Re: [syzbot] [gfs2?] WARNING in rgblk_free (2)
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syzbot
Apr 17, 2026, 6:28:05 AM (4 days ago) Apr 17
to linux-...@vger.kernel.org, syzkall...@googlegroups.com, tri...@gmail.com
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
lost connection to test machine
syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0xc0000)
qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000)
[ 89.858685][ T1014] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1
[ 89.861727][ T1014] ata1: failed to read log page 10h (errno=-5)
[ 89.864528][ T1014] ata1.00: exception Emask 0x1 SAct 0x40001800 SErr 0x0 action 0x0
[ 89.882551][ T1014] ata1.00: irq_stat 0x41000000
[ 89.890503][ T1014] ata1.00: failed command: WRITE FPDMA QUEUED
[ 89.893877][ T1014] ata1.00: cmd 61/00:58:36:a1:04/20:00:00:00:00/40 tag 11 ncq dma 4194304 ou
[ 89.893877][ T1014] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[ 89.915460][ T1014] ata1.00: status: { DRDY }
[ 89.920297][ T1014] ata1.00: error: { ABRT }
[ 89.923386][ T1014] ata1.00: failed command: WRITE FPDMA QUEUED
[ 89.931869][ T1014] ata1.00: cmd 61/00:60:36:c1:04/20:00:00:00:00/40 tag 12 ncq dma 4194304 ou
[ 89.931869][ T1014] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[ 89.950869][ T1014] ata1.00: status: { DRDY }
[ 89.956448][ T1014] ata1.00: error: { ABRT }
[ 89.958509][ T1014] ata1.00: failed command: WRITE FPDMA QUEUED
[ 89.961206][ T1014] ata1.00: cmd 61/00:f0:6e:4d:04/06:00:00:00:00/40 tag 30 ncq dma 786432 out
[ 89.961206][ T1014] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[ 89.982304][ T1014] ata1.00: status: { DRDY }
[ 89.991443][ T1014] ata1.00: error: { ABRT }
[ 90.000906][ T1014] ata1.00: configured for UDMA/100
[ 90.010275][ T1014] ata1: EH complete
qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000)
Warning: Permanently added '[localhost]:64818' (ED25519) to the list of known hosts.
2026/04/17 10:25:55 parsed 1 programs
[ 96.907509][ T9] cfg80211: failed to load regulatory.db
[ 98.569240][ T5315] cgroup: Unknown subsys name 'net'
[ 98.640395][ T5315] cgroup: Unknown subsys name 'cpuset'
[ 98.647229][ T5315] cgroup: Unknown subsys name 'rlimit'
[ 142.980103][ T1317] ieee802154 phy0 wpan0: encryption failed: -22
[ 142.983476][ T1317] ieee802154 phy1 wpan1: encryption failed: -22
[ 157.075680][ T1014] ata1.00: exception Emask 0x0 SAct 0x800 SErr 0x0 action 0x6 frozen
[ 157.079696][ T1014] ata1.00: failed command: WRITE FPDMA QUEUED
[ 157.082402][ T1014] ata1.00: cmd 61/00:58:36:61:05/20:00:00:00:00/40 tag 11 ncq dma 4194304 ou
[ 157.082402][ T1014] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[ 157.090593][ T1014] ata1.00: status: { DRDY }
[ 157.092972][ T1014] ata1: hard resetting link
[ 157.416392][ T1014] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 157.420997][ T1014] ata1.00: configured for UDMA/100
[ 157.424015][ T1014] ata1: EH complete
qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000)
[ 157.446324][ T1014] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1
[ 157.449310][ T1014] ata1: failed to read log page 10h (errno=-5)
[ 157.451924][ T1014] ata1.00: NCQ disabled due to excessive errors
[ 157.454677][ T1014] ata1.00: exception Emask 0x1 SAct 0x200000 SErr 0x0 action 0x0
[ 157.470790][ T1014] ata1.00: irq_stat 0x41000000
[ 157.480554][ T1014] ata1.00: failed command: WRITE FPDMA QUEUED
[ 157.483383][ T1014] ata1.00: cmd 61/00:a8:36:61:05/20:00:00:00:00/40 tag 21 ncq dma 4194304 ou
[ 157.483383][ T1014] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[ 157.491197][ T1014] ata1.00: status: { DRDY }
[ 157.493200][ T1014] ata1.00: error: { ABRT }
[ 157.496680][ T1014] ata1.00: configured for UDMA/100
[ 157.499460][ T1014] ata1: EH complete
qemu-system-x86_64: hw/ide/core.c:934: ide_dma_cb: Assertion `prep_size >= 0 && prep_size <= n * 512' failed.
