Extracting prog: 2m30.673662098s
Minimizing prog: 32m39.911862816s
Simplifying prog options: 3m5.504640888s
Extracting C: 1m52.61341314s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: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$inet6-syz_genetlink_get_family_id$devlink-bind$inet6-listen-socket$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
syz_genetlink_get_family_id$devlink(0x0, 0xffffffffffffffff)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program crashed: BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
single: successfully extracted reproducer
found reproducer with 10 syscalls
minimizing guilty program
testing program (duration=1m1.024763853s, {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$inet6-syz_genetlink_get_family_id$devlink-bind$inet6-listen-socket$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
syz_genetlink_get_family_id$devlink(0x0, 0xffffffffffffffff)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet6-syz_genetlink_get_family_id$devlink-bind$inet6-listen-socket$inet_dccp-setsockopt-connect$inet-accept4-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
syz_genetlink_get_family_id$devlink(0x0, 0xffffffffffffffff)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
accept4(r0, 0x0, 0x0, 0x0)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet6-syz_genetlink_get_family_id$devlink-bind$inet6-listen-socket$inet_dccp-setsockopt-connect$inet-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
syz_genetlink_get_family_id$devlink(0x0, 0xffffffffffffffff)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
sendmsg$nl_route(0xffffffffffffffff, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet6-syz_genetlink_get_family_id$devlink-bind$inet6-listen-socket$inet_dccp-setsockopt-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
syz_genetlink_get_family_id$devlink(0x0, 0xffffffffffffffff)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet6-syz_genetlink_get_family_id$devlink-bind$inet6-listen-socket$inet_dccp-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
syz_genetlink_get_family_id$devlink(0x0, 0xffffffffffffffff)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet6-syz_genetlink_get_family_id$devlink-bind$inet6-listen-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
syz_genetlink_get_family_id$devlink(0x0, 0xffffffffffffffff)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
setsockopt(0xffffffffffffffff, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(0xffffffffffffffff, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r1 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(0xffffffffffffffff, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet6-syz_genetlink_get_family_id$devlink-bind$inet6-socket$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
syz_genetlink_get_family_id$devlink(0x0, 0xffffffffffffffff)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet6-syz_genetlink_get_family_id$devlink-listen-socket$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
syz_genetlink_get_family_id$devlink(0x0, 0xffffffffffffffff)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program crashed: BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
testing program (duration=1m1.024763853s, {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$inet6-listen-socket$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
bind$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(0xffffffffffffffff, 0x101)
r0 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r0, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r0, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r1 = accept4(0xffffffffffffffff, 0x0, 0x0, 0x0)
sendmsg$nl_route(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r0, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1)

program did not crash
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, 0x0, 0x0)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, 0x0, 0x0)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff), 0x0)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, 0x0, 0x0)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, 0x0, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, 0x0}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={0x0, 0x14}}, 0x0) (async, rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program crashed: BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (rerun: 64)
write$binfmt_aout(r1, 0x0, 0xc1) (rerun: 64)

program did not crash
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1)

program crashed: BUG: please report to dccp@vger.kernel.org => prev = NUM, last = NUM at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx
extracting C reproducer
testing compiled C program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
program did not crash
simplifying guilty program options
testing program (duration=1m1.024763853s, {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$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1)

program did not crash
testing program (duration=1m1.024763853s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-bind$inet6-listen-socket$inet_dccp-setsockopt-connect$inet-accept4-sendmsg$nl_route-write$binfmt_aout
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x6, 0x0)
bind$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20}, 0x1c)
listen(r0, 0x101)
r1 = socket$inet_dccp(0x2, 0x6, 0x0)
setsockopt(r1, 0x10d, 0x800000000d, &(0x7f00001c9fff)="03", 0x1)
connect$inet(r1, &(0x7f0000e5c000)={0x2, 0x4e20, @dev}, 0x3a)
r2 = accept4(r0, 0x0, 0x0, 0x0)
sendmsg$nl_route(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[], 0x14}}, 0x0) (rerun: 64)
write$binfmt_aout(r1, &(0x7f00000019c0)=ANY=[], 0xc1)

program did not crash
reproducing took 40m8.703618882s
repro crashed as (corrupted=false):
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:417/tfrc_rx_hist_sample_rtt()
CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.1.129-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 tfrc_rx_hist_sample_rtt+0x34c/0x444 net/dccp/ccids/lib/packet_history.c:414
 ccid3_hc_rx_packet_recv+0x554/0xc98 net/dccp/ccids/ccid3.c:760
 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_v4_do_rcv+0xe8/0x1d4 net/dccp/ipv4.c:677
 sk_backlog_rcv include/net/sock.h:1119 [inline]
 __sk_receive_skb+0x3f8/0x900 net/core/sock.c:569
 dccp_v4_rcv+0xf44/0x157c net/dccp/ipv4.c:900
 ip_protocol_deliver_rcu+0x344/0x76c net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x258/0x49c net/ipv4/ip_input.c:233
 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:302
 ip_local_deliver+0x120/0x194 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:454 [inline]
 ip_rcv_finish+0x224/0x250 net/ipv4/ip_input.c:449
 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:302
 ip_rcv+0x7c/0x9c net/ipv4/ip_input.c:569
 __netif_receive_skb_one_core net/core/dev.c:5538 [inline]
 __netif_receive_skb+0x18c/0x400 net/core/dev.c:5652
 process_backlog+0x410/0x784 net/core/dev.c:5980
 __napi_poll+0xb4/0x3f0 net/core/dev.c:6547
 napi_poll net/core/dev.c:6614 [inline]
 net_rx_action+0x5cc/0xd3c net/core/dev.c:6728
 handle_softirqs+0x318/0xd58 kernel/softirq.c:578
 run_ksoftirqd+0x6c/0x29c kernel/softirq.c:945
 smpboot_thread_fn+0x4b0/0x96c kernel/smpboot.c:164
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864

final repro crashed as (corrupted=false):
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:417/tfrc_rx_hist_sample_rtt()
CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.1.129-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 tfrc_rx_hist_sample_rtt+0x34c/0x444 net/dccp/ccids/lib/packet_history.c:414
 ccid3_hc_rx_packet_recv+0x554/0xc98 net/dccp/ccids/ccid3.c:760
 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_v4_do_rcv+0xe8/0x1d4 net/dccp/ipv4.c:677
 sk_backlog_rcv include/net/sock.h:1119 [inline]
 __sk_receive_skb+0x3f8/0x900 net/core/sock.c:569
 dccp_v4_rcv+0xf44/0x157c net/dccp/ipv4.c:900
 ip_protocol_deliver_rcu+0x344/0x76c net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x258/0x49c net/ipv4/ip_input.c:233
 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:302
 ip_local_deliver+0x120/0x194 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:454 [inline]
 ip_rcv_finish+0x224/0x250 net/ipv4/ip_input.c:449
 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:302
 ip_rcv+0x7c/0x9c net/ipv4/ip_input.c:569
 __netif_receive_skb_one_core net/core/dev.c:5538 [inline]
 __netif_receive_skb+0x18c/0x400 net/core/dev.c:5652
 process_backlog+0x410/0x784 net/core/dev.c:5980
 __napi_poll+0xb4/0x3f0 net/core/dev.c:6547
 napi_poll net/core/dev.c:6614 [inline]
 net_rx_action+0x5cc/0xd3c net/core/dev.c:6728
 handle_softirqs+0x318/0xd58 kernel/softirq.c:578
 run_ksoftirqd+0x6c/0x29c kernel/softirq.c:945
 smpboot_thread_fn+0x4b0/0x96c kernel/smpboot.c:164
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864