Extracting prog: 1m8.497189241s
Minimizing prog: 6m7.0143534s
Simplifying prog options: 4m20.711218836s
Extracting C: 41.161829222s
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:5 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$binfmt_register-write$binfmt_register-syz_mount_image$fuse-mount$bind-mount$bind
detailed listing:
executing program 0:
r0 = openat$binfmt_register(0xffffffffffffff9c, &(0x7f00000002c0), 0x1, 0x0)
write$binfmt_register(r0, &(0x7f0000000280)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x6, 0x3a, ')', 0x3a, 'E', 0x3a, './file1'}, 0x29)
syz_mount_image$fuse(0x0, &(0x7f00000000c0)='./file0\x00', 0x440, 0x0, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000500)='./file0\x00', &(0x7f0000000180)='./file0\x00', 0x0, 0x1333404, 0x0)
mount$bind(&(0x7f0000000240)='.\x00', &(0x7f0000000280)='./file0\x00', 0x0, 0x1005848, 0x0)

program crashed: SYZFAIL: posix_spawnp failed
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=32.160705246s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$binfmt_register-write$binfmt_register-syz_mount_image$fuse-mount$bind
detailed listing:
executing program 0:
r0 = openat$binfmt_register(0xffffffffffffff9c, &(0x7f00000002c0), 0x1, 0x0)
write$binfmt_register(r0, &(0x7f0000000280)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x6, 0x3a, ')', 0x3a, 'E', 0x3a, './file1'}, 0x29)
syz_mount_image$fuse(0x0, &(0x7f00000000c0)='./file0\x00', 0x440, 0x0, 0x0, 0x0, 0x0)
mount$bind(&(0x7f0000000500)='./file0\x00', &(0x7f0000000180)='./file0\x00', 0x0, 0x1333404, 0x0)

program crashed: SYZFAIL: posix_spawnp failed
testing program (duration=32.160705246s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$binfmt_register-write$binfmt_register-syz_mount_image$fuse
detailed listing:
executing program 0:
r0 = openat$binfmt_register(0xffffffffffffff9c, &(0x7f00000002c0), 0x1, 0x0)
write$binfmt_register(r0, &(0x7f0000000280)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x6, 0x3a, ')', 0x3a, 'E', 0x3a, './file1'}, 0x29)
syz_mount_image$fuse(0x0, &(0x7f00000000c0)='./file0\x00', 0x440, 0x0, 0x0, 0x0, 0x0)

program crashed: SYZFAIL: posix_spawnp failed
testing program (duration=32.160705246s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$binfmt_register-write$binfmt_register
detailed listing:
executing program 0:
r0 = openat$binfmt_register(0xffffffffffffff9c, &(0x7f00000002c0), 0x1, 0x0)
write$binfmt_register(r0, &(0x7f0000000280)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x6, 0x3a, ')', 0x3a, 'E', 0x3a, './file1'}, 0x29)

program crashed: SYZFAIL: posix_spawnp failed
testing program (duration=32.160705246s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$binfmt_register
detailed listing:
executing program 0:
openat$binfmt_register(0xffffffffffffff9c, &(0x7f00000002c0), 0x1, 0x0)

program did not crash
testing program (duration=32.160705246s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): write$binfmt_register
detailed listing:
executing program 0:
write$binfmt_register(0xffffffffffffffff, &(0x7f0000000280)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x6, 0x3a, ')', 0x3a, 'E', 0x3a, './file1'}, 0x29)

program did not crash
testing program (duration=32.160705246s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$binfmt_register-write$binfmt_register
detailed listing:
executing program 0:
r0 = openat$binfmt_register(0xffffffffffffff9c, 0x0, 0x1, 0x0)
write$binfmt_register(r0, &(0x7f0000000280)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x6, 0x3a, ')', 0x3a, 'E', 0x3a, './file1'}, 0x29)