Connection to localhost closed by remote host.
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-build3275867337=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOMODCACHE='/syzkaller/jobs/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs/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 d1b870e1003b
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=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" ./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=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" -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=\"d1b870e1003b52891d2196c1e2ee42fe905010ba\"
/usr/bin/ld: /tmp/ccpJgQJT.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
Tested on:
commit: 43cfbdda Merge tag 'for-linus-iommufd' of git://git.ke..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
kernel config: https://syzkaller.appspot.com/x/.config?x=54b300c91b61ad10
dashboard link: https://syzkaller.appspot.com/bug?extid=3e2c95229d1ab81a0bfd
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=11f70fca580000
syzbot tried to test the proposed patch but the build/boot failed:
lost connection to test machine
syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0xc0000)
qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000)
[ 89.858685][ T1014] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1
[ 89.861727][ T1014] ata1: failed to read log page 10h (errno=-5)
[ 89.864528][ T1014] ata1.00: exception Emask 0x1 SAct 0x40001800 SErr 0x0 action 0x0
[ 89.882551][ T1014] ata1.00: irq_stat 0x41000000
[ 89.890503][ T1014] ata1.00: failed command: WRITE FPDMA QUEUED
[ 89.893877][ T1014] ata1.00: cmd 61/00:58:36:a1:04/20:00:00:00:00/40 tag 11 ncq dma 4194304 ou
[ 89.893877][ T1014] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[ 89.915460][ T1014] ata1.00: status: { DRDY }
[ 89.920297][ T1014] ata1.00: error: { ABRT }
[ 89.923386][ T1014] ata1.00: failed command: WRITE FPDMA QUEUED
[ 89.931869][ T1014] ata1.00: cmd 61/00:60:36:c1:04/20:00:00:00:00/40 tag 12 ncq dma 4194304 ou
[ 89.931869][ T1014] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[ 89.950869][ T1014] ata1.00: status: { DRDY }
[ 89.956448][ T1014] ata1.00: error: { ABRT }
[ 89.958509][ T1014] ata1.00: failed command: WRITE FPDMA QUEUED
[ 89.961206][ T1014] ata1.00: cmd 61/00:f0:6e:4d:04/06:00:00:00:00/40 tag 30 ncq dma 786432 out
[ 89.961206][ T1014] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[ 89.982304][ T1014] ata1.00: status: { DRDY }
[ 89.991443][ T1014] ata1.00: error: { ABRT }
[ 90.000906][ T1014] ata1.00: configured for UDMA/100
[ 90.010275][ T1014] ata1: EH complete
qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000)
Warning: Permanently added '[localhost]:64818' (ED25519) to the list of known hosts.
2026/04/17 10:25:55 parsed 1 programs
[ 96.907509][ T9] cfg80211: failed to load regulatory.db
[ 98.569240][ T5315] cgroup: Unknown subsys name 'net'
[ 98.640395][ T5315] cgroup: Unknown subsys name 'cpuset'
[ 98.647229][ T5315] cgroup: Unknown subsys name 'rlimit'
[ 142.980103][ T1317] ieee802154 phy0 wpan0: encryption failed: -22
[ 142.983476][ T1317] ieee802154 phy1 wpan1: encryption failed: -22
[ 157.075680][ T1014] ata1.00: exception Emask 0x0 SAct 0x800 SErr 0x0 action 0x6 frozen
[ 157.079696][ T1014] ata1.00: failed command: WRITE FPDMA QUEUED
[ 157.082402][ T1014] ata1.00: cmd 61/00:58:36:61:05/20:00:00:00:00/40 tag 11 ncq dma 4194304 ou
[ 157.082402][ T1014] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[ 157.090593][ T1014] ata1.00: status: { DRDY }
[ 157.092972][ T1014] ata1: hard resetting link
[ 157.416392][ T1014] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 157.420997][ T1014] ata1.00: configured for UDMA/100
[ 157.424015][ T1014] ata1: EH complete
qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000)
[ 157.446324][ T1014] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1
[ 157.449310][ T1014] ata1: failed to read log page 10h (errno=-5)
[ 157.451924][ T1014] ata1.00: NCQ disabled due to excessive errors
[ 157.454677][ T1014] ata1.00: exception Emask 0x1 SAct 0x200000 SErr 0x0 action 0x0
[ 157.470790][ T1014] ata1.00: irq_stat 0x41000000
[ 157.480554][ T1014] ata1.00: failed command: WRITE FPDMA QUEUED
[ 157.483383][ T1014] ata1.00: cmd 61/00:a8:36:61:05/20:00:00:00:00/40 tag 21 ncq dma 4194304 ou
[ 157.483383][ T1014] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[ 157.491197][ T1014] ata1.00: status: { DRDY }
[ 157.493200][ T1014] ata1.00: error: { ABRT }
[ 157.496680][ T1014] ata1.00: configured for UDMA/100
[ 157.499460][ T1014] ata1: EH complete
qemu-system-x86_64: hw/ide/core.c:934: ide_dma_cb: Assertion `prep_size >= 0 && prep_size <= n * 512' failed.
