Extracting prog: 25m7.967116251s Minimizing prog: 1h26m41.622918753s Simplifying prog options: 0s Extracting C: 1m37.937451626s Simplifying C: 30m58.297873581s extracting reproducer from 73 programs testing a last program of every proc single: executing 23 programs separately with timeout 6m0s testing program (duration=6m0s, {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}}): prlimit64-sched_setscheduler-getpgrp-prctl$PR_SCHED_CORE-getpid-sched_setscheduler-mmap-syz_clone-prctl$PR_SCHED_CORE-syz_open_dev$MSR-read$msr-sched_setaffinity-openat$cgroup_ro-syz_emit_ethernet-mount_setattr-sendmsg$inet-syz_open_procfs-getsockopt$inet_mreqn-read$FUSE detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) getpgrp(0x0) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) r0 = getpid() sched_setscheduler(r0, 0x2, &(0x7f0000000000)=0x6) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x1b5cb000) r1 = syz_clone(0x8000, 0x0, 0xfffffffffffffe7e, 0x0, 0x0, 0x0) prctl$PR_SCHED_CORE(0x3e, 0x1, r1, 0x1, 0x0) r2 = syz_open_dev$MSR(&(0x7f00000001c0), 0x0, 0x0) read$msr(r2, &(0x7f0000019680)=""/102392, 0x18ff8) sched_setaffinity(r1, 0x8, &(0x7f0000000080)=0x7) openat$cgroup_ro(0xffffffffffffff9c, 0x0, 0x275a, 0x0) syz_emit_ethernet(0xbe, 0x0, 0x0) mount_setattr(0xffffffffffffffff, 0x0, 0x8000, &(0x7f0000001dc0)={0x0, 0x0, 0x180000}, 0x20) sendmsg$inet(0xffffffffffffffff, 0x0, 0x0) r3 = syz_open_procfs(0x0, &(0x7f0000000180)='smaps_rollup\x00') getsockopt$inet_mreqn(0xffffffffffffffff, 0x0, 0x24, 0x0, 0x0) read$FUSE(r3, &(0x7f0000004440)={0x2020}, 0x2020) program did not crash testing program (duration=6m0s, {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_init_net_socket$bt_hci-bind$bt_hci-write$binfmt_misc detailed listing: executing program 0: r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1) bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0xffff, 0x2}, 0x6) write$binfmt_misc(r0, &(0x7f0000000000), 0x6) program did not crash testing program (duration=6m0s, {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}}): socket$inet6_tcp-getsockopt$sock_linger-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-prctl$PR_SCHED_CORE-sched_setattr-socket$netlink-writev-setsockopt$SO_ATTACH_FILTER-socketpair$tipc-sendmmsg$inet detailed listing: executing program 0: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) getsockopt$sock_linger(r0, 0x1, 0xd, 0x0, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000340)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r1, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r2, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r1, &(0x7f00000000c0), 0x10106, 0x2, 0x0) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) sched_setattr(0x0, 0x0, 0x0) r3 = socket$netlink(0x10, 0x3, 0x15) writev(r3, &(0x7f0000000300)=[{&(0x7f00000001c0)="390000001300034700bb5be1c3e4feff06000000010000004500000025000000190004000400ad000d00000000000006040000000000f93132", 0x39}], 0x1) setsockopt$SO_ATTACH_FILTER(0xffffffffffffffff, 0x1, 0x1a, 0x0, 0x0) socketpair$tipc(0x1e, 0x2, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmmsg$inet(r4, &(0x7f0000001540)=[{{0x0, 0xfffffffffffffda1, 0x0}}], 0x40001b6, 0x0) program did not crash testing program (duration=6m0s, {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_dev$ttys-syz_open_dev$ptys-ioctl$TIOCVHANGUP-ioctl$TCSETSF detailed listing: executing program 0: r0 = syz_open_dev$ttys(0xc, 0x2, 0x0) r1 = syz_open_dev$ptys(0xc, 0x3, 0x0) ioctl$TIOCVHANGUP(r1, 0x5437, 0x0) ioctl$TCSETSF(r0, 0x5404, &(0x7f0000000040)={0x8, 0x800008, 0xffffff02, 0x38000, 0x26, "1839db8d79beaf8fa3015ae9ae6901313cf366"}) program did not crash testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-mkdirat-syz_usb_connect-syz_open_dev$tty1-ioctl$KDGETKEYCODE-timerfd_gettime-open-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r1, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0xe) syz_usb_connect(0x0, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="12010000d5e9bd40eb030200c0ba050000010902115c01000000000904000001b504b10009"], 0x0) r2 = syz_open_dev$tty1(0xc, 0x4, 0x1) ioctl$KDGETKEYCODE(r2, 0x4b4c, &(0x7f0000000180)={0x800009, 0x10006}) timerfd_gettime(r0, &(0x7f00000001c0)) open(&(0x7f0000000280)='.