Extracting prog: 7m0.389618049s
Minimizing prog: 1h28m3.73816141s
Simplifying prog options: 14m38.518498774s
Extracting C: 5m9.532168161s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_ublk_setup_io_uring-openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
syz_ublk_setup_io_uring(0x1d, 0x0, 0x0, 0x0, 0x0)
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program did not crash
single: failed to extract reproducer
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_ublk_setup_io_uring-openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
syz_ublk_setup_io_uring(0x1d, 0x0, 0x0, 0x0, 0x0)
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program crashed: no output from test machine
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_ublk_setup_io_uring-openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
syz_ublk_setup_io_uring(0x1d, 0x0, 0x0, 0x0, 0x0)
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)

program did not crash
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_ublk_setup_io_uring-openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
syz_ublk_setup_io_uring(0x1d, 0x0, 0x0, 0x0, 0x0)
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program did not crash
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_ublk_setup_io_uring-openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
syz_ublk_setup_io_uring(0x1d, 0x0, 0x0, 0x0, 0x0)
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program did not crash
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_ublk_setup_io_uring-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
syz_ublk_setup_io_uring(0x1d, 0x0, 0x0, 0x0, 0x0)
write$vga_arbiter(0xffffffffffffffff, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(0xffffffffffffffff, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(0xffffffffffffffff, &(0x7f0000000100)=@unlock_all, 0xb)

program did not crash
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program crashed: no output from test machine
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program did not crash
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
r0 = openat$vga_arbiter(0xffffffffffffff9c, 0x0, 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program did not crash
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, 0x0, 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program did not crash
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program did not crash
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, 0x0, 0x0) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program did not crash
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
program crashed: no output from test machine
suppressed program crash: no output from test machine
simplifying guilty program options
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

VM was preempted during syz execution: failed to run command in VM: instance is preempted, retrying
program did not crash
testing program (duration=7m53.018576988s, {Threaded:true 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program crashed: INFO: rcu detected stall in corrupted
a never seen crash title: INFO: rcu detected stall in corrupted, ignore
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program crashed: no output from test machine
validation run: crashed=true
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program crashed: no output from test machine
validation run: crashed=true
testing program (duration=7m53.018576988s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$vga_arbiter-write$vga_arbiter-write$vga_arbiter-write$vga_arbiter
detailed listing:
executing program 0:
r0 = openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000000), 0x80082, 0x0)
write$vga_arbiter(r0, &(0x7f0000000380)=ANY=[@ANYBLOB='lock io'], 0xc)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb) (async)
write$vga_arbiter(r0, &(0x7f0000000100)=@unlock_all, 0xb)

program crashed: no output from test machine
validation run: crashed=true
reproducing took 2h10m45.38329194s
repro crashed as (corrupted=false):

final repro crashed as (corrupted=false):