Connection to localhost closed by remote host.
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-build3275867337=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOMODCACHE='/syzkaller/jobs/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs/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 d1b870e1003b
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=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" ./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=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" -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=\"d1b870e1003b52891d2196c1e2ee42fe905010ba\"
/usr/bin/ld: /tmp/ccpJgQJT.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
Tested on:
commit: 43cfbdda Merge tag 'for-linus-iommufd' of git://git.ke..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
kernel config: https://syzkaller.appspot.com/x/.config?x=54b300c91b61ad10
dashboard link: https://syzkaller.appspot.com/bug?extid=3e2c95229d1ab81a0bfd
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=11f70fca580000
syzbot
Apr 17, 2026, 12:38:03 PM (3 days ago) Apr 17
to linux-...@vger.kernel.org, syzkall...@googlegroups.com, tri...@gmail.com
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
failed to copy syz-execprog to VM: scp failed: failed to run ["scp" "-P" "64862" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@localhost:/syz-execprog"]: exit status 1
syzbot tried to test the proposed patch but the build/boot failed:
Executing: program /usr/bin/ssh host localhost, user root, command sftp
debug1: OpenSSH_10.0p2 Debian-7, OpenSSL 3.5.4 30 Sep 2025
debug1: Reading configuration data /dev/null
debug1: Connecting to localhost [::1] port 64862.
debug1: connect to address ::1 port 64862: Connection refused
debug1: Connecting to localhost [127.0.0.1] port 64862.
debug1: fd 3 clearing O_NONBLOCK
debug1: Connection established.
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa_sk type -1
debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: identity file /root/.ssh/id_ed25519_sk type -1
debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /root/.ssh/id_xmss type -1
debug1: identity file /root/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_10.0p2 Debian-7
debug1: Remote protocol version 2.0, remote software version OpenSSH_9.9
debug1: compat_banner: match: OpenSSH_9.9 pat OpenSSH* compat 0x04000000
debug1: Authenticating to localhost:64862 as 'root'
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: mlkem768x25519-sha256
debug1: kex: host key algorithm: ssh-ed25519
debug1: kex: server->client cipher: chacha20...@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20...@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: SSH2_MSG_KEX_ECDH_REPLY received
debug1: Server host key: ssh-ed25519 SHA256:EAvWV3GG8odMD+k20F251zjwXNDbyLo/P7N2oY0DvFQ
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
debug1: checking without port identifier
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
Warning: Permanently added '[localhost]:64862' (ED25519) to the list of known hosts.
debug1: ssh_packet_send2_wrapped: resetting send seqnr 3
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: Sending SSH2_MSG_EXT_INFO
debug1: expecting SSH2_MSG_NEWKEYS
debug1: ssh_packet_read_poll2: resetting read seqnr 3
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey in after 134217728 blocks
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_ext_info_client_parse: server-sig-algs=<ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ssh-...@openssh.com,sk-ecdsa-sh...@openssh.com,rsa-sha2-512,rsa-sha2-256>
debug1: kex_ext_info_check_ver: publickey...@openssh.com=<0>
debug1: kex_ext_info_check_ver: pi...@openssh.com=<0>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_ext_info_client_parse: server-sig-algs=<ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ssh-...@openssh.com,sk-ecdsa-sh...@openssh.com,rsa-sha2-512,rsa-sha2-256>
Authenticated to localhost ([127.0.0.1]:64862) using "none".
debug1: channel 0: new session [client-session] (inactive timeout: 0)
debug1: Requesting no-more-...@openssh.com
debug1: Entering interactive session.
debug1: pledge: network
debug1: client_input_global_request: rtype hostk...@openssh.com want_reply 0
debug1: Sending subsystem: sftp
debug1: pledge: fork
Read from remote host localhost: Connection reset by peer
client_loop: send disconnect: Broken pipe
lost connection
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
Tested on:
commit: d730905b Merge tag 'mips_7.1' of git://git.kernel.org/..