\x00', 0x0, 0x0) mmap(&(0x7f0000000000/0xfbe000)=nil, 0xfbe000, 0x2, 0x31, 0xffffffffffffffff, 0x0) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open single: successfully extracted reproducer found reproducer with 23 syscalls minimizing guilty program testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-mkdirat-syz_usb_connect-syz_open_dev$tty1-ioctl$KDGETKEYCODE-timerfd_gettime-open-mmap detailed listing: executing program 0: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r1, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0xe) syz_usb_connect(0x0, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="12010000d5e9bd40eb030200c0ba050000010902115c01000000000904000001b504b10009"], 0x0) r2 = syz_open_dev$tty1(0xc, 0x4, 0x1) ioctl$KDGETKEYCODE(r2, 0x4b4c, &(0x7f0000000180)={0x800009, 0x10006}) timerfd_gettime(r0, &(0x7f00000001c0)) open(&(0x7f0000000280)='.\x00', 0x0, 0x0) mmap(&(0x7f0000000000/0xfbe000)=nil, 0xfbe000, 0x2, 0x31, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-mkdirat-syz_usb_connect-syz_open_dev$tty1-ioctl$KDGETKEYCODE-timerfd_gettime-open-syz_open_dev$dvb_frontend detailed listing: executing program 0: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r1, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0xe) syz_usb_connect(0x0, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="12010000d5e9bd40eb030200c0ba050000010902115c01000000000904000001b504b10009"], 0x0) r2 = syz_open_dev$tty1(0xc, 0x4, 0x1) ioctl$KDGETKEYCODE(r2, 0x4b4c, &(0x7f0000000180)={0x800009, 0x10006}) timerfd_gettime(r0, &(0x7f00000001c0)) open(&(0x7f0000000280)='.\x00', 0x0, 0x0) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-mkdirat-syz_usb_connect-syz_open_dev$tty1-ioctl$KDGETKEYCODE-timerfd_gettime-syz_open_dev$dvb_frontend detailed listing: executing program 0: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r1, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0xe) syz_usb_connect(0x0, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="12010000d5e9bd40eb030200c0ba050000010902115c01000000000904000001b504b10009"], 0x0) r2 = syz_open_dev$tty1(0xc, 0x4, 0x1) ioctl$KDGETKEYCODE(r2, 0x4b4c, &(0x7f0000000180)={0x800009, 0x10006}) timerfd_gettime(r0, &(0x7f00000001c0)) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-mkdirat-syz_usb_connect-syz_open_dev$tty1-ioctl$KDGETKEYCODE-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0xe) syz_usb_connect(0x0, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="12010000d5e9bd40eb030200c0ba050000010902115c01000000000904000001b504b10009"], 0x0) r1 = syz_open_dev$tty1(0xc, 0x4, 0x1) ioctl$KDGETKEYCODE(r1, 0x4b4c, &(0x7f0000000180)={0x800009, 0x10006}) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-mkdirat-syz_usb_connect-syz_open_dev$tty1-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0xe) syz_usb_connect(0x0, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="12010000d5e9bd40eb030200c0ba050000010902115c01000000000904000001b504b10009"], 0x0) syz_open_dev$tty1(0xc, 0x4, 0x1) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-mkdirat-syz_usb_connect-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0xe) syz_usb_connect(0x0, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="12010000d5e9bd40eb030200c0ba050000010902115c01000000000904000001b504b10009"], 0x0) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-mkdirat-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0xe) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program did not crash testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-fcntl$lock-mprotect-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program did not crash testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-fcntl$lock-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program