Extracting prog: 5m7.061019369s Minimizing prog: 59m35.879288811s Simplifying prog options: 0s Extracting C: 3m8.443799148s Simplifying C: 21m28.905172766s 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: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}}): socketpair-bpf$PROG_LOAD-sendmsg$unix-bpf$BPF_MAP_CONST_STR_FREEZE-mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, 0x0) bpf$PROG_LOAD(0x5, 0x0, 0x0) sendmsg$unix(0xffffffffffffffff, 0x0, 0x0) bpf$BPF_MAP_CONST_STR_FREEZE(0x16, 0x0, 0x0) mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) (async) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) 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: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: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}}): socketpair-bpf$PROG_LOAD-sendmsg$unix-bpf$BPF_MAP_CONST_STR_FREEZE-mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, 0x0) bpf$PROG_LOAD(0x5, 0x0, 0x0) sendmsg$unix(0xffffffffffffffff, 0x0, 0x0) bpf$BPF_MAP_CONST_STR_FREEZE(0x16, 0x0, 0x0) mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) (async) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program crashed: INFO: task hung in perf_pending_task_sync single: successfully extracted reproducer found reproducer with 7 syscalls minimizing guilty program testing program (duration=6m0s, {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: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}}): socketpair-bpf$PROG_LOAD-sendmsg$unix-bpf$BPF_MAP_CONST_STR_FREEZE-mkdir-openat$cgroup_root detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, 0x0) bpf$PROG_LOAD(0x5, 0x0, 0x0) sendmsg$unix(0xffffffffffffffff, 0x0, 0x0) bpf$BPF_MAP_CONST_STR_FREEZE(0x16, 0x0, 0x0) mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) (async) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) program did not crash testing program (duration=6m0s, {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: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}}): socketpair-bpf$PROG_LOAD-sendmsg$unix-bpf$BPF_MAP_CONST_STR_FREEZE-mkdir-perf_event_open detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, 0x0) bpf$PROG_LOAD(0x5, 0x0, 0x0) sendmsg$unix(0xffffffffffffffff, 0x0, 0x0) bpf$BPF_MAP_CONST_STR_FREEZE(0x16, 0x0, 0x0) mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) (async) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program did not crash testing program (duration=6m0s, {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: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}}): socketpair-bpf$PROG_LOAD-sendmsg$unix-bpf$BPF_MAP_CONST_STR_FREEZE-openat$cgroup_root-perf_event_open detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, 0x0) bpf$PROG_LOAD(0x5, 0x0, 0x0) sendmsg$unix(0xffffffffffffffff, 0x0, 0x0) bpf$BPF_MAP_CONST_STR_FREEZE(0x16, 0x0, 0x0) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program did not crash testing program (duration=6m0s, {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: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}}): socketpair-bpf$PROG_LOAD-sendmsg$unix-mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, 0x0) bpf$PROG_LOAD(0x5, 0x0, 0x0) sendmsg$unix(0xffffffffffffffff, 0x0, 0x0) mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) (async) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program crashed: INFO: task hung in perf_pending_task_sync testing program (duration=6m0s, {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: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}}): socketpair-bpf$PROG_LOAD-mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, 0x0) bpf$PROG_LOAD(0x5, 0x0, 0x0) mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) (async) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program crashed: INFO: task hung in perf_pending_task_sync testing program (duration=6m0s, {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: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}}): socketpair-mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, 0x0) mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) (async) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program crashed: INFO: task hung in perf_pending_task_sync testing program (duration=6m0s, {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: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}}): mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) (async) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program crashed: INFO: task hung in perf_pending_task_sync testing program (duration=6m0s, {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: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}}): mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program did not crash testing program (duration=6m0s, {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: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}}): mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: mkdir(0x0, 0x0) (async) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program did not crash testing program (duration=6m0s, {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: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}}): mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program crashed: INFO: task hung in perf_pending_task_sync testing program (duration=6m0s, {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: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}}): mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) openat$cgroup_root(0xffffffffffffff9c, 0x0, 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program did