Extracting prog: 53.731438572s
Minimizing prog: 30m30.150707472s
Simplifying prog options: 0s
Extracting C: 1m12.717370102s
Simplifying C: 9m36.385231724s


extracting reproducer from 24 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: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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-getsockopt$sock_buf-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap-syz_init_net_socket$bt_l2cap-recvmsg-connect$packet-shutdown-socket$inet_mptcp-ioctl$DRM_IOCTL_GEM_OPEN-ioctl$DRM_IOCTL_MODE_GETFB2-ioctl$DRM_IOCTL_MODE_ADDFB2-setsockopt$inet_tcp_int
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
getsockopt$sock_buf(r1, 0x1, 0x1c, 0x0, &(0x7f0000000100)=0x2000)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x3)
recvmsg(r2, &(0x7f0000001a40)={0x0, 0x0, 0x0}, 0x2)
connect$packet(r2, &(0x7f0000000200)={0x1f, 0xf8, 0x0, 0x1, 0x82}, 0x14)
shutdown(r2, 0x1)
r3 = socket$inet_mptcp(0x2, 0x1, 0x106)
ioctl$DRM_IOCTL_GEM_OPEN(r0, 0xc010640b, &(0x7f0000000180)={0x0, <r4=>0x0})
ioctl$DRM_IOCTL_MODE_GETFB2(r0, 0xc06864ce, &(0x7f0000000200)={0x0, 0x9, 0x2, 0xff, 0x0, [0x0, 0x0, 0x0, <r5=>0x0], [0x2, 0x7, 0x7, 0x6], [0x1, 0x81, 0x4, 0xff], [0x7f, 0x1, 0x8]})
ioctl$DRM_IOCTL_MODE_ADDFB2(r0, 0xc06864b8, &(0x7f0000000280)={0x0, 0x7fff, 0x2b0, 0x4, 0x0, [r4, 0x0, 0x0, r5], [0x40, 0x8001, 0x8ef, 0x7], [0xffffffff, 0x5, 0x8001], [0x0, 0x22, 0xff, 0x3]})
setsockopt$inet_tcp_int(r3, 0x6, 0x19, &(0x7f00000001c0)=0x1, 0x4)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
single: successfully extracted reproducer
found reproducer with 17 syscalls
minimizing guilty program
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-getsockopt$sock_buf-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap-syz_init_net_socket$bt_l2cap-recvmsg-connect$packet-shutdown-socket$inet_mptcp-ioctl$DRM_IOCTL_GEM_OPEN-ioctl$DRM_IOCTL_MODE_GETFB2-ioctl$DRM_IOCTL_MODE_ADDFB2
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
getsockopt$sock_buf(r1, 0x1, 0x1c, 0x0, &(0x7f0000000100)=0x2000)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x3)
recvmsg(r2, &(0x7f0000001a40)={0x0, 0x0, 0x0}, 0x2)
connect$packet(r2, &(0x7f0000000200)={0x1f, 0xf8, 0x0, 0x1, 0x82}, 0x14)
shutdown(r2, 0x1)
socket$inet_mptcp(0x2, 0x1, 0x106)
ioctl$DRM_IOCTL_GEM_OPEN(r0, 0xc010640b, &(0x7f0000000180)={0x0, <r3=>0x0})
ioctl$DRM_IOCTL_MODE_GETFB2(r0, 0xc06864ce, &(0x7f0000000200)={0x0, 0x9, 0x2, 0xff, 0x0, [0x0, 0x0, 0x0, <r4=>0x0], [0x2, 0x7, 0x7, 0x6], [0x1, 0x81, 0x4, 0xff], [0x7f, 0x1, 0x8]})
ioctl$DRM_IOCTL_MODE_ADDFB2(r0, 0xc06864b8, &(0x7f0000000280)={0x0, 0x7fff, 0x2b0, 0x4, 0x0, [r3, 0x0, 0x0, r4], [0x40, 0x8001, 0x8ef, 0x7], [0xffffffff, 0x5, 0x8001], [0x0, 0x22, 0xff, 0x3]})

