Extracting prog: 1m24.17691383s
Minimizing prog: 2m57.01071054s
Simplifying prog options: 11m58.083410456s
Extracting C: 5m36.74949323s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_io_uring_submit-io_uring_enter
detailed listing:
executing program 0:
syz_open_dev$MSR(&(0x7f00000001c0), 0x0, 0x0)
r0 = syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x400, 0x1, 0x40000333}, &(0x7f00000006c0)=<r1=>0x0, &(0x7f0000000240)=<r2=>0x0)
syz_memcpy_off$IO_URING_METADATA_GENERIC(r1, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4)
syz_io_uring_submit(r1, r2, &(0x7f0000000200)=@IORING_OP_READV=@pass_iovec={0x1, 0x0, 0x0, @fd_index=0x4, 0x0, &(0x7f0000000600)=[{&(0x7f0000001800)=""/216, 0xfffffe62}], 0x1})
io_uring_enter(r0, 0x847ba, 0x79c, 0xe, 0x0, 0x0)

program crashed: lost connection to test machine
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_io_uring_submit
detailed listing:
executing program 0:
syz_open_dev$MSR(&(0x7f00000001c0), 0x0, 0x0)
syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x400, 0x1, 0x40000333}, &(0x7f00000006c0)=<r0=>0x0, &(0x7f0000000240)=<r1=>0x0)
syz_memcpy_off$IO_URING_METADATA_GENERIC(r0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4)
syz_io_uring_submit(r0, r1, &(0x7f0000000200)=@IORING_OP_READV=@pass_iovec={0x1, 0x0, 0x0, @fd_index=0x4, 0x0, &(0x7f0000000600)=[{&(0x7f0000001800)=""/216, 0xfffffe62}], 0x1})

program crashed: SYZFAIL: failed to recv rpc
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC
detailed listing:
executing program 0:
syz_open_dev$MSR(&(0x7f00000001c0), 0x0, 0x0)
syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x400, 0x1, 0x40000333}, &(0x7f00000006c0)=<r0=>0x0, &(0x7f0000000240))
syz_memcpy_off$IO_URING_METADATA_GENERIC(r0, 0x4, &(0x7f0000000180)=0xfffffffc, 0x0, 0x4)

program crashed: SYZFAIL: failed to recv rpc
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR-syz_io_uring_setup
detailed listing:
executing program 0:
syz_open_dev$MSR(&(0x7f00000001c0), 0x0, 0x0)
syz_io_uring_setup(0xbdc, &(0x7f0000000640)={0x0, 0xec25, 0x400, 0x1, 0x40000333}, &(0x7f00000006c0), &(0x7f0000000240))

program crashed: lost connection to test machine
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR
detailed listing:
executing program 0:
syz_open_dev$MSR(&(0x7f00000001c0), 0x0, 0x0)

program crashed: SYZFAIL: failed to recv rpc
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR
detailed listing:
executing program 0:
syz_open_dev$MSR(0x0, 0x0, 0x0)

program crashed: SYZFAIL: failed to recv rpc
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR
detailed listing:
executing program 0:
syz_open_dev$MSR(0x0, 0x0, 0x0)

program crashed: lost connection to test machine
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR
detailed listing:
executing program 0:
syz_open_dev$MSR(0x0, 0x0, 0x0)

program crashed: SYZFAIL: failed to recv rpc
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR
detailed listing:
executing program 0:
syz_open_dev$MSR(0x0, 0x0, 0x0)

program crashed: lost connection to test machine
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR
detailed listing:
executing program 0:
syz_open_dev$MSR(0x0, 0x0, 0x0)

program crashed: lost connection to test machine
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$MSR
detailed listing:
executing program 0:
syz_open_dev$MSR(0x0, 0x0, 0x0)

program crashed: SYZFAIL: failed to recv rpc
validation run: crashed=true
reproducing took 23m27.9442711s
repro crashed as (corrupted=false):
Warning: Permanently added '[localhost]:32013' (ED25519) to the list of known hosts.
2025/12/31 16:20:43 parsed 1 programs
SYZFAIL: failed to recv rpc
fd=3 want=4 recv=0 n=0 (errno 22: Invalid argument)
aborting RPC server: mismatching manager/executor arches: amd64 vs 386 (full request: `&flatrpc.ConnectRequestRawT{Cookie:0xe7bfa35184e98355, Id:0, Arch:"386", GitRevision:"d1b870e1003b52891d2196c1e2ee42fe905010ba", SyzRevision:"5e29b4d4fd108d8b9f527cb3e326d4a12d8f0ded"}`)

final repro crashed as (corrupted=false):
Warning: Permanently added '[localhost]:32013' (ED25519) to the list of known hosts.
2025/12/31 16:20:43 parsed 1 programs
SYZFAIL: failed to recv rpc
fd=3 want=4 recv=0 n=0 (errno 22: Invalid argument)
aborting RPC server: mismatching manager/executor arches: amd64 vs 386 (full request: `&flatrpc.ConnectRequestRawT{Cookie:0xe7bfa35184e98355, Id:0, Arch:"386", GitRevision:"d1b870e1003b52891d2196c1e2ee42fe905010ba", SyzRevision:"5e29b4d4fd108d8b9f527cb3e326d4a12d8f0ded"}`)