Extracting prog: 8m31.287829822s
Minimizing prog: 42m48.027551343s
Simplifying prog options: 0s
Extracting C: 45.869275437s
Simplifying C: 15m40.188850368s


extracting reproducer from 69 programs
testing a last program of every proc
single: executing 19 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-openat$tun-ioctl$TUNSETIFF-socket-socket$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$netlink-sendmsg$nl_route_sched-socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_route-socket$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-sendmsg$nl_route_sched-syz_genetlink_get_family_id$ethtool-prctl$PR_SCHED_CORE-socketpair$unix-sendmmsg$unix-recvmmsg-bpf$PROG_LOAD-sendmmsg$unix-sched_setattr-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CAP_DISABLE_QUIRKS-ioctl$KVM_CREATE_VCPU-bpf$PROG_LOAD
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="120100007292bd404020305582a80000000109021b0001000000000904000001df7fa9000905", @ANYBLOB="868f54"], 0x0)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101})
r1 = socket(0x400000000010, 0x3, 0x0)
r2 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000100)={'syzkaller0\x00', <r3=>0x0})
sendmsg$nl_route_sched(r1, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000340)=@newqdisc={0x38, 0x24, 0x4ee4e6a52ff56541, 0x70bd2a, 0xffffffff, {0x0, 0x0, 0x0, r3, {0x0, 0xfff1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_skbprio={{0xc}, {0x8, 0x2, 0x7fff}}]}, 0x38}}, 0x0)
r4 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r4, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000140)={&(0x7f00000001c0)=@gettclass={0x24, 0x2a, 0x129, 0x0, 0x0, {0x0, 0x0, 0x0, r3, {0x1, 0x3}, {}, {0xa, 0xfff1}}}, 0x24}}, 0x40004)
r5 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r5, 0x8933, &(0x7f0000000100)={'syzkaller0\x00', <r6=>0x0})
sendmsg$nl_route_sched(r5, &(0x7f0000000000)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000000780)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x4, 0x25dfdbfd, {0x0, 0x0, 0x0, r6, {0x0, 0xb}, {0xffff, 0xffff}, {0xfff2, 0x8}}, [@qdisc_kind_options=@q_netem={{0xa}, {0x1c, 0x2, {{0x3, 0x3, 0x6361, 0x7, 0xffffffff, 0xffffffff}}}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40088c1}, 0x0)
r7 = socket$nl_route(0x10, 0x3, 0x0)
r8 = socket$unix(0x1, 0x1, 0x0)
ioctl$sock_SIOCGIFINDEX(r8, 0x8933, &(0x7f0000000100)={'syzkaller0\x00', <r9=>0x0})
sendmsg$nl_route_sched(r7, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000140)=@newqdisc={0x44, 0x24, 0x4ee4e6a52ff56541, 0x70bd25, 0x3, {0x0, 0x0, 0x0, r9, {0x0, 0xfff1}, {0xffff, 0xffff}, {0x5, 0x8}}, [@qdisc_kind_options=@q_hfsc={{0x9}, {0x14, 0x2, @TCA_HFSC_USC={0x0, 0x3, {0x5, 0x2, 0x6}}}}]}, 0x64}, 0x1, 0x0, 0x0, 0x4000000}, 0x20000880)
sendmsg$nl_route_sched(r7, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000400)=@newqdisc={0x48, 0x28, 0x4ee4e6a52ff56541, 0x4001, 0xffffbddc, {0x0, 0x0, 0x0, r9, {0xffff}, {}, {0x2, 0xc}}, [@qdisc_kind_options=@q_cbq={{0x8}, {0x1c, 0x2, [@TCA_CBS_PARMS={0x18, 0x1, {0x81, '\x00', 0xfffff000, 0x31, 0x3, 0x581}}]}}]}, 0x48}, 0x1, 0x0, 0x0, 0x40098}, 0x0)
syz_genetlink_get_family_id$ethtool(&(0x7f00000003c0), r4)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000080)={<r10=>0xffffffffffffffff, <r11=>0xffffffffffffffff})
sendmmsg$unix(r11, &(0x7f00000bd000), 0x318, 0x0)
recvmmsg(r10, &(0x7f00000000c0), 0x10106, 0x2, 0x0)
bpf$PROG_LOAD(0x5, &(0x7f00000003c0)={0x1, 0x0, 0x0, 0x0, 0x9, 0x0, 0x0, 0x41000, 0x66, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
sendmmsg$unix(0xffffffffffffffff, 0x0, 0x0, 0x0)
sched_setattr(0x0, &(0x7f0000000280)={0x38, 0x5, 0x8, 0x8001, 0x0, 0x9, 0x0, 0xfffffe0000000001, 0xfa11, 0xffffffff}, 0x0)
r12 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000340), 0x0, 0x0)
r13 = ioctl$KVM_CREATE_VM(r12, 0xae01, 0x0)
ioctl$KVM_CAP_DISABLE_QUIRKS(r13, 0x4068aea3, &(0x7f0000000200)={0x74, 0x0, 0x10})
ioctl$KVM_CREATE_VCPU(r13, 0xae41, 0x2)