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-getsockopt$sock_buf-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap-syz_init_net_socket$bt_l2cap-recvmsg-connect$packet-shutdown-socket$inet_mptcp-ioctl$DRM_IOCTL_GEM_OPEN-ioctl$DRM_IOCTL_MODE_GETFB2
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
getsockopt$sock_buf(r1, 0x1, 0x1c, 0x0, &(0x7f0000000100)=0x2000)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x3)
recvmsg(r2, &(0x7f0000001a40)={0x0, 0x0, 0x0}, 0x2)
connect$packet(r2, &(0x7f0000000200)={0x1f, 0xf8, 0x0, 0x1, 0x82}, 0x14)
shutdown(r2, 0x1)
socket$inet_mptcp(0x2, 0x1, 0x106)
ioctl$DRM_IOCTL_GEM_OPEN(r0, 0xc010640b, &(0x7f0000000180))
ioctl$DRM_IOCTL_MODE_GETFB2(r0, 0xc06864ce, &(0x7f0000000200)={0x0, 0x9, 0x2, 0xff, 0x0, [], [0x2, 0x7, 0x7, 0x6], [0x1, 0x81, 0x4, 0xff], [0x7f, 0x1, 0x8]})

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-getsockopt$sock_buf-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap-syz_init_net_socket$bt_l2cap-recvmsg-connect$packet-shutdown-socket$inet_mptcp-ioctl$DRM_IOCTL_GEM_OPEN
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
getsockopt$sock_buf(r1, 0x1, 0x1c, 0x0, &(0x7f0000000100)=0x2000)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x3)
recvmsg(r2, &(0x7f0000001a40)={0x0, 0x0, 0x0}, 0x2)
connect$packet(r2, &(0x7f0000000200)={0x1f, 0xf8, 0x0, 0x1, 0x82}, 0x14)
shutdown(r2, 0x1)
socket$inet_mptcp(0x2, 0x1, 0x106)
ioctl$DRM_IOCTL_GEM_OPEN(r0, 0xc010640b, &(0x7f0000000180))

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-getsockopt$sock_buf-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap-syz_init_net_socket$bt_l2cap-recvmsg-connect$packet-shutdown-socket$inet_mptcp
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
getsockopt$sock_buf(r1, 0x1, 0x1c, 0x0, &(0x7f0000000100)=0x2000)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x3)
recvmsg(r2, &(0x7f0000001a40)={0x0, 0x0, 0x0}, 0x2)
connect$packet(r2, &(0x7f0000000200)={0x1f, 0xf8, 0x0, 0x1, 0x82}, 0x14)
shutdown(r2, 0x1)
socket$inet_mptcp(0x2, 0x1, 0x106)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-getsockopt$sock_buf-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap-syz_init_net_socket$bt_l2cap-recvmsg-connect$packet-shutdown
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
getsockopt$sock_buf(r1, 0x1, 0x1c, 0x0, &(0x7f0000000100)=0x2000)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x3)
recvmsg(r2, &(0x7f0000001a40)={0x0, 0x0, 0x0}, 0x2)
connect$packet(r2, &(0x7f0000000200)={0x1f, 0xf8, 0x0, 0x1, 0x82}, 0x14)
shutdown(r2, 0x1)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-getsockopt$sock_buf-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap-syz_init_net_socket$bt_l2cap-recvmsg-connect$packet
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
getsockopt$sock_buf(r1, 0x1, 0x1c, 0x0, &(0x7f0000000100)=0x2000)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x3)
recvmsg(r2, &(0x7f0000001a40)={0x0, 0x0, 0x0}, 0x2)
connect$packet(r2, &(0x7f0000000200)={0x1f, 0xf8, 0x0, 0x1, 0x82}, 0x14)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-getsockopt$sock_buf-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap-syz_init_net_socket$bt_l2cap-recvmsg
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
getsockopt$sock_buf(r1, 0x1, 0x1c, 0x0, &(0x7f0000000100)=0x2000)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x3)
recvmsg(r2, &(0x7f0000001a40)={0x0, 0x0, 0x0}, 0x2)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-getsockopt$sock_buf-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap-syz_init_net_socket$bt_l2cap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
getsockopt$sock_buf(r1, 0x1, 0x1c, 0x0, &(0x7f0000000100)=0x2000)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)
syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x3)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-getsockopt$sock_buf-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
getsockopt$sock_buf(r1, 0x1, 0x1c, 0x0, &(0x7f0000000100)=0x2000)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-getsockopt$sock_buf-ioctl$DRM_IOCTL_MODE_CREATE_DUMB
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
getsockopt$sock_buf(r1, 0x1, 0x1c, 0x0, &(0x7f0000000100)=0x2000)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})

