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Tue, 12 Mar 2024 07:53:02 -0700 (PDT) Date: Tue, 12 Mar 2024 07:53:02 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000009b889f061377d037@google.com> Subject: Re: [syzbot] [net?] [nfc?] KMSAN: uninit-value in nci_dev_up From: syzbot To: linux-kernel@vger.kernel.org, ryasuoka@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot tried to test the proposed patch but the build/boot failed: ][ T1] usbcore: registered new interface driver es2_ap_driver [ 42.422197][ T1] comedi: version 0.7.76 - http://www.comedi.org [ 42.430658][ T1] usbcore: registered new interface driver dt9812 [ 42.438267][ T1] usbcore: registered new interface driver ni6501 [ 42.446411][ T1] usbcore: registered new interface driver usbdux [ 42.453934][ T1] usbcore: registered new interface driver usbduxfast [ 42.463997][ T1] usbcore: registered new interface driver usbduxsigma [ 42.473612][ T1] usbcore: registered new interface driver vmk80xx [ 42.483836][ T1] usbcore: registered new interface driver prism2_usb [ 42.494704][ T1] usbcore: registered new interface driver r8712u [ 42.503460][ T1] greybus: registered new driver hid [ 42.512311][ T1] greybus: registered new driver gbphy [ 42.519579][ T1] gb_gbphy: registered new driver usb [ 42.527020][ T1] asus_wmi: ASUS WMI generic driver loaded [ 42.731296][ T1] usbcore: registered new interface driver snd-usb-aud= io [ 42.741620][ T1] usbcore: registered new interface driver snd-ua101 [ 42.749952][ T1] usbcore: registered new interface driver snd-usb-usx= 2y [ 42.758661][ T1] usbcore: registered new interface driver snd-usb-us1= 22l [ 42.767118][ T1] usbcore: registered new interface driver snd-usb-cai= aq [ 42.775321][ T1] usbcore: registered new interface driver snd-usb-6fi= re [ 42.783674][ T1] usbcore: registered new interface driver snd-usb-hif= ace [ 42.791997][ T1] usbcore: registered new interface driver snd-bcd2000 [ 42.800157][ T1] usbcore: registered new interface driver snd_usb_pod [ 42.808478][ T1] usbcore: registered new interface driver snd_usb_pod= hd [ 42.816850][ T1] usbcore: registered new interface driver snd_usb_ton= eport [ 42.825534][ T1] usbcore: registered new interface driver snd_usb_var= iax [ 42.833932][ T1] drop_monitor: Initializing network drop monitor serv= ice [ 42.842629][ T1] NET: Registered PF_LLC protocol family [ 42.848636][ T1] GACT probability on [ 42.853209][ T1] Mirror/redirect action on [ 42.858743][ T1] Simple TC action Loaded [ 42.871438][ T1] netem: version 1.3 [ 42.879018][ T1] u32 classifier [ 42.882828][ T1] Performance counters on [ 42.887765][ T1] input device check on [ 42.892411][ T1] Actions configured [ 42.920768][ T1] nf_conntrack_irc: failed to register helpers [ 42.927913][ T1] nf_conntrack_sane: failed to register helpers [ 43.075226][ T1] nf_conntrack_sip: failed to register helpers [ 43.093698][ T1] xt_time: kernel timezone is -0000 [ 43.099798][ T1] IPVS: Registered protocols (TCP, UDP, SCTP, AH, ESP) [ 43.107126][ T1] IPVS: Connection hash table configured (size=3D4096,= memory=3D32Kbytes) [ 43.117858][ T1] IPVS: ipvs loaded. [ 43.122006][ T1] IPVS: [rr] scheduler registered. [ 43.127305][ T1] IPVS: [wrr] scheduler registered. [ 43.132903][ T1] IPVS: [lc] scheduler registered. [ 43.138550][ T1] IPVS: [wlc] scheduler registered. [ 43.144107][ T1] IPVS: [fo] scheduler registered. [ 43.149582][ T1] IPVS: [ovf] scheduler registered. [ 43.155079][ T1] IPVS: [lblc] scheduler registered. [ 43.160612][ T1] IPVS: [lblcr] scheduler registered. [ 43.166196][ T1] IPVS: [dh] scheduler registered. [ 43.171697][ T1] IPVS: [sh] scheduler registered. [ 43.177019][ T1] IPVS: [mh] scheduler