Extracting prog: 4m20.835561491s
Minimizing prog: 40m12.752880268s
Simplifying prog options: 0s
Extracting C: 3m36.835106189s
Simplifying C: 27m37.450172608s


extracting reproducer from 42 programs
first checking the prog from the crash report
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}}): bpf$MAP_LOOKUP_ELEM-perf_event_open$cgroup-perf_event_open-openat$cgroup_int-socket$kcm-socket$kcm-sendmsg$kcm-sendmsg$kcm
detailed listing:
executing program 0:
bpf$MAP_LOOKUP_ELEM(0x1, &(0x7f0000000240)={0x1, &(0x7f00000000c0)="d540cde598fff96f90aa8f3124292b6a461c7ec07b7e3c6b6cc8a2a71e8045656b2bd83eab71fa33bd8b15f1db60321fa79f0be488f5e480e717db3e67b32cdb6441578b30aad6bcf50189eafac326524930d6c061d9587c1f04027bdb3c5d2de08e4c77d8d090c2494a720a193e470c61884de97e11c08cba8375487e18c1f021be3ead3708e79cb823912fd35b48e87bb6437f66eefd9ff375b3f180ee3c71ab9e3821f75555193bf5e753f2bdeb9d8bb93251101773d707c67092d4a7cb3242ebd32b1d7bb3afbbcf04cd370b", &(0x7f00000001c0)=""/111, 0x4}, 0x20) (async, rerun: 32)
perf_event_open$cgroup(&(0x7f00000003c0)={0x2, 0x80, 0x16, 0x1, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, @perf_config_ext={0x7}, 0x0, 0x800, 0x0, 0x0, 0x2, 0x7, 0xffff, 0x0, 0x0, 0x0, 0xe000000000000000}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (rerun: 32)
perf_event_open(&(0x7f0000000680)={0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x5a1c, 0x11003, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, @perf_bp={0x0}, 0x20, 0x400000, 0xb9, 0x0, 0x0, 0x11}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xa) (async)
openat$cgroup_int(0xffffffffffffffff, &(0x7f00000002c0)='hugetlb.2MB.rsvd.failcnt\x00', 0x2, 0x0) (async)
r0 = socket$kcm(0x10, 0x3, 0x10) (async)
r1 = socket$kcm(0x10, 0x2, 0x10)
sendmsg$kcm(r1, &(0x7f0000000000)={0x0, 0xffffff2d, &(0x7f0000000080)=[{&(0x7f0000000040)="2008020022003507d25a806f8c6394f90524fc600d001141090005000400000037153e370248038011f01700d1bd", 0x33fe0}], 0x1}, 0x0) (async, rerun: 32)
sendmsg$kcm(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000280)=[{&(0x7f0000000040)="1400000037000b0fd25a806c8c6f94f90d24fc60", 0x14}], 0x1, 0x0, 0x0, 0x20000000}, 0x200000c0) (rerun: 32)

program crashed: INFO: rcu detected stall in corrupted
single: successfully extracted reproducer
found reproducer with 8 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}}): bpf$MAP_LOOKUP_ELEM-perf_event_open$cgroup-perf_event_open-openat$cgroup_int-socket$kcm-socket$kcm-sendmsg$kcm
detailed listing:
executing program 0:
bpf$MAP_LOOKUP_ELEM(0x1, &(0x7f0000000240)={0x1, &(0x7f00000000c0)="d540cde598fff96f90aa8f3124292b6a461c7ec07b7e3c6b6cc8a2a71e8045656b2bd83eab71fa33bd8b15f1db60321fa79f0be488f5e480e717db3e67b32cdb6441578b30aad6bcf50189eafac326524930d6c061d9587c1f04027bdb3c5d2de08e4c77d8d090c2494a720a193e470c61884de97e11c08cba8375487e18c1f021be3ead3708e79cb823912fd35b48e87bb6437f66eefd9ff375b3f180ee3c71ab9e3821f75555193bf5e753f2bdeb9d8bb93251101773d707c67092d4a7cb3242ebd32b1d7bb3afbbcf04cd370b", &(0x7f00000001c0)=""/111, 0x4}, 0x20) (async, rerun: 32)
perf_event_open$cgroup(&(0x7f00000003c0)={0x2, 0x80, 0x16, 0x1, 0x0, 0x0, 0x0, 0x5, 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, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, @perf_config_ext={0x7}, 0x0, 0x800, 0x0, 0x0, 0x2, 0x7, 0xffff, 0x0, 0x0, 0x0, 0xe000000000000000}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (rerun: 32)
perf_event_open(&(0x7f0000000680)={0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x5a1c, 0x11003, 0x2, 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, 0x0, 0x0, 0x0, 0x0, 0x1, @perf_bp={0x0}, 0x20, 0x400000, 0xb9, 0x0, 0x0, 0x11}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xa) (async)
openat$cgroup_int(0xffffffffffffffff, &(0x7f00000002c0)='hugetlb.2MB.rsvd.failcnt\x00', 0x2, 0x0) (async)
socket$kcm(0x10, 0x3, 0x10) (async)
r0 = socket$kcm(0x10, 0x2, 0x10)
sendmsg$kcm(r0, &(0x7f0000000000)={0x0, 0xffffff2d, &(0x7f0000000080)=[{&(0x7f0000000040)="2008020022003507d25a806f8c6394f90524fc600d001141090005000400000037153e370248038011f01700d1bd", 0x33fe0}], 0x1}, 0x0) (async, rerun: 32)