bpf$PROG_LOAD(0x5, &(0x7f00000004c0)={0x11, 0x14, 0x0, &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter-syz_usb_control_io$cdc_ncm-syz_usb_control_io$printer-socket$kcm-sendmsg$inet-sendmsg$kcm-openat$misdntimer-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_io_uring_submit-io_uring_enter-syz_usb_control_io$uac1
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
r1 = syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r2=>0x0, &(0x7f00000007c0)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})
io_uring_enter(r1, 0x4d10, 0x2, 0x2, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0)
syz_usb_control_io$printer(r0, 0x0, 0x0)
r4 = socket$kcm(0xa, 0x2, 0x88)
sendmsg$inet(r4, &(0x7f0000000000)={&(0x7f0000001340)={0x2, 0x6, @multicast2}, 0x10, 0x0, 0x0, &(0x7f0000001580)=[@ip_pktinfo={{0x1c, 0x0, 0x8, {0x0, @dev={0xac, 0x14, 0x14, 0x41}, @multicast1}}}], 0x20}, 0x8000)
sendmsg$kcm(r4, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000015c0)=[{&(0x7f0000000080)="38635de68d26fa1b105fad3fe3a9f53ef95c185cb7c7499e6d98d7ec1e3c816b6c3b767d45567e01be2725fba221aabc0100c0569441befb55cce4494bb308ca0540f61b3f41edc2ca780b0ce9cbdbc51a6fc6c0d57929ee537ed3bbb93072e4", 0x60}, {&(0x7f0000000340)="dd5db69463314133856a96a03208c467e9367a0854e707a4afbba3370c96f2675103eaaaf08d1beb7a5735f8adfcc205ca0ea399492b67ea0e25040963dba7febec64af152e1382d87f8ec6081f11a76e1707daa07f80b6fbaf63af8eec79af2b469cb7326ebb57916940773e0a910c9eec0f3bebfe15c90ff1cdfe89919c1f7c8b9093175b4d871a5928cd22cafdc2698c332753a40620cbe51da8cf9e2f4656746682ffd913817693c84e925b8383d0895a688de7eae7c071292dda217f8e9c9b74ec5b5317157fe58b23b1fcf3bcb0081c5d65b40a868632afb1900a8bf76d8e7753ffe7847d3fb61adfb7ec0d6c2d7196edf32cf9a18ec72b4ee790a1c7c84250fc5a3705fb585a40f7ccc3f826b6070512553a56d7050824fd41f4ab32034fa8c2844a1db74131d0d445c3853565acf153fd79d18e75470148d2099f85213240fa73650de009a512c4a2ca63646b01adc7b3f1d812adf87df7d8b003c3a8c46254033ea089f05e117e985f3312184971c3adde02af496047f00bbefdd3fabf1fd09454af629bd43c809d14057772b97443af85102ed550239829f35ec3eb5baa0091c528e9cda79e185012a7c3ac527c4a03e90170e442f8058ac82f58392e4ec50f4c8f74f1aa29d8eabc7f3930319995bca2ff5678d91e7df8a04ab67342b17a74e51978c3a2efb52c0682f232c53732fb5e567e334a45d0d34e21ebc50fe1489ef927cd9fb9667f2e8d52378334b6fad323c474cd3c1257be807b5ffb1b6ef53e47aca6813712c0c8c840a0ab475b9877d108625bfc725d7499d2e6f969cbdd80a4fa825d1204cdaa78f5fb9278c4efefab52399b9cac41058df2d14a367ae3fac80510795752711864f672670064e79283a8eb75aa919237f775a83256f410dc7f8cba54ccbfd2dfc7ef4a84d4e8a4734ac35044fc14c2be5783f153d7589961c307f89e64163ba73b9abcdae3364a70227c148921571cf4d9c1c30a3909bea8bf30a2ea24ca26001bd4ce34485a3ab315159f66bfa8b37a76dbebc4d0d4a0e0fa2a09afa1964148f662a432a66a051e8b15e56dd14baf435b4cd966a958371c0edfcd020b98d82c66d202652f687f2089d0e84ec8e730a09e1bfec30811125dfa49346a485fc444b24d3b680768c4a938de22e920e8b2cb54cfae2f12ab5b700c5e382876dc3a3971f600689047bf0a7a4689497850fc5e5c30ce3df3651f16e5a6aa83dc947904fda4b8e85f58c02e519f1a189e54a475b39709b21fc2f921b03afa2d567ed765cd3ceb5533bae19aae0e0201561581dc6f5d108cd5df5c09712adcf567b0c79d21bbeef2f1af0c9b39d5b5e11c5bfeebab0f43713d37397910ac6c72aaafef7c37ebea1c8c0cb79cbb6e8a033224c5e50dffcf7d4418ee9f5287a163933035c78ffe5e953914842601290f59d339b03497ba5dffdca70bca4764d38d0bf9abb1fb2ef92be2f35c102d8fb4100a0113a05bbf0b20b3e477bbb00ec29268a1d1fd1fd74c306c9dcdb54d40c20d88b658648f68b08e1981ddb9c2b191d5c8e614b94e470273664596a9d67a91826e57af886b5dbb1059d8e6a82247e642aff78f89b083c3f2f4fe4842db6a63e6962452f9805dafc447448717cb0820512b5f1d6cb66432411da84ada3a1296f6afa3f36138a4364511013b8695306b140623b00ad25aef8941b5cf076baac669a1a8b645900306257de599d4904a5f1d439d6453e22d6643e624d9cd220c2217043cd7d6f1d02e3100acd9372965b356b304f", 0x4eb}], 0x2}, 0x0)
openat$misdntimer(0xffffffffffffff9c, &(0x7f0000000180), 0x80100, 0x0)
r5 = syz_io_uring_setup(0x49a, &(0x7f00000000c0)={0x0, 0x79af, 0x3180, 0x2, 0x40024e}, &(0x7f0000000340)=<r6=>0x0, &(0x7f0000000040)=<r7=>0x0)