registered. [ 43.182292][ T1] IPVS: [sed] scheduler registered. [ 43.188071][ T1] IPVS: [nq] scheduler registered. [ 43.193517][ T1] IPVS: [twos] scheduler registered. [ 43.199089][ T1] IPVS: [sip] pe registered. [ 43.206293][ T1] ipip: IPv4 and MPLS over IPv4 tunneling driver [ 43.220297][ T1] gre: GRE over IPv4 demultiplexor driver [ 43.226392][ T1] ip_gre: GRE over IPv4 tunneling driver [ 43.253883][ T1] IPv4 over IPsec tunneling driver [ 43.270573][ T1] Initializing XFRM netlink socket [ 43.278345][ T1] IPsec XFRM device driver [ 43.284328][ T1] NET: Registered PF_INET6 protocol family [ 43.337639][ T1] Segment Routing with IPv6 [ 43.342341][ T1] RPL Segment Routing with IPv6 [ 43.349039][ T1] In-situ OAM (IOAM) with IPv6 [ 43.355176][ T1] mip6: Mobile IPv6 [ 43.363111][ T1] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D [ 43.363352][ T1] BUG: KMSAN: use-after-free in __list_add_valid_or_re= port+0xeb/0x2c0 [ 43.363499][ T1] __list_add_valid_or_report+0xeb/0x2c0 [ 43.363629][ T1] stack_depot_save_flags+0x554/0x6a0 [ 43.363748][ T1] stack_depot_save+0x12/0x20 [ 43.363852][ T1] ref_tracker_alloc+0x215/0x700 [ 43.363968][ T1] net_rx_queue_update_kobjects+0x1eb/0xa80 [ 43.364082][ T1] netdev_register_kobject+0x30e/0x530 [ 43.364186][ T1] register_netdevice+0x1995/0x2180 [ 43.364280][ T1] register_netdev+0xa5/0xe0 [ 43.364365][ T1] vti6_init_net+0x3f9/0x6a0 [ 43.364486][ T1] ops_init+0x30c/0x880 [ 43.364570][ T1] register_pernet_operations+0x523/0xa00 [ 43.364660][ T1] register_pernet_device+0x4f/0x180 [ 43.364742][ T1] vti6_tunnel_init+0x34/0x450 [ 43.364783][ T1] do_one_initcall+0x219/0x970 [ 43.364964][ T1] do_initcall_level+0x140/0x350 [ 43.364964][ T1] do_initcalls+0xf0/0x1e0 [ 43.364964][ T1] do_basic_setup+0x22/0x30 [ 43.364964][ T1] kernel_init_freeable+0x30b/0x4c0 [ 43.364964][ T1] kernel_init+0x2f/0x7e0 [ 43.364964][ T1] ret_from_fork+0x6d/0x90 [ 43.364964][ T1] ret_from_fork_asm+0x1a/0x30 [ 43.364964][ T1]=20 [ 43.364964][ T1] Uninit was created at: [ 43.364964][ T1] free_unref_page_prepare+0xc1/0xad0 [ 43.364964][ T1] free_unref_page+0x59/0x730 [ 43.364964][ T1] destroy_large_folio+0x12a/0x1d0 [ 43.364964][ T1] __folio_put_large+0x101/0x110 [ 43.364964][ T1] __folio_put+0x153/0x160 [ 43.364964][ T1] free_large_kmalloc+0x167/0x210 [ 43.364964][ T1] kfree+0x4e3/0xa40 [ 43.364964][ T1] kmsan_vmap_pages_range_noflush+0x347/0x3d0 [ 43.364964][ T1] __vmalloc_node_range+0x217c/0x28c0 [ 43.364964][ T1] vmalloc_huge+0x92/0xb0 [ 43.364964][ T1] alloc_large_system_hash+0x459/0xa30 [ 43.364964][ T1] dcache_init+0x125/0x220 [ 43.364964][ T1] vfs_caches_init+0x7c/0xd0 [ 43.364964][ T1] start_kernel+0x8d8/0xa60 [ 43.364964][ T1] x86_64_start_reservations+0x2e/0x30 [ 43.364964][ T1] x86_64_start_kernel+0x98/0xa0 [ 43.364964][ T1] secondary_startup_64_no_verify+0x15f/0x16b [ 43.364964][ T1]=20 [ 43.364964][ T1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.8.0-syzk= aller-01185-g855684c7d938-dirty #0 [ 43.364964][ T1] Hardware name: Google Google Compute Engine/Google C= ompute Engine, BIOS Google 02/29/2024 [ 43.364964][ T1] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D [ 43.364964][ T1] Disabling lock debugging due to kernel taint [ 43.364964][ T1] Kernel panic - not syncing: kmsan.panic set ... [ 43.364964][ T1] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G B = 6.8.0-syzkaller-01185-g855684c7d938-dirty #0 [ 43.364964][ T1] Hardware name: Google Google Compute Engine/Google C= ompute Engine, BIOS Google 02/29/2024 [ 43.364964][ T1] Call Trace: [ 43.364964][ T1] [ 43.364964][ T1] dump_stack_lvl+0x1bf/0x240 [ 43.364964][ T1] dump_stack+0x1e/0x30 [ 43.364964][ T1] panic+0x4e2/0xcc0 [ 43.364964][ T1] ? kmsan_get_metadata+0x121/0x1c0 [ 43.364964][ T1] kmsan_report+0x2d5/0x2e0 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] ? __msan_warning+0x95/0x110 [ 43.364964][ T1] ? __list_add_valid_or_report+0xeb/0x2c0 [ 43.364964][ T1] ? stack_depot_save_flags+0x554/0x6a0 [ 43.364964][ T1] ? stack_depot_save+0x12/0x20 [ 43.364964][ T1] ? ref_tracker_alloc+0x215/0x700 [ 43.364964][ T1] ? net_rx_queue_update_kobjects+0x1eb/0xa80 [ 43.364964][ T1] ? netdev_register_kobject+0x30e/0x530 [ 43.364964][ T1] ? register_netdevice+0x1995/0x2180 [ 43.364964][ T1] ? register_netdev+0xa5/0xe0 [ 43.364964][ T1] ? vti6_init_net+0x3f9/0x6a0 [ 43.364964][ T1] ? ops_init+0x30c/0x880 [ 43.364964][ T1] ? register_pernet_operations+0x523/0xa00 [ 43.364964][ T1] ? register_pernet_device+0x4f/0x180 [ 43.364964][ T1] ? vti6_tunnel_init+0x34/0x450 [ 43.364964][ T1] ? do_one_initcall+0x219/0x970 [ 43.364964][ T1] ? do_initcall_level+0x140/0x350 [ 43.364964][ T1] ? do_initcalls+0xf0/0x1e0 [ 43.364964][ T1] ? do_basic_setup+0x22/0x30 [ 43.364964][ T1] ? kernel_init_freeable+0x30b/0x4c0 [ 43.364964][ T1] ? kernel_init+0x2f/0x7e0 [ 43.364964][ T1] ? ret_from_fork+0x6d/0x90 [ 43.364964][ T1] ? ret_from_fork_asm+0x1a/0x30 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 43.364964][ T1] ? _raw_spin_lock_irqsave+0x35/0xc0 [ 43.364964][ T1] ? filter_irq_stacks+0x60/0x1a0 [ 43.364964][ T1] ? stack_depot_save_flags+0x2c/0x6a0 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 43.364964][ T1] __msan_warning+0x95/0x110 [ 43.364964][ T1] __list_add_valid_or_report+0xeb/0x2c0 [ 43.364964][ T1] stack_depot_save_flags+0x554/0x6a0 [ 43.364964][ T1] stack_depot_save+0x12/0x20 [ 43.364964][ T1] ref_tracker_alloc+0x215/0x700 [ 43.364964][ T1] ? dev_uevent_filter+0x53/0x110 [ 43.364964][ T1] ? net_rx_queue_update_kobjects+0x1eb/0xa80 [ 43.364964][ T1] ? netdev_register_kobject+0x30e/0x530 [ 43.364964][ T1] ? register_netdevice+0x1995/0x2180 [ 43.364964][ T1] ? register_netdev+0xa5/0xe0 [ 43.364964][ T1] ? vti6_init_net+0x3f9/0x6a0 [ 43.364964][ T1] ? ops_init+0x30c/0x880 [ 43.364964][ T1] ? register_pernet_operations+0x523/0xa00 [ 43.364964][ T1] ? register_pernet_device+0x4f/0x180 [ 43.364964][ T1] ? vti6_tunnel_init+0x34/0x450 [ 43.364964][ T1] ? do_one_initcall+0x219/0x970 [ 43.364964][ T1] ? do_initcall_level+0x140/0x350 [ 43.364964][ T1] ? do_initcalls+0xf0/0x1e0 [ 43.364964][ T1] ? do_basic_setup+0x22/0x30 [ 43.364964][ T1] ? kernel_init_freeable+0x30b/0x4c0 [ 43.364964][ T1] ? kernel_init+0x2f/0x7e0 [ 43.364964][ T1] ? ret_from_fork+0x6d/0x90 [ 43.364964][ T1] net_rx_queue_update_kobjects+0x1eb/0xa80 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] netdev_register_kobject+0x30e/0x530 [ 43.364964][ T1] register_netdevice+0x1995/0x2180 [ 43.364964][ T1] register_netdev+0xa5/0xe0 [ 43.364964][ T1] vti6_init_net+0x3f9/0x6a0 [ 43.364964][ T1] ? __pfx_vti6_init_net+0x10/0x10 [ 43.364964][ T1] ops_init+0x30c/0x880 [ 43.364964][ T1] register_pernet_operations+0x523/0xa00 [ 43.364964][ T1] register_pernet_device+0x4f/0x180 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] vti6_tunnel_init+0x34/0x450 [ 43.364964][ T1] ? __pfx_vti6_tunnel_init+0x10/0x10 [ 43.364964][ T1] do_one_initcall+0x219/0x970 [ 43.364964][ T1] ? __pfx_vti6_tunnel_init+0x10/0x10 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 43.364964][ T1] ? parse_args+0x266/0x1600 [ 43.364964][ T1] ? filter_irq_stacks+0x60/0x1a0 [ 43.364964][ T1] ? stack_depot_save_flags+0x2c/0x6a0 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 43.364964][ T1] ? parse_args+0x152c/0x1600 [ 43.364964][ T1] ? kmsan_get_metadata+0x146/0x1c0 [ 43.364964][ T1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 