00 da 8b 8f 49 39 d7 0f 93 c1 49 39 d4 <0f> 93 c0 30 c8 49 39 d5 0f 93 c1 48 c7 c6 2a da 8b 8f 49 39 f7 0f
[ 114.567111][ C0] RSP: 0018:ffff8881193af590 EFLAGS: 00000206
[ 114.573266][ C0] RAX: ffff888118baf600 RBX: ffff8881193af600 RCX: 0000000118faf601
[ 114.581326][ C0] RDX: ffffffff8f8bda00 RSI: ffffffff8fa01830 RDI: 0000000000000000
[ 114.589376][ C0] RBP: ffff8881193af5e0 R08: ffffea000000000f R09: ffff8881193ac000
[ 114.597436][ C0] R10: ffff8881193af568 R11: ffffffff81935550 R12: ffffffff8fa00130
[ 114.605587][ C0] R13: ffffffff8fa00130 R14: 0000000018faf600 R15: ffffffff8fa00130
[ 114.613839][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 114.620124][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 114.626504][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 114.632816][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10
[ 114.639139][ C0] ? __lock_text_end+0x7/0x7
[ 114.643855][ C0] ? asm_sysvec_kvm_asyncpf_interrupt+0x30/0x30
[ 114.650338][ C0] stack_depot_save_flags+0x2c/0x6e0
[ 114.655772][ C0] ? stack_trace_save+0xb5/0xe0
[ 114.660782][ C0] stack_depot_save+0x12/0x20
[ 114.665789][ C0] kmsan_internal_poison_memory+0x5d/0x90
[ 114.671640][ C0] ? kmsan_internal_poison_memory+0x49/0x90
[ 114.677660][ C0] ? kmsan_slab_alloc+0xdf/0x160
[ 114.682719][ C0] ? kmem_cache_alloc_noprof+0x637/0xb20
[ 114.688546][ C0] ? vm_area_dup+0x5c/0x620
[ 114.693160][ C0] ? copy_mm+0x1951/0x3ca0
[ 114.697671][ C0] ? copy_process+0x26f7/0x5b90
[ 114.702623][ C0] ? kernel_clone+0x401/0x1040
[ 114.707494][ C0] ? __x64_sys_clone+0x25c/0x360
[ 114.712540][ C0] ? x64_sys_call+0x2a45/0x3b90
[ 114.717614][ C0] ? do_syscall_64+0xcd/0x1e0
[ 114.722445][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 114.728653][ C0] ? kmsan_get_metadata+0x146/0x1d0
[ 114.733972][ C0] ? kmsan_get_metadata+0x146/0x1d0
[ 114.739443][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0
[ 114.745375][ C0] ? kmem_cache_alloc_noprof+0x67/0xb20
[ 114.751025][ C0] ? filter_irq_stacks+0x164/0x1a0
[ 114.756260][ C0] ? kmsan_get_metadata+0x146/0x1d0
[ 114.761588][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0
[ 114.767673][ C0] ? kmsan_get_metadata+0x146/0x1d0
[ 114.773074][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0
[ 114.779113][ C0] kmsan_slab_alloc+0xdf/0x160
[ 114.784111][ C0] kmem_cache_alloc_noprof+0x637/0xb20
[ 114.789862][ C0] ? vm_area_dup+0x5c/0x620
[ 114.794498][ C0] vm_area_dup+0x5c/0x620
[ 114.798938][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0
[ 114.804919][ C0] copy_mm+0x1951/0x3ca0
[ 114.809322][ C0] copy_process+0x26f7/0x5b90
[ 114.814163][ C0] kernel_clone+0x401/0x1040
[ 114.818876][ C0] ? kmsan_get_metadata+0x146/0x1d0
[ 114.824179][ C0] ? kmsan_get_metadata+0x146/0x1d0
[ 114.829512][ C0] ? __msan_memset+0xf5/0x1b0
[ 114.834295][ C0] __x64_sys_clone+0x25c/0x360
[ 114.839200][ C0] x64_sys_call+0x2a45/0x3b90
[ 114.844021][ C0] do_syscall_64+0xcd/0x1e0
[ 114.848674][ C0] ? clear_bhb_loop+0x25/0x80
[ 114.853671][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 114.859833][ C0] RIP: 0033:0x7ff7d4148a12
[ 114.864486][ C0] Code: 41 5d 41 5e 41 5f c3 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 10 48 8b 15 e7 43 0f 00 f7 d8 64 89 02 48 83
[ 114.884483][ C0] RSP: 002b:00007ffedc1768e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[ 114.893097][ C0] RAX: ffffffffffffffda RBX: 000055b417f4a901 RCX: 00007ff7d4148a12
[ 114.901171][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[ 114.909328][ C0] RBP: 000055b417f4bb70 R08: 0000000000000000 R09: 3c00000000001001
[ 114.917758][ C0] R10: 00007ff7d400e650 R11: 0000000000000246 R12: 000055b417f58640
[ 114.925841][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 114.933934][ C0] </TASK>
[ 114.937451][ C0] Kernel Offset: disabled
[ 114.942128][ C0] Rebooting in 86400 seconds..
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-build2361823076=/tmp/go-build -gno-record-gcc-switches'
git status (err=<nil>)
HEAD detached at 121701b623
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}}' ./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
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
go fmt ./sys/... >/dev/null
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=121701b62358a454bbfdccfadfcce9bb843602d6 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240605-134717'" "-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=121701b62358a454bbfdccfadfcce9bb843602d6 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240605-134717'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -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 -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"121701b62358a454bbfdccfadfcce9bb843602d6\"
Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=177d808e980000
Tested on:
commit: f2661062 Linux 6.10-rc5
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=246bf67bb6aae1e4
dashboard link: https://syzkaller.appspot.com/bug?extid=3da70a0abd7f5765b6ea
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=1506683e980000
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