Extracting prog: 1m52.683035966s
Minimizing prog: 32m10.392527275s
Simplifying prog options: 0s
Extracting C: 50.807104963s
Simplifying C: 8m8.824999551s


extracting reproducer from 37 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-mmap-socketpair$unix-connect$unix-recvmmsg-openat$sndtimer-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap-read$FUSE
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
connect$unix(0xffffffffffffffff, &(0x7f000057eff8)=@abs, 0x6e)
recvmmsg(0xffffffffffffffff, 0x0, 0x0, 0x2, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x113100)
r1 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r1, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r1, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r1, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r1)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)
read$FUSE(r0, &(0x7f0000005140)={0x2020}, 0x2020)

program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
single: successfully extracted reproducer
found reproducer with 16 syscalls
minimizing guilty program
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-mmap-socketpair$unix-connect$unix-recvmmsg-openat$sndtimer-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
connect$unix(0xffffffffffffffff, &(0x7f000057eff8)=@abs, 0x6e)
recvmmsg(0xffffffffffffffff, 0x0, 0x0, 0x2, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x113100)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-mmap-socketpair$unix-connect$unix-recvmmsg-openat$sndtimer-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
connect$unix(0xffffffffffffffff, &(0x7f000057eff8)=@abs, 0x6e)
recvmmsg(0xffffffffffffffff, 0x0, 0x0, 0x2, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x113100)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)

program did not crash
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-mmap-socketpair$unix-connect$unix-recvmmsg-openat$sndtimer-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
connect$unix(0xffffffffffffffff, &(0x7f000057eff8)=@abs, 0x6e)
recvmmsg(0xffffffffffffffff, 0x0, 0x0, 0x2, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x113100)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program did not crash
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-mmap-socketpair$unix-connect$unix-recvmmsg-openat$sndtimer-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
connect$unix(0xffffffffffffffff, &(0x7f000057eff8)=@abs, 0x6e)
recvmmsg(0xffffffffffffffff, 0x0, 0x0, 0x2, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x113100)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program did not crash
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-mmap-socketpair$unix-connect$unix-recvmmsg-openat$sndtimer-userfaultfd-ioctl$UFFDIO_API-readv-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
connect$unix(0xffffffffffffffff, &(0x7f000057eff8)=@abs, 0x6e)
recvmmsg(0xffffffffffffffff, 0x0, 0x0, 0x2, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x113100)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program did not crash
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-mmap-socketpair$unix-connect$unix-recvmmsg-openat$sndtimer-userfaultfd-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
connect$unix(0xffffffffffffffff, &(0x7f000057eff8)=@abs, 0x6e)
recvmmsg(0xffffffffffffffff, 0x0, 0x0, 0x2, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x113100)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program did not crash
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-mmap-socketpair$unix-connect$unix-recvmmsg-openat$sndtimer-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
connect$unix(0xffffffffffffffff, &(0x7f000057eff8)=@abs, 0x6e)
recvmmsg(0xffffffffffffffff, 0x0, 0x0, 0x2, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x113100)
ioctl$UFFDIO_API(0xffffffffffffffff, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(0xffffffffffffffff, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(0xffffffffffffffff, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(0xffffffffffffffff)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program did not crash
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-mmap-socketpair$unix-connect$unix-recvmmsg-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
connect$unix(0xffffffffffffffff, &(0x7f000057eff8)=@abs, 0x6e)
recvmmsg(0xffffffffffffffff, 0x0, 0x0, 0x2, 0x0)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-mmap-socketpair$unix-connect$unix-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
connect$unix(0xffffffffffffffff, &(0x7f000057eff8)=@abs, 0x6e)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-mmap-socketpair$unix-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-mmap-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-getpid-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
getpid()
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-sched_setscheduler-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-prlimit64-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
syz_open_procfs(0x0, 0x0)
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program did not crash
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, 0x0)
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program did not crash
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, 0x0)
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000140)=""/201, 0xc9}], 0x6) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program did not crash
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, 0x0, 0x0) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program did not crash
testing program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
detailed listing:
executing program 0:
r0 = userfaultfd(0x80001)
ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000000)={0xaa, 0x60})
ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000100)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1})
readv(r0, &(0x7f0000000240)=[{0x0}], 0x1) (fail_nth: 3)
close(r0)
mremap(&(0x7f0000638000/0x1000)=nil, 0x1000, 0x2000, 0x3, &(0x7f0000805000/0x2000)=nil)

