Hello, syzbot tried to test the proposed patch but the build/boot failed: 6.343044][ T1] openvswitch: Open vSwitch switching datapath [ 46.363888][ T1] NET: Registered PF_VSOCK protocol family [ 46.372367][ T1] mpls_gso: MPLS GSO support [ 46.524387][ T1] IPI shorthand broadcast: enabled [ 48.017346][ T1] sched_clock: Marking stable (47990050167, 17795964)->(48016243838, -8397707) [ 49.133874][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level [ 49.302883][ T1] registered taskstats version 1 [ 49.367583][ T1] Loading compiled-in X.509 certificates [ 49.405812][ T1] Loaded X.509 cert 'Build time autogenerated kernel key: ef5392d16e2343e2e997a1a8439f31430dca794f' [ 49.643401][ T1] zswap: loaded using pool lzo/zsmalloc [ 49.652895][ T1] Demotion targets for Node 0: null [ 49.658483][ T1] Demotion targets for Node 1: null [ 49.665807][ T1] Key type .fscrypt registered [ 49.672365][ T1] Key type fscrypt-provisioning registered [ 49.679915][ T1] kAFS: Red Hat AFS client v0.1 registering. [ 49.713149][ T1] Btrfs loaded, assert=on, ref-verify=on, zoned=yes, fsverity=yes [ 49.740050][ T1] Key type encrypted registered [ 49.745095][ T1] AppArmor: AppArmor sha256 policy hashing enabled [ 49.753397][ T1] ima: No TPM chip found, activating TPM-bypass! [ 49.759983][ T1] Loading compiled-in module X.509 certificates [ 49.802303][ T1] Loaded X.509 cert 'Build time autogenerated kernel key: ef5392d16e2343e2e997a1a8439f31430dca794f' [ 49.813515][ T1] ima: Allocated hash algorithm: sha256 [ 49.819655][ T1] ima: No architecture policies found [ 49.826134][ T1] evm: Initialising EVM extended attributes: [ 49.832247][ T1] evm: security.selinux (disabled) [ 49.837410][ T1] evm: security.SMACK64 (disabled) [ 49.842758][ T1] evm: security.SMACK64EXEC (disabled) [ 49.848460][ T1] evm: security.SMACK64TRANSMUTE (disabled) [ 49.854407][ T1] evm: security.SMACK64MMAP (disabled) [ 49.860131][ T1] evm: security.apparmor [ 49.864545][ T1] evm: security.ima [ 49.868491][ T1] evm: security.capability [ 49.872958][ T1] evm: HMAC attrs: 0x1 [ 49.882187][ T1] PM: Magic number: 12:875:156 [ 49.888285][ T1] usb usb36-port7: hash matches [ 49.894166][ T1] bdi 1:8: hash matches [ 49.900642][ T1] printk: legacy console [netcon0] enabled [ 49.906787][ T1] netconsole: network logging started [ 49.913765][ T1] gtp: GTP module loaded (pdp ctx size 128 bytes) [ 49.922755][ T1] rdma_rxe: loaded [ 49.928813][ T1] cfg80211: Loading compiled-in X.509 certificates for regulatory database [ 49.950799][ T1] Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7' [ 49.969818][ T1] Loaded X.509 cert 'wens: 61c038651aabdcf94bd0ac7ff06c7248db18c600' [ 49.978593][ T1] clk: Disabling unused clocks [ 49.983531][ T1] ALSA device list: [ 49.987431][ T1] #0: Dummy 1 [ 49.991050][ T1] #1: Loopback 1 [ 49.994878][ T1] #2: Virtual MIDI Card 1 [ 50.005050][ T10] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2 [ 50.014970][ T10] platform regulatory.0: Falling back to sysfs fallback for: regulatory.db [ 50.024723][ T1] md: Waiting for all devices to be available before autodetect [ 50.032705][ T1] md: If you don't use raid, use raid=noautodetect [ 50.039465][ T1] md: Autodetecting RAID arrays. [ 50.044595][ T1] md: autorun ... [ 50.048512][ T1] md: ... autorun DONE. [ 50.117733][ T1] EXT4-fs (sda1): mounted filesystem 5941fea2-f5fa-4b4e-b5ef-9af118b27b95 ro with ordered data mode. Quota mode: none. [ 50.131603][ T1] VFS: Mounted root (ext4 filesystem) readonly on device 8:1. [ 50.144403][ T1] devtmpfs: mounted [ 50.408360][ T1] Freeing unused kernel image (initmem) memory: 37036K [ 50.420188][ T1] Write protecting the kernel read-only data: 262144k [ 50.467096][ T1] Freeing unused kernel image (rodata/data gap) memory: 1804K [ 52.119267][ T1] x86/mm: Checked W+X mappings: passed, no W+X pages found. [ 52.129621][ T1] x86/mm: Checking user space page tables [ 53.636226][ T1] x86/mm: Checked W+X mappings: passed, no W+X pages found. [ 53.645529][ T1] Failed to set sysctl parameter 'kernel.hung_task_all_cpu_backtrace=1': parameter not found [ 53.666750][ T1] Failed to set sysctl parameter 'max_rcu_stall_to_panic=1': parameter not found [ 53.678915][ T1] Run /sbin/init as init process [ 55.261831][ T4447] mount (4447) used greatest stack depth: 7808 bytes left [ 55.340544][ T4448] 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 [ 55.675477][ T4451] mount (4451) used greatest stack depth: 5568 bytes left Starting syslogd: OK Starting acpid: OK Starting klogd: OK Running sysctl: OK Populating /dev using udev: [ 59.510303][ T4481] udevd[4481]: starting version 3.2.11 [ 63.097528][ T4482] udevd[4482]: starting eudev-3.2.11 [ 63.110491][ T4481] udevd (4481) used greatest stack depth: 5232 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:c7:fd:4a:df:9d:a6:e9:60:55:7b:b4:5b:1f:77:00:5c forked to background, child pid 4695 [ 110.977706][ T4696] 8021q: adding VLAN 0 to HW filter on device bond0 [ 111.031404][ T4696] eql: remember to turn off Van-Jacobson compression on your slave devices [ 111.650739][ T10] cfg80211: failed to load regulatory.db Starting sshd: OK syzkaller syzkaller login: [ 114.063784][ C0] ===================================================== [ 114.071021][ C0] BUG: KMSAN: uninit-value in receive_buf+0x25e3/0x5fd0 [ 114.078922][ C0] receive_buf+0x25e3/0x5fd0 [ 114.083796][ C0] virtnet_poll+0xd1c/0x23c0 [ 114.088752][ C0] __napi_poll+0xe7/0x980 [ 114.093517][ C0] net_rx_action+0x82a/0x1850 [ 114.098512][ C0] handle_softirqs+0x1ce/0x800 [ 114.103581][ C0] __irq_exit_rcu+0x68/0x120 [ 114.108412][ C0] irq_exit_rcu+0x12/0x20 [ 114.112996][ C0] common_interrupt+0x94/0xa0 [ 114.118086][ C0] asm_common_interrupt+0x2b/0x40 [ 114.123480][ C0] __msan_metadata_ptr_for_load_8+0x18/0x40 [ 114.129797][ C0] filemap_map_pages+0xe81/0x2e30 [ 114.135034][ C0] handle_mm_fault+0x6f36/0xe610 [ 114.140206][ C0] exc_page_fault+0x41b/0x700 [ 114.145072][ C0] asm_exc_page_fault+0x2b/0x30 [ 114.150167][ C0] [ 114.152572][ C0] Uninit was created at: [ 114.156953][ C0] __alloc_pages_noprof+0x9d6/0xe70 [ 114.162368][ C0] alloc_pages_mpol_noprof+0x299/0x990 [ 114.168132][ C0] alloc_pages_noprof+0x1bf/0x1e0 [ 114.173274][ C0] skb_page_frag_refill+0x2bf/0x7c0 [ 114.178692][ C0] virtnet_rq_alloc+0x43/0xbb0 [ 114.183610][ C0] try_fill_recv+0x3f0/0x2f50 [ 114.188492][ C0] virtnet_open+0x1cc/0xb00 [ 114.193392][ C0] __dev_open+0x546/0x6f0 [ 114.197955][ C0] __dev_change_flags+0x309/0x9a0 [ 