program crashed: INFO: rcu detected stall in corrupted
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}}): bpf$MAP_LOOKUP_ELEM-perf_event_open$cgroup-perf_event_open-openat$cgroup_int-socket$kcm-socket$kcm
detailed listing:
executing program 0:
bpf$MAP_LOOKUP_ELEM(0x1, &(0x7f0000000240)={0x1, &(0x7f00000000c0)="d540cde598fff96f90aa8f3124292b6a461c7ec07b7e3c6b6cc8a2a71e8045656b2bd83eab71fa33bd8b15f1db60321fa79f0be488f5e480e717db3e67b32cdb6441578b30aad6bcf50189eafac326524930d6c061d9587c1f04027bdb3c5d2de08e4c77d8d090c2494a720a193e470c61884de97e11c08cba8375487e18c1f021be3ead3708e79cb823912fd35b48e87bb6437f66eefd9ff375b3f180ee3c71ab9e3821f75555193bf5e753f2bdeb9d8bb93251101773d707c67092d4a7cb3242ebd32b1d7bb3afbbcf04cd370b", &(0x7f00000001c0)=""/111, 0x4}, 0x20) (async, rerun: 32)
perf_event_open$cgroup(&(0x7f00000003c0)={0x2, 0x80, 0x16, 0x1, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, @perf_config_ext={0x7}, 0x0, 0x800, 0x0, 0x0, 0x2, 0x7, 0xffff, 0x0, 0x0, 0x0, 0xe000000000000000}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (rerun: 32)
perf_event_open(&(0x7f0000000680)={0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x5a1c, 0x11003, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, @perf_bp={0x0}, 0x20, 0x400000, 0xb9, 0x0, 0x0, 0x11}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xa) (async)
openat$cgroup_int(0xffffffffffffffff, &(0x7f00000002c0)='hugetlb.2MB.rsvd.failcnt\x00', 0x2, 0x0) (async)
socket$kcm(0x10, 0x3, 0x10) (async)
socket$kcm(0x10, 0x2, 0x10)

program crashed: INFO: rcu detected stall in smp_call_function
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}}): bpf$MAP_LOOKUP_ELEM-perf_event_open$cgroup-perf_event_open-openat$cgroup_int-socket$kcm
detailed listing:
executing program 0:
bpf$MAP_LOOKUP_ELEM(0x1, &(0x7f0000000240)={0x1, &(0x7f00000000c0)="d540cde598fff96f90aa8f3124292b6a461c7ec07b7e3c6b6cc8a2a71e8045656b2bd83eab71fa33bd8b15f1db60321fa79f0be488f5e480e717db3e67b32cdb6441578b30aad6bcf50189eafac326524930d6c061d9587c1f04027bdb3c5d2de08e4c77d8d090c2494a720a193e470c61884de97e11c08cba8375487e18c1f021be3ead3708e79cb823912fd35b48e87bb6437f66eefd9ff375b3f180ee3c71ab9e3821f75555193bf5e753f2bdeb9d8bb93251101773d707c67092d4a7cb3242ebd32b1d7bb3afbbcf04cd370b", &(0x7f00000001c0)=""/111, 0x4}, 0x20) (async, rerun: 32)
perf_event_open$cgroup(&(0x7f00000003c0)={0x2, 0x80, 0x16, 0x1, 0x0, 0x0, 0x0, 0x5, 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, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, @perf_config_ext={0x7}, 0x0, 0x800, 0x0, 0x0, 0x2, 0x7, 0xffff, 0x0, 0x0, 0x0, 0xe000000000000000}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (rerun: 32)
perf_event_open(&(0x7f0000000680)={0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x5a1c, 0x11003, 0x2, 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, 0x0, 0x0, 0x0, 0x0, 0x1, @perf_bp={0x0}, 0x20, 0x400000, 0xb9, 0x0, 0x0, 0x11}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xa) (async)
openat$cgroup_int(0xffffffffffffffff, &(0x7f00000002c0)='hugetlb.2MB.rsvd.failcnt\x00', 0x2, 0x0) (async)
socket$kcm(0x10, 0x3, 0x10) (async)

