Extracting prog: 6m6.594633115s Minimizing prog: 1h19m23.207199984s Simplifying prog options: 0s Extracting C: 1m22.765173467s Simplifying C: 19m38.560542738s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 45s testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-open$dir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) open$dir(0x0, 0x804c0, 0x80) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) program did not crash single: failed to extract reproducer single: executing 1 programs separately with timeout 5m0s testing program (duration=5m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-open$dir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) open$dir(0x0, 0x804c0, 0x80) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: single: successfully extracted reproducer found reproducer with 8 syscalls minimizing guilty program testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-open$dir-close-openat$thread_pidfd detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) open$dir(0x0, 0x804c0, 0x80) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) program did not crash testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-open$dir-close-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) open$dir(0x0, 0x804c0, 0x80) close(r0) (async) fchdir(r1) program did not crash testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-open$dir-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) open$dir(0x0, 0x804c0, 0x80) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) program did not crash testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) program did not crash testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-fchdir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) fchdir(0xffffffffffffffff) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(0xffffffffffffffff) program did not crash testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) program did not crash testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: close(0xffffffffffffffff) r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r0) close(0xffffffffffffffff) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r0) program did not crash testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) close(r0) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) program did not crash testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, 0x0, 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) program did not crash testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, 0x0, 0x0, 0x0) fchdir(r1) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) program did not crash testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, 0x0, 0x0, 0x0) fchdir(r1) program did not crash extracting C reproducer testing compiled C program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: simplifying C reproducer testing compiled C program (duration=6m49.886740812s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir program did not crash testing compiled C program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir program did not crash testing compiled C program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: testing compiled C program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: testing compiled C program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: testing compiled C program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: testing compiled C program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: testing compiled C program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: testing compiled C program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: testing compiled C program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: validation run: crashed=true testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: validation run: crashed=true testing program (duration=6m49.886740812s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$thread_pidfd-close-openat$thread_pidfd-fchdir-close-openat$thread_pidfd-fchdir detailed listing: executing program 0: r0 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000040), 0x44000, 0x0) close(r0) r1 = openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) close(r0) (async) openat$thread_pidfd(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0) fchdir(r1) program crashed: panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: validation run: crashed=true reproducing took 2h0m6.01219953s repro crashed as (corrupted=false): panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: goroutine 596 [running]: gvisor.dev/gvisor/pkg/sync/locking.(*ancestorsAtomicPtrMap).RangeRepeatable(0xc00051e020, 0xc0015d9180) bazel-out/aarch64-fastbuild/bin/pkg/sync/locking/atomicptrmap_ancestors_unsafe.go:440 +0x29c gvisor.dev/gvisor/pkg/sync/locking.checkLock(0xc000316cf0, 0xc00051e000, {0x0, 0x0, 0x0}) pkg/sync/locking/lockdep.go:112 +0x3a0 gvisor.dev/gvisor/pkg/sync/locking.AddGLock(0xc000316cf0, 0xffffffffffffffff) pkg/sync/locking/lockdep.go:144 +0x2fc gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc001576dd0) bazel-out/aarch64-fastbuild/bin/pkg/sentry/fsimpl/kernfs/filesystem_mutex.go:31 +0x50 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).DecRef(0xc000b37950, {0x1d656f8, 0xc0006b7908}) pkg/sentry/fsimpl/kernfs/kernfs.go:303 +0xe8 gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).DecRef(0xc000b37950, {0x1d656f8, 0xc0006b7908}) pkg/sentry/vfs/dentry.go:156 +0x6c gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc000c1e4d0?, 0xc000b37950?