Re: [syzbot] [block?] WARNING in blk_mq_free_tag_set

Re: [syzbot] [block?] WARNING in blk_mq_free_tag_set

[syzbot]

Hello,

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

lost connection to test machine



Warning: Permanently added '10.128.1.133' (ED25519) to the list of known hosts.
2026/09/23 22:22:32 parsed 1 programs
2026/09/23 22:22:32 serving rpc on tcp://38311
[   80.752692][ T5630] cgroup: Unknown subsys name 'net'
[   80.884056][ T5630] cgroup: Unknown subsys name 'cpuset'
[   80.887002][ T5630] cgroup: Unknown subsys name 'rlimit'
Setting up swapspace version 1, size = 127995904 bytes
[   82.538994][ T5630] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
[   85.496053][ T1286] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   85.496079][ T1286] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   85.531000][ T1177] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   85.531023][ T1177] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   85.583390][ T5644] soft_limit_in_bytes is deprecated and will be removed. Writing any value to this file has no effect. Please report your usecase to linux-mm@kvack.org if you depend on this functionality.
[   85.587092][ T5644] ebtables: xtables 32bit compat interface no longer supported in namespaces and will be removed soon.
[   85.589928][ T5644] arp_tables: xtables 32bit compat interface no longer supported in namespaces and will be removed soon.
[   87.002024][ T5660] ip_tables: xtables 32bit compat interface no longer supported in namespaces and will be removed soon.
[   87.002551][ T5660] ip6_tables: xtables 32bit compat interface no longer supported in namespaces and will be removed soon.
[   87.076393][   T10] cfg80211: failed to load regulatory.db
[   87.473879][ T5672] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[   87.475240][ T5672] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[   87.477852][ T5672] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[   87.490326][ T5672] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[   87.491035][ T5672] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[   88.269004][ T5679] bridge0: port 1(bridge_slave_0) entered blocking state
[   88.269871][ T5679] bridge0: port 1(bridge_slave_0) entered disabled state
[   88.269983][ T5679] bridge_slave_0: entered allmulticast mode
[   88.271043][ T5679] bridge_slave_0: entered promiscuous mode
[   88.276598][ T5679] bridge0: port 2(bridge_slave_1) entered blocking state
[   88.276702][ T5679] bridge0: port 2(bridge_slave_1) entered disabled state
[   88.276877][ T5679] bridge_slave_1: entered allmulticast mode
[   88.278620][ T5679] bridge_slave_1: entered promiscuous mode
[   88.317810][ T5679] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[   88.321176][ T5679] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[   88.354044][ T5679] team0: Port device team_slave_0 added
[   88.355878][ T5679] team0: Port device team_slave_1 added
[   88.378475][ T5679] batman_adv: batadv0: Adding interface: batadv_slave_0
[   88.378487][ T5679] 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.
[   88.378505][ T5679] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[   88.382019][ T5679] batman_adv: batadv0: Adding interface: batadv_slave_1
[   88.382035][ T5679] 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.
[   88.382060][ T5679] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[   88.470363][ T5679] hsr_slave_0: entered promiscuous mode
[   88.471884][ T5679] hsr_slave_1: entered promiscuous mode
[   88.615879][ T5679] netdevsim netdevsim8 netdevsim0: renamed from eth0
[   88.624106][ T5679] 8021q: adding VLAN 0 to HW filter on device netdevsim0
[   88.626007][ T5679] netdevsim netdevsim8 netdevsim1: renamed from eth1
[   88.632773][ T5679] 8021q: adding VLAN 0 to HW filter on device netdevsim1
[   88.634150][ T5679] netdevsim netdevsim8 netdevsim2: renamed from eth2
[   88.647163][ T5679] 8021q: adding VLAN 0 to HW filter on device netdevsim2
[   88.648072][ T5679] netdevsim netdevsim8 netdevsim3: renamed from eth3
[   88.661771][ T5679] 8021q: adding VLAN 0 to HW filter on device netdevsim3
[   88.744000][ T5679] 8021q: adding VLAN 0 to HW filter on device bond0
[   88.767054][ T5679] 8021q: adding VLAN 0 to HW filter on device team0
[   88.776887][ T1286] bridge0: port 1(bridge_slave_0) entered blocking state
[   88.777039][ T1286] bridge0: port 1(bridge_slave_0) entered forwarding state
[   88.788827][ T1177] bridge0: port 2(bridge_slave_1) entered blocking state
[   88.789042][ T1177] bridge0: port 2(bridge_slave_1) entered forwarding state
[   89.099652][ T5679] 8021q: adding VLAN 0 to HW filter on device batadv0
[   89.290291][ T5679] veth0_vlan: entered promiscuous mode
[   89.296863][ T5679] veth1_vlan: entered promiscuous mode
[   89.330971][ T5679] veth0_macvtap: entered promiscuous mode
[   89.334462][ T5679] veth1_macvtap: entered promiscuous mode
[   89.352460][ T5679] batman_adv: batadv0: Interface activated: batadv_slave_0
[   89.367216][ T5679] batman_adv: batadv0: Interface activated: batadv_slave_1
[   89.422390][ T1177] netdevsim netdevsim8 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[   89.422436][ T1177] netdevsim netdevsim8 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[   89.422468][ T1177] netdevsim netdevsim8 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[   89.422499][ T1177] netdevsim netdevsim8 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[   89.509842][ T1098] netdevsim netdevsim8 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[   89.585930][ T1098] netdevsim netdevsim8 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[   89.648640][ T1098] netdevsim netdevsim8 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[   89.703114][ T1098] netdevsim netdevsim8 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
execution of simple program fails: NOTFAIL: arptable checkpoint: getsockopt(ARPT_SO_GET_ENTRIES) failed. table=filter (errno 22: Invalid argument).
[   90.718117][ T1098] bridge_slave_1: left allmulticast mode
[   90.718178][ T1098] bridge_slave_1: left promiscuous mode
[   90.718874][ T1098] bridge0: port 2(bridge_slave_1) entered disabled state
[   90.746800][ T1098] bridge_slave_0: left allmulticast mode
[   90.746834][ T1098] bridge_slave_0: left promiscuous mode
[   90.747521][ T1098] bridge0: port 1(bridge_slave_0) entered disabled state
[   90.979230][ T1098] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
[   90.995086][ T1098] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
[   90.996813][ T1098] bond0 (unregistering): Released all slaves
[   91.148321][ T1098] hsr_slave_0: left promiscuous mode
[   91.155032][ T1098] hsr_slave_1: left promiscuous mode
[   91.156175][ T1098] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[   91.156208][ T1098] batman_adv: batadv0: Removing interface: batadv_slave_0
[   91.178520][ T1098] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[   91.178552][ T1098] batman_adv: batadv0: Removing interface: batadv_slave_1
[   91.206888][ T1098] veth1_macvtap: left promiscuous mode
[   91.206945][ T1098] veth0_macvtap: left promiscuous mode
[   91.207052][ T1098] veth1_vlan: left promiscuous mode
[   91.207135][ T1098] veth0_vlan: left promiscuous mode
[   91.763448][ T1098] team0 (unregistering): Port device team_slave_1 removed
[   91.783056][ T1098] team0 (unregistering): Port device team_slave_0 removed
[   91.887617][ T5280] 8021q: adding VLAN 0 to HW filter on device eth1
[   92.266831][ T5280] 8021q: adding VLAN 0 to HW filter on device eth2
[   92.765505][ T5280] 8021q: adding VLAN 0 to HW filter on device eth3
[   93.215118][ T5280] 8021q: adding VLAN 0 to HW filter on device eth4


