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Tue, 10 Nov 2026 11:32:02 -0800 (PST) Date: Tue, 10 Nov 2026 11:32:02 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6af37132.6ea51c61.3838e6.0014.GAE@google.com> Subject: Re: [syzbot] [block?] general protection fault in blk_mq_quiesce_queue From: syzbot To: linux-kernel@vger.kernel.org, nenkov2004@gmail.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: SYZFAIL: failed to recv rpc SYZFAIL: failed to recv rpc fd=3D3 want=3D4 recv=3D0 n=3D0 (errno 9: Bad file descriptor) execution of simple program fails: NOTFAIL: arptable checkpoint: getsockopt= (ARPT_SO_GET_ENTRIES) failed. table=3Dfilter (errno 22: Invalid argument). qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than= the requested size (0x301000) [ 41.844215][ T1129] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 41.844240][ T1129] qemu-system-x86_64: ahci: PRDT length for NCQ comman= d (0x0) is smaller than the requested size (0x400000) ata1: failed to read log page 10h (errno=3D-5) [ 41.844257][ T1129] ata1.00: exception Emask 0x1 SAct 0x40000001 SErr 0x= 0 action 0x0 [ 41.844276][ T1129] ata1.00: irq_stat 0x40000000 [ 41.844292][ T1129] ata1.00: failed command: WRITE FPDMA QUEUED [ 41.844304][ T1129] ata1.00: cmd 61/10:00:3e:99:04/0f:00:00:00:00/40 tag= 0 ncq dma 1974272 ou [ 41.844304][ T1129] res 50/00:00:00:00:00/00:00:00:00:00/00 Ema= sk 0x1 (device error) [ 41.844356][ T1129] ata1.00: status: { DRDY } [ 41.844375][ T1129] ata1.00: failed command: WRITE FPDMA QUEUED [ 41.844385][ T1129] ata1.00: cmd 61/08:f0:36:81:04/18:00:00:00:00/40 tag= 30 ncq dma 3149824 ou [ 41.844385][ T1129] res 50/00:00:00:00:00/00:00:00:00:00/00 Ema= sk 0x1 (device error) [ 41.844439][ T1129] ata1.00: status: { DRDY } [ 41.845428][ T1129] ata1.00: configured for UDMA/100 [ 41.846224][ T1129] ata1: EH complete [ 71.003538][ T856] cfg80211: failed to load regulatory.db [ 72.321505][ T1129] ata1.00: exception Emask 0x0 SAct 0x40000000 SErr 0x= 0 action 0x6 frozen [ 72.321540][ T1129] ata1.00: failed command: WRITE FPDMA QUEUED [ 72.321551][ T1129] ata1.00: cmd 61/00:f0:36:21:05/20:00:00:00:00/40 tag= 30 ncq dma 4194304 ou [ 72.321551][ T1129] res 40/00:00:00:00:00/00:00:00:00:00/00 Ema= sk 0x4 (timeout) [ 72.321601][ T1129] ata1.00: status: { DRDY } [ 72.321649][ T1129] ata1: hard resetting link [ 72.646494][ T1129] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 30= 0) [ 72.647439][ T1129] ata1.00: configured for UDMA/100 [ 72.647691][ T1129] ata1: EH complete Warning: Permanently added '[localhost]:31181' (ED25519) to the list of kno= wn hosts. 2026/11/10 19:31:24 parsed 1 programs 2026/11/10 19:31:24 serving rpc on tcp://46365 [ 79.004885][ T5750] cgroup: Unknown subsys name 'net' [ 79.134080][ T5750] cgroup: Unknown subsys name 'cpuset' [ 79.139134][ T5750] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size =3D 127995904 bytes [ 80.470828][ T5750] Adding 124996k swap on ./swap-file. Priority:0 exte= nts:1 across:124996k=20 [ 82.853082][ T5760] soft_limit_in_bytes is deprecated and will be remove= d. Writing any value to this file has no effect. Please report your usecase= to linux-mm@kvack.org if you depend on this functionality. [ 82.870654][ T5760] ebtables: xtables 32bit compat interface no longer s= upported in namespaces and will be removed soon. [ 82.879298][ T5760] arp_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 83.020826][ T5773] br_netfilter no longer supported in user namespaces [ 83.154564][ T5773] ip_tables: xtables 32bit compat interface no longer = supported in namespaces and will be removed soon. [ 83.154852][ T5773] ip6_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 83.780501][ T68] wlan0: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 83.780523][ T68] wlan0: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 83.875702][ T68] wlan1: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 83.875718][ T68] wlan1: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 84.091124][ T5832] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > = 1 [ 84.092413][ T5832] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > = 9 [ 84.092833][ T5832] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > = 9 [ 84.093874][ T5832] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > = 4 [ 84.094321][ T5832] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > = 2 [ 84.121156][ T5780] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 84.122077][ T5780] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 84.122180][ T5780] bridge_slave_0: entered allmulticast mode [ 84.123151][ T5780] bridge_slave_0: entered promiscuous mode [ 84.141075][ T5780] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 84.141171][ T5780] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 84.141612][ T5780] bridge_slave_1: entered allmulticast mode [ 84.142798][ T5780] bridge_slave_1: entered promiscuous mode [ 84.215418][ T5780] bond0: (slave bond_slave_0): Enslaving as an active = interface with an up link [ 84.221957][ T5780] bond0: (slave bond_slave_1): Enslaving as an active = interface with an up link [ 84.248965][ T5780] team0: Port device team_slave_0 added [ 84.254455][ T5780] team0: Port device team_slave_1 added [ 84.280176][ T5780] batman_adv: batadv0: Adding interface: batadv_slave_= 0 [ 84.280193][ T5780] batman_adv: batadv0: The MTU of interface batadv_sla= ve_0 is too small (1500) to handle the transport of batman-adv packets. Pac= kets going over this interface will be fragmented on layer2 which could imp= act the performance. Setting the MTU to 1532 would solve the problem. [ 84.280214][ T5780] batman_adv: batadv0: Not using interface batadv_slav= e_0 (retrying later): interface not active [ 84.284994][ T5780] batman_adv: batadv0: Adding interface: batadv_slave_= 1 [ 84.285014][ T5780] batman_adv: batadv0: The MTU of interface batadv_sla= ve_1 is too small (1500) to handle the transport of batman-adv packets. Pac= kets going over this interface will be fragmented on layer2 which could imp= act the performance. Setting the MTU to 1532 would solve the problem. [ 84.285035][ T5780] batman_adv: batadv0: Not using interface batadv_slav= e_1 (retrying later): interface not active [ 84.423649][ T5780] hsr_slave_0: entered promiscuous mode [ 84.426706][ T5780] hsr_slave_1: entered promiscuous mode [ 84.684141][ T5780] netdevsim netdevsim6 netdevsim0: renamed from eth0 [ 84.689820][ T5780] 8021q: adding VLAN 0 to HW filter on device netdevsi= m0 [ 84.690609][ T5780] netdevsim netdevsim6 netdevsim1: renamed from eth1 [ 84.694534][ T5780] 8021q: adding VLAN 0 to HW filter on device netdevsi= m1 [ 84.695342][ T5780] netdevsim netdevsim6 netdevsim2: renamed from eth2 [ 84.699510][ T5780] 8021q: adding VLAN 0 to HW filter on device netdevsi= m2 [ 84.700415][ T5780] netdevsim netdevsim6 netdevsim3: renamed from eth3 [ 84.702833][ T5780] 8021q: adding VLAN 0 to HW filter on device netdevsi= m3 [ 84.826990][ T5780] 8021q: adding VLAN 0 to HW filter on device bond0 [ 84.846339][ T5780] 8021q: adding VLAN 0 to HW filter on device team0 [ 84.852806][ T38] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 84.853180][ T38] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 84.862643][ T38] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 84.862698][ T38] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 85.186557][ T5780] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 85.383527][ T5780] veth0_vlan: entered promiscuous mode [ 85.390385][ T5780] veth1_vlan: entered promiscuous mode [ 85.415572][ T5780] veth0_macvtap: entered promiscuous mode [ 85.419971][ T5780] veth1_macvtap: entered promiscuous mode [ 85.430797][ T5780] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 85.437743][ T5780] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 85.491628][ T14] netdevsim netdevsim6 netdevsim0: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 85.521992][ T14] netdevsim netdevsim6 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 85.522034][ T14] netdevsim netdevsim6 netdevsim2: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 85.522064][ T14] netdevsim netdevsim6 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 85.558282][ T5812] netdevsim netdevsim6 netdevsim3 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 SYZFAIL: failed to recv rpc fd=3D3 want=3D4 recv=3D0 n=3D0 (errno 9: Bad file descriptor) execution of simple program fails: NOTFAIL: arptable checkpoint: getsockopt= (ARPT_SO_GET_ENTRIES) failed. table=3Dfilter (errno 22: Invalid argument). [ 85.635294][ T5812] netdevsim netdevsim6 netdevsim2 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 85.696264][ T5812] netdevsim netdevsim6 netdevsim1 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 85.841148][ T5812] netdevsim netdevsim6 netdevsim0 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 87.595495][ T5812] bridge_slave_1: left allmulticast mode [ 87.595530][ T5812] bridge_slave_1: left promiscuous mode [ 87.596427][ T5812] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 87.599943][ T5812] bridge_slave_0: left allmulticast mode [ 87.599965][ T5812] bridge_slave_0: left promiscuous mode [ 87.600143][ T5812] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 87.708233][ T5812] bond0 (unregistering): (slave bond_slave_0): Releasi= ng backup interface [ 87.710902][ T5812] bond0 (unregistering): (slave bond_slave_1): Releasi= ng backup interface [ 87.714475][ T5812] bond0 (unregistering): Released all slaves [ 87.787731][ T5812] hsr_slave_0: left promiscuous mode [ 87.788517][ T5812] hsr_slave_1: left promiscuous mode [ 87.789254][ T5812] batman_adv: batadv0: Interface deactivated: batadv_s= lave_0 [ 87.789275][ T5812] batman_adv: batadv0: Removing interface: batadv_slav= e_0 [ 87.790212][ T5812] batman_adv: batadv0: Interface deactivated: batadv_s= lave_1 [ 87.790222][ T5812] batman_adv: batadv0: Removing interface: batadv_slav= e_1 [ 87.798747][ T5812] veth1_macvtap: left promiscuous mode [ 87.798783][ T5812] veth0_macvtap: left promiscuous mode [ 87.798830][ T5812] veth1_vlan: left promiscuous mode [ 87.798867][ T5812] veth0_vlan: left promiscuous mode [ 87.974363][ T5812] team0 (unregistering): Port device team_slave_1 remo= ved [ 87.979464][ T5812] team0 (unregistering): Port device team_slave_0 remo= ved [ 88.038058][ T5445] 8021q: adding VLAN 0 to HW filter on device eth2 [ 88.225642][ T5445] 8021q: adding VLAN 0 to HW