syz_memcpy_off$IO_URING_METADATA_GENERIC(r6, 0x4, &(0x7f0000000000)=0xffb, 0x0, 0x4)
syz_io_uring_submit(r6, r7, &(0x7f00000001c0)=@IORING_OP_READ=@pass_buffer={0x16, 0x40, 0x4007, @fd_index=0x3, 0x6, 0x0, 0x0, 0x2, 0x1})
io_uring_enter(r5, 0x8000627, 0x4c4, 0x47, 0x0, 0x0)
syz_usb_control_io$uac1(r0, 0x0, &(0x7f0000000440)={0x44, &(0x7f0000000040)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0})

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
single: successfully extracted reproducer
found reproducer with 18 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter-syz_usb_control_io$cdc_ncm-syz_usb_control_io$printer-socket$kcm-sendmsg$inet-sendmsg$kcm-openat$misdntimer-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_io_uring_submit-io_uring_enter
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
r1 = syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r2=>0x0, &(0x7f00000007c0)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})
io_uring_enter(r1, 0x4d10, 0x2, 0x2, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0)
syz_usb_control_io$printer(r0, 0x0, 0x0)
r4 = socket$kcm(0xa, 0x2, 0x88)
sendmsg$inet(r4, &(0x7f0000000000)={&(0x7f0000001340)={0x2, 0x6, @multicast2}, 0x10, 0x0, 0x0, &(0x7f0000001580)=[@ip_pktinfo={{0x1c, 0x0, 0x8, {0x0, @dev={0xac, 0x14, 0x14, 0x41}, @multicast1}}}], 0x20}, 0x8000)
sendmsg$kcm(r4, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000015c0)=[{&(0x7f0000000080)="38635de68d26fa1b105fad3fe3a9f53ef95c185cb7c7499e6d98d7ec1e3c816b6c3b767d45567e01be2725fba221aabc0100c0569441befb55cce4494bb308ca0540f61b3f41edc2ca780b0ce9cbdbc51a6fc6c0d57929ee537ed3bbb93072e4", 0x60}, {&(0x7f0000000340)="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", 0x4eb}], 0x2}, 0x0)
openat$misdntimer(0xffffffffffffff9c, &(0x7f0000000180), 0x80100, 0x0)
r5 = syz_io_uring_setup(0x49a, &(0x7f00000000c0)={0x0, 0x79af, 0x3180, 0x2, 0x40024e}, &(0x7f0000000340)=<r6=>0x0, &(0x7f0000000040)=<r7=>0x0)
syz_memcpy_off$IO_URING_METADATA_GENERIC(r6, 0x4, &(0x7f0000000000)=0xffb, 0x0, 0x4)
syz_io_uring_submit(r6, r7, &(0x7f00000001c0)=@IORING_OP_READ=@pass_buffer={0x16, 0x40, 0x4007, @fd_index=0x3, 0x6, 0x0, 0x0, 0x2, 0x1})
io_uring_enter(r5, 0x8000627, 0x4c4, 0x47, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter-syz_usb_control_io$cdc_ncm-syz_usb_control_io$printer-socket$kcm-sendmsg$inet-sendmsg$kcm-openat$misdntimer-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-syz_io_uring_submit
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
r1 = syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r2=>0x0, &(0x7f00000007c0)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})
io_uring_enter(r1, 0x4d10, 0x2, 0x2, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0)
syz_usb_control_io$printer(r0, 0x0, 0x0)
r4 = socket$kcm(0xa, 0x2, 0x88)
sendmsg$inet(r4, &(0x7f0000000000)={&(0x7f0000001340)={0x2, 0x6, @multicast2}, 0x10, 0x0, 0x0, &(0x7f0000001580)=[@ip_pktinfo={{0x1c, 0x0, 0x8, {0x0, @dev={0xac, 0x14, 0x14, 0x41}, @multicast1}}}], 0x20}, 0x8000)
sendmsg$kcm(r4, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000015c0)=[{&(0x7f0000000080)="38635de68d26fa1b105fad3fe3a9f53ef95c185cb7c7499e6d98d7ec1e3c816b6c3b767d45567e01be2725fba221aabc0100c0569441befb55cce4494bb308ca0540f61b3f41edc2ca780b0ce9cbdbc51a6fc6c0d57929ee537ed3bbb93072e4", 0x60}, {&(0x7f0000000340)="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", 0x4eb}], 0x2}, 0x0)
openat$misdntimer(0xffffffffffffff9c, &(0x7f0000000180), 0x80100, 0x0)
syz_io_uring_setup(0x49a, &(0x7f00000000c0)={0x0, 0x79af, 0x3180, 0x2, 0x40024e}, &(0x7f0000000340)=<r5=>0x0, &(0x7f0000000040)=<r6=>0x0)
syz_memcpy_off$IO_URING_METADATA_GENERIC(r5, 0x4, &(0x7f0000000000)=0xffb, 0x0, 0x4)
syz_io_uring_submit(r5, r6, &(0x7f00000001c0)=@IORING_OP_READ=@pass_buffer={0x16, 0x40, 0x4007, @fd_index=0x3, 0x6, 0x0, 0x0, 0x2, 0x1})