program crashed: INFO: rcu detected stall in perf_event_open
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}}): bpf$MAP_LOOKUP_ELEM-perf_event_open$cgroup-perf_event_open-openat$cgroup_int
detailed listing:
executing program 0:
bpf$MAP_LOOKUP_ELEM(0x1, &(0x7f0000000240)={0x1, &(0x7f00000000c0)="d540cde598fff96f90aa8f3124292b6a461c7ec07b7e3c6b6cc8a2a71e8045656b2bd83eab71fa33bd8b15f1db60321fa79f0be488f5e480e717db3e67b32cdb6441578b30aad6bcf50189eafac326524930d6c061d9587c1f04027bdb3c5d2de08e4c77d8d090c2494a720a193e470c61884de97e11c08cba8375487e18c1f021be3ead3708e79cb823912fd35b48e87bb6437f66eefd9ff375b3f180ee3c71ab9e3821f75555193bf5e753f2bdeb9d8bb93251101773d707c67092d4a7cb3242ebd32b1d7bb3afbbcf04cd370b", &(0x7f00000001c0)=""/111, 0x4}, 0x20) (async, rerun: 32)
perf_event_open$cgroup(&(0x7f00000003c0)={0x2, 0x80, 0x16, 0x1, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, @perf_config_ext={0x7}, 0x0, 0x800, 0x0, 0x0, 0x2, 0x7, 0xffff, 0x0, 0x0, 0x0, 0xe000000000000000}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (rerun: 32)
perf_event_open(&(0x7f0000000680)={0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x5a1c, 0x11003, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, @perf_bp={0x0}, 0x20, 0x400000, 0xb9, 0x0, 0x0, 0x11}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xa) (async)
openat$cgroup_int(0xffffffffffffffff, &(0x7f00000002c0)='hugetlb.2MB.rsvd.failcnt\x00', 0x2, 0x0) (async)

program crashed: INFO: rcu detected stall in addrconf_rs_timer
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}}): bpf$MAP_LOOKUP_ELEM-perf_event_open$cgroup-perf_event_open
detailed listing:
executing program 0:
bpf$MAP_LOOKUP_ELEM(0x1, &(0x7f0000000240)={0x1, &(0x7f00000000c0)="d540cde598fff96f90aa8f3124292b6a461c7ec07b7e3c6b6cc8a2a71e8045656b2bd83eab71fa33bd8b15f1db60321fa79f0be488f5e480e717db3e67b32cdb6441578b30aad6bcf50189eafac326524930d6c061d9587c1f04027bdb3c5d2de08e4c77d8d090c2494a720a193e470c61884de97e11c08cba8375487e18c1f021be3ead3708e79cb823912fd35b48e87bb6437f66eefd9ff375b3f180ee3c71ab9e3821f75555193bf5e753f2bdeb9d8bb93251101773d707c67092d4a7cb3242ebd32b1d7bb3afbbcf04cd370b", &(0x7f00000001c0)=""/111, 0x4}, 0x20) (async, rerun: 32)
perf_event_open$cgroup(&(0x7f00000003c0)={0x2, 0x80, 0x16, 0x1, 0x0, 0x0, 0x0, 0x5, 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, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, @perf_config_ext={0x7}, 0x0, 0x800, 0x0, 0x0, 0x2, 0x7, 0xffff, 0x0, 0x0, 0x0, 0xe000000000000000}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (rerun: 32)
perf_event_open(&(0x7f0000000680)={0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x5a1c, 0x11003, 0x2, 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, 0x0, 0x0, 0x0, 0x0, 0x1, @perf_bp={0x0}, 0x20, 0x400000, 0xb9, 0x0, 0x0, 0x11}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xa) (async)