114.203263][ C0] dev_change_flags+0x8e/0x1d0 [ 114.208266][ C0] devinet_ioctl+0x13ec/0x22c0 [ 114.213265][ C0] inet_ioctl+0x4bd/0x6d0 [ 114.217709][ C0] sock_do_ioctl+0xb7/0x540 [ 114.222474][ C0] sock_ioctl+0x727/0xd70 [ 114.226915][ C0] __se_sys_ioctl+0x261/0x450 [ 114.231888][ C0] __x64_sys_ioctl+0x96/0xe0 [ 114.236624][ C0] x64_sys_call+0x18c0/0x3b90 [ 114.241782][ C0] do_syscall_64+0xcd/0x1e0 [ 114.246586][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 114.252971][ C0] [ 114.255409][ C0] CPU: 0 PID: 4803 Comm: rm Not tainted 6.10.0-rc3-syzkaller-00102-ga3027fbd92ad #0 [ 114.265197][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 114.275517][ C0] ===================================================== [ 114.282666][ C0] Disabling lock debugging due to kernel taint [ 114.289094][ C0] Kernel panic - not syncing: kmsan.panic set ... [ 114.295774][ C0] CPU: 0 PID: 4803 Comm: rm Tainted: G B 6.10.0-rc3-syzkaller-00102-ga3027fbd92ad #0 [ 114.307012][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 114.317158][ C0] Call Trace: [ 114.320500][ C0] <IRQ> [ 114.323392][ C0] dump_stack_lvl+0x216/0x2d0 [ 114.328201][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 114.334149][ C0] dump_stack+0x1e/0x30 [ 114.338426][ C0] panic+0x4e2/0xcd0 [ 114.342445][ C0] ? kmsan_get_metadata+0xb1/0x1d0 [ 114.348148][ C0] kmsan_report+0x2d5/0x2e0 [ 114.352948][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.358285][ C0] ? __msan_warning+0x95/0x120 [ 114.363159][ C0] ? receive_buf+0x25e3/0x5fd0 [ 114.368024][ C0] ? virtnet_poll+0xd1c/0x23c0 [ 114.372882][ C0] ? __napi_poll+0xe7/0x980 [ 114.377788][ C0] ? net_rx_action+0x82a/0x1850 [ 114.382798][ C0] ? handle_softirqs+0x1ce/0x800 [ 114.387868][ C0] ? __irq_exit_rcu+0x68/0x120 [ 114.392766][ C0] ? irq_exit_rcu+0x12/0x20 [ 114.397357][ C0] ? common_interrupt+0x94/0xa0 [ 114.402324][ C0] ? asm_common_interrupt+0x2b/0x40 [ 114.407634][ C0] ? __msan_metadata_ptr_for_load_8+0x18/0x40 [ 114.413807][ C0] ? filemap_map_pages+0xe81/0x2e30 [ 114.419117][ C0] ? handle_mm_fault+0x6f36/0xe610 [ 114.424461][ C0] ? exc_page_fault+0x41b/0x700 [ 114.429619][ C0] ? asm_exc_page_fault+0x2b/0x30 [ 114.434797][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.440132][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.445631][ C0] ? kmsan_internal_memmove_metadata+0x17b/0x230 [ 114.452123][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.457453][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.462794][ C0] ? page_to_skb+0xdae/0x1620 [ 114.467694][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.473057][ C0] __msan_warning+0x95/0x120 [ 114.477746][ C0] receive_buf+0x25e3/0x5fd0 [ 114.482558][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.488004][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 114.493964][ C0] virtnet_poll+0xd1c/0x23c0 [ 114.498684][ C0] ? __pfx_virtnet_poll+0x10/0x10 [ 114.503816][ C0] __napi_poll+0xe7/0x980 [ 114.508269][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.513605][ C0] net_rx_action+0x82a/0x1850 [ 114.518407][ C0] ? sched_clock_cpu+0x55/0x870 [ 114.523437][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 114.528662][ C0] handle_softirqs+0x1ce/0x800 [ 114.533665][ C0] __irq_exit_rcu+0x68/0x120 [ 114.538379][ C0] irq_exit_rcu+0x12/0x20 [ 114.542838][ C0] common_interrupt+0x94/0xa0 [ 114.547656][ C0] </IRQ> [ 114.550894][ C0] <TASK> [ 114.553890][ C0] asm_common_interrupt+0x2b/0x40 [ 114.559040][ C0] RIP: 0010:__msan_metadata_ptr_for_load_8+0x18/0x40 [ 114.565833][ C0] Code: 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 53 48 83 ec 10 9c 8f 45 e8 0f 01 ca 48 8b 5d e8 <be> 08 00 00 00 31 d2 e8 9c 25 00 00 48 89 5d f0 ff 75 f0 9d 48 83 [ 114.585747][ C0] RSP: 0000:ffff88811852fa60 EFLAGS: 00000286 [ 114.591926][ C0] RAX: 0000000000000000 RBX: 0000000000000286 RCX: ffff888116094180 [ 114.600091][ C0] RDX: 0000000000000000 RSI: 0000000000000036 RDI: ffff88811852fa90 [ 114.608158][ C0] RBP: ffff88811852fa78 R08: ffffffff8203f34a R09: ffffffff8203e5a8 [ 114.616220][ C0] R10: 0000000000000002 R11: ffff888116094180 R12: 0000000002b000d1 [ 114.624272][ C0] R13: 000000000000000c R14: 000000000000000b R15: 0000000000000000 [ 114.632317][ C0] ? next_uptodate_folio+0x4c8/0x1730 [ 114.637792][ C0] ? next_uptodate_folio+0x126a/0x1730 [ 114.643393][ C0] filemap_map_pages+0xe81/0x2e30 [ 114.648516][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.653822][ C0] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 114.659840][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.665189][ C0] handle_mm_fault+0x6f36/0xe610 [ 114.670266][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.675574][ C0] ? kmsan_get_metadata+0x146/0x1d0 [ 114.681161][ C0] ? __pfx_filemap_map_pages+0x10/0x10 [ 114.686733][ C0] exc_page_fault+0x41b/0x700 [ 114.691535][ C0] asm_exc_page_fault+0x2b/0x30 [ 114.696492][ C0] RIP: 0033:0x7fc22a8cdd20 [ 114.701001][ C0] Code: Unable to access opcode bytes at 0x7fc22a8cdcf6. [ 114.708193][ C0] RSP: 002b:00007ffd152fccc0 EFLAGS: 00010202 [ 114.714661][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 114.722723][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 114.730785][ C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 114.738829][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 114.747002][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 114.755163][ C0] </TASK> [ 114.758494][ C0] Kernel Offset: disabled [ 114.762888][ 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-build2855798142=/tmp/go-build -gno-record-gcc-switches' git status (err=<nil>) HEAD detached at 2aa5052fed 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=2aa5052fed5f8993afacfce02174322df0f03ec4 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240612-135002'" "-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=2aa5052fed5f8993afacfce02174322df0f03ec4 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240612-135002'" "-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=\"2aa5052fed5f8993afacfce02174322df0f03ec4\" Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=12e30256980000 Tested on: commit: a3027fbd Merge branch 'master' into syz-test git tree: git://git.kernel.dk/linux.git syz-test kernel config: https://syzkaller.appspot.com/x/.config?x=3486f1660f47f855 dashboard link: https://syzkaller.appspot.com/bug?extid=e6616d0dc8ded5dc56d6 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.