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter-syz_usb_control_io$cdc_ncm-syz_usb_control_io$printer-socket$kcm-sendmsg$inet-sendmsg$kcm-openat$misdntimer-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
r1 = syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r2=>0x0, &(0x7f00000007c0)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})
io_uring_enter(r1, 0x4d10, 0x2, 0x2, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0)
syz_usb_control_io$printer(r0, 0x0, 0x0)
r4 = socket$kcm(0xa, 0x2, 0x88)
sendmsg$inet(r4, &(0x7f0000000000)={&(0x7f0000001340)={0x2, 0x6, @multicast2}, 0x10, 0x0, 0x0, &(0x7f0000001580)=[@ip_pktinfo={{0x1c, 0x0, 0x8, {0x0, @dev={0xac, 0x14, 0x14, 0x41}, @multicast1}}}], 0x20}, 0x8000)
sendmsg$kcm(r4, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000015c0)=[{&(0x7f0000000080)="38635de68d26fa1b105fad3fe3a9f53ef95c185cb7c7499e6d98d7ec1e3c816b6c3b767d45567e01be2725fba221aabc0100c0569441befb55cce4494bb308ca0540f61b3f41edc2ca780b0ce9cbdbc51a6fc6c0d57929ee537ed3bbb93072e4", 0x60}, {&(0x7f0000000340)="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", 0x4eb}], 0x2}, 0x0)
openat$misdntimer(0xffffffffffffff9c, &(0x7f0000000180), 0x80100, 0x0)
syz_io_uring_setup(0x49a, &(0x7f00000000c0)={0x0, 0x79af, 0x3180, 0x2, 0x40024e}, &(0x7f0000000340)=<r5=>0x0, &(0x7f0000000040))
syz_memcpy_off$IO_URING_METADATA_GENERIC(r5, 0x4, &(0x7f0000000000)=0xffb, 0x0, 0x4)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter-syz_usb_control_io$cdc_ncm-syz_usb_control_io$printer-socket$kcm-sendmsg$inet-sendmsg$kcm-openat$misdntimer-syz_io_uring_setup
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
r1 = syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r2=>0x0, &(0x7f00000007c0)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})
io_uring_enter(r1, 0x4d10, 0x2, 0x2, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0)
syz_usb_control_io$printer(r0, 0x0, 0x0)
r4 = socket$kcm(0xa, 0x2, 0x88)
sendmsg$inet(r4, &(0x7f0000000000)={&(0x7f0000001340)={0x2, 0x6, @multicast2}, 0x10, 0x0, 0x0, &(0x7f0000001580)=[@ip_pktinfo={{0x1c, 0x0, 0x8, {0x0, @dev={0xac, 0x14, 0x14, 0x41}, @multicast1}}}], 0x20}, 0x8000)
sendmsg$kcm(r4, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000015c0)=[{&(0x7f0000000080)="38635de68d26fa1b105fad3fe3a9f53ef95c185cb7c7499e6d98d7ec1e3c816b6c3b767d45567e01be2725fba221aabc0100c0569441befb55cce4494bb308ca0540f61b3f41edc2ca780b0ce9cbdbc51a6fc6c0d57929ee537ed3bbb93072e4", 0x60}, {&(0x7f0000000340)="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", 0x4eb}], 0x2}, 0x0)
openat$misdntimer(0xffffffffffffff9c, &(0x7f0000000180), 0x80100, 0x0)
syz_io_uring_setup(0x49a, &(0x7f00000000c0)={0x0, 0x79af, 0x3180, 0x2, 0x40024e}, &(0x7f0000000340), &(0x7f0000000040))

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter-syz_usb_control_io$cdc_ncm-syz_usb_control_io$printer-socket$kcm-sendmsg$inet-sendmsg$kcm-openat$misdntimer
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
r1 = syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r2=>0x0, &(0x7f00000007c0)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})
io_uring_enter(r1, 0x4d10, 0x2, 0x2, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0)
syz_usb_control_io$printer(r0, 0x0, 0x0)
r4 = socket$kcm(0xa, 0x2, 0x88)
sendmsg$inet(r4, &(0x7f0000000000)={&(0x7f0000001340)={0x2, 0x6, @multicast2}, 0x10, 0x0, 0x0, &(0x7f0000001580)=[@ip_pktinfo={{0x1c, 0x0, 0x8, {0x0, @dev={0xac, 0x14, 0x14, 0x41}, @multicast1}}}], 0x20}, 0x8000)
sendmsg$kcm(r4, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000015c0)=[{&(0x7f0000000080)="38635de68d26fa1b105fad3fe3a9f53ef95c185cb7c7499e6d98d7ec1e3c816b6c3b767d45567e01be2725fba221aabc0100c0569441befb55cce4494bb308ca0540f61b3f41edc2ca780b0ce9cbdbc51a6fc6c0d57929ee537ed3bbb93072e4", 0x60}, {&(0x7f0000000340)="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", 0x4eb}], 0x2}, 0x0)