}, {0x1d656f8, 0xc0006b7908}) pkg/sentry/vfs/vfs.go:1114 +0x58 gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).SetWorkingDirectory(0xc0016a2240, {0x1d656f8, 0xc0006b7908}, {0xc000c1e4d0, 0xc000c2e900}) pkg/sentry/kernel/fs_context.go:144 +0x18c gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Fchdir(0xc0006b7908, 0x62?, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_file.go:361 +0x270 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0006b7908, 0x32, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x880 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0006b7908, 0x32, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x60 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0006b7908, 0x32, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0xa8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0006b7908) pkg/sentry/kernel/task_syscall.go:258 +0x45c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0006b7908?, 0xc0006b7908) pkg/sentry/kernel/task_run.go:269 +0x1814 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0006b7908, 0x4c) pkg/sentry/kernel/task_run.go:97 +0x2f8 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 626 pkg/sentry/kernel/task_start.go:416 +0x160 known lock chain: kernfs.filesystemRWMutex -> kernel.taskSetRWMutex -> kernel.fsContextMutex ====== kernfs.filesystemRWMutex -> kernel.taskSetRWMutex ===== goroutine 164 [running]: gvisor.dev/gvisor/pkg/sentry/kernel.(*taskSetRWMutex).RLock(0xc0004643c0) bazel-out/aarch64-fastbuild/bin/pkg/sentry/kernel/taskset_mutex.go:59 +0x50 gvisor.dev/gvisor/pkg/sentry/kernel.(*PIDNamespace).IDOfThreadGroup(0xc0003e3180, 0xc0003dd808) pkg/sentry/kernel/threads.go:328 +0x54 gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*selfSymlink).Readlink(0xc0007fe460, {0x1d656f8, 0xc000672008}, 0xb5492c?) pkg/sentry/fsimpl/proc/tasks_files.go:62 +0xa4 gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*selfSymlink).Getlink(0xc0007fe460, {0x1d656f8, 0xc000672008}, 0xc00088e630) pkg/sentry/fsimpl/proc/tasks_files.go:70 +0x54 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).stepExistingLocked(0xc0001cc6c0, {0x1d656f8, 0xc000672008}, 0xc0005da488, 0xc00051fb00) pkg/sentry/fsimpl/kernfs/filesystem.go:83 +0x49c gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).walkExistingLocked(0xc0001cc6c0, {0x1d656f8, 0xc000672008}, 0xc0005da488) pkg/sentry/fsimpl/kernfs/filesystem.go:197 +0xe8 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).ReadlinkAt(0xc0001cc6c0, {0x1d656f8, 0xc000672008}, 0xc0005da488) pkg/sentry/fsimpl/kernfs/filesystem.go:697 +0xd4 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).ReadlinkAt(0xc00021e600, {0x1d656f8, 0xc000672008}, 0xc0000f63c0, 0xc000a0d5a0) pkg/sentry/vfs/vfs.go:512 +0xe0 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.readlinkat(0xc000672008, 0xffffff9c, 0x4000118070, 0x400012ad00, 0x80) pkg/sentry/syscalls/linux/sys_file.go:1096 +0x1f0 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Readlinkat(0xc000672008, 0x4ae824?, {{0xffffffffffffff9c}, {0x4000118070}, {0x400012ad00}, {0x80}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_file.go:1067 +0xac gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000672008, 0x4e, {{0xffffffffffffff9c}, {0x4000118070}, {0x400012ad00}, {0x80}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x880 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000672008, 0x4e, {{0xffffffffffffff9c}, {0x4000118070}, {0x400012ad00}, {0x80}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x60 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000672008, 0x4e, {{0xffffffffffffff9c}, {0x4000118070}, {0x400012ad00}, {0x80}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0xa8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000672008) pkg/sentry/kernel/task_syscall.go:258 +0x45c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000672008?, 0xc000672008) pkg/sentry/kernel/task_run.go:269 +0x1814 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000672008, 0x1) pkg/sentry/kernel/task_run.go:97 +0x2f8 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 1 pkg/sentry/kernel/task_start.go:416 +0x160 ====== kernel.taskSetRWMutex -> kernel.fsContextMutex ===== goroutine 176 [running]: gvisor.dev/gvisor/pkg/sentry/kernel.(*fsContextMutex).Lock(0xc000626548) bazel-out/aarch64-fastbuild/bin/pkg/sentry/kernel/fs_context_mutex.go:33 +0x50 gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).checkAndPreventSharingOutsideTG(0xc000626540, 0xc000236c08) pkg/sentry/kernel/fs_context.go:209 +0xf0 gvisor.dev/gvisor/pkg/sentry/kernel.(*runExecveAfterExecveCredsLock).execute(0xc0007129c0, 0xc0009fc008) pkg/sentry/kernel/task_exec.go:156 +0x298 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0009fc008, 0xf) pkg/sentry/kernel/task_run.go:97 +0x2f8 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 59 pkg/sentry/kernel/task_start.go:416 +0x160 final repro crashed as (corrupted=false): panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex: goroutine 596 [running]: gvisor.dev/gvisor/pkg/sync/locking.