Message-ID: <693f37d9.a70a0220.104cf0.0330.GAE@google.com>
Date: Sun, 14 Dec 2025 14:19:05 -0800
From: syzbot <syzbot+1c70732df5fd4f0e4fbb@...kaller.appspotmail.com>
To: eraykrdg1@...il.com, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [fs?] memory leak in adfs_init_fs_context

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

SYZFAIL: failed to recv rpc

SYZFAIL: failed to recv rpc


Warning: Permanently added '10.128.1.225' (ED25519) to the list of known hosts.
2025/12/14 22:17:44 parsed 1 programs
[   40.760074][ T5814] cgroup: Unknown subsys name 'net'
[   40.846544][ T5814] cgroup: Unknown subsys name 'cpuset'
[   40.853552][ T5814] cgroup: Unknown subsys name 'rlimit'
Setting up swapspace version 1, size = 127995904 bytes
[   48.749814][ T5814] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
[   49.998856][ T5827] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@...ck.org if you depend on this functionality.
[   50.288759][ T5847] chnl_net:caif_netlink_parms(): no params data found
[   50.313070][ T5847] bridge0: port 1(bridge_slave_0) entered blocking state
[   50.320409][ T5847] bridge0: port 1(bridge_slave_0) entered disabled state
[   50.327549][ T5847] bridge_slave_0: entered allmulticast mode
[   50.333830][ T5847] bridge_slave_0: entered promiscuous mode
[   50.341481][ T5847] bridge0: port 2(bridge_slave_1) entered blocking state
[   50.349768][ T5847] bridge0: port 2(bridge_slave_1) entered disabled state
[   50.357266][ T5847] bridge_slave_1: entered allmulticast mode
[   50.363438][ T5847] bridge_slave_1: entered promiscuous mode
[   50.374980][ T5847] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[   50.384999][ T5847] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[   50.398552][ T5847] team0: Port device team_slave_0 added
[   50.404698][ T5847] team0: Port device team_slave_1 added
[   50.415314][ T5847] batman_adv: batadv0: Adding interface: batadv_slave_0
[   50.422257][ T5847] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[   50.448268][ T5847] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[   50.459550][ T5847] batman_adv: batadv0: Adding interface: batadv_slave_1
[   50.466792][ T5847] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[   50.492780][ T5847] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[   50.511794][ T5847] hsr_slave_0: entered promiscuous mode
[   50.517681][ T5847] hsr_slave_1: entered promiscuous mode
[   50.546550][ T5847] netdevsim netdevsim0 netdevsim0: renamed from eth0
[   50.554507][ T5847] netdevsim netdevsim0 netdevsim1: renamed from eth1
[   50.562970][ T5847] netdevsim netdevsim0 netdevsim2: renamed from eth2
[   50.570577][ T5847] netdevsim netdevsim0 netdevsim3: renamed from eth3
[   50.582378][ T5847] bridge0: port 2(bridge_slave_1) entered blocking state
[   50.589968][ T5847] bridge0: port 2(bridge_slave_1) entered forwarding state
[   50.597254][ T5847] bridge0: port 1(bridge_slave_0) entered blocking state
[   50.604285][ T5847] bridge0: port 1(bridge_slave_0) entered forwarding state
[   50.620737][ T5847] 8021q: adding VLAN 0 to HW filter on device bond0
[   50.629704][ T2110] bridge0: port 1(bridge_slave_0) entered disabled state
[   50.637191][ T2110] bridge0: port 2(bridge_slave_1) entered disabled state
[   50.646684][ T5847] 8021q: adding VLAN 0 to HW filter on device team0
[   50.654959][  T182] bridge0: port 1(bridge_slave_0) entered blocking state
[   50.662020][  T182] bridge0: port 1(bridge_slave_0) entered forwarding state
[   50.671112][ T2110] bridge0: port 2(bridge_slave_1) entered blocking state
[   50.678182][ T2110] bridge0: port 2(bridge_slave_1) entered forwarding state
[   50.718813][ T5847] 8021q: adding VLAN 0 to HW filter on device batadv0
[   50.733071][ T5847] veth0_vlan: entered promiscuous mode
[   50.740227][ T5847] veth1_vlan: entered promiscuous mode
[   50.750549][ T5847] veth0_macvtap: entered promiscuous mode
[   50.757401][ T5847] veth1_macvtap: entered promiscuous mode
[   50.767087][ T5847] batman_adv: batadv0: Interface activated: batadv_slave_0
[   50.776195][ T5847] batman_adv: batadv0: Interface activated: batadv_slave_1
[   50.784802][  T336] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[   50.793680][  T336] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[   50.802584][  T336] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[   50.811945][  T336] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[   50.857670][  T182] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[   50.883843][ T5135] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[   50.891691][ T5135] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[   50.899005][ T5135] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[   50.907282][ T5135] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[   50.914721][  T182] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[   50.915268][ T5135] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[   50.976589][  T182] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[   51.006628][  T182] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[   51.264854][  T336] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   51.274453][  T336] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   51.284604][  T336] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   51.292718][  T336] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
2025/12/14 22:17:56 executed programs: 0
[   53.667289][  T182] bridge_slave_1: left allmulticast mode
[   53.672948][  T182] bridge_slave_1: left promiscuous mode
[   53.679429][  T182] bridge0: port 2(bridge_slave_1) entered disabled state
[   53.686953][  T182] bridge_slave_0: left allmulticast mode
[   53.692571][  T182] bridge_slave_0: left promiscuous mode
[   53.698282][  T182] bridge0: port 1(bridge_slave_0) entered disabled state
[   53.717145][  T182] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
[   53.726561][  T182] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
[   53.736266][  T182] bond0 (unregistering): Released all slaves
[   53.806502][  T182] hsr_slave_0: left promiscuous mode