openat$misdntimer(0xffffffffffffff9c, &(0x7f0000000180), 0x80100, 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter-syz_usb_control_io$cdc_ncm-syz_usb_control_io$printer-socket$kcm-sendmsg$inet-sendmsg$kcm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
r1 = syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r2=>0x0, &(0x7f00000007c0)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})
io_uring_enter(r1, 0x4d10, 0x2, 0x2, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0)
syz_usb_control_io$printer(r0, 0x0, 0x0)
r4 = socket$kcm(0xa, 0x2, 0x88)
sendmsg$inet(r4, &(0x7f0000000000)={&(0x7f0000001340)={0x2, 0x6, @multicast2}, 0x10, 0x0, 0x0, &(0x7f0000001580)=[@ip_pktinfo={{0x1c, 0x0, 0x8, {0x0, @dev={0xac, 0x14, 0x14, 0x41}, @multicast1}}}], 0x20}, 0x8000)
sendmsg$kcm(r4, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000015c0)=[{&(0x7f0000000080)="38635de68d26fa1b105fad3fe3a9f53ef95c185cb7c7499e6d98d7ec1e3c816b6c3b767d45567e01be2725fba221aabc0100c0569441befb55cce4494bb308ca0540f61b3f41edc2ca780b0ce9cbdbc51a6fc6c0d57929ee537ed3bbb93072e4", 0x60}, {&(0x7f0000000340)="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", 0x4eb}], 0x2}, 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter-syz_usb_control_io$cdc_ncm-syz_usb_control_io$printer-socket$kcm-sendmsg$inet
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
r1 = syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r2=>0x0, &(0x7f00000007c0)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})
io_uring_enter(r1, 0x4d10, 0x2, 0x2, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0)
syz_usb_control_io$printer(r0, 0x0, 0x0)
r4 = socket$kcm(0xa, 0x2, 0x88)
sendmsg$inet(r4, &(0x7f0000000000)={&(0x7f0000001340)={0x2, 0x6, @multicast2}, 0x10, 0x0, 0x0, &(0x7f0000001580)=[@ip_pktinfo={{0x1c, 0x0, 0x8, {0x0, @dev={0xac, 0x14, 0x14, 0x41}, @multicast1}}}], 0x20}, 0x8000)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter-syz_usb_control_io$cdc_ncm-syz_usb_control_io$printer-socket$kcm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
r1 = syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r2=>0x0, &(0x7f00000007c0)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})
io_uring_enter(r1, 0x4d10, 0x2, 0x2, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0)
syz_usb_control_io$printer(r0, 0x0, 0x0)
socket$kcm(0xa, 0x2, 0x88)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter-syz_usb_control_io$cdc_ncm-syz_usb_control_io$printer
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
r1 = syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r2=>0x0, &(0x7f00000007c0)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})
io_uring_enter(r1, 0x4d10, 0x2, 0x2, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0)
syz_usb_control_io$printer(r0, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter-syz_usb_control_io$cdc_ncm
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
r1 = syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r2=>0x0, &(0x7f00000007c0)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})
io_uring_enter(r1, 0x4d10, 0x2, 0x2, 0x0, 0x0)
syz_usb_control_io$cdc_ncm(r0, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit-io_uring_enter
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
r1 = syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r2=>0x0, &(0x7f00000007c0)=<r3=>0x0)
syz_io_uring_submit(r2, r3, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})
io_uring_enter(r1, 0x4d10, 0x2, 0x2, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup-syz_io_uring_submit
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100)=<r1=>0x0, &(0x7f00000007c0)=<r2=>0x0)
syz_io_uring_submit(r1, r2, &(0x7f0000000000)=@IORING_OP_WRITEV={0x2, 0x40, 0x0, @fd_index=0x3, 0x0, &(0x7f0000000440)=[{&(0x7f0000000580)="1a", 0x1}, {0x0, 0x47}], 0x2})

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp-syz_io_uring_setup
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)
syz_io_uring_setup(0x70ca, &(0x7f0000000080)={0x0, 0x0, 0x10100, 0x3, 0x179}, &(0x7f0000000100), &(0x7f00000007c0))