program crashed: INFO: rcu detected stall in smp_call_function
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}}): bpf$MAP_LOOKUP_ELEM-perf_event_open$cgroup
detailed listing:
executing program 0:
bpf$MAP_LOOKUP_ELEM(0x1, &(0x7f0000000240)={0x1, &(0x7f00000000c0)="d540cde598fff96f90aa8f3124292b6a461c7ec07b7e3c6b6cc8a2a71e8045656b2bd83eab71fa33bd8b15f1db60321fa79f0be488f5e480e717db3e67b32cdb6441578b30aad6bcf50189eafac326524930d6c061d9587c1f04027bdb3c5d2de08e4c77d8d090c2494a720a193e470c61884de97e11c08cba8375487e18c1f021be3ead3708e79cb823912fd35b48e87bb6437f66eefd9ff375b3f180ee3c71ab9e3821f75555193bf5e753f2bdeb9d8bb93251101773d707c67092d4a7cb3242ebd32b1d7bb3afbbcf04cd370b", &(0x7f00000001c0)=""/111, 0x4}, 0x20) (async, rerun: 32)
perf_event_open$cgroup(&(0x7f00000003c0)={0x2, 0x80, 0x16, 0x1, 0x0, 0x0, 0x0, 0x5, 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, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, @perf_config_ext={0x7}, 0x0, 0x800, 0x0, 0x0, 0x2, 0x7, 0xffff, 0x0, 0x0, 0x0, 0xe000000000000000}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (rerun: 32)

program crashed: INFO: rcu detected stall in perf_release
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}}): bpf$MAP_LOOKUP_ELEM
detailed listing:
executing program 0:
bpf$MAP_LOOKUP_ELEM(0x1, &(0x7f0000000240)={0x1, &(0x7f00000000c0)="d540cde598fff96f90aa8f3124292b6a461c7ec07b7e3c6b6cc8a2a71e8045656b2bd83eab71fa33bd8b15f1db60321fa79f0be488f5e480e717db3e67b32cdb6441578b30aad6bcf50189eafac326524930d6c061d9587c1f04027bdb3c5d2de08e4c77d8d090c2494a720a193e470c61884de97e11c08cba8375487e18c1f021be3ead3708e79cb823912fd35b48e87bb6437f66eefd9ff375b3f180ee3c71ab9e3821f75555193bf5e753f2bdeb9d8bb93251101773d707c67092d4a7cb3242ebd32b1d7bb3afbbcf04cd370b", &(0x7f00000001c0)=""/111, 0x4}, 0x20) (async, rerun: 32)

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}}): perf_event_open$cgroup
detailed listing:
executing program 0:
perf_event_open$cgroup(&(0x7f00000003c0)={0x2, 0x80, 0x16, 0x1, 0x0, 0x0, 0x0, 0x5, 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, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, @perf_config_ext={0x7}, 0x0, 0x800, 0x0, 0x0, 0x2, 0x7, 0xffff, 0x0, 0x0, 0x0, 0xe000000000000000}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (rerun: 32)

program crashed: INFO: rcu detected stall in corrupted
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}}): perf_event_open$cgroup
detailed listing:
executing program 0:
perf_event_open$cgroup(&(0x7f00000003c0)={0x2, 0x80, 0x16, 0x1, 0x0, 0x0, 0x0, 0x5, 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, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, @perf_config_ext={0x7}, 0x0, 0x800, 0x0, 0x0, 0x2, 0x7, 0xffff, 0x0, 0x0, 0x0, 0xe000000000000000}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0)

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}}): perf_event_open$cgroup
detailed listing:
executing program 0:
perf_event_open$cgroup(0x0, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (rerun: 32)