program did not crash
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-getsockopt$sock_buf-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
getsockopt$sock_buf(r1, 0x1, 0x1c, 0x0, &(0x7f0000000100)=0x2000)
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)

program did not crash
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-connect$l2tp6-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
connect$l2tp6(r1, &(0x7f0000000180)={0xa, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x3f}, 0x6, 0x4}, 0x20)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-bind$l2tp6-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
r1 = socket$l2tp6(0xa, 0x2, 0x73)
bind$l2tp6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty, 0x0, 0xfffffffd}, 0x20)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-socket$l2tp6-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
socket$l2tp6(0xa, 0x2, 0x73)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-openat$rtc-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
openat$rtc(0xffffffffffffff9c, &(0x7f00000001c0), 0x6400, 0x0)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {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$DRM_IOCTL_MODE_CREATE_DUMB-mmap
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(0xffffffffffffffff, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, 0xffffffffffffffff, 0x100000000)

program did not crash
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(0x0, 0x0, 0x0)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)

program did not crash
testing program (duration=46.059180889s, {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}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, 0x0)
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)

program did not crash
extracting C reproducer
testing compiled C program (duration=46.059180889s, {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}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
simplifying C reproducer
testing compiled C program (duration=46.059180889s, {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}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing compiled C program (duration=46.059180889s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing compiled C program (duration=46.059180889s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing compiled C program (duration=46.059180889s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing compiled C program (duration=46.059180889s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing compiled C program (duration=46.059180889s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing compiled C program (duration=46.059180889s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
testing program (duration=46.059180889s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
validation run: crashed=true
testing program (duration=46.059180889s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
validation run: crashed=true
testing program (duration=46.059180889s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$dri-ioctl$DRM_IOCTL_MODE_CREATE_DUMB-mmap
detailed listing:
executing program 0:
r0 = syz_open_dev$dri(&(0x7f0000000000), 0x0, 0x0)
ioctl$DRM_IOCTL_MODE_CREATE_DUMB(r0, 0xc02064b2, &(0x7f0000000040)={0x7, 0x6576, 0xd})
mmap(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x4, 0x11, r0, 0x100000000)

program crashed: KASAN: slab-out-of-bounds Read in change_page_attr_set_clr
validation run: crashed=true
reproducing took 47m26.361299157s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-out-of-bounds in __cpa_addr arch/x86/mm/pat/set_memory.c:309 [inline]
BUG: KASAN: slab-out-of-bounds in cpa_flush arch/x86/mm/pat/set_memory.c:449 [inline]
BUG: KASAN: slab-out-of-bounds in change_page_attr_set_clr+0x625/0xfc0 arch/x86/mm/pat/set_memory.c:2115
Read of size 8 at addr ffff888078a1f248 by task syz.0.17/6038