program did not crash
testing program (duration=32.160705246s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$binfmt_register-write$binfmt_register
detailed listing:
executing program 0:
r0 = openat$binfmt_register(0xffffffffffffff9c, &(0x7f00000002c0), 0x1, 0x0)
write$binfmt_register(r0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=32.160705246s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$binfmt_register-write$binfmt_register
program did not crash
simplifying guilty program options
testing program (duration=32.160705246s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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$binfmt_register-write$binfmt_register
detailed listing:
executing program 0:
r0 = openat$binfmt_register(0xffffffffffffff9c, &(0x7f00000002c0), 0x1, 0x0)
write$binfmt_register(r0, &(0x7f0000000280)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x6, 0x3a, ')', 0x3a, 'E', 0x3a, './file1'}, 0x29)

program crashed: SYZFAIL: posix_spawnp failed
extracting C reproducer
testing compiled C program (duration=32.160705246s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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$binfmt_register-write$binfmt_register
program did not crash
testing program (duration=32.160705246s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false 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$binfmt_register-write$binfmt_register
detailed listing:
executing program 0:
r0 = openat$binfmt_register(0xffffffffffffff9c, &(0x7f00000002c0), 0x1, 0x0)
write$binfmt_register(r0, &(0x7f0000000280)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x6, 0x3a, ')', 0x3a, 'E', 0x3a, './file1'}, 0x29)

program did not crash
testing program (duration=32.160705246s, {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: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$binfmt_register-write$binfmt_register
detailed listing:
executing program 0:
r0 = openat$binfmt_register(0xffffffffffffff9c, &(0x7f00000002c0), 0x1, 0x0)
write$binfmt_register(r0, &(0x7f0000000280)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x6, 0x3a, ')', 0x3a, 'E', 0x3a, './file1'}, 0x29)

program crashed: SYZFAIL: posix_spawnp failed
extracting C reproducer
testing compiled C program (duration=32.160705246s, {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: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$binfmt_register-write$binfmt_register
program did not crash
testing program (duration=32.160705246s, {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: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$binfmt_register-write$binfmt_register
detailed listing:
executing program 0:
r0 = openat$binfmt_register(0xffffffffffffff9c, &(0x7f00000002c0), 0x1, 0x0)
write$binfmt_register(r0, &(0x7f0000000280)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x6, 0x3a, ')', 0x3a, 'E', 0x3a, './file1'}, 0x29)

program crashed: SYZFAIL: posix_spawnp failed
validation run: crashed=true
testing program (duration=32.160705246s, {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: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$binfmt_register-write$binfmt_register
detailed listing:
executing program 0:
r0 = openat$binfmt_register(0xffffffffffffff9c, &(0x7f00000002c0), 0x1, 0x0)
write$binfmt_register(r0, &(0x7f0000000280)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x6, 0x3a, ')', 0x3a, 'E', 0x3a, './file1'}, 0x29)

program crashed: SYZFAIL: posix_spawnp failed
validation run: crashed=true
testing program (duration=32.160705246s, {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: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$binfmt_register-write$binfmt_register
detailed listing:
executing program 0:
r0 = openat$binfmt_register(0xffffffffffffff9c, &(0x7f00000002c0), 0x1, 0x0)
write$binfmt_register(r0, &(0x7f0000000280)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x6, 0x3a, ')', 0x3a, 'E', 0x3a, './file1'}, 0x29)

program crashed: SYZFAIL: posix_spawnp failed
validation run: crashed=true
reproducing took 15m30.642968396s
repro crashed as (corrupted=false):
2026/02/27 10:45:17 executed programs: 279
2026/02/27 10:45:22 executed programs: 579
SYZFAIL: posix_spawnp failed
 (errno 2: No such file or directory)
connection error: failed to recv *flatrpc.ExecutorMessageRawT: read tcp 127.0.0.1:35999->127.0.0.1:36596: read: connection reset by peer

final repro crashed as (corrupted=false):
2026/02/27 10:45:17 executed programs: 279
2026/02/27 10:45:22 executed programs: 579
SYZFAIL: posix_spawnp failed
 (errno 2: No such file or directory)
connection error: failed to recv *flatrpc.ExecutorMessageRawT: read tcp 127.0.0.1:35999->127.0.0.1:36596: read: connection reset by peer