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}}): perf_event_open$cgroup
program crashed: INFO: rcu detected stall in corrupted
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): perf_event_open$cgroup
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {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: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}}): perf_event_open$cgroup
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): perf_event_open$cgroup
program crashed: INFO: rcu detected stall in corrupted
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): perf_event_open$cgroup
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): perf_event_open$cgroup
program crashed: INFO: rcu detected stall in corrupted
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): perf_event_open$cgroup
program crashed: INFO: rcu detected stall in corrupted
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): perf_event_open$cgroup
program crashed: INFO: rcu detected stall in corrupted
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): perf_event_open$cgroup
detailed listing:
executing program 0:
perf_event_open$cgroup(&(0x7f00000003c0)={0x2, 0x80, 0x16, 0x1, 0x0, 0x0, 0x0, 0x5, 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, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, @perf_config_ext={0x7}, 0x0, 0x800, 0x0, 0x0, 0x2, 0x7, 0xffff, 0x0, 0x0, 0x0, 0xe000000000000000}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (rerun: 32)

program crashed: INFO: rcu detected stall in corrupted
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): perf_event_open$cgroup
detailed listing:
executing program 0:
perf_event_open$cgroup(&(0x7f00000003c0)={0x2, 0x80, 0x16, 0x1, 0x0, 0x0, 0x0, 0x5, 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, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, @perf_config_ext={0x7}, 0x0, 0x800, 0x0, 0x0, 0x2, 0x7, 0xffff, 0x0, 0x0, 0x0, 0xe000000000000000}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (rerun: 32)

program crashed: INFO: rcu detected stall in perf_event_open
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): perf_event_open$cgroup
detailed listing:
executing program 0:
perf_event_open$cgroup(&(0x7f00000003c0)={0x2, 0x80, 0x16, 0x1, 0x0, 0x0, 0x0, 0x5, 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, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, @perf_config_ext={0x7}, 0x0, 0x800, 0x0, 0x0, 0x2, 0x7, 0xffff, 0x0, 0x0, 0x0, 0xe000000000000000}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) (rerun: 32)