program did not crash
extracting C reproducer
testing compiled C program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
simplifying C reproducer
testing compiled C program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
program did not crash
testing compiled C program (duration=47.846873154s, {Threaded:true 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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
program did not crash
testing compiled C program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing compiled C program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing compiled C program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing compiled C program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing compiled C program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
testing compiled C program (duration=47.846873154s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): userfaultfd-ioctl$UFFDIO_API-ioctl$UFFDIO_REGISTER-readv-close-mremap
program crashed: BUG: unable to handle kernel paging request in vma_merge_existing_range
reproducing took 43m2.707690203s
repro crashed as (corrupted=false):
RAX: 0000000000000020 RBX: 00007fb8f66f03c8 RCX: 00007fb8f666e099
RDX: 0000000000000006 RSI: 0000200000000240 RDI: 0000000000000003
RBP: 00007fb8f66f03c0 R08: 00007fb8f6620fa7 R09: 0000000000000033
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb8f66bd284
R13: 00007fb8f6621210 R14: 0000000000000001 R15: 0000200000000240
 </TASK>
BUG: unable to handle page fault for address: fffffffffffffff4
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD df84067 P4D df84067 PUD df86067 PMD 0 
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 5816 Comm: syz-executor102 Not tainted 6.14.0-rc7-syzkaller-00205-g586de92313fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:vma_merge_existing_range+0x266/0x2070 mm/vma.c:734
Code: e8 0f 47 ac ff 48 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 1c 19 00 00 48 8b 04 24 48 8b 74 24 08 <4c> 8b 38 4c 89 ff e8 4f 41 ac ff 48 8b 44 24 08 49 39 c7 0f 83 db
RSP: 0018:ffffc90002ff7998 EFLAGS: 00010246
RAX: fffffffffffffff4 RBX: ffffc90002ff7af8 RCX: ffffffff820db0e5
RDX: 1ffffffffffffffe RSI: 0000200000807000 RDI: 0000000000000005
RBP: 0000200000ce2000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffffc90002ff7b18 R14: ffff888076ca2d90 R15: ffff88807a0e6400
FS:  00007fb8f66216c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff4 CR3: 00000000343e2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vma_modify.constprop.0+0x87/0x410 mm/vma.c:1517
 vma_modify_flags_uffd+0x241/0x2e0 mm/vma.c:1598
 userfaultfd_clear_vma+0x91/0x130 mm/userfaultfd.c:1906
 userfaultfd_release_all+0x2ae/0x4c0 mm/userfaultfd.c:2024
 userfaultfd_release+0xf4/0x1c0 fs/userfaultfd.c:865
 __fput+0x3ff/0xb70 fs/file_table.c:464
 task_work_run+0x14e/0x250 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb8f666e099
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 31 1b 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb8f6621208 EFLAGS: 00000246 ORIG_RAX: 0000000000000013
RAX: 0000000000000020 RBX: 00007fb8f66f03c8 RCX: 00007fb8f666e099
RDX: 0000000000000006 RSI: 0000200000000240 RDI: 0000000000000003
RBP: 00007fb8f66f03c0 R08: 00007fb8f6620fa7 R09: 0000000000000033
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb8f66bd284
R13: 00007fb8f6621210 R14: 0000000000000001 R15: 0000200000000240
 </TASK>
Modules linked in:
CR2: fffffffffffffff4
---[ end trace 0000000000000000 ]---
RIP: 0010:vma_merge_existing_range+0x266/0x2070 mm/vma.c:734
Code: e8 0f 47 ac ff 48 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 1c 19 00 00 48 8b 04 24 48 8b 74 24 08 <4c> 8b 38 4c 89 ff e8 4f 41 ac ff 48 8b 44 24 08 49 39 c7 0f 83 db
RSP: 0018:ffffc90002ff7998 EFLAGS: 00010246
RAX: fffffffffffffff4 RBX: ffffc90002ff7af8 RCX: ffffffff820db0e5
RDX: 1ffffffffffffffe RSI: 0000200000807000 RDI: 0000000000000005
RBP: 0000200000ce2000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffffc90002ff7b18 R14: ffff888076ca2d90 R15: ffff88807a0e6400
FS:  00007fb8f66216c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff4 CR3: 00000000343e2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	e8 0f 47 ac ff       	call   0xffac4714
   5:	48 8b 14 24          	mov    (%rsp),%rdx
   9:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  10:	fc ff df
  13:	48 c1 ea 03          	shr    $0x3,%rdx
  17:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1b:	0f 85 1c 19 00 00    	jne    0x193d
  21:	48 8b 04 24          	mov    (%rsp),%rax
  25:	48 8b 74 24 08       	mov    0x8(%rsp),%rsi
* 2a:	4c 8b 38             	mov    (%rax),%r15 <-- trapping instruction
  2d:	4c 89 ff             	mov    %r15,%rdi
  30:	e8 4f 41 ac ff       	call   0xffac4184
  35:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
  3a:	49 39 c7             	cmp    %rax,%r15
  3d:	0f                   	.byte 0xf
  3e:	83                   	.byte 0x83
  3f:	db                   	.byte 0xdb