not crash testing program (duration=6m0s, {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: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}}): mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {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: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}}): mkdir-openat$cgroup_root-perf_event_open program crashed: INFO: task hung in perf_pending_task_sync simplifying C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-openat$cgroup_root-perf_event_open program crashed: INFO: task hung in perf_pending_task_sync 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}}): mkdir-openat$cgroup_root-perf_event_open program crashed: INFO: task hung in perf_pending_task_sync testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-openat$cgroup_root-perf_event_open program crashed: INFO: task hung in perf_pending_task_sync testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 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}}): mkdir-openat$cgroup_root-perf_event_open program crashed: INFO: task hung in perf_pending_task_sync testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-openat$cgroup_root-perf_event_open program crashed: INFO: task hung in perf_pending_task_sync testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 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:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-openat$cgroup_root-perf_event_open program crashed: INFO: task hung in perf_pending_task_sync testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-openat$cgroup_root-perf_event_open program crashed: INFO: task hung in perf_pending_task_sync testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program crashed: INFO: task hung in perf_pending_task_sync validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program crashed: INFO: task hung in perf_pending_task_sync validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-openat$cgroup_root-perf_event_open detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./cgroup/../file0\x00', 0x0) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) (rerun: 64) perf_event_open(&(0x7f0000000000)={0x1, 0x80, 0x3, 0x0, 0x0, 0x0, 0x0, 0x20, 0x92506, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x4, @perf_config_ext={0x1, 0xffffffff}, 0x7402, 0x0, 0xf0, 0x4, 0xb, 0xffffffff, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x8) program crashed: INFO: task hung in perf_pending_task_sync validation run: crashed=true reproducing took 1h40m10.021629476s repro crashed as (corrupted=false): INFO: task syz.0.2650:7267 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.2650 state:D stack:27664 pid: 7267 ppid: 6989 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 perf_pending_task_sync+0x13c/0x1c0 kernel/events/core.c:5137 _free_event+0x34/0xe30 kernel/events/core.c:5143 put_event kernel/events/core.c:5268 [inline] perf_event_release_kernel+0x7c4/0x850 kernel/events/core.c:5393 perf_release+0x37/0x40 kernel/events/core.c:5403 __fput+0x212/0x8c0 fs/file_table.c:311 task_work_run+0x125/0x1a0 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x635/0x2100 kernel/exit.c:890 do_group_exit+0x12c/0x2f0 kernel/exit.c:1004 __do_sys_exit_group kernel/exit.c:1015 [inline] __se_sys_exit_group kernel/exit.c:1013 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1013 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f207575b4d9 RSP: 002b:00007fffb0eee138 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f207575b4d9 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fffb0eee19c R08: 0000000000000000 R09: 00000000000927c0 R10: 0000000000000001 R11: 0000000000000246 R12: 00000000000000e9 R13: 00000000000927c0 R14: 00000000000333de R15: 00007fffb0eee1f0 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by kworker/u4:2/155: #0: ffff8880b8f3a358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x130 kernel/sched/core.c:475 #1: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x9/0x30 include/linux/rcupdate.h:313 2 locks held by getty/3948: #0: ffff88802c8e7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc900026562e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x594/0x1a50 drivers/tty/n_tty.c:2158 1 lock held by syz.4.5954/11746: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xe1b/0xe60 kernel/hung_task.c:369 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 11185 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 RIP: 0010:mark_lock+0x10/0x320 kernel/locking/lockdep.c:4625 Code: 4c 89 f7 41 89 d9 e9 79 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 41 57 41 56 41 55 41 54 53 50 89 d5 49 89 f6 <48> 89 fb 49 bd 00 00 00 00 00 fc ff df 83 fa 08 75 29 4d 8d 7e 20 RSP: 0018:ffffc90003e1f2c0 EFLAGS: 00000006 RAX: 0000000000000000 RBX: ffff88801e153b80 RCX: ffffffff815db004 RDX: 0000000000000006 RSI: ffff88801e154670 RDI: ffff88801e153b80 RBP: 0000000000000006 R08: ffffffff91047157 R09: 1ffffffff2208e2a R10: dffffc0000000000 R11: fffffbfff2208e2b R12: ffff88801e154690 R13: 0000000000000000 R14: ffff88801e154670 R15: ffff88801e154670 FS: 0000555566b5f500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f105408b158 CR3: 0000000018fb0000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mark_held_locks kernel/locking/lockdep.c:4260 [inline] __trace_hardirqs_on_caller kernel/locking/lockdep.c:4286 [inline] lockdep_hardirqs_on_prepare+0x380/0x7c0 kernel/locking/lockdep.c:4345 trace_hardirqs_on+0x67/0x80 kernel/trace/trace_preemptirq.c:49 kasan_quarantine_put+0xd4/0x210 mm/kasan/quarantine.c:231 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1710 [inline] slab_free_freelist_hook+0xec/0x170 mm/slub.c:1736 slab_free mm/slub.c:3504 [inline] kfree+0xef/0x2a0 mm/slub.c:4564 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:887 [inline] get_entries net/ipv6/netfilter/ip6_tables.c:1044 [inline] do_ip6t_get_ctl+0xe4b/0x1130 net/ipv6/netfilter/ip6_tables.c:1681 nf_getsockopt+0x25e/0x280 net/netfilter/nf_sockopt.c:116 ipv6_getsockopt+0x43f/0x2390 net/ipv6/ipv6_sockglue.c:1492 tcp_getsockopt+0x209/0x25e0 net/ipv4/tcp.c:4325 __sys_getsockopt+0x1b0/0x230 net/socket.c:2257 __do_sys_getsockopt net/socket.c:2272 [inline] __se_sys_getsockopt net/socket.c:2269 [inline] __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2269 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1053e3ecca Code: 48 83 ec 10 89 d2 48 63 ff 45 31 c9 6a 2a 45 31 c0 31 c9 e8 b8 99 fb ff 48 83 c4 18 c3 0f 1f 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 e8 ff ff ff f7 RSP: 002b:00007fffbe507f88 EFLAGS: 00000212 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007fffbe508010 RCX: 00007f1053e3ecca RDX: 0000000000000041 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007fffbe507fac R09: 0000000000000000 R10: 00007fffbe508010 R11: 0000000000000212 R12: 00007f105408cb80 R13: 00007fffbe507fac R14: 0000000000000000 R15: 00007f105408dfc0 final repro crashed as (corrupted=false): INFO: task syz.0.2650:7267 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.2650 state:D stack:27664 pid: 7267 ppid: 6989 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 perf_pending_task_sync+0x13c/0x1c0 kernel/events/core.c:5137 _free_event+0x34/0xe30 kernel/events/core.c:5143 put_event kernel/events/core.c:5268 [inline] perf_event_release_kernel+0x7c4/0x850 kernel/events/core.c:5393 perf_release+0x37/0x40 kernel/events/core.c:5403 __fput+0x212/0x8c0 fs/file_table.c:311 task_work_run+0x125/0x1a0 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x635/0x2100 kernel/exit.c:890 do_group_exit+0x12c/0x2f0 kernel/exit.c:1004 __do_sys_exit_group kernel/exit.c:1015 [inline] __se_sys_exit_group kernel/exit.c:1013 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1013 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f207575b4d9 RSP: 002b:00007fffb0eee138 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f207575b4d9 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fffb0eee19c R08: 0000000000000000 R09: 00000000000927c0 R10: 0000000000000001 R11: 0000000000000246 R12: 00000000000000e9 R13: 00000000000927c0 R14: 00000000000333de R15: 00007fffb0eee1f0 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by kworker/u4:2/155: #0: ffff8880b8f3a358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x130 kernel/sched/core.c:475 #1: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x9/0x30 include/linux/rcupdate.h:313 2 locks held by getty/3948: #0: ffff88802c8e7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc900026562e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x594/0x1a50 drivers/tty/n_tty.c:2158 1 lock held by syz.4.5954/11746: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xe1b/0xe60 kernel/hung_task.c:369 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 11185 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 RIP: 0010:mark_lock+0x10/0x320 kernel/locking/lockdep.c:4625 Code: 4c 89 f7 41 89 d9 e9 79 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 41 57 41 56 41 55 41 54 53 50 89 d5 49 89 f6 <48> 89 fb 49 bd 00 00 00 00 00 fc ff df 83 fa 08 75 29 4d 8d 7e 20 RSP: 0018:ffffc90003e1f2c0 EFLAGS: 00000006 RAX: 0000000000000000 RBX: ffff88801e153b80 RCX: ffffffff815db004 RDX: 0000000000000006 RSI: ffff88801e154670 RDI: ffff88801e153b80 RBP: 0000000000000006 R08: ffffffff91047157 R09: 1ffffffff2208e2a R10: dffffc0000000000 R11: fffffbfff2208e2b R12: ffff88801e154690 R13: 0000000000000000 R14: ffff88801e154670 R15: ffff88801e154670 FS: 0000555566b5f500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f105408b158 CR3: 0000000018fb0000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mark_held_locks kernel/locking/lockdep.c:4260 [inline] __trace_hardirqs_on_caller kernel/locking/lockdep.c:4286 [inline] lockdep_hardirqs_on_prepare+0x380/0x7c0 kernel/locking/lockdep.c:4345 trace_hardirqs_on+0x67/0x80 kernel/trace/trace_preemptirq.c:49 kasan_quarantine_put+0xd4/0x210 mm/kasan/quarantine.c:231 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1710 [inline] slab_free_freelist_hook+0xec/0x170 mm/slub.c:1736 slab_free mm/slub.c:3504 [inline] kfree+0xef/0x2a0 mm/slub.c:4564 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:887 [inline] get_entries net/ipv6/netfilter/ip6_tables.c:1044 [inline] do_ip6t_get_ctl+0xe4b/0x1130 net/ipv6/netfilter/ip6_tables.c:1681 nf_getsockopt+0x25e/0x280 net/netfilter/nf_sockopt.c:116 ipv6_getsockopt+0x43f/0x2390 net/ipv6/ipv6_sockglue.c:1492 tcp_getsockopt+0x209/0x25e0 net/ipv4/tcp.c:4325 __sys_getsockopt+0x1b0/0x230 net/socket.c:2257 __do_sys_getsockopt net/socket.c:2272 [inline] __se_sys_getsockopt net/socket.c:2269 [inline] __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2269 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1053e3ecca Code: 48 83 ec 10 89 d2 48 63 ff 45 31 c9 6a 2a 45 31 c0 31 c9 e8 b8 99 fb ff 48 83 c4 18 c3 0f 1f 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 e8 ff ff ff f7 RSP: 002b:00007fffbe507f88 EFLAGS: 00000212 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007fffbe508010 RCX: 00007f1053e3ecca RDX: 0000000000000041 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007fffbe507fac R09: 0000000000000000 R10: 00007fffbe508010 R11: 0000000000000212 R12: 00007f105408cb80 R13: 00007fffbe507fac R14: 0000000000000000 R15: 00007f105408dfc0