Extracting prog: 3m46.391695483s
Minimizing prog: 26m48.51950828s
Simplifying prog options: 0s
Extracting C: 35.948646154s
Simplifying C: 12m56.162039084s
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:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program crashed: WARNING: refcount bug in __vma_enter_locked
single: successfully extracted reproducer
found reproducer with 8 syscalls
minimizing guilty program
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
socket$xdp(0x2c, 0x3, 0x0)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
setsockopt$XDP_UMEM_REG(0xffffffffffffffff, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
ioctl$UFFDIO_API(0xffffffffffffffff, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(0xffffffffffffffff, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r0 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r0, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(0xffffffffffffffff, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, 0x0)
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, 0x0)
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, 0x0, 0x0)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={0x0, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, 0x0)
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
program crashed: WARNING: refcount bug in __vma_enter_locked
simplifying C reproducer
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
program did not crash
testing compiled C program (duration=1m40s, {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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
program crashed: WARNING: refcount bug in __vma_enter_locked
testing compiled C program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
program crashed: WARNING: refcount bug in __vma_enter_locked
testing compiled C program (duration=1m40s, {Threaded:true 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
program crashed: WARNING: refcount bug in __vma_enter_locked
testing compiled C program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
program crashed: WARNING: refcount bug in __vma_enter_locked
testing compiled C program (duration=1m40s, {Threaded:true 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
program crashed: WARNING: refcount bug in __vma_enter_locked
testing compiled C program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
program crashed: WARNING: refcount bug in __vma_enter_locked
testing program (duration=1m40s, {Threaded:true 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program crashed: WARNING: refcount bug in __vma_enter_locked
validation run: crashed=true
testing program (duration=1m40s, {Threaded:true 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program crashed: WARNING: refcount bug in __vma_enter_locked
validation run: crashed=true
testing program (duration=1m40s, {Threaded:true 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
validation run: crashed=false
testing program (duration=1m40s, {Threaded:true 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program did not crash
validation run: crashed=false
testing program (duration=1m40s, {Threaded:true 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}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-madvise-socket$xdp-setsockopt$XDP_UMEM_REG-ioctl$UFFDIO_COPY-syz_clone
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0))
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000080)={{&(0x7f0000ffd000/0x3000)=nil, 0x3000}, 0x1})
madvise(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x19)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/59, 0x304000, 0x800, 0x0, 0x3}, 0x20)
ioctl$UFFDIO_COPY(r0, 0xc028aa05, &(0x7f0000000100)={&(0x7f0000ffd000/0x3000)=nil, &(0x7f0000013000/0x4000)=nil, 0x3000, 0x3})
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
program crashed: WARNING: refcount bug in __vma_enter_locked
validation run: crashed=true
reproducing took 52m50.409780772s
repro crashed as (corrupted=false):
------------[ cut here ]------------
refcount_t: saturated; leaking memory.
WARNING: lib/refcount.c:19 at 0x0, CPU#0: syz.0.22/6009
Modules linked in:
CPU: 0 UID: 0 PID: 6009 Comm: syz.0.22 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:refcount_warn_saturate+0xc5/0x110 lib/refcount.c:19
Code: 61 05 33 0b 67 48 0f b9 3a eb 37 e8 b5 0e 2b fd 48 8d 3d 5e 05 33 0b 67 48 0f b9 3a eb 24 e8 a2 0e 2b fd 48 8d 3d 5b 05 33 0b <67> 48 0f b9 3a eb 11 e8 8f 0e 2b fd 48 8d 3d 58 05 33 0b 67 48 0f
RSP: 0018:ffffc90002f77568 EFLAGS: 00010293
RAX: ffffffff8496d15e RBX: 0000000000000000 RCX: ffff888032e50000
RDX: 0000000000000000 RSI: ffffffff8ea876c0 RDI: ffffffff8fc9d6c0
RBP: ffffc90002f77690 R08: ffff888032e50000 R09: 0000000000000005
R10: 0000000000000004 R11: 0000000000000000 R12: ffff88807e166940
R13: ffff88807e1668c0 R14: ffff88807e166940 R15: 0000000000000000
FS: 00007f5cb31476c0(0000) GS:ffff888125a3e000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5cb3146f98 CR3: 00000000753a6000 CR4: 00000000003526f0
Call Trace:
__refcount_add_not_zero include/linux/refcount.h:187 [inline]
refcount_add_not_zero include/linux/refcount.h:212 [inline]
__vma_enter_locked+0x62e/0x6a0 mm/mmap_lock.c:69
__vma_start_write+0x23/0x140 mm/mmap_lock.c:96
vma_start_write include/linux/mmap_lock.h:213 [inline]
vma_merge_existing_range mm/vma.c:900 [inline]
vma_modify+0xf62/0x1a70 mm/vma.c:1611
vma_modify_flags_uffd+0x204/0x250 mm/vma.c:1704
userfaultfd_clear_vma mm/userfaultfd.c:1995 [inline]
userfaultfd_release_all+0x34c/0x5d0 mm/userfaultfd.c:2114
userfaultfd_release+0xe7/0x1b0 fs/userfaultfd.c:887
__fput+0x44c/0xa70 fs/file_table.c:468
task_work_run+0x1d4/0x260 kernel/task_work.c:233
get_signal+0x11ec/0x1340 kernel/signal.c:2807
arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
exit_to_user_mode_loop+0x87/0x4f0 kernel/entry/common.c:75
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
do_syscall_64+0x2e3/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5cb238f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5cb3146fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff4 RBX: 00007f5cb25e6090 RCX: 00007f5cb238f749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f5cb2413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5cb25e6128 R14: 00007f5cb25e6090 R15: 00007ffff48a5158
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 05 33 0b 67 48 add $0x48670b33,%eax
5: 0f b9 3a ud1 (%rdx),%edi
8: eb 37 jmp 0x41
a: e8 b5 0e 2b fd call 0xfd2b0ec4
f: 48 8d 3d 5e 05 33 0b lea 0xb33055e(%rip),%rdi # 0xb330574
16: 67 48 0f b9 3a ud1 (%edx),%rdi
1b: eb 24 jmp 0x41
1d: e8 a2 0e 2b fd call 0xfd2b0ec4
22: 48 8d 3d 5b 05 33 0b lea 0xb33055b(%rip),%rdi # 0xb330584
* 29: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2e: eb 11 jmp 0x41
30: e8 8f 0e 2b fd call 0xfd2b0ec4
35: 48 8d 3d 58 05 33 0b lea 0xb330558(%rip),%rdi # 0xb330594
3c: 67 addr32
3d: 48 rex.W
3e: 0f .byte 0xf
final repro crashed as (corrupted=false):
------------[ cut here ]------------
refcount_t: saturated; leaking memory.
