Extracting prog: 1m1.854566419s Minimizing prog: 28m9.75654276s Simplifying prog options: 0s Extracting C: 55.011795246s Simplifying C: 7m0.829444051s extracting reproducer from 66 programs first checking the prog from the crash report single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) syz_io_uring_setup(0xd2, 0x0, 0x0, 0x0) syz_memcpy_off$IO_URING_METADATA_GENERIC(0x0, 0x4, 0x0, 0x0, 0x4) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program crashed: KASAN: use-after-free Read in ccid2_hc_tx_packet_recv single: successfully extracted reproducer found reproducer with 11 syscalls minimizing guilty program testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-accept4-sendmsg$nl_xfrm-sendmmsg$inet detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) syz_io_uring_setup(0xd2, 0x0, 0x0, 0x0) syz_memcpy_off$IO_URING_METADATA_GENERIC(0x0, 0x4, 0x0, 0x0, 0x4) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-accept4-sendmsg$nl_xfrm-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) syz_io_uring_setup(0xd2, 0x0, 0x0, 0x0) syz_memcpy_off$IO_URING_METADATA_GENERIC(0x0, 0x4, 0x0, 0x0, 0x4) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-accept4-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) syz_io_uring_setup(0xd2, 0x0, 0x0, 0x0) syz_memcpy_off$IO_URING_METADATA_GENERIC(0x0, 0x4, 0x0, 0x0, 0x4) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) syz_io_uring_setup(0xd2, 0x0, 0x0, 0x0) syz_memcpy_off$IO_URING_METADATA_GENERIC(0x0, 0x4, 0x0, 0x0, 0x4) sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(0xffffffffffffffff, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-syz_io_uring_setup-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) syz_io_uring_setup(0xd2, 0x0, 0x0, 0x0) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program crashed: KASAN: use-after-free Read in ccid2_hc_tx_packet_recv testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program crashed: KASAN: use-after-free Read in ccid2_hc_tx_packet_recv testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) connect$inet6(0xffffffffffffffff, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) r1 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r1, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(0xffffffffffffffff, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r1, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: bind$inet6(0xffffffffffffffff, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(0xffffffffffffffff, 0x20000005) r0 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r0, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) r1 = accept4(0xffffffffffffffff, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r1, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r0, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r1, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, 0x0, 0x0) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, 0x0, 0x0) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, 0x0, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={0x0, 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, 0x0, 0x0, 0x0) sendmmsg$inet6(r2, &(0x7f00000001c0)=[{{0x0, 0x9b4c, 0x0}}], 0x500, 0x0) (fail_nth: 6) program did not crash testing program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 detailed listing: executing program 0: r0 = socket$inet6(0xa, 0x40000080806, 0x0) bind$inet6(r0, &(0x7f000047b000)={0xa, 0x4e20, 0x0, @loopback}, 0x1c) listen(r0, 0x20000005) r1 = socket$inet6(0xa, 0x6, 0x0) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e20, 0x0, @empty}, 0x1c) r2 = accept4(r0, 0x0, 0x0, 0x0) sendmsg$nl_xfrm(r2, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000740)=ANY=[], 0x224}, 0x1, 0x0, 0x0, 0x40024}, 0x1) sendmmsg$inet(r1, &(0x7f0000002ac0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) sendmmsg$inet6(r2, 0x0, 0x0, 0x0) (fail_nth: 6) program did not crash extracting C reproducer testing compiled C program (duration=53.345821065s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 program crashed: KASAN: use-after-free Read in ccid2_hc_tx_packet_recv simplifying C reproducer testing compiled C program (duration=53.345821065s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 program crashed: KASAN: use-after-free Read in ccid2_hc_tx_packet_recv testing compiled C program (duration=53.345821065s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 program crashed: KASAN: use-after-free Read in ccid2_hc_tx_packet_recv testing compiled C program (duration=53.345821065s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 program crashed: KASAN: use-after-free Read in ccid2_hc_tx_packet_recv testing compiled C program (duration=53.345821065s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 program crashed: KASAN: use-after-free Read in ccid2_hc_tx_packet_recv testing compiled C program (duration=53.345821065s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 program crashed: KASAN: use-after-free Read in ccid2_hc_tx_packet_recv testing compiled C program (duration=53.345821065s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 program crashed: KASAN: use-after-free Read in ccid2_hc_tx_packet_recv testing compiled C program (duration=53.345821065s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet6-connect$inet6-accept4-sendmsg$nl_xfrm-sendmmsg$inet-sendmmsg$inet6 program crashed: KASAN: use-after-free Read in ccid2_hc_tx_packet_recv reproducing took 37m7.452373666s repro crashed as (corrupted=false): el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 dccp_parse_options: DCCP(000000001b4e11fb): Option 32 (len=7) error=9 ================================================================== BUG: KASAN: use-after-free in dccp_ackvec_runlen net/dccp/ackvec.h:43 [inline] BUG: KASAN: use-after-free in ccid2_hc_tx_packet_recv+0x1498/0x1af0 net/dccp/ccids/ccid2.c:592 Read of size 1 at addr ffff0000cf91d494 by task syz-executor364/4288 CPU: 1 PID: 4288 Comm: syz-executor364 Not tainted 6.1.115-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 __asan_report_load1_noabort+0x2c/0x38 mm/kasan/report_generic.c:348 dccp_ackvec_runlen net/dccp/ackvec.h:43 [inline] ccid2_hc_tx_packet_recv+0x1498/0x1af0 net/dccp/ccids/ccid2.c:592 ccid_hc_tx_packet_recv net/dccp/ccid.h:189 [inline] dccp_deliver_input_to_ccids net/dccp/input.c:182 [inline] dccp_rcv_established+0x26c/0x2d8 net/dccp/input.c:374 dccp_v6_do_rcv+0x248/0x938 net/dccp/ipv6.c:622 sk_backlog_rcv include/net/sock.h:1119 [inline] __release_sock+0x1a8/0x408 net/core/sock.c:2936 release_sock+0x68/0x1cc net/core/sock.c:3500 dccp_sendmsg+0x46c/0xb80 net/dccp/proto.c:800 inet_sendmsg+0x15c/0x290 net/ipv4/af_inet.c:843 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x55c/0x848 net/socket.c:2519 ___sys_sendmsg net/socket.c:2573 [inline] __sys_sendmmsg+0x318/0x7d8 net/socket.c:2659 __do_sys_sendmmsg net/socket.c:2688 [inline] __se_sys_sendmmsg net/socket.c:2685 [inline] __arm64_sys_sendmmsg+0xa0/0xbc net/socket.c:2685 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 4288: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:936 [inline] __kmalloc_node_track_caller+0xd0/0x1c0 mm/slab_common.c:956 kmalloc_reserve net/core/skbuff.c:446 [inline] __alloc_skb+0x180/0x580 net/core/skbuff.c:515 alloc_skb include/linux/skbuff.h:1271 [inline] dccp_send_ack+0xa4/0x2bc net/dccp/output.c:585 ccid2_hc_rx_packet_recv+0x114/0x1b8 net/dccp/ccids/ccid2.c:771 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline] dccp_deliver_input_to_ccids net/dccp/input.c:176 [inline] dccp_rcv_established+0x1ac/0x2d8 net/dccp/input.c:374 dccp_v6_do_rcv+0x248/0x938 net/dccp/ipv6.c:622 sk_backlog_rcv include/net/sock.h:1119 [inline] __sk_receive_skb+0x3f8/0x900 net/core/sock.c:569 dccp_v6_rcv+0xbac/0x10b8 net/dccp/ipv6.c:791 ip6_protocol_deliver_rcu+0x958/0x1214 net/ipv6/ip6_input.c:438 ip6_input_finish+0x164/0x298 net/ipv6/ip6_input.c:483 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:302 ip6_input+0x70/0x84 net/ipv6/ip6_input.c:492 dst_input include/net/dst.h:454 [inline] ip6_rcv_finish+0x1f4/0x220 net/ipv6/ip6_input.c:79 