filter on device eth3 [ 88.407846][ T5445] 8021q: adding VLAN 0 to HW filter on device eth5 [ 88.609210][ T5445] 8021q: adding VLAN 0 to HW filter on device eth4 syzkaller build log: go env (err=3D) AR=3D'ar' CC=3D'gcc' CGO_CFLAGS=3D'-O2 -g' CGO_CPPFLAGS=3D'' CGO_CXXFLAGS=3D'-O2 -g' CGO_ENABLED=3D'1' CGO_FFLAGS=3D'-O2 -g' CGO_LDFLAGS=3D'-O2 -g' CXX=3D'g++' GCCGO=3D'gccgo' GO111MODULE=3D'auto' GOAMD64=3D'v1' GOARCH=3D'amd64' GOAUTH=3D'netrc' GOBIN=3D'' GOCACHE=3D'/syzkaller/.cache/go-build' GOCACHEPROG=3D'' GODEBUG=3D'' GOENV=3D'/syzkaller/.config/go/env' GOEXE=3D'' GOEXPERIMENT=3D'' GOFIPS140=3D'off' GOFLAGS=3D'' GOGCCFLAGS=3D'-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=3D0= -ffile-prefix-map=3D/tmp/go-build1302820052=3D/tmp/go-build -gno-record-gc= c-switches' GOHOSTARCH=3D'amd64' GOHOSTOS=3D'linux' GOINSECURE=3D'' GOMOD=3D'/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mo= d' GOMODCACHE=3D'/syzkaller/jobs/linux/gopath/pkg/mod' GONOPROXY=3D'' GONOSUMDB=3D'' GOOS=3D'linux' GOPATH=3D'/syzkaller/jobs/linux/gopath' GOPRIVATE=3D'' GOPROXY=3D'https://proxy.golang.org,direct' GOROOT=3D'/usr/local/go' GOSUMDB=3D'sum.golang.org' GOTELEMETRY=3D'local' GOTELEMETRYDIR=3D'/syzkaller/.config/go/telemetry' GOTMPDIR=3D'' GOTOOLCHAIN=3D'auto' GOTOOLDIR=3D'/usr/local/go/pkg/tool/linux_amd64' GOVCS=3D'' GOVERSION=3D'go1.26.0' GOWORK=3D'' PKG_CONFIG=3D'pkg-config' git status (err=3D) HEAD detached at d2e5fb956a 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/contribut= ing.md#using-syz-env go list -f '{{.Stale}}' -ldflags=3D"-s -w -X github.com/google/syzkaller/pr= og.GitRevision=3Dd2e5fb956ad222b37a913979e04dc012f4868836 -X github.com/goo= gle/syzkaller/prog.gitRevisionDate=3D20260903-102143" ./sys/syz-sysgen | g= rep -q false || go install -ldflags=3D"-s -w -X github.com/google/syzkaller= /prog.GitRevision=3Dd2e5fb956ad222b37a913979e04dc012f4868836 -X github.com/= google/syzkaller/prog.gitRevisionDate=3D20260903-102143" ./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/contribut= ing.md#using-syz-env bin/syz-sysgen touch .descriptions GOOS=3Dlinux GOARCH=3Damd64 go build -ldflags=3D"-s -w -X github.com/google= /syzkaller/prog.GitRevision=3Dd2e5fb956ad222b37a913979e04dc012f4868836 -X g= ithub.com/google/syzkaller/prog.gitRevisionDate=3D20260903-102143" -o ./bi= n/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog mkdir -p ./bin/linux_386 x86_64-linux-gnu-g++ -o ./bin/linux_386/syz-executor executor/executor.cc \ -m32 -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 -std=3Dc++17 -I. -Iexecutor/_include -DGOOS_linux=3D1 -DGOARCH= _386=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"d2e5fb956ad222b37a913979e04dc012f4= 868836\" /usr/bin/ld: /tmp/ccGyTJVs.o: in function `Connection::Connect(char const*,= char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEP= KcS1_]+0x145): warning: Using 'gethostbyname' in statically linked applicat= ions requires at runtime the shared libraries from the glibc version used f= or linking ./tools/check-syzos.sh 2>/dev/null [INFO] Unsupported architecture '386', skipping check. Tested on: commit: 067c5c24 Merge tag 'page_alloc-for-7.4-rc2' of git://g.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=3Dc40cb9cd7a4b919= a dashboard link: https://syzkaller.appspot.com/bug?extid=3Dfefa0af09f7891b18= 00e compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Deb= ian) 2.44 userspace arch: i386 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D15e433695800= 00