did not crash testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-timer_create-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program did not crash testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-mount-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000480)='addr=127.0.0.1,vers=2,proto=udp\x00') fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(0x0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program did not crash testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x2, &(0x7f0000000540)='addr=127.0.0.1E\xa7T.8\x13.m83\xa1&\xed,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=udp\x10\xc5\xec^\x92|\x0e\r\a\xb3\fNe\xfbBo^\xaf\xf7+\xe7I.A\xfdg\xec\xb5\t\xa3+\xd9c\x803\x93\"a\xd1\x02_\xa8#\xec\xe8\xda\xf5\xe4Yr\x8b\xac\xc0\xd0\xf1Y\xa7\xd4\x95\x90\xf7\xd6') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) mount(&(0x7f0000000300)=@filename='127.0.0.1:/test\x00', &(0x7f0000000000)='./mnt\x00', &(0x7f0000000340)='nfs\x00', 0x0, &(0x7f0000000380)='addr=127.0.0.1,port=2049,proto=tcp,vers=3,mountport=2049,mountproto=tcp\x00') timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./rpc_pipe\x00', &(0x7f0000000240)='rpc_pipefs\x00', 0x0, 0x0) timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-mount-timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-mkdirat-timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./rpc_pipe\x00', 0x1ff) timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-mkdirat-timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-mkdirat-timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x1ff) timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-iopl-timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) iopl(0x3) timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): socket$inet6_tcp-timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: timer_create(0x0, 0x0, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program did not crash testing program (duration=6m0s, {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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, 0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(0x0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program did not crash testing program (duration=6m0s, {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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, 0x0) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program did not crash testing program (duration=6m0s, {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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, 0x0, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program did not crash testing program (duration=6m0s, {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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(0x0, 0x0, 0x40002) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open simplifying C reproducer testing compiled C program (duration=6m0s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false 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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false 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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false 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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false 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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false 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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false 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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false 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}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend program crashed: KASAN: use-after-free Read in dvb_device_open testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): timer_create-fcntl$lock-mprotect-timer_settime-mmap-syz_open_dev$dvb_frontend