Extracting prog: 2m45.724584311s
Minimizing prog: 15m46.504368667s
Simplifying prog options: 0s
Extracting C: 1m51.566299408s
Simplifying C: 12m54.396248067s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
io_uring_setup(0x2e34, &(0x7f0000000180))
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program did not crash
program crashed: BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap
detailed listing:
executing program 0:
syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
io_uring_setup(0x2e34, &(0x7f0000000180))
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)

program did not crash
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
io_uring_setup(0x2e34, &(0x7f0000000180))
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program did not crash
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-io_uring_setup-unshare-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
io_uring_setup(0x2e34, &(0x7f0000000180))
unshare(0x6060400)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program did not crash
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-io_uring_setup-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
io_uring_setup(0x2e34, &(0x7f0000000180))
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program did not crash
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program did not crash
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
io_uring_setup(0x2e34, &(0x7f0000000180))
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)
ioctl$KVM_SET_USER_MEMORY_REGION(0xffffffffffffffff, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program did not crash
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
io_uring_setup(0x2e34, &(0x7f0000000180))
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program did not crash
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, 0x0)
io_uring_setup(0x2e34, &(0x7f0000000180))
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program did not crash
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
io_uring_setup(0x2e34, 0x0)
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program did not crash
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
io_uring_setup(0x2e34, &(0x7f0000000180))
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
program crashed: BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio
simplifying C reproducer
testing compiled C program (duration=47.242234003s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
program did not crash
testing compiled C program (duration=47.242234003s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:namespace 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
program did not crash
testing compiled C program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:namespace 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}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
program did not crash
testing compiled C program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
program crashed: BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio
testing compiled C program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
program crashed: BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio
testing compiled C program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
program crashed: BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio
testing compiled C program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
program crashed: BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio
testing compiled C program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
program crashed: BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio
testing compiled C program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
program crashed: BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
io_uring_setup(0x2e34, &(0x7f0000000180))
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program crashed: BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio
validation run: crashed=true
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
io_uring_setup(0x2e34, &(0x7f0000000180))
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program did not crash
validation run: crashed=false
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
io_uring_setup(0x2e34, &(0x7f0000000180))
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program crashed: BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio
validation run: crashed=true
testing program (duration=47.242234003s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-io_uring_setup-unshare-socket$nl_route-mmap-ioctl$KVM_SET_USER_MEMORY_REGION
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000040)='maps\x00')
io_uring_setup(0x2e34, &(0x7f0000000180))
unshare(0x6060400)
socket$nl_route(0x10, 0x3, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) (async)
ioctl$KVM_SET_USER_MEMORY_REGION(r0, 0xc0686611, &(0x7f0000000180)={0x67, 0x0, 0x3f, 0x2000, &(0x7f0000ffe000/0x2000)=nil})

program crashed: BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio
validation run: crashed=true
reproducing took 40m26.682628013s
repro crashed as (corrupted=false):
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 8000000056a42067 P4D 8000000056a42067 PUD 0 
Oops: Oops: 0010 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 6106 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc900034c7938 EFLAGS: 00010293
RAX: ffffffff81fb26d4 RBX: 1ffffd40003188b0 RCX: ffff88802e7c9e80
RDX: 0000000000000000 RSI: ffffea00018c4580 RDI: ffff88807c7f28c0
RBP: ffffc900034c79f8 R08: ffffea00018c4587 R09: 1ffffd40003188b0
R10: dffffc0000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffea00018c4588 R14: ffffea00018c4580 R15: 1ffffd40003188b1
FS:  00007fc5a7b436c0(0000) GS:ffff888125e35000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000074ee0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 filemap_read_folio+0x117/0x380 mm/filemap.c:2496
 do_read_cache_folio+0x358/0x590 mm/filemap.c:4096
 freader_get_folio+0x3c7/0x830 lib/buildid.c:58
 freader_fetch+0xa3/0x750 lib/buildid.c:101
 __build_id_parse+0x133/0x7d0 lib/buildid.c:289
 do_procmap_query fs/proc/task_mmu.c:733 [inline]
 procfs_procmap_ioctl+0x76f/0xce0 fs/proc/task_mmu.c:813
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc5a6d8f749
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:00007fc5a7b43038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc5a6fe6090 RCX: 00007fc5a6d8f749
RDX: 0000200000000180 RSI: 00000000c0686611 RDI: 0000000000000003
RBP: 00007fc5a6e13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc5a6fe6128 R14: 00007fc5a6fe6090 R15: 00007ffc8ea85678
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc900034c7938 EFLAGS: 00010293
RAX: ffffffff81fb26d4 RBX: 1ffffd40003188b0 RCX: ffff88802e7c9e80
RDX: 0000000000000000 RSI: ffffea00018c4580 RDI: ffff88807c7f28c0
RBP: ffffc900034c79f8 R08: ffffea00018c4587 R09: 1ffffd40003188b0
R10: dffffc0000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffea00018c4588 R14: ffffea00018c4580 R15: 1ffffd40003188b1
FS:  00007fc5a7b436c0(0000) GS:ffff888125e35000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000074ee0000 CR4: 00000000003526f0

final repro crashed as (corrupted=false):
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 8000000056a42067 P4D 8000000056a42067 PUD 0 
Oops: Oops: 0010 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 6106 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc900034c7938 EFLAGS: 00010293
RAX: ffffffff81fb26d4 RBX: 1ffffd40003188b0 RCX: ffff88802e7c9e80
RDX: 0000000000000000 RSI: ffffea00018c4580 RDI: ffff88807c7f28c0
RBP: ffffc900034c79f8 R08: ffffea00018c4587 R09: 1ffffd40003188b0
R10: dffffc0000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffea00018c4588 R14: ffffea00018c4580 R15: 1ffffd40003188b1
FS:  00007fc5a7b436c0(0000) GS:ffff888125e35000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000074ee0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 filemap_read_folio+0x117/0x380 mm/filemap.c:2496
 do_read_cache_folio+0x358/0x590 mm/filemap.c:4096
 freader_get_folio+0x3c7/0x830 lib/buildid.c:58
 freader_fetch+0xa3/0x750 lib/buildid.c:101
 __build_id_parse+0x133/0x7d0 lib/buildid.c:289
 do_procmap_query fs/proc/task_mmu.c:733 [inline]
 procfs_procmap_ioctl+0x76f/0xce0 fs/proc/task_mmu.c:813
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc5a6d8f749
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:00007fc5a7b43038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc5a6fe6090 RCX: 00007fc5a6d8f749
RDX: 0000200000000180 RSI: 00000000c0686611 RDI: 0000000000000003
RBP: 00007fc5a6e13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc5a6fe6128 R14: 00007fc5a6fe6090 R15: 00007ffc8ea85678
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc900034c7938 EFLAGS: 00010293
RAX: ffffffff81fb26d4 RBX: 1ffffd40003188b0 RCX: ffff88802e7c9e80
RDX: 0000000000000000 RSI: ffffea00018c4580 RDI: ffff88807c7f28c0
RBP: ffffc900034c79f8 R08: ffffea00018c4587 R09: 1ffffd40003188b0
R10: dffffc0000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffea00018c4588 R14: ffffea00018c4580 R15: 1ffffd40003188b1
FS:  00007fc5a7b436c0(0000) GS:ffff888125e35000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000074ee0000 CR4: 00000000003526f0