CPU: 0 UID: 0 PID: 6038 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xca/0x240 mm/kasan/report.c:482
 kasan_report+0x118/0x150 mm/kasan/report.c:595
 __cpa_addr arch/x86/mm/pat/set_memory.c:309 [inline]
 cpa_flush arch/x86/mm/pat/set_memory.c:449 [inline]
 change_page_attr_set_clr+0x625/0xfc0 arch/x86/mm/pat/set_memory.c:2115
 cpa_set_pages_array arch/x86/mm/pat/set_memory.c:2137 [inline]
 _set_pages_array+0x145/0x270 arch/x86/mm/pat/set_memory.c:2521
 drm_gem_shmem_get_pages_locked+0x2d0/0x440 drivers/gpu/drm/drm_gem_shmem_helper.c:214
 drm_gem_shmem_mmap+0x193/0x460 drivers/gpu/drm/drm_gem_shmem_helper.c:646
 drm_gem_mmap_obj+0x18a/0x4e0 drivers/gpu/drm/drm_gem.c:1167
 drm_gem_mmap+0x384/0x640 drivers/gpu/drm/drm_gem.c:1245
 vfs_mmap include/linux/fs.h:2281 [inline]
 mmap_file mm/internal.h:167 [inline]
 __mmap_new_file_vma mm/vma.c:2413 [inline]
 __mmap_new_vma mm/vma.c:2476 [inline]
 __mmap_region mm/vma.c:2669 [inline]
 mmap_region+0x18ab/0x20c0 mm/vma.c:2739
 do_mmap+0xc45/0x10d0 mm/mmap.c:558
 vm_mmap_pgoff+0x2a6/0x4d0 mm/util.c:580
 ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:604
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fde3d78ebe9
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:00007ffc289e4048 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fde3d9c5fa0 RCX: 00007fde3d78ebe9
RDX: 0000000000000004 RSI: 0000000000004000 RDI: 0000200000001000
RBP: 00007fde3d811e19 R08: 0000000000000003 R09: 0000000100000000
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fde3d9c5fa0 R14: 00007fde3d9c5fa0 R15: 0000000000000006
 </TASK>

Allocated by task 6038:
 kasan_save_stack mm/kasan/common.c:56 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
 poison_kmalloc_redzone mm/kasan/common.c:397 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:414
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:5366 [inline]
 __kvmalloc_node_noprof+0x5cd/0x910 mm/slub.c:6527
 kvmalloc_array_node_noprof include/linux/slab.h:1118 [inline]
 drm_gem_get_pages+0x166/0xa20 drivers/gpu/drm/drm_gem.c:647
 drm_gem_shmem_get_pages_locked+0x201/0x440 drivers/gpu/drm/drm_gem_shmem_helper.c:200
 drm_gem_shmem_mmap+0x193/0x460 drivers/gpu/drm/drm_gem_shmem_helper.c:646
 drm_gem_mmap_obj+0x18a/0x4e0 drivers/gpu/drm/drm_gem.c:1167
 drm_gem_mmap+0x384/0x640 drivers/gpu/drm/drm_gem.c:1245
 vfs_mmap include/linux/fs.h:2281 [inline]
 mmap_file mm/internal.h:167 [inline]
 __mmap_new_file_vma mm/vma.c:2413 [inline]
 __mmap_new_vma mm/vma.c:2476 [inline]
 __mmap_region mm/vma.c:2669 [inline]
 mmap_region+0x18ab/0x20c0 mm/vma.c:2739
 do_mmap+0xc45/0x10d0 mm/mmap.c:558
 vm_mmap_pgoff+0x2a6/0x4d0 mm/util.c:580
 ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:604
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888078a1f000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 0 bytes to the right of
 allocated 584-byte region [ffff888078a1f000, ffff888078a1f248)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x78a18
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801a841dc0 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801a841dc0 dead000000000122 0000000000000000
head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea0001e28601 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 12, tgid 12 (kworker/u8:0), ts 107430042868, free_ts 107379785224
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3857
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5147
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416
 alloc_slab_page mm/slub.c:2996 [inline]
 allocate_slab+0x8a/0x330 mm/slub.c:3164
 new_slab mm/slub.c:3218 [inline]
 ___slab_alloc+0xbd1/0x13f0 mm/slub.c:4420
 __slab_alloc+0x55/0xa0 mm/slub.c:4511
 __slab_alloc_node mm/slub.c:4586 [inline]
 slab_alloc_node mm/slub.c:4996 [inline]
 __do_kmalloc_node mm/slub.c:5365 [inline]
 __kmalloc_noprof+0x471/0x7f0 mm/slub.c:5378
 kmalloc_noprof include/linux/slab.h:960 [inline]
 kzalloc_noprof include/linux/slab.h:1090 [inline]
 neigh_alloc net/core/neighbour.c:522 [inline]
 ___neigh_create+0x6d5/0x2260 net/core/neighbour.c:656
 ip6_finish_output2+0x1175/0x1480 net/ipv6/ip6_output.c:128
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x340/0x550 net/ipv6/ip6_output.c:247
 NF_HOOK include/linux/netfilter.h:318 [inline]
 ndisc_send_skb+0xbce/0x1510 net/ipv6/ndisc.c:512
 ndisc_send_ns+0xcb/0x150 net/ipv6/ndisc.c:670
 addrconf_dad_work+0xaae/0x14b0 net/ipv6/addrconf.c:4282
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
page last free pid 6036 tgid 6036 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2894
 discard_slab mm/slub.c:3262 [inline]
 __put_partials+0x146/0x170 mm/slub.c:3727
 put_cpu_partial+0x17c/0x250 mm/slub.c:3802
 __slab_free+0x2b9/0x390 mm/slub.c:5555
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:349
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4710 [inline]
 slab_alloc_node mm/slub.c:5008 [inline]
 kmem_cache_alloc_noprof+0x367/0x6e0 mm/slub.c:5015
 getname_flags+0xb8/0x540 fs/namei.c:146
 getname include/linux/fs.h:2904 [inline]
 __do_sys_unlink fs/namei.c:4696 [inline]
 __se_sys_unlink fs/namei.c:4694 [inline]
 __x64_sys_unlink+0x3a/0x50 fs/namei.c:4694
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888078a1f100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888078a1f180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888078a1f200: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc
                                              ^
 ffff888078a1f280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888078a1f300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-out-of-bounds in __cpa_addr arch/x86/mm/pat/set_memory.c:309 [inline]
BUG: KASAN: slab-out-of-bounds in cpa_flush arch/x86/mm/pat/set_memory.c:449 [inline]
BUG: KASAN: slab-out-of-bounds in change_page_attr_set_clr+0x625/0xfc0 arch/x86/mm/pat/set_memory.c:2115
Read of size 8 at addr ffff888078a1f248 by task syz.0.17/6038