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-openat$dsp
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
openat$dsp(0xffffffffffffff9c, &(0x7f00000003c0), 0x101a02, 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_control_io
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB], 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
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: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_usb_connect
program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)

program crashed: KASAN: slab-use-after-free Read in v4l2_fh_open
validation run: crashed=true
reproducing took 1h12m19.552254106s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in v4l2_fh_init drivers/media/v4l2-core/v4l2-fh.c:25 [inline]
BUG: KASAN: slab-use-after-free in v4l2_fh_open+0xac/0x420 drivers/media/v4l2-core/v4l2-fh.c:64
Read of size 8 at addr ffff88802ab80748 by task v4l_id/6151

CPU: 1 UID: 0 PID: 6151 Comm: v4l_id Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xba/0x230 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 v4l2_fh_init drivers/media/v4l2-core/v4l2-fh.c:25 [inline]
 v4l2_fh_open+0xac/0x420 drivers/media/v4l2-core/v4l2-fh.c:64
 em28xx_v4l2_open+0x157/0x9a0 drivers/media/usb/em28xx/em28xx-video.c:2153
 v4l2_open+0x1bf/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:433
 chrdev_open+0x4cd/0x5e0 fs/char_dev.c:411
 do_dentry_open+0x785/0x14e0 fs/open.c:949
 vfs_open+0x3b/0x340 fs/open.c:1081
 do_open fs/namei.c:4671 [inline]
 path_openat+0x2e08/0x3860 fs/namei.c:4830
 do_file_open+0x23e/0x4a0 fs/namei.c:4859
 do_sys_openat2+0x113/0x200 fs/open.c:1366
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1383
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd36b2a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffd042ad150 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fd36b975880 RCX: 00007fd36b2a7407
RDX: 0000000000000000 RSI: 00007ffd042aef1b RDI: ffffffffffffff9c
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffd042ad3a0 R14: 00007fd36ba7a000 R15: 00005607cb0324d8
 </TASK>

Allocated by task 6049:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x31c/0x660 mm/slub.c:5339
 kmalloc_noprof include/linux/slab.h:962 [inline]
 kzalloc_noprof include/linux/slab.h:1200 [inline]
 em28xx_v4l2_init+0x10b/0x2e70 drivers/media/usb/em28xx/em28xx-video.c:2532
 em28xx_init_extension+0x120/0x1c0 drivers/media/usb/em28xx/em28xx-core.c:1117
 process_one_work kernel/workqueue.c:3275 [inline]
 process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Freed by task 6049:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2687 [inline]
 slab_free mm/slub.c:6124 [inline]
 kfree+0x1c1/0x630 mm/slub.c:6442
 em28xx_free_v4l2 drivers/media/usb/em28xx/em28xx-video.c:2118 [inline]
 kref_put include/linux/kref.h:65 [inline]
 em28xx_v4l2_init+0x1683/0x2e70 drivers/media/usb/em28xx/em28xx-video.c:2901
 em28xx_init_extension+0x120/0x1c0 drivers/media/usb/em28xx/em28xx-core.c:1117
 process_one_work kernel/workqueue.c:3275 [inline]
 process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff88802ab80000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 1864 bytes inside of
 freed 8192-byte region [ffff88802ab80000, ffff88802ab82000)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2ab80
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 ffff88813fea9280 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88813fea9280 dead000000000100 dead000000000122
head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea0000aae001 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 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5208, tgid 5208 (udevd), ts 35357908707, free_ts 35335839652
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
 prep_new_page mm/page_alloc.c:1897 [inline]
 get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
 alloc_slab_page mm/slub.c:3255 [inline]