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-build2242253634=/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='go1.26.0'
GOWORK=''
PKG_CONFIG='pkg-config'

git status (err=<nil>)
HEAD detached at abce1216496
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=abce12164965bc4439aad38d787d980496e3f106 -X github.com/google/syzkaller/prog.gitRevisionDate=20260922-204430"  ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=abce12164965bc4439aad38d787d980496e3f106 -X github.com/google/syzkaller/prog.gitRevisionDate=20260922-204430"  ./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=abce12164965bc4439aad38d787d980496e3f106 -X github.com/google/syzkaller/prog.gitRevisionDate=20260922-204430"  -o ./bin/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 -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_386=1 \
	-DHOSTGOOS_linux=1 -DGIT_REVISION=\"abce12164965bc4439aad38d787d980496e3f106\"
/usr/bin/ld: /tmp/cc8l0oCx.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x145): 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
[INFO] Unsupported architecture '386', skipping check.



Tested on:

commit:         f0100363 Merge tag 'xfs-fixes-7.3-rc5' of gitolite.ker..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=9d4242cb1c54cdf7
dashboard link: https://syzkaller.appspot.com/bug?extid=02b37e31e64ea5cb6d29
compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
userspace arch: i386
patch:          https://syzkaller.appspot.com/x/patch.diff?x=107bb405580000

Re: [syzbot] [block?] WARNING in blk_mq_free_tag_set

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit:    a8406e6c0b79 Add linux-next specific files for 20260825
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=114f1625580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=da8932b2925a9804
dashboard link: https://syzkaller.appspot.com/bug?extid=02b37e31e64ea5cb6d29
compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13dad979580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10136979580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/bd019bacac75/disk-a8406e6c.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/e47580ccc38d/vmlinux-a8406e6c.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b7909a5638c6/bzImage-a8406e6c.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+02b37e31e64ea5cb6d29@syzkaller.appspotmail.com