43.364964][ T1] ? __pfx_vti6_tunnel_init+0x10/0x10 [ 43.375029][ T1] do_initcall_level+0x140/0x350 [ 43.375029][ T1] do_initcalls+0xf0/0x1e0 [ 43.375216][ T1] ? __pfx_native_smp_prepare_cpus+0x10/0x10 [ 43.375216][ T1] do_basic_setup+0x22/0x30 [ 43.375216][ T1] kernel_init_freeable+0x30b/0x4c0 [ 43.375216][ T1] ? __pfx_kernel_init+0x10/0x10 [ 43.375216][ T1] kernel_init+0x2f/0x7e0 [ 43.375216][ T1] ? __pfx_kernel_init+0x10/0x10 [ 43.375216][ T1] ret_from_fork+0x6d/0x90 [ 43.375216][ T1] ? __pfx_kernel_init+0x10/0x10 [ 43.375216][ T1] ret_from_fork_asm+0x1a/0x30 [ 43.375216][ T1] [ 43.375216][ T1] Kernel Offset: disabled syzkaller build log: go env (err=3D) GO111MODULE=3D'auto' GOARCH=3D'amd64' GOBIN=3D'' GOCACHE=3D'/syzkaller/.cache/go-build' GOENV=3D'/syzkaller/.config/go/env' GOEXE=3D'' GOEXPERIMENT=3D'' GOFLAGS=3D'' GOHOSTARCH=3D'amd64' GOHOSTOS=3D'linux' GOINSECURE=3D'' GOMODCACHE=3D'/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY=3D'' GONOSUMDB=3D'' GOOS=3D'linux' GOPATH=3D'/syzkaller/jobs-2/linux/gopath' GOPRIVATE=3D'' GOPROXY=3D'https://proxy.golang.org,direct' GOROOT=3D'/usr/local/go' GOSUMDB=3D'sum.golang.org' GOTMPDIR=3D'' GOTOOLCHAIN=3D'auto' GOTOOLDIR=3D'/usr/local/go/pkg/tool/linux_amd64' GOVCS=3D'' GOVERSION=3D'go1.21.4' GCCGO=3D'gccgo' GOAMD64=3D'v1' AR=3D'ar' CC=3D'gcc' CXX=3D'g++' CGO_ENABLED=3D'1' GOMOD=3D'/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.= mod' GOWORK=3D'' CGO_CFLAGS=3D'-O2 -g' CGO_CPPFLAGS=3D'' CGO_CXXFLAGS=3D'-O2 -g' CGO_FFLAGS=3D'-O2 -g' CGO_LDFLAGS=3D'-O2 -g' PKG_CONFIG=3D'pkg-config' GOGCCFLAGS=3D'-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=3D0= -ffile-prefix-map=3D/tmp/go-build870398676=3D/tmp/go-build -gno-record-gcc= -switches' git status (err=3D) HEAD detached at 1e153dc8b 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/contribut= ing.md#using-syz-env go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sy= s/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=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X github.com/google= /syzkaller/prog.GitRevision=3D1e153dc8b31e685ca8495576db4f8c077585e39c -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20240123-140118'" "-tags= =3Dsyz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer= github.com/google/syzkaller/syz-fuzzer GOOS=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X github.com/google= /syzkaller/prog.GitRevision=3D1e153dc8b31e685ca8495576db4f8c077585e39c -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20240123-140118'" "-tags= =3Dsyz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execpr= og github.com/google/syzkaller/tools/syz-execprog GOOS=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X github.com/google= /syzkaller/prog.GitRevision=3D1e153dc8b31e685ca8495576db4f8c077585e39c -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20240123-140118'" "-tags= =3Dsyz_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 -Wfr= ame-larger-than=3D16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-forma= t-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -= static-pie -fpermissive -w -DGOOS_linux=3D1 -DGOARCH_amd64=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"1e153dc8b31e685ca8495576db4f8c0775= 85e39c\" Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=3D12af9786180000 Tested on: commit: 855684c7 Merge tag 'x86_tdx_for_6.9' of git://git.kern.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=3D6b3a9c97e8057f2= 5 dashboard link: https://syzkaller.appspot.com/bug?extid=3D7ea9413ea6749baf5= 574 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debia= n) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D12ba6c691800= 00