detailed listing: executing program 0: timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=0x0) fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10001, 0x5}) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0) mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000) syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002) program crashed: KASAN: use-after-free Read in dvb_device_open validation run: crashed=true reproducing took 2h28m12.276505035s repro crashed as (corrupted=false): ================================================================== BUG: KASAN: use-after-free in dvb_device_open+0xc5/0x360 drivers/media/dvb-core/dvbdev.c:109 Read of size 8 at addr ffff88814b85b818 by task syz.0.19/4468 CPU: 0 PID: 4468 Comm: syz.0.19 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 print_address_description+0x60/0x2d0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0xdf/0x130 mm/kasan/report.c:451 dvb_device_open+0xc5/0x360 drivers/media/dvb-core/dvbdev.c:109 chrdev_open+0x585/0x5f0 fs/char_dev.c:414 do_dentry_open+0x7f7/0xf90 fs/open.c:826 do_open fs/namei.c:3616 [inline] path_openat+0x2718/0x2fb0 fs/namei.c:3750 do_filp_open+0x1df/0x400 fs/namei.c:3777 do_sys_openat2+0x14b/0x500 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1282 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fb4b925790e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffd22c56b18 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000555571a94500 RCX: 00007fb4b925790e RDX: 0000000000040002 RSI: 00007ffd22c56bf0 RDI: ffffffffffffff9c RBP: 00007ffd22c56bf0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007fb4b951efac R14: 00007fb4b951efa0 R15: 00007fb4b951efa0 Allocated by task 1: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc mm/kasan/common.c:513 [inline] __kasan_kmalloc+0xaf/0xe0 mm/kasan/common.c:522 kmalloc include/linux/slab.h:607 [inline] kzalloc include/linux/slab.h:738 [inline] dvb_register_device+0x300/0x1dc0 drivers/media/dvb-core/dvbdev.c:488 dvb_register_frontend+0x629/0x900 drivers/media/dvb-core/dvb_frontend.c:3034 vidtv_bridge_dvb_init drivers/media/test-drivers/vidtv/vidtv_bridge.c:438 [inline] vidtv_bridge_probe+0x9c1/0xf30 drivers/media/test-drivers/vidtv/vidtv_bridge.c:510 platform_probe+0x137/0x1c0 drivers/base/platform.c:1391 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x276/0xc70 drivers/base/dd.c:595 __driver_probe_device+0x1f5/0x390 drivers/base/dd.c:775 driver_probe_device+0x4f/0x420 drivers/base/dd.c:805 __driver_attach+0x45d/0x660 drivers/base/dd.c:1184 bus_for_each_dev+0x182/0x1f0 drivers/base/bus.c:303 bus_add_driver+0x324/0x5d0 drivers/base/bus.c:620 driver_register+0x32d/0x430 drivers/base/driver.c:240 vidtv_bridge_init+0x39/0x70 drivers/media/test-drivers/vidtv/vidtv_bridge.c:602 do_one_initcall+0x272/0x730 init/main.c:1315 do_initcall_level+0x13d/0x1f0 init/main.c:1388 do_initcalls+0x4b/0x90 init/main.c:1404 kernel_init_freeable+0x3d5/0x560 init/main.c:1628 kernel_init+0x19/0x1b0 init/main.c:1519 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Freed by task 4465: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1710 [inline] slab_free_freelist_hook+0xec/0x170 mm/slub.c:1736 slab_free mm/slub.c:3504 [inline] kfree+0xef/0x2a0 mm/slub.c:4564 dvb_free_device drivers/media/dvb-core/dvbdev.c:635 [inline] kref_put include/linux/kref.h:65 [inline] dvb_device_put drivers/media/dvb-core/dvbdev.c:650 [inline] dvb_device_open+0x2d2/0x360 drivers/media/dvb-core/dvbdev.c:123 chrdev_open+0x585/0x5f0 fs/char_dev.c:414 do_dentry_open+0x7f7/0xf90 fs/open.c:826 do_open fs/namei.c:3616 [inline] path_openat+0x2718/0x2fb0 fs/namei.c:3750 do_filp_open+0x1df/0x400 fs/namei.c:3777 do_sys_openat2+0x14b/0x500 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1282 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff88814b85b800 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 24 bytes inside of 256-byte region [ffff88814b85b800, ffff88814b85b900) The