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:302 ipv6_rcv+0x98/0xb8 net/ipv6/ip6_input.c:310 __netif_receive_skb_one_core net/core/dev.c:5532 [inline] __netif_receive_skb+0x18c/0x400 net/core/dev.c:5646 process_backlog+0x410/0x784 net/core/dev.c:5974 __napi_poll+0xb4/0x3f0 net/core/dev.c:6541 napi_poll net/core/dev.c:6608 [inline] net_rx_action+0x5cc/0xd3c net/core/dev.c:6722 handle_softirqs+0x318/0xd58 kernel/softirq.c:571 __do_softirq+0x14/0x20 kernel/softirq.c:605 Freed by task 4288: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:516 ____kasan_slab_free+0x144/0x1c0 mm/kasan/common.c:236 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x2c0/0x4b4 mm/slub.c:3674 kfree+0xcc/0x1b8 mm/slab_common.c:988 skb_free_head net/core/skbuff.c:762 [inline] skb_release_data+0x488/0x6b0 net/core/skbuff.c:791 skb_release_all net/core/skbuff.c:856 [inline] __kfree_skb net/core/skbuff.c:870 [inline] kfree_skb_reason+0x1a4/0x47c net/core/skbuff.c:893 dccp_v6_do_rcv+0x12c/0x938 sk_backlog_rcv include/net/sock.h:1119 [inline] __release_sock+0x1a8/0x408 net/core/sock.c:2936 release_sock+0x68/0x1cc net/core/sock.c:3500 dccp_sendmsg+0x46c/0xb80 net/dccp/proto.c:800 inet_sendmsg+0x15c/0x290 net/ipv4/af_inet.c:843 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x55c/0x848 net/socket.c:2519 ___sys_sendmsg net/socket.c:2573 [inline] __sys_sendmmsg+0x318/0x7d8 net/socket.c:2659 __do_sys_sendmmsg net/socket.c:2688 [inline] __se_sys_sendmmsg net/socket.c:2685 [inline] __arm64_sys_sendmmsg+0xa0/0xbc net/socket.c:2685 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Last potentially related work creation: kasan_save_stack+0x40/0x70 mm/kasan/common.c:45 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2845 netlink_release+0x11d0/0x16e0 net/netlink/af_netlink.c:815 __sock_release net/socket.c:654 [inline] sock_close+0xb8/0x1fc net/socket.c:1400 __fput+0x1c8/0x7c8 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the object at ffff0000cf91d000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 1172 bytes inside of 2048-byte region [ffff0000cf91d000, ffff0000cf91d800) The buggy address belongs to the physical page: page:000000000699280c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10f918 head:000000000699280c order:3 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 fffffc0003288000 dead000000000002 ffff0000c0002900 raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000cf91d380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000cf91d400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000cf91d480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000cf91d500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000cf91d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== final repro crashed as (corrupted=false): el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 dccp_parse_options: DCCP(000000001b4e11fb): Option 32 (len=7) error=9 ================================================================== BUG: KASAN: use-after-free in dccp_ackvec_runlen net/dccp/ackvec.h:43 [inline] BUG: KASAN: use-after-free in ccid2_hc_tx_packet_recv+0x1498/0x1af0 net/dccp/ccids/ccid2.c:592 Read of size 1 at addr ffff0000cf91d494 by task syz-executor364/4288 CPU: 1 PID: 4288 Comm: syz-executor364 Not tainted 6.1.115-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 __asan_report_load1_noabort+0x2c/0x38 mm/kasan/report_generic.c:348 dccp_ackvec_runlen net/dccp/ackvec.h:43 [inline] ccid2_hc_tx_packet_recv+0x1498/0x1af0 net/dccp/ccids/ccid2.c:592 ccid_hc_tx_packet_recv net/dccp/ccid.h:189 [inline] dccp_deliver_input_to_ccids net/dccp/input.c:182 [inline] dccp_rcv_established+0x26c/0x2d8 net/dccp/input.c:374 dccp_v6_do_rcv+0x248/0x938 net/dccp/ipv6.c:622 sk_backlog_rcv include/net/sock.h:1119 [inline] __release_sock+0x1a8/0x408 net/core/sock.c:2936 release_sock+0x68/0x1cc net/core/sock.c:3500 dccp_sendmsg+0x46c/0xb80 net/dccp/proto.c:800 inet_sendmsg+0x15c/0x290 net/ipv4/af_inet.c:843 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x55c/0x848 net/socket.c:2519 ___sys_sendmsg net/socket.c:2573 [inline] __sys_sendmmsg+0x318/0x7d8 net/socket.c:2659 __do_sys_sendmmsg net/socket.c:2688 [inline] __se_sys_sendmmsg net/socket.c:2685 [inline] __arm64_sys_sendmmsg+0xa0/0xbc net/socket.c:2685 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 4288: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:936 [inline] __kmalloc_node_track_caller+0xd0/0x1c0 mm/slab_common.c:956 kmalloc_reserve net/core/skbuff.c:446 [inline] __alloc_skb+0x180/0x580 net/core/skbuff.c:515 alloc_skb include/linux/skbuff.h:1271 [inline] dccp_send_ack+0xa4/0x2bc net/dccp/output.c:585 ccid2_hc_rx_packet_recv+0x114/0x1b8 net/dccp/ccids/ccid2.c:771 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline] dccp_deliver_input_to_ccids net/dccp/input.c:176 [inline] dccp_rcv_established+0x1ac/0x2d8 net/dccp/input.c:374 dccp_v6_do_rcv+0x248/0x938 net/dccp/ipv6.c:622 sk_backlog_rcv include/net/sock.h:1119 [inline] __sk_receive_skb+0x3f8/0x900 net/core/sock.c:569 dccp_v6_rcv+0xbac/0x10b8 net/dccp/ipv6.c:791 ip6_protocol_deliver_rcu+0x958/0x1214 net/ipv6/ip6_input.c:438 ip6_input_finish+0x164/0x298 net/ipv6/ip6_input.c:483 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:302 ip6_input+0x70/0x84 net/ipv6/ip6_input.c:492 dst_input include/net/dst.h:454 [inline] ip6_rcv_finish+0x1f4/0x220 net/ipv6/ip6_input.c:79 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:302 ipv6_rcv+0x98/0xb8 net/ipv6/ip6_input.c:310 __netif_receive_skb_one_core net/core/dev.c:5532 [inline] __netif_receive_skb+0x18c/0x400 net/core/dev.c:5646 process_backlog+0x410/0x784 net/core/dev.c:5974 __napi_poll+0xb4/0x3f0 net/core/dev.c:6541 napi_poll net/core/dev.c:6608 [inline] net_rx_action+0x5cc/0xd3c net/core/dev.c:6722 handle_softirqs+0x318/0xd58 kernel/softirq.c:571 __do_softirq+0x14/0x20 kernel/softirq.c:605 Freed by task 4288: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:516 ____kasan_slab_free+0x144/0x1c0 mm/kasan/common.c:236 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x2c0/0x4b4 mm/slub.c:3674 kfree+0xcc/0x1b8 mm/slab_common.c:988 skb_free_head net/core/skbuff.c:762 [inline] skb_release_data+0x488/0x6b0 net/core/skbuff.c:791 skb_release_all net/core/skbuff.c:856 [inline] __kfree_skb net/core/skbuff.c:870 [inline] kfree_skb_reason+0x1a4/0x47c net/core/skbuff.c:893 dccp_v6_do_rcv+0x12c/0x938 sk_backlog_rcv include/net/sock.h:1119 [inline] __release_sock+0x1a8/0x408 net/core/sock.c:2936 release_sock+0x68/0x1cc net/core/sock.c:3500 dccp_sendmsg+0x46c/0xb80 net/dccp/proto.c:800 inet_sendmsg+0x15c/0x290 net/ipv4/af_inet.c:843 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x55c/0x848 net/socket.c:2519 ___sys_sendmsg net/socket.c:2573 [inline] __sys_sendmmsg+0x318/0x7d8 net/socket.c:2659 __do_sys_sendmmsg net/socket.c:2688 [inline] __se_sys_sendmmsg net/socket.c:2685 [inline] __arm64_sys_sendmmsg+0xa0/0xbc net/socket.c:2685 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Last potentially related work creation: kasan_save_stack+0x40/0x70 mm/kasan/common.c:45 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2845 netlink_release+0x11d0/0x16e0 net/netlink/af_netlink.c:815 __sock_release net/socket.c:654 [inline] sock_close+0xb8/0x1fc net/socket.c:1400 __fput+0x1c8/0x7c8 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the object at ffff0000cf91d000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 1172 bytes inside of 2048-byte region [ffff0000cf91d000, ffff0000cf91d800) The buggy address belongs to the physical page: page:000000000699280c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10f918 head:000000000699280c order:3 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 fffffc0003288000 dead000000000002 ffff0000c0002900 raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000cf91d380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000cf91d400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000cf91d480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000cf91d500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000cf91d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================