 allocate_slab+0x77/0x660 mm/slub.c:3444
 new_slab mm/slub.c:3502 [inline]
 refill_objects+0x331/0x3c0 mm/slub.c:7134
 refill_sheaf mm/slub.c:2804 [inline]
 __pcs_replace_empty_main+0x2b9/0x620 mm/slub.c:4578
 alloc_from_pcs mm/slub.c:4681 [inline]
 slab_alloc_node mm/slub.c:4815 [inline]
 __kmalloc_cache_noprof+0x392/0x660 mm/slub.c:5334
 kmalloc_noprof include/linux/slab.h:962 [inline]
 kzalloc_noprof include/linux/slab.h:1200 [inline]
 tomoyo_print_bprm security/tomoyo/audit.c:26 [inline]
 tomoyo_init_log+0x112e/0x1fb0 security/tomoyo/audit.c:264
 tomoyo_supervisor+0x353/0x1570 security/tomoyo/common.c:2232
 tomoyo_audit_env_log security/tomoyo/environ.c:37 [inline]
 tomoyo_env_perm+0x151/0x1f0 security/tomoyo/environ.c:64
 tomoyo_environ security/tomoyo/domain.c:673 [inline]
 tomoyo_find_next_domain+0x15cb/0x1aa0 security/tomoyo/domain.c:889
 tomoyo_bprm_check_security+0x11b/0x180 security/tomoyo/tomoyo.c:102
 security_bprm_check+0x85/0x240 security/security.c:794
 search_binary_handler fs/exec.c:1654 [inline]
 exec_binprm fs/exec.c:1696 [inline]
 bprm_execve+0x896/0x1460 fs/exec.c:1748
 do_execveat_common+0x50d/0x690 fs/exec.c:1846
 __do_sys_execve fs/exec.c:1930 [inline]
 __se_sys_execve fs/exec.c:1924 [inline]
 __x64_sys_execve+0x97/0xc0 fs/exec.c:1924
page last free pid 5191 tgid 5191 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1433 [inline]
 __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
 __slab_free+0x263/0x2b0 mm/slub.c:5532
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4501 [inline]
 slab_alloc_node mm/slub.c:4830 [inline]
 kmem_cache_alloc_noprof+0x2bc/0x650 mm/slub.c:4837
 alloc_filename fs/namei.c:142 [inline]
 do_getname+0x2e/0x250 fs/namei.c:182
 getname include/linux/fs.h:2512 [inline]
 class_filename_constructor include/linux/fs.h:2539 [inline]
 do_sys_openat2+0xca/0x200 fs/open.c:1365
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1383
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88802ab80600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802ab80680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88802ab80700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                              ^
 ffff88802ab80780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802ab80800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in v4l2_fh_init drivers/media/v4l2-core/v4l2-fh.c:25 [inline]
BUG: KASAN: slab-use-after-free in v4l2_fh_open+0xac/0x420 drivers/media/v4l2-core/v4l2-fh.c:64
Read of size 8 at addr ffff88802ab80748 by task v4l_id/6151

CPU: 1 UID: 0 PID: 6151 Comm: v4l_id Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xba/0x230 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 v4l2_fh_init drivers/media/v4l2-core/v4l2-fh.c:25 [inline]
 v4l2_fh_open+0xac/0x420 drivers/media/v4l2-core/v4l2-fh.c:64
 em28xx_v4l2_open+0x157/0x9a0 drivers/media/usb/em28xx/em28xx-video.c:2153
 v4l2_open+0x1bf/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:433
 chrdev_open+0x4cd/0x5e0 fs/char_dev.c:411
 do_dentry_open+0x785/0x14e0 fs/open.c:949
 vfs_open+0x3b/0x340 fs/open.c:1081
 do_open fs/namei.c:4671 [inline]
 path_openat+0x2e08/0x3860 fs/namei.c:4830
 do_file_open+0x23e/0x4a0 fs/namei.c:4859
 do_sys_openat2+0x113/0x200 fs/open.c:1366
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1383
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd36b2a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffd042ad150 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fd36b975880 RCX: 00007fd36b2a7407
RDX: 0000000000000000 RSI: 00007ffd042aef1b RDI: ffffffffffffff9c
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffd042ad3a0 R14: 00007fd36ba7a000 R15: 00005607cb0324d8
 </TASK>

Allocated by task 6049:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x31c/0x660 mm/slub.c:5339
 kmalloc_noprof include/linux/slab.h:962 [inline]
 kzalloc_noprof include/linux/slab.h:1200 [inline]