[   53.811955][  T182] hsr_slave_1: left promiscuous mode
[   53.817467][  T182] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[   53.824830][  T182] batman_adv: batadv0: Removing interface: batadv_slave_0
[   53.832282][  T182] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[   53.839713][  T182] batman_adv: batadv0: Removing interface: batadv_slave_1
[   53.848340][  T182] veth1_macvtap: left promiscuous mode
[   53.853883][  T182] veth0_macvtap: left promiscuous mode
[   53.859443][  T182] veth1_vlan: left promiscuous mode
[   53.864652][  T182] veth0_vlan: left promiscuous mode
[   53.887392][  T182] team0 (unregistering): Port device team_slave_1 removed
[   53.897695][  T182] team0 (unregistering): Port device team_slave_0 removed
[   57.036318][   T50] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[   57.043825][   T50] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[   57.051141][   T50] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[   57.058534][   T50] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[   57.065979][   T50] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[   57.100904][ T5987] chnl_net:caif_netlink_parms(): no params data found
[   57.119366][ T5987] bridge0: port 1(bridge_slave_0) entered blocking state
[   57.127002][ T5987] bridge0: port 1(bridge_slave_0) entered disabled state
[   57.134166][ T5987] bridge_slave_0: entered allmulticast mode
[   57.140647][ T5987] bridge_slave_0: entered promiscuous mode
[   57.147369][ T5987] bridge0: port 2(bridge_slave_1) entered blocking state
[   57.154562][ T5987] bridge0: port 2(bridge_slave_1) entered disabled state
[   57.161755][ T5987] bridge_slave_1: entered allmulticast mode
[   57.167935][ T5987] bridge_slave_1: entered promiscuous mode
[   57.178268][ T5987] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[   57.188122][ T5987] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[   57.201767][ T5987] team0: Port device team_slave_0 added
[   57.208482][ T5987] team0: Port device team_slave_1 added
[   57.219095][ T5987] batman_adv: batadv0: Adding interface: batadv_slave_0
[   57.226090][ T5987] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[   57.252518][ T5987] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[   57.263509][ T5987] batman_adv: batadv0: Adding interface: batadv_slave_1
[   57.270689][ T5987] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[   57.296997][ T5987] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[   57.313719][ T5987] hsr_slave_0: entered promiscuous mode
[   57.319704][ T5987] hsr_slave_1: entered promiscuous mode
[   57.491380][ T5987] netdevsim netdevsim0 netdevsim0: renamed from eth0
[   57.500328][ T5987] netdevsim netdevsim0 netdevsim1: renamed from eth1
[   57.508909][ T5987] netdevsim netdevsim0 netdevsim2: renamed from eth2
[   57.517055][ T5987] netdevsim netdevsim0 netdevsim3: renamed from eth3
[   57.546048][ T5987] bridge0: port 2(bridge_slave_1) entered blocking state
[   57.553236][ T5987] bridge0: port 2(bridge_slave_1) entered forwarding state
[   57.560592][ T5987] bridge0: port 1(bridge_slave_0) entered blocking state
[   57.567746][ T5987] bridge0: port 1(bridge_slave_0) entered forwarding state
[   57.588988][ T5987] 8021q: adding VLAN 0 to HW filter on device bond0
[   57.602398][ T1914] bridge0: port 1(bridge_slave_0) entered disabled state
[   57.615522][ T1914] bridge0: port 2(bridge_slave_1) entered disabled state
[   57.631386][ T5987] 8021q: adding VLAN 0 to HW filter on device team0
[   57.641134][  T182] bridge0: port 1(bridge_slave_0) entered blocking state
[   57.648228][  T182] bridge0: port 1(bridge_slave_0) entered forwarding state
[   57.657921][ T1914] bridge0: port 2(bridge_slave_1) entered blocking state
[   57.665277][ T1914] bridge0: port 2(bridge_slave_1) entered forwarding state
[   57.728484][ T5987] 8021q: adding VLAN 0 to HW filter on device batadv0
[   57.753422][ T5987] veth0_vlan: entered promiscuous mode
[   57.761873][ T5987] veth1_vlan: entered promiscuous mode
[   57.776420][ T5987] veth0_macvtap: entered promiscuous mode
[   57.783392][ T5987] veth1_macvtap: entered promiscuous mode
[   57.793989][ T5987] batman_adv: batadv0: Interface activated: batadv_slave_0
[   57.804351][ T5987] batman_adv: batadv0: Interface activated: batadv_slave_1
[   57.814363][  T182] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[   57.835300][  T182] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[   57.844102][  T182] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[   57.855680][  T182] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[   57.872009][   T35] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
SYZFAIL: failed to recv rpc
[   57.879896][ T1914] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   57.888257][ T1914] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   57.895768][   T35] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50


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-build3133765014=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod'
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'
GOTELEMETRY='local'
GOTELEMETRYDIR='/syzkaller/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.24.4'
GOWORK=''
PKG_CONFIG='pkg-config'

git status (err=<nil>)
HEAD detached at d6526ea3e
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=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115"  ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115"  ./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=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115"  -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=\"d6526ea3e6ad9081c902859bbb80f9f840377cb4\"
/usr/bin/ld: /tmp/ccLbkRWx.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): 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:         8f0b4cce Linux 6.19-rc1
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=d60836e327fd6756
dashboard link: https://syzkaller.appspot.com/bug?extid=1c70732df5fd4f0e4fbb
compiler:       gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=166d99c2580000

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