CPU: 0 UID: 0 PID: 6038 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xca/0x240 mm/kasan/report.c:482
 kasan_report+0x118/0x150 mm/kasan/report.c:595
 __cpa_addr arch/x86/mm/pat/set_memory.c:309 [inline]
 cpa_flush arch/x86/mm/pat/set_memory.c:449 [inline]
 change_page_attr_set_clr+0x625/0xfc0 arch/x86/mm/pat/set_memory.c:2115
 cpa_set_pages_array arch/x86/mm/pat/set_memory.c:2137 [inline]
 _set_pages_array+0x145/0x270 arch/x86/mm/pat/set_memory.c:2521
 drm_gem_shmem_get_pages_locked+0x2d0/0x440 drivers/gpu/drm/drm_gem_shmem_helper.c:214
 drm_gem_shmem_mmap+0x193/0x460 drivers/gpu/drm/drm_gem_shmem_helper.c:646
 drm_gem_mmap_obj+0x18a/0x4e0 drivers/gpu/drm/drm_gem.c:1167
 drm_gem_mmap+0x384/0x640 drivers/gpu/drm/drm_gem.c:1245
 vfs_mmap include/linux/fs.h:2281 [inline]
 mmap_file mm/internal.h:167 [inline]
 __mmap_new_file_vma mm/vma.c:2413 [inline]
 __mmap_new_vma mm/vma.c:2476 [inline]
 __mmap_region mm/vma.c:2669 [inline]
 mmap_region+0x18ab/0x20c0 mm/vma.c:2739
 do_mmap+0xc45/0x10d0 mm/mmap.c:558
 vm_mmap_pgoff+0x2a6/0x4d0 mm/util.c:580
 ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:604
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fde3d78ebe9
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:00007ffc289e4048 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fde3d9c5fa0 RCX: 00007fde3d78ebe9
RDX: 0000000000000004 RSI: 0000000000004000 RDI: 0000200000001000
RBP: 00007fde3d811e19 R08: 0000000000000003 R09: 0000000100000000
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fde3d9c5fa0 R14: 00007fde3d9c5fa0 R15: 0000000000000006
 </TASK>

Allocated by task 6038:
 kasan_save_stack mm/kasan/common.c:56 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
 poison_kmalloc_redzone mm/kasan/common.c:397 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:414
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:5366 [inline]
 __kvmalloc_node_noprof+0x5cd/0x910 mm/slub.c:6527
 kvmalloc_array_node_noprof include/linux/slab.h:1118 [inline]
 drm_gem_get_pages+0x166/0xa20 drivers/gpu/drm/drm_gem.c:647
 drm_gem_shmem_get_pages_locked+0x201/0x440 drivers/gpu/drm/drm_gem_shmem_helper.c:200
 drm_gem_shmem_mmap+0x193/0x460 drivers/gpu/drm/drm_gem_shmem_helper.c:646
 drm_gem_mmap_obj+0x18a/0x4e0 drivers/gpu/drm/drm_gem.c:1167
 drm_gem_mmap+0x384/0x640 drivers/gpu/drm/drm_gem.c:1245
 vfs_mmap include/linux/fs.h:2281 [inline]
 mmap_file mm/internal.h:167 [inline]
 __mmap_new_file_vma mm/vma.c:2413 [inline]
 __mmap_new_vma mm/vma.c:2476 [inline]
 __mmap_region mm/vma.c:2669 [inline]
 mmap_region+0x18ab/0x20c0 mm/vma.c:2739
 do_mmap+0xc45/0x10d0 mm/mmap.c:558
 vm_mmap_pgoff+0x2a6/0x4d0 mm/util.c:580
 ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:604
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888078a1f000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 0 bytes to the right of
 allocated 584-byte region [ffff888078a1f000, ffff888078a1f248)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x78a18
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801a841dc0 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801a841dc0 dead000000000122 0000000000000000
head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea0001e28601 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 12, tgid 12 (kworker/u8:0), ts 107430042868, free_ts 107379785224
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3857
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5147
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416
 alloc_slab_page mm/slub.c:2996 [inline]
 allocate_slab+0x8a/0x330 mm/slub.c:3164
 new_slab mm/slub.c:3218 [inline]
 ___slab_alloc+0xbd1/0x13f0 mm/slub.c:4420
 __slab_alloc+0x55/0xa0 mm/slub.c:4511
 __slab_alloc_node mm/slub.c:4586 [inline]
 slab_alloc_node mm/slub.c:4996 [inline]
 __do_kmalloc_node mm/slub.c:5365 [inline]
 __kmalloc_noprof+0x471/0x7f0 mm/slub.c:5378
 kmalloc_noprof include/linux/slab.h:960 [inline]
 kzalloc_noprof include/linux/slab.h:1090 [inline]
 neigh_alloc net/core/neighbour.c:522 [inline]
 ___neigh_create+0x6d5/0x2260 net/core/neighbour.c:656
 ip6_finish_output2+0x1175/0x1480 net/ipv6/ip6_output.c:128
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x340/0x550 net/ipv6/ip6_output.c:247
 NF_HOOK include/linux/netfilter.h:318 [inline]
 ndisc_send_skb+0xbce/0x1510 net/ipv6/ndisc.c:512
 ndisc_send_ns+0xcb/0x150 net/ipv6/ndisc.c:670
 addrconf_dad_work+0xaae/0x14b0 net/ipv6/addrconf.c:4282
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
page last free pid 6036 tgid 6036 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2894
 discard_slab mm/slub.c:3262 [inline]
 __put_partials+0x146/0x170 mm/slub.c:3727
 put_cpu_partial+0x17c/0x250 mm/slub.c:3802
 __slab_free+0x2b9/0x390 mm/slub.c:5555
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:349
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4710 [inline]
 slab_alloc_node mm/slub.c:5008 [inline]
 kmem_cache_alloc_noprof+0x367/0x6e0 mm/slub.c:5015
 getname_flags+0xb8/0x540 fs/namei.c:146
 getname include/linux/fs.h:2904 [inline]
 __do_sys_unlink fs/namei.c:4696 [inline]
 __se_sys_unlink fs/namei.c:4694 [inline]
 __x64_sys_unlink+0x3a/0x50 fs/namei.c:4694
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888078a1f100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888078a1f180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888078a1f200: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc
                                              ^
 ffff888078a1f280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888078a1f300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================