Extracting prog: 1m12.975868463s
Minimizing prog: 12m17.842701057s
Simplifying prog options: 1m7.070261396s
Extracting C: 33.139991634s
Simplifying C: 3m33.498360081s


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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program crashed: KASAN: use-after-free Read in ring_buffer_peek
single: successfully extracted reproducer
found reproducer with 8 syscalls
minimizing guilty program
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
write(0xffffffffffffffff, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r0, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
readv(0xffffffffffffffff, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r0, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{0x0}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', 0x0, 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x0)
write(r1, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
program did not crash
simplifying guilty program options
testing program (duration=30s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program crashed: KASAN: use-after-free Read in ring_buffer_peek
extracting C reproducer
testing compiled C program (duration=30s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
program crashed: KASAN: use-after-free Read in ring_buffer_peek
simplifying C reproducer
testing compiled C program (duration=30s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
program did not crash
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
program did not crash
testing compiled C program (duration=30s, {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}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
program crashed: KASAN: use-after-free Read in ring_buffer_peek
testing compiled C program (duration=30s, {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}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
program crashed: KASAN: use-after-free Read in ring_buffer_peek
testing compiled C program (duration=30s, {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}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
program crashed: KASAN: use-after-free Read in ring_buffer_peek
testing compiled C program (duration=30s, {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}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
program crashed: KASAN: use-after-free Read in ring_buffer_peek
testing program (duration=30s, {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}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program crashed: KASAN: use-after-free Read in ring_buffer_peek
validation run: crashed=true
testing program (duration=30s, {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}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program crashed: KASAN: use-after-free Read in ring_buffer_peek
validation run: crashed=true
testing program (duration=30s, {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}}): mkdirat-mount-openat-readv-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./debug/tracing/trace_pipe\x00', 0x800, 0x0)
readv(r0, &(0x7f0000000040)=[{&(0x7f0000000140)=""/50, 0x32}], 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./trace\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./trace\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./trace/events/dwc3/dwc3_ctrl_req/inject\x00', 0x2, 0x0)
write(r1, 0x0, 0x0)

program crashed: KASAN: use-after-free Read in ring_buffer_peek
validation run: crashed=true
reproducing took 20m44.261384657s
repro crashed as (corrupted=false):
R13: 00007f6125647fac R14: 00007f6125647fa0 R15: 00007f6125647fa0
 </TASK>
---[ end trace b3215f34ce94354e ]---
==================================================================
BUG: KASAN: use-after-free in rb_buffer_peek+0x71a/0x7a0 kernel/trace/ring_buffer.c:4747
Read of size 4 at addr ffff8881a606b1e9 by task syz.3.54/430

CPU: 1 PID: 430 Comm: syz.3.54 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0x10f/0x150 mm/kasan/report.c:444
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
 rb_buffer_peek+0x71a/0x7a0 kernel/trace/ring_buffer.c:4747
 ring_buffer_peek+0x184/0x3b0 kernel/trace/ring_buffer.c:4941
 peek_next_entry kernel/trace/trace.c:3571 [inline]
 __find_next_entry+0x34d/0x6b0 kernel/trace/trace.c:3615
 trace_find_next_entry_inc kernel/