 em28xx_v4l2_init+0x10b/0x2e70 drivers/media/usb/em28xx/em28xx-video.c:2532
 em28xx_init_extension+0x120/0x1c0 drivers/media/usb/em28xx/em28xx-core.c:1117
 process_one_work kernel/workqueue.c:3275 [inline]
 process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Freed by task 6049:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2687 [inline]
 slab_free mm/slub.c:6124 [inline]
 kfree+0x1c1/0x630 mm/slub.c:6442
 em28xx_free_v4l2 drivers/media/usb/em28xx/em28xx-video.c:2118 [inline]
 kref_put include/linux/kref.h:65 [inline]
 em28xx_v4l2_init+0x1683/0x2e70 drivers/media/usb/em28xx/em28xx-video.c:2901
 em28xx_init_extension+0x120/0x1c0 drivers/media/usb/em28xx/em28xx-core.c:1117
 process_one_work kernel/workqueue.c:3275 [inline]
 process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff88802ab80000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 1864 bytes inside of
 freed 8192-byte region [ffff88802ab80000, ffff88802ab82000)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2ab80
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 ffff88813fea9280 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88813fea9280 dead000000000100 dead000000000122
head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea0000aae001 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 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5208, tgid 5208 (udevd), ts 35357908707, free_ts 35335839652
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
 prep_new_page mm/page_alloc.c:1897 [inline]
 get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
 alloc_slab_page mm/slub.c:3255 [inline]
 allocate_slab+0x77/0x660 mm/slub.c:3444
 new_slab mm/slub.c:3502 [inline]
 refill_objects+0x331/0x3c0 mm/slub.c:7134
 refill_sheaf mm/slub.c:2804 [inline]
 __pcs_replace_empty_main+0x2b9/0x620 mm/slub.c:4578
 alloc_from_pcs mm/slub.c:4681 [inline]
 slab_alloc_node mm/slub.c:4815 [inline]
 __kmalloc_cache_noprof+0x392/0x660 mm/slub.c:5334
 kmalloc_noprof include/linux/slab.h:962 [inline]
 kzalloc_noprof include/linux/slab.h:1200 [inline]
 tomoyo_print_bprm security/tomoyo/audit.c:26 [inline]
 tomoyo_init_log+0x112e/0x1fb0 security/tomoyo/audit.c:264
 tomoyo_supervisor+0x353/0x1570 security/tomoyo/common.c:2232
 tomoyo_audit_env_log security/tomoyo/environ.c:37 [inline]
 tomoyo_env_perm+0x151/0x1f0 security/tomoyo/environ.c:64
 tomoyo_environ security/tomoyo/domain.c:673 [inline]
 tomoyo_find_next_domain+0x15cb/0x1aa0 security/tomoyo/domain.c:889
 tomoyo_bprm_check_security+0x11b/0x180 security/tomoyo/tomoyo.c:102
 security_bprm_check+0x85/0x240 security/security.c:794
 search_binary_handler fs/exec.c:1654 [inline]
 exec_binprm fs/exec.c:1696 [inline]
 bprm_execve+0x896/0x1460 fs/exec.c:1748
 do_execveat_common+0x50d/0x690 fs/exec.c:1846
 __do_sys_execve fs/exec.c:1930 [inline]
 __se_sys_execve fs/exec.c:1924 [inline]
 __x64_sys_execve+0x97/0xc0 fs/exec.c:1924
page last free pid 5191 tgid 5191 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1433 [inline]
 __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
 __slab_free+0x263/0x2b0 mm/slub.c:5532
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4501 [inline]
 slab_alloc_node mm/slub.c:4830 [inline]
 kmem_cache_alloc_noprof+0x2bc/0x650 mm/slub.c:4837
 alloc_filename fs/namei.c:142 [inline]
 do_getname+0x2e/0x250 fs/namei.c:182
 getname include/linux/fs.h:2512 [inline]
 class_filename_constructor include/linux/fs.h:2539 [inline]
 do_sys_openat2+0xca/0x200 fs/open.c:1365
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1383
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88802ab80600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802ab80680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88802ab80700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                              ^
 ffff88802ab80780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802ab80800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================