buggy address belongs to the page: page:ffffea00052e1680 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88814b85b400 pfn:0x14b85a head:ffffea00052e1680 order:1 compound_mapcount:0 flags: 0x57ff00000010200(slab|head|node=1|zone=2|lastcpupid=0x7ff) raw: 057ff00000010200 ffffea00050ffa08 ffff888140000708 ffff888016c41b40 raw: ffff88814b85b400 000000000010000f 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, ts 18433407668, free_ts 0 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x24f6/0x2670 mm/page_alloc.c:4192 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501 alloc_page_interleave+0x24/0x1e0 mm/mempolicy.c:2031 alloc_slab_page mm/slub.c:1780 [inline] allocate_slab mm/slub.c:1917 [inline] new_slab+0xc0/0x4b0 mm/slub.c:1980 ___slab_alloc+0x807/0xdd0 mm/slub.c:3013 __slab_alloc mm/slub.c:3100 [inline] slab_alloc_node mm/slub.c:3191 [inline] __kmalloc_node+0x142/0x3a0 mm/slub.c:4456 kmalloc_node include/linux/slab.h:630 [inline] kvmalloc_node+0x84/0x130 mm/util.c:619 kvmalloc include/linux/mm.h:816 [inline] kvzalloc include/linux/mm.h:824 [inline] v4l2_ctrl_new+0x70f/0x1310 drivers/media/v4l2-core/v4l2-ctrls-core.c:1306 v4l2_ctrl_new_std+0x247/0x300 drivers/media/v4l2-core/v4l2-ctrls-core.c:1429 handler_new_ref+0x14f/0x8d0 drivers/media/v4l2-core/v4l2-ctrls-core.c:1098 v4l2_ctrl_add_handler+0x197/0x280 drivers/media/v4l2-core/v4l2-ctrls-core.c:1573 vivid_create_controls+0x2515/0x3380 drivers/media/test-drivers/vivid/vivid-ctrls.c:1884 vivid_create_instance drivers/media/test-drivers/vivid/vivid-core.c:1860 [inline] vivid_probe+0x39ff/0x6240 drivers/media/test-drivers/vivid/vivid-core.c:2031 platform_probe+0x137/0x1c0 drivers/base/platform.c:1391 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x276/0xc70 drivers/base/dd.c:595 __driver_probe_device+0x1f5/0x390 drivers/base/dd.c:775 page_owner free stack trace missing Memory state around the buggy address: ffff88814b85b700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88814b85b780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88814b85b800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88814b85b880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88814b85b900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== final repro crashed as (corrupted=false): ================================================================== BUG: KASAN: use-after-free in dvb_device_open+0xc5/0x360 drivers/media/dvb-core/dvbdev.c:109 Read of size 8 at addr ffff88814b85b818 by task syz.0.19/4468 CPU: 0 PID: 4468 Comm: syz.0.19 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 print_address_description+0x60/0x2d0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0xdf/0x130 mm/kasan/report.c:451 dvb_device_open+0xc5/0x360 drivers/media/dvb-core/dvbdev.c:109 chrdev_open+0x585/0x5f0 fs/char_dev.c:414 do_dentry_open+0x7f7/0xf90 fs/open.c:826 do_open fs/namei.c:3616 [inline] path_openat+0x2718/0x2fb0 fs/namei.c:3750 do_filp_open+0x1df/0x400 fs/namei.c:3777 do_sys_openat2+0x14b/0x500 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1282 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fb4b925790e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffd22c56b18 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000555571a94500 RCX: 00007fb4b925790e RDX: 0000000000040002 RSI: 00007ffd22c56bf0 RDI: ffffffffffffff9c RBP: 00007ffd22c56bf0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007fb4b951efac R14: 00007fb4b951efa0 R15: 00007fb4b951efa0 Allocated by task 1: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc mm/kasan/common.c:513 [inline] __kasan_kmalloc+0xaf/0xe0 mm/kasan/common.c:522 kmalloc include/linux/slab.h:607 [inline] kzalloc include/linux/slab.h:738 [inline] dvb_register_device+0x300/0x1dc0 drivers/media/dvb-core/dvbdev.c:488 dvb_register_frontend+0x629/0x900 drivers/media/dvb-core/dvb_frontend.c:3034 vidtv_bridge_dvb_init drivers/media/test-drivers/vidtv/vidtv_bridge.c:438 [inline] vidtv_bridge_probe+0x9c1/0xf30 drivers/media/test-drivers/vidtv/vidtv_bridge.c:510 