------------[ cut here ]------------
timer_delete_sync(&sdp->delay_work) && rcu_segcblist_n_cbs(&sdp->srcu_cblist)
WARNING: kernel/rcu/srcutree.c:707 at cleanup_srcu_struct+0x3d6/0x8b0 kernel/rcu/srcutree.c:706, CPU#0: syz.0.1231/9288
Modules linked in:
CPU: 0 UID: 0 PID: 9288 Comm: syz.0.1231 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:cleanup_srcu_struct+0x3d6/0x8b0 kernel/rcu/srcutree.c:706
Code: f3 8b 00 48 83 7d 00 00 4c 8b 74 24 10 0f 85 dd 03 00 00 41 ff c5 41 83 e5 0f 41 83 fd 07 0f 86 e2 fe ff ff e9 ab 00 00 00 90 <0f> 0b 90 4c 8d b5 00 02 00 00 4c 89 f3 48 c1 eb 03 48 b8 00 00 00
RSP: 0018:ffffc900033c7cf0 EFLAGS: 00010206
RAX: 1ffffd1ffff81745 RBX: 0000607edaf36940 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: ffffffff8e478a87 RDI: 00000000ffffffff
RBP: ffffe8ffffc0b940 R08: ffffffff907a4f7f R09: 1ffffffff20f49ef
R10: dffffc0000000000 R11: fffffbfff20f49f0 R12: ffff888054a1e800
R13: 0000000000000000 R14: ffffe8ffffc0ba28 R15: 1ffffffff1ce95de
FS:  00007f73abf2d6c0(0000) GS:ffff888124cd5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000100 CR3: 0000000076d8a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 blk_mq_free_tag_set+0x617/0x790 block/blk-mq.c:4976
 loop_remove+0x4e/0xc0 drivers/block/loop.c:2143
 loop_control_remove drivers/block/loop.c:2201 [inline]
 loop_control_ioctl+0x4a6/0x5a0 drivers/block/loop.c:2243
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f73aaf9e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f73abf2d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f73ab225fa0 RCX: 00007f73aaf9e0d9
RDX: 0000000000000001 RSI: 0000000000004c81 RDI: 0000000000000003
RBP: 00007f73ab035024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f73ab226038 R14: 00007f73ab225fa0 R15: 00007ffe4f51e5e8
 </TASK>


---
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

[syzbot] [block?] WARNING in blk_mq_free_tag_set

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    6b8c8af514d7 Add linux-next specific files for 20260807
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=11d2bfb9580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=6d343b54cc50df0f
dashboard link: https://syzkaller.appspot.com/bug?extid=02b37e31e64ea5cb6d29
compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10f56132580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/71ff4edcb608/disk-6b8c8af5.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1f5fa331d8f2/vmlinux-6b8c8af5.xz
kernel image: https://storage.googleapis.com/syzbot-assets/f993558ec63b/bzImage-6b8c8af5.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+02b37e31e64ea5cb6d29@syzkaller.appspotmail.com

------------[ cut here ]------------
timer_delete_sync(&sdp->delay_work)
WARNING: kernel/rcu/srcutree.c:706 at cleanup_srcu_struct+0x3aa/0x890 kernel/rcu/srcutree.c:706, CPU#1: kworker/u8:11/3800
Modules linked in:
CPU: 1 UID: 0 PID: 3800 Comm: kworker/u8:11 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: nbd-del nbd_dev_remove_work
RIP: 0010:cleanup_srcu_struct+0x3aa/0x890 kernel/rcu/srcutree.c:706
Code: b9 8a 00 48 83 7d 00 00 4c 8b 74 24 10 0f 85 dd 03 00 00 41 ff c5 41 83 e5 0f 41 83 fd 07 0f 86 0e ff ff ff e9 ab 00 00 00 90 <0f> 0b 90 4c 8d b5 00 02 00 00 4c 89 f3 48 c1 eb 03 48 b8 00 00 00
RSP: 0018:ffffc9000e69f9d0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000607edad2e8c0 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8e253559 RDI: 00000000ffffffff
RBP: ffffe8ffffc3a8c0 R08: ffffffff9058fb7f R09: 1ffffffff20b1f6f
R10: dffffc0000000000 R11: fffffbfff20b1f70 R12: ffff88802b760000
R13: 0000000000000000 R14: ffffffff8e5237d0 R15: 1ffffffff1ca47de
FS:  0000000000000000(0000) GS:ffff88812500c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb3d026e9c CR3: 000000000e948000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 blk_mq_free_tag_set+0x617/0x780 block/blk-mq.c:4976
 nbd_dev_remove drivers/block/nbd.c:269 [inline]
 nbd_dev_remove_work+0x4f/0xe0 drivers/block/nbd.c:284
 process_one_work kernel/workqueue.c:3375 [inline]
 process_scheduled_works+0xc4e/0x1630 kernel/workqueue.c:3458
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3539
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>


---
This report is generated by a bot. It may contain errors.
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If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
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#syz dup: exact-subject-of-another-report

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#syz undup