WARNING: lib/refcount.c:19 at 0x0, CPU#0: syz.0.22/6009
Modules linked in:
CPU: 0 UID: 0 PID: 6009 Comm: syz.0.22 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:refcount_warn_saturate+0xc5/0x110 lib/refcount.c:19
Code: 61 05 33 0b 67 48 0f b9 3a eb 37 e8 b5 0e 2b fd 48 8d 3d 5e 05 33 0b 67 48 0f b9 3a eb 24 e8 a2 0e 2b fd 48 8d 3d 5b 05 33 0b <67> 48 0f b9 3a eb 11 e8 8f 0e 2b fd 48 8d 3d 58 05 33 0b 67 48 0f
RSP: 0018:ffffc90002f77568 EFLAGS: 00010293
RAX: ffffffff8496d15e RBX: 0000000000000000 RCX: ffff888032e50000
RDX: 0000000000000000 RSI: ffffffff8ea876c0 RDI: ffffffff8fc9d6c0
RBP: ffffc90002f77690 R08: ffff888032e50000 R09: 0000000000000005
R10: 0000000000000004 R11: 0000000000000000 R12: ffff88807e166940
R13: ffff88807e1668c0 R14: ffff88807e166940 R15: 0000000000000000
FS: 00007f5cb31476c0(0000) GS:ffff888125a3e000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5cb3146f98 CR3: 00000000753a6000 CR4: 00000000003526f0
Call Trace:
__refcount_add_not_zero include/linux/refcount.h:187 [inline]
refcount_add_not_zero include/linux/refcount.h:212 [inline]
__vma_enter_locked+0x62e/0x6a0 mm/mmap_lock.c:69
__vma_start_write+0x23/0x140 mm/mmap_lock.c:96
vma_start_write include/linux/mmap_lock.h:213 [inline]
vma_merge_existing_range mm/vma.c:900 [inline]
vma_modify+0xf62/0x1a70 mm/vma.c:1611
vma_modify_flags_uffd+0x204/0x250 mm/vma.c:1704
userfaultfd_clear_vma mm/userfaultfd.c:1995 [inline]
userfaultfd_release_all+0x34c/0x5d0 mm/userfaultfd.c:2114
userfaultfd_release+0xe7/0x1b0 fs/userfaultfd.c:887
__fput+0x44c/0xa70 fs/file_table.c:468
task_work_run+0x1d4/0x260 kernel/task_work.c:233
get_signal+0x11ec/0x1340 kernel/signal.c:2807
arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
exit_to_user_mode_loop+0x87/0x4f0 kernel/entry/common.c:75
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
do_syscall_64+0x2e3/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5cb238f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5cb3146fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff4 RBX: 00007f5cb25e6090 RCX: 00007f5cb238f749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f5cb2413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5cb25e6128 R14: 00007f5cb25e6090 R15: 00007ffff48a5158
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 05 33 0b 67 48 add $0x48670b33,%eax
5: 0f b9 3a ud1 (%rdx),%edi
8: eb 37 jmp 0x41
a: e8 b5 0e 2b fd call 0xfd2b0ec4
f: 48 8d 3d 5e 05 33 0b lea 0xb33055e(%rip),%rdi # 0xb330574
16: 67 48 0f b9 3a ud1 (%edx),%rdi
1b: eb 24 jmp 0x41
1d: e8 a2 0e 2b fd call 0xfd2b0ec4
22: 48 8d 3d 5b 05 33 0b lea 0xb33055b(%rip),%rdi # 0xb330584
* 29: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2e: eb 11 jmp 0x41
30: e8 8f 0e 2b fd call 0xfd2b0ec4
35: 48 8d 3d 58 05 33 0b lea 0xb330558(%rip),%rdi # 0xb330594
3c: 67 addr32
3d: 48 rex.W
3e: 0f .byte 0xf