platform_probe+0x137/0x1c0 drivers/base/platform.c:1391 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x276/0xc70 drivers/base/dd.c:595 __driver_probe_device+0x1f5/0x390 drivers/base/dd.c:775 driver_probe_device+0x4f/0x420 drivers/base/dd.c:805 __driver_attach+0x45d/0x660 drivers/base/dd.c:1184 bus_for_each_dev+0x182/0x1f0 drivers/base/bus.c:303 bus_add_driver+0x324/0x5d0 drivers/base/bus.c:620 driver_register+0x32d/0x430 drivers/base/driver.c:240 vidtv_bridge_init+0x39/0x70 drivers/media/test-drivers/vidtv/vidtv_bridge.c:602 do_one_initcall+0x272/0x730 init/main.c:1315 do_initcall_level+0x13d/0x1f0 init/main.c:1388 do_initcalls+0x4b/0x90 init/main.c:1404 kernel_init_freeable+0x3d5/0x560 init/main.c:1628 kernel_init+0x19/0x1b0 init/main.c:1519 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Freed by task 4465: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1710 [inline] slab_free_freelist_hook+0xec/0x170 mm/slub.c:1736 slab_free mm/slub.c:3504 [inline] kfree+0xef/0x2a0 mm/slub.c:4564 dvb_free_device drivers/media/dvb-core/dvbdev.c:635 [inline] kref_put include/linux/kref.h:65 [inline] dvb_device_put drivers/media/dvb-core/dvbdev.c:650 [inline] dvb_device_open+0x2d2/0x360 drivers/media/dvb-core/dvbdev.c:123 chrdev_open+0x585/0x5f0 fs/char_dev.c:414 do_dentry_open+0x7f7/0xf90 fs/open.c:826 do_open fs/namei.c:3616 [inline] path_openat+0x2718/0x2fb0 fs/namei.c:3750 do_filp_open+0x1df/0x400 fs/namei.c:3777 do_sys_openat2+0x14b/0x500 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1282 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff88814b85b800 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 24 bytes inside of 256-byte region [ffff88814b85b800, ffff88814b85b900) The buggy address belongs to the page: page:ffffea00052e1680 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88814b85b400 pfn:0x14b85a head:ffffea00052e1680 order:1 compound_mapcount:0 flags: 0x57ff00000010200(slab|head|node=1|zone=2|lastcpupid=0x7ff) raw: 057ff00000010200 ffffea00050ffa08 ffff888140000708 ffff888016c41b40 raw: ffff88814b85b400 000000000010000f 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, ts 18433407668, free_ts 0 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x24f6/0x2670 mm/page_alloc.c:4192 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501 alloc_page_interleave+0x24/0x1e0 mm/mempolicy.c:2031 alloc_slab_page mm/slub.c:1780 [inline] allocate_slab mm/slub.c:1917 [inline] new_slab+0xc0/0x4b0 mm/slub.c:1980 ___slab_alloc+0x807/0xdd0 mm/slub.c:3013 __slab_alloc mm/slub.c:3100 [inline] slab_alloc_node mm/slub.c:3191 [inline] __kmalloc_node+0x142/0x3a0 mm/slub.c:4456 kmalloc_node include/linux/slab.h:630 [inline] kvmalloc_node+0x84/0x130 mm/util.c:619 kvmalloc include/linux/mm.h:816 [inline] kvzalloc include/linux/mm.h:824 [inline] v4l2_ctrl_new+0x70f/0x1310 drivers/media/v4l2-core/v4l2-ctrls-core.c:1306 v4l2_ctrl_new_std+0x247/0x300 drivers/media/v4l2-core/v4l2-ctrls-core.c:1429 handler_new_ref+0x14f/0x8d0 drivers/media/v4l2-core/v4l2-ctrls-core.c:1098 v4l2_ctrl_add_handler+0x197/0x280 drivers/media/v4l2-core/v4l2-ctrls-core.c:1573 vivid_create_controls+0x2515/0x3380 drivers/media/test-drivers/vivid/vivid-ctrls.c:1884 vivid_create_instance drivers/media/test-drivers/vivid/vivid-core.c:1860 [inline] vivid_probe+0x39ff/0x6240 drivers/media/test-drivers/vivid/vivid-core.c:2031 platform_probe+0x137/0x1c0 drivers/base/platform.c:1391 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x276/0xc70 drivers/base/dd.c:595 __driver_probe_device+0x1f5/0x390 drivers/base/dd.c:775 page_owner free stack trace missing Memory state around the buggy address: ffff88814b85b700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88814b85b780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88814b85b800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88814b85b880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88814b85b900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================