./tools/check-syzos.sh 2>/dev/null
Tested on:
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
kernel config: https://syzkaller.appspot.com/x/.config?x=54b300c91b61ad10
dashboard link: https://syzkaller.appspot.com/bug?extid=3e2c95229d1ab81a0bfd
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=17626f16580000
kernel config: https://syzkaller.appspot.com/x/.config?x=54b300c91b61ad10
dashboard link: https://syzkaller.appspot.com/bug?extid=3e2c95229d1ab81a0bfd
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
syzbot
Apr 18, 2026, 9:22:04 AM (2 days ago) Apr 18
to linux-...@vger.kernel.org, syzkall...@googlegroups.com, tri...@gmail.com
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
syzbot tried to test the proposed patch but the build/boot failed:
lost connection to test machine
syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x189000)
Warning: Permanently added '[localhost]:3088' (ED25519) to the list of known hosts.
[ 97.018116][ T792] cfg80211: failed to load regulatory.db
2026/04/18 13:19:40 parsed 1 programs
[ 99.795736][ T5312] cgroup: Unknown subsys name 'net'
[ 99.853077][ T5312] cgroup: Unknown subsys name 'cpuset'
[ 99.860170][ T5312] cgroup: Unknown subsys name 'rlimit'
[ 143.089985][ T1317] ieee802154 phy0 wpan0: encryption failed: -22
[ 143.093657][ T1317] ieee802154 phy1 wpan1: encryption failed: -22
[ 151.426707][ T1015] ata1.00: exception Emask 0x0 SAct 0x4000 SErr 0x0 action 0x6 frozen
[ 151.430766][ T1015] ata1.00: failed command: WRITE FPDMA QUEUED
[ 151.433794][ T1015] ata1.00: cmd 61/48:70:86:69:04/0c:00:00:00:00/40 tag 14 ncq dma 1609728 ou
[ 151.433794][ T1015] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[ 151.444306][ T1015] ata1.00: status: { DRDY }
[ 151.447876][ T1015] ata1: hard resetting link
[ 151.768951][ T1015] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 151.775733][ T1015] ata1.00: configured for UDMA/100
[ 151.779901][ T1015] ata1: EH complete
qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000)
[ 204.530424][ T1317] ieee802154 phy0 wpan0: encryption failed: -22
[ 204.533680][ T1317] ieee802154 phy1 wpan1: encryption failed: -22
[ 212.226504][ T1015] ata1.00: NCQ disabled due to excessive errors
[ 212.229261][ T1015] ata1.00: exception Emask 0x0 SAct 0x20 SErr 0x0 action 0x6 frozen
[ 212.232865][ T1015] ata1.00: failed command: WRITE FPDMA QUEUED
[ 212.235571][ T1015] ata1.00: cmd 61/00:28:36:e1:04/20:00:00:00:00/40 tag 5 ncq dma 4194304 ou
[ 212.235571][ T1015] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[ 212.244212][ T1015] ata1.00: status: { DRDY }
[ 212.246880][ T1015] ata1: hard resetting link
[ 212.569679][ T1015] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 212.573877][ T1015] ata1.00: configured for UDMA/100
[ 212.577625][ T1015] ata1: EH complete
qemu-system-x86_64: hw/ide/core.c:934: ide_dma_cb: Assertion `prep_size >= 0 && prep_size <= n * 512' failed.
Connection to localhost closed by remote host.
Connection to localhost closed by remote host.
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
Tested on:
commit: 8541d8f7 Merge tag 'mtd/for-7.1' of git://git.kernel.o..
./tools/check-syzos.sh 2>/dev/null
Tested on:
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
kernel config: https://syzkaller.appspot.com/x/.config?x=293619ea06e31cd7
dashboard link: https://syzkaller.appspot.com/bug?extid=3e2c95229d1ab81a0bfd
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=11f31906580000
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
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