Extracting prog: 55.999721391s Minimizing prog: 13m1.898660595s Simplifying prog options: 0s Extracting C: 34.857433784s Simplifying C: 2m45.397802923s extracting reproducer from 82 programs testing a last program of every proc single: executing 32 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='sysfs\x00', &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program crashed: divide error in damon_reclaim_timer_fn single: successfully extracted reproducer found reproducer with 6 syscalls minimizing guilty program testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='sysfs\x00', &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='sysfs\x00', &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) write(0xffffffffffffffff, &(0x7f0000000240)='Y\x00', 0x2) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='sysfs\x00', &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r0, &(0x7f0000000240)='Y\x00', 0x2) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='sysfs\x00', &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) write(0xffffffffffffffff, &(0x7f0000000180)='0\x00', 0x2) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r0, &(0x7f0000000240)='Y\x00', 0x2) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount-openat-write-openat-write detailed listing: executing program 0: mount(&(0x7f0000000040)=@filename='sysfs\x00', &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, 0x0, 0x1ff) mount(&(0x7f0000000040)=@filename='sysfs\x00', &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program crashed: divide error in damon_reclaim_timer_fn testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, 0x0, &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', 0x0, 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, 0x0, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180), 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, 0x0, 0x0) program did not crash testing program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240), 0x0) program did not crash extracting C reproducer testing compiled C program (duration=30.540895269s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write program crashed: divide error in damon_reclaim_timer_fn simplifying C reproducer testing compiled C program (duration=30.540895269s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write program crashed: divide error in damon_reclaim_timer_fn testing compiled C program (duration=30.540895269s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write program crashed: divide error in damon_reclaim_timer_fn testing compiled C program (duration=30.540895269s, {Threaded:false Repeat:false 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}}): mkdirat-mount-openat-write-openat-write program crashed: divide error in damon_reclaim_timer_fn testing compiled C program (duration=30.540895269s, {Threaded:false Repeat:false 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}}): mkdirat-mount-openat-write-openat-write program crashed: divide error in damon_reclaim_timer_fn testing compiled C program (duration=30.540895269s, {Threaded:false Repeat:false 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}}): mkdirat-mount-openat-write-openat-write program did not crash testing compiled C program (duration=30.540895269s, {Threaded:false Repeat:false 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:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write program crashed: divide error in damon_reclaim_timer_fn testing program (duration=30.540895269s, {Threaded:false Repeat:false 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:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program crashed: divide error in damon_reclaim_timer_fn validation run: crashed=true testing program (duration=30.540895269s, {Threaded:false Repeat:false 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:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program crashed: divide error in damon_reclaim_timer_fn validation run: crashed=true testing program (duration=30.540895269s, {Threaded:false Repeat:false 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:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/module/damon_reclaim/parameters/aggr_interval\x00', 0x2, 0x0) write(r0, &(0x7f0000000180)='0\x00', 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/damon_reclaim/parameters/enabled\x00', 0x2, 0x0) write(r1, &(0x7f0000000240)='Y\x00', 0x2) program crashed: divide error in damon_reclaim_timer_fn validation run: crashed=true reproducing took 19m33.89137376s repro crashed as (corrupted=false): divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 370 Comm: kworker/1:6 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events damon_reclaim_timer_fn RIP: 0010:damon_reclaim_new_scheme mm/damon/reclaim.c:281 [inline] RIP: 0010:damon_reclaim_turn mm/damon/reclaim.c:323 [inline] RIP: 0010:damon_reclaim_timer_fn+0x33e/0x530 mm/damon/reclaim.c:354 Code: 1e 05 48 89 44 24 78 48 