program crashed: INFO: rcu detected stall in corrupted
validation run: crashed=true
reproducing took 1h25m34.409422567s
repro crashed as (corrupted=true):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (0 ticks this GP) idle=805/1/0x4000000000000002 softirq=7141/7141 fqs=0 
	(detected by 1, t=10502 jiffies, g=7717, q=707)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4467 Comm: syz.4.69 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:rdtsc_ordered arch/x86/include/asm/msr.h:224 [inline]
RIP: 0010:pvclock_clocksource_read+0xe3/0x770 arch/x86/kernel/pvclock.c:76
Code: 00 00 fc ff df 48 89 54 24 38 42 0f b6 04 22 84 c0 0f 85 39 01 00 00 42 0f b6 04 23 84 c0 0f 85 72 01 00 00 44 8b 37 0f 01 f9 <66> 90 49 89 d5 48 8b 8c 24 90 00 00 00 42 0f b6 0c 21 84 c9 0f 85
RSP: 0018:ffffc90000007dd0 EFLAGS: 00000046
RAX: 0000000060335e5a RBX: 1ffffffff1e20600 RCX: 0000000000000000
RDX: 000000000000006f RSI: ffffffff8f10301c RDI: ffffffff8f103000
RBP: 0000000000000000 R08: ffffffff8f103008 R09: ffffffff8f103018
R10: ffffffff8f103010 R11: ffffffff8f103003 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000006 R15: ffffffff8be3d820
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32263fff CR3: 000000000c08e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 kvm_clock_read arch/x86/kernel/kvmclock.c:79 [inline]
 kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:91
 sched_clock_cpu+0x15/0x3c0 kernel/sched/clock.c:371
 irqtime_account_irq+0x6a/0x1b0 kernel/sched/cputime.c:61
 account_hardirq_exit include/linux/vtime.h:159 [inline]
 __irq_exit_rcu+0x99/0x230 kernel/softirq.c:656
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x9d/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 02 20 9d 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc9000401f3e0 EFLAGS: 00000206
RAX: 71ac106acc696c00 RBX: 1ffff92000803e80 RCX: 71ac106acc696c00
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4200
RBP: ffffc9000401f4b0 R08: ffffffff901ee0c7 R09: 1ffffffff203dc18
R10: dffffc0000000000 R11: fffffbfff203dc19 R12: ffffffff8c323400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 __unlock_page_memcg+0xea/0x100 mm/memcontrol.c:2093
 zap_pte_range mm/memory.c:1384 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0xee4/0x2410 mm/memory.c:1576
 unmap_vmas+0x131/0x250 mm/memory.c:1653
 exit_mmap+0x3b9/0x640 mm/mmap.c:3216
 __mmput+0x115/0x390 kernel/fork.c:1128
 exit_mm+0x632/0x7b0 kernel/exit.c:557
 do_exit+0x5b8/0x2110 kernel/exit.c:877
 do_group_exit+0x12c/0x2f0 kernel/exit.c:1004
 get_signal+0x7eb/0x12e0 kernel/signal.c:2909
 arch_do_signal_or_restart+0xe6/0x12a0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9c4e74c019
Code: Unable to access opcode bytes at RIP 0x7f9c4e74bfef.
RSP: 002b:00007f9c4ddac0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f9c4e9d3fa8 RCX: 00007f9c4e74c019
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f9c4e9d3fa8
RBP: 00007f9c4e9d3fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9c4e9d4038 R14: 00007fff08ed51f0 R15: 00007fff08ed52d8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g7717 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=5648
rcu: rcu_preempt kthread starved for 10502 jiffies! g7717 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:27920 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11c3/0x4350 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2117
 rcu_gp_fqs_loop+0x2be/0x11f0 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0x9a/0x370 kernel/rcu/tree.c:2145
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4467 Comm: syz.4.69 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:mark_lock+0x5/0x320 kernel/locking/lockdep.c:4552
Code: c7 c7 88 41 8b 8d e8 0a 8e 60 00 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
RSP: 0018:ffffc9000401e9a0 EFLAGS: 00000046
RAX: 0000000000000002 RBX: 0000000000000002 RCX: 0000000000000002
RDX: 0000000000000008 RSI: ffff888079910b40 RDI: ffff888079910000
RBP: ffffc9000401ebf0 R08: dffffc0000000000 R09: 1ffffffff203dc18
R10: dffffc0000000000 R11: fffffbfff203dc19 R12: ffff888079910b60
R13: ffff888079910000 R14: 0000000000000002 R15: ffff888079910b40
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32263fff CR3: 000000000c08e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 mark_usage kernel/locking/lockdep.c:4512 [inline]
 __lock_acquire+0xd7b/0x7b50 kernel/locking/lockdep.c:4966
 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
 rcu_read_lock include/linux/rcupdate.h:740 [inline]
 __perf_event_output kernel/events/core.c:7800 [inline]
 perf_event_output_forward+0xbc/0x2e0 kernel/events/core.c:7822
 __perf_event_overflow+0x35f/0x550 kernel/events/core.c:9515
 perf_swevent_overflow kernel/events/core.c:9591 [inline]
 perf_swevent_event+0x4b8/0x540 kernel/events/core.c:9629
 perf_tp_event+0x324/0xbe0 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 02 20 9d 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc9000401f3e0 EFLAGS: 00000206
RAX: 71ac106acc696c00 RBX: 1ffff92000803e80 RCX: 71ac106acc696c00
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4200
RBP: ffffc9000401f4b0 R08: ffffffff901ee0c7 R09: 1ffffffff203dc18
R10: dffffc0000000000 R11: fffffbfff203dc19 R12: ffffffff8c323400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 __unlock_page_memcg+0xea/0x100 mm/memcontrol.c:2093
 zap_pte_range mm/memory.c:1384 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0xee4/0x2410 mm/memory.c:1576
 unmap_vmas+0x131/0x250 mm/memory.c:1653
 exit_mmap+0x3b9/0x640 mm/mmap.c:3216
 __mmput+0x115/0x390 kernel/fork.c:1128
 exit_mm+0x632/0x7b0 kernel/exit.c:557
 do_exit+0x5b8/0x2110 kernel/exit.c:877
 do_group_exit+0x12c/0x2f0 kernel/exit.c:1004
 get_signal+0x7eb/0x12e0 kernel/signal.c:2909
 arch_do_signal_or_restart+0xe6/0x12a0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9c4e74c019
Code: Unable to access opcode bytes at RIP 0x7f9c4e74bfef.
RSP: 002b:00007f9c4ddac0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f9c4e9d3fa8 RCX: 00007f9c4e74c019
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f9c4e9d3fa8
RBP: 00007f9c4e9d3fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9c4e9d4038 R14: 00007fff08ed51f0 R15: 00007fff08ed52d8
 </TASK>

report is corrupted, running repro again
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): perf_event_open$cgroup
program crashed: INFO: rcu detected stall in corrupted
report is corrupted, running repro again
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): perf_event_open$cgroup
program crashed: INFO: rcu detected stall in corrupted
report is corrupted, running repro again
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): perf_event_open$cgroup
program crashed: no output from test machine
final repro crashed as (corrupted=false):