final repro crashed as (corrupted=false):
RAX: 0000000000000020 RBX: 00007fb8f66f03c8 RCX: 00007fb8f666e099
RDX: 0000000000000006 RSI: 0000200000000240 RDI: 0000000000000003
RBP: 00007fb8f66f03c0 R08: 00007fb8f6620fa7 R09: 0000000000000033
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb8f66bd284
R13: 00007fb8f6621210 R14: 0000000000000001 R15: 0000200000000240
 </TASK>
BUG: unable to handle page fault for address: fffffffffffffff4
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD df84067 P4D df84067 PUD df86067 PMD 0 
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 5816 Comm: syz-executor102 Not tainted 6.14.0-rc7-syzkaller-00205-g586de92313fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:vma_merge_existing_range+0x266/0x2070 mm/vma.c:734
Code: e8 0f 47 ac ff 48 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 1c 19 00 00 48 8b 04 24 48 8b 74 24 08 <4c> 8b 38 4c 89 ff e8 4f 41 ac ff 48 8b 44 24 08 49 39 c7 0f 83 db
RSP: 0018:ffffc90002ff7998 EFLAGS: 00010246
RAX: fffffffffffffff4 RBX: ffffc90002ff7af8 RCX: ffffffff820db0e5
RDX: 1ffffffffffffffe RSI: 0000200000807000 RDI: 0000000000000005
RBP: 0000200000ce2000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffffc90002ff7b18 R14: ffff888076ca2d90 R15: ffff88807a0e6400
FS:  00007fb8f66216c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff4 CR3: 00000000343e2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vma_modify.constprop.0+0x87/0x410 mm/vma.c:1517
 vma_modify_flags_uffd+0x241/0x2e0 mm/vma.c:1598
 userfaultfd_clear_vma+0x91/0x130 mm/userfaultfd.c:1906
 userfaultfd_release_all+0x2ae/0x4c0 mm/userfaultfd.c:2024
 userfaultfd_release+0xf4/0x1c0 fs/userfaultfd.c:865
 __fput+0x3ff/0xb70 fs/file_table.c:464
 task_work_run+0x14e/0x250 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb8f666e099
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 31 1b 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb8f6621208 EFLAGS: 00000246 ORIG_RAX: 0000000000000013
RAX: 0000000000000020 RBX: 00007fb8f66f03c8 RCX: 00007fb8f666e099
RDX: 0000000000000006 RSI: 0000200000000240 RDI: 0000000000000003
RBP: 00007fb8f66f03c0 R08: 00007fb8f6620fa7 R09: 0000000000000033
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb8f66bd284
R13: 00007fb8f6621210 R14: 0000000000000001 R15: 0000200000000240
 </TASK>
Modules linked in:
CR2: fffffffffffffff4
---[ end trace 0000000000000000 ]---
RIP: 0010:vma_merge_existing_range+0x266/0x2070 mm/vma.c:734
Code: e8 0f 47 ac ff 48 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 1c 19 00 00 48 8b 04 24 48 8b 74 24 08 <4c> 8b 38 4c 89 ff e8 4f 41 ac ff 48 8b 44 24 08 49 39 c7 0f 83 db
RSP: 0018:ffffc90002ff7998 EFLAGS: 00010246
RAX: fffffffffffffff4 RBX: ffffc90002ff7af8 RCX: ffffffff820db0e5
RDX: 1ffffffffffffffe RSI: 0000200000807000 RDI: 0000000000000005
RBP: 0000200000ce2000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffffc90002ff7b18 R14: ffff888076ca2d90 R15: ffff88807a0e6400
FS:  00007fb8f66216c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff4 CR3: 00000000343e2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	e8 0f 47 ac ff       	call   0xffac4714
   5:	48 8b 14 24          	mov    (%rsp),%rdx
   9:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  10:	fc ff df
  13:	48 c1 ea 03          	shr    $0x3,%rdx
  17:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1b:	0f 85 1c 19 00 00    	jne    0x193d
  21:	48 8b 04 24          	mov    (%rsp),%rax
  25:	48 8b 74 24 08       	mov    0x8(%rsp),%rsi
* 2a:	4c 8b 38             	mov    (%rax),%r15 <-- trapping instruction
  2d:	4c 89 ff             	mov    %r15,%rdi
  30:	e8 4f 41 ac ff       	call   0xffac4184
  35:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
  3a:	49 39 c7             	cmp    %rax,%r15
  3d:	0f                   	.byte 0xf
  3e:	83                   	.byte 0x83
  3f:	db                   	.byte 0xdb