8b 05 46 33 1e 05 48 89 84 24 80 00 00 00 c7 84 24 90 00 00 00 01 00 00 00 48 8b 05 14 33 1e 05 31 d2 <48> f7 35 53 33 1e 05 bf 00 10 00 00 48 c7 c6 ff ff ff ff 31 d2 31 RSP: 0018:ffffc90001987800 EFLAGS: 00010246 RAX: 0000000007270e00 RBX: fffff52000330f00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90001987bf8 RBP: ffffc90001987d20 R08: ffffc90001987bf7 R09: ffffc90001987888 R10: dffffc0000000000 R11: fffff52000330f7f R12: 0000000000000001 R13: dffffc0000000000 R14: ffff888110c8e000 R15: ffffc90001987870 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33663fff CR3: 000000000640f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x6fd/0xbc0 kernel/workqueue.c:2301 worker_thread+0xa8e/0x13c0 kernel/workqueue.c:2447 kthread+0x324/0x3b0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Modules linked in: ---[ end trace 48e2e4e4a9d717ab ]--- RIP: 0010:damon_reclaim_new_scheme mm/damon/reclaim.c:281 [inline] RIP: 0010:damon_reclaim_turn mm/damon/reclaim.c:323 [inline] RIP: 0010:damon_reclaim_timer_fn+0x33e/0x530 mm/damon/reclaim.c:354 Code: 1e 05 48 89 44 24 78 48 8b 05 46 33 1e 05 48 89 84 24 80 00 00 00 c7 84 24 90 00 00 00 01 00 00 00 48 8b 05 14 33 1e 05 31 d2 <48> f7 35 53 33 1e 05 bf 00 10 00 00 48 c7 c6 ff ff ff ff 31 d2 31 RSP: 0018:ffffc90001987800 EFLAGS: 00010246 RAX: 0000000007270e00 RBX: fffff52000330f00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90001987bf8 RBP: ffffc90001987d20 R08: ffffc90001987bf7 R09: ffffc90001987888 R10: dffffc0000000000 R11: fffff52000330f7f R12: 0000000000000001 R13: dffffc0000000000 R14: ffff888110c8e000 R15: ffffc90001987870 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33663fff CR3: 000000010cfab000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 05 48 89 44 24 add $0x24448948,%eax 5: 78 48 js 0x4f 7: 8b 05 46 33 1e 05 mov 0x51e3346(%rip),%eax # 0x51e3353 d: 48 89 84 24 80 00 00 mov %rax,0x80(%rsp) 14: 00 15: c7 84 24 90 00 00 00 movl $0x1,0x90(%rsp) 1c: 01 00 00 00 20: 48 8b 05 14 33 1e 05 mov 0x51e3314(%rip),%rax # 0x51e333b 27: 31 d2 xor %edx,%edx * 29: 48 f7 35 53 33 1e 05 divq 0x51e3353(%rip) # 0x51e3383 <-- trapping instruction 30: bf 00 10 00 00 mov $0x1000,%edi 35: 48 c7 c6 ff ff ff ff mov $0xffffffffffffffff,%rsi 3c: 31 d2 xor %edx,%edx 3e: 31 .byte 0x31 final repro crashed as (corrupted=false): divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 370 Comm: kworker/1:6 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events damon_reclaim_timer_fn RIP: 0010:damon_reclaim_new_scheme mm/damon/reclaim.c:281 [inline] RIP: 0010:damon_reclaim_turn mm/damon/reclaim.c:323 [inline] RIP: 0010:damon_reclaim_timer_fn+0x33e/0x530 mm/damon/reclaim.c:354 Code: 1e 05 48 89 44 24 78 48 8b 05 46 33 1e 05 48 89 84 24 80 00 00 00 c7 84 24 90 00 00 00 01 00 00 00 48 8b 05 14 33 1e 05 31 d2 <48> f7 35 53 33 1e 05 bf 00 10 00 00 48 c7 c6 ff ff ff ff 31 d2 31 RSP: 0018:ffffc90001987800 EFLAGS: 00010246 RAX: 0000000007270e00 RBX: fffff52000330f00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90001987bf8 RBP: ffffc90001987d20 R08: ffffc90001987bf7 R09: ffffc90001987888 R10: dffffc0000000000 R11: fffff52000330f7f R12: 0000000000000001 R13: dffffc0000000000 R14: ffff888110c8e000 R15: ffffc90001987870 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33663fff CR3: 000000000640f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x6fd/0xbc0 kernel/workqueue.c:2301 worker_thread+0xa8e/0x13c0 kernel/workqueue.c:2447 kthread+0x324/0x3b0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Modules linked in: ---[ end trace 48e2e4e4a9d717ab ]--- RIP: 0010:damon_reclaim_new_scheme mm/damon/reclaim.c:281 [inline] RIP: 0010:damon_reclaim_turn mm/damon/reclaim.c:323 [inline] RIP: 0010:damon_reclaim_timer_fn+0x33e/0x530 mm/damon/reclaim.c:354 Code: 1e 05 48 89 44 24 78 48 8b 05 46 33 1e 05 48 89 84 24 80 00 00 00 c7 84 24 90 00 00 00 01 00 00 00 48 8b 05 14 33 1e 05 31 d2 <48> f7 35 53 33 1e 05 bf 00 10 00 00 48 c7 c6 ff ff ff ff 31 d2 31 RSP: 0018:ffffc90001987800 EFLAGS: 00010246 RAX: 0000000007270e00 RBX: fffff52000330f00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90001987bf8 RBP: ffffc90001987d20 R08: ffffc90001987bf7 R09: ffffc90001987888 R10: dffffc0000000000 R11: fffff52000330f7f R12: 0000000000000001 R13: dffffc0000000000 R14: ffff888110c8e000 R15: ffffc90001987870 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33663fff CR3: 000000010cfab000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 05 48 89 44 24 add $0x24448948,%eax 5: 78 48 js 0x4f 7: 8b 05 46 33 1e 05 mov 0x51e3346(%rip),%eax # 0x51e3353 d: 48 89 84 24 80 00 00 mov %rax,0x80(%rsp) 14: 00 15: c7 84 24 90 00 00 00 movl $0x1,0x90(%rsp) 1c: 01 00 00 00 20: 48 8b 05 14 33 1e 05 mov 0x51e3314(%rip),%rax # 0x51e333b 27: 31 d2 xor %edx,%edx * 29: 48 f7 35 53 33 1e 05 divq 0x51e3353(%rip) # 0x51e3383 <-- trapping instruction 30: bf 00 10 00 00 mov $0x1000,%edi 35: 48 c7 c6 ff ff ff ff mov $0xffffffffffffffff,%rsi 3c: 31 d2 xor %edx,%edx 3e: 31 .byte 0x31