(*ancestorsAtomicPtrMap).RangeRepeatable(0xc00051e020, 0xc0015d9180) bazel-out/aarch64-fastbuild/bin/pkg/sync/locking/atomicptrmap_ancestors_unsafe.go:440 +0x29c gvisor.dev/gvisor/pkg/sync/locking.checkLock(0xc000316cf0, 0xc00051e000, {0x0, 0x0, 0x0}) pkg/sync/locking/lockdep.go:112 +0x3a0 gvisor.dev/gvisor/pkg/sync/locking.AddGLock(0xc000316cf0, 0xffffffffffffffff) pkg/sync/locking/lockdep.go:144 +0x2fc gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc001576dd0) bazel-out/aarch64-fastbuild/bin/pkg/sentry/fsimpl/kernfs/filesystem_mutex.go:31 +0x50 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).DecRef(0xc000b37950, {0x1d656f8, 0xc0006b7908}) pkg/sentry/fsimpl/kernfs/kernfs.go:303 +0xe8 gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).DecRef(0xc000b37950, {0x1d656f8, 0xc0006b7908}) pkg/sentry/vfs/dentry.go:156 +0x6c gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc000c1e4d0?, 0xc000b37950?}, {0x1d656f8, 0xc0006b7908}) pkg/sentry/vfs/vfs.go:1114 +0x58 gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).SetWorkingDirectory(0xc0016a2240, {0x1d656f8, 0xc0006b7908}, {0xc000c1e4d0, 0xc000c2e900}) pkg/sentry/kernel/fs_context.go:144 +0x18c gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Fchdir(0xc0006b7908, 0x62?, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_file.go:361 +0x270 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0006b7908, 0x32, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x880 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0006b7908, 0x32, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x60 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0006b7908, 0x32, {{0x3}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0xa8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0006b7908) pkg/sentry/kernel/task_syscall.go:258 +0x45c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0006b7908?, 0xc0006b7908) pkg/sentry/kernel/task_run.go:269 +0x1814 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0006b7908, 0x4c) pkg/sentry/kernel/task_run.go:97 +0x2f8 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 626 pkg/sentry/kernel/task_start.go:416 +0x160 known lock chain: kernfs.filesystemRWMutex -> kernel.taskSetRWMutex -> kernel.fsContextMutex ====== kernfs.filesystemRWMutex -> kernel.taskSetRWMutex ===== goroutine 164 [running]: gvisor.dev/gvisor/pkg/sentry/kernel.(*taskSetRWMutex).RLock(0xc0004643c0) bazel-out/aarch64-fastbuild/bin/pkg/sentry/kernel/taskset_mutex.go:59 +0x50 gvisor.dev/gvisor/pkg/sentry/kernel.(*PIDNamespace).IDOfThreadGroup(0xc0003e3180, 0xc0003dd808) pkg/sentry/kernel/threads.go:328 +0x54 gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*selfSymlink).Readlink(0xc0007fe460, {0x1d656f8, 0xc000672008}, 0xb5492c?) pkg/sentry/fsimpl/proc/tasks_files.go:62 +0xa4 gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*selfSymlink).Getlink(0xc0007fe460, {0x1d656f8, 0xc000672008}, 0xc00088e630) pkg/sentry/fsimpl/proc/tasks_files.go:70 +0x54 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).stepExistingLocked(0xc0001cc6c0, {0x1d656f8, 0xc000672008}, 0xc0005da488, 0xc00051fb00) pkg/sentry/fsimpl/kernfs/filesystem.go:83 +0x49c gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).walkExistingLocked(0xc0001cc6c0, {0x1d656f8, 0xc000672008}, 0xc0005da488) pkg/sentry/fsimpl/kernfs/filesystem.go:197 +0xe8 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).ReadlinkAt(0xc0001cc6c0, {0x1d656f8, 0xc000672008}, 0xc0005da488) pkg/sentry/fsimpl/kernfs/filesystem.go:697 +0xd4 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).ReadlinkAt(0xc00021e600, {0x1d656f8, 0xc000672008}, 0xc0000f63c0, 0xc000a0d5a0) pkg/sentry/vfs/vfs.go:512 +0xe0 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.readlinkat(0xc000672008, 0xffffff9c, 0x4000118070, 0x400012ad00, 0x80) pkg/sentry/syscalls/linux/sys_file.go:1096 +0x1f0 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Readlinkat(0xc000672008, 0x4ae824?, {{0xffffffffffffff9c}, {0x4000118070}, {0x400012ad00}, {0x80}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_file.go:1067 +0xac gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000672008, 0x4e, {{0xffffffffffffff9c}, {0x4000118070}, {0x400012ad00}, {0x80}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x880 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000672008, 0x4e, {{0xffffffffffffff9c}, {0x4000118070}, {0x400012ad00}, {0x80}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x60 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000672008, 0x4e, {{0xffffffffffffff9c}, {0x4000118070}, {0x400012ad00}, {0x80}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0xa8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000672008) pkg/sentry/kernel/task_syscall.go:258 +0x45c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000672008?, 0xc000672008) pkg/sentry/kernel/task_run.go:269 +0x1814 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000672008, 0x1) pkg/sentry/kernel/task_run.go:97 +0x2f8 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 1 pkg/sentry/kernel/task_start.go:416 +0x160 ====== kernel.taskSetRWMutex -> kernel.fsContextMutex ===== goroutine 176 [running]: gvisor.dev/gvisor/pkg/sentry/kernel.(*fsContextMutex).Lock(0xc000626548) bazel-out/aarch64-fastbuild/bin/pkg/sentry/kernel/fs_context_mutex.go:33 +0x50 gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).checkAndPreventSharingOutsideTG(0xc000626540, 0xc000236c08) pkg/sentry/kernel/fs_context.go:209 +0xf0 gvisor.dev/gvisor/pkg/sentry/kernel.(*runExecveAfterExecveCredsLock).execute(0xc0007129c0, 0xc0009fc008) pkg/sentry/kernel/task_exec.go:156 +0x298 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0009fc008, 0xf) pkg/sentry/kernel/task_run.go:97 +0x2f8 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 59 pkg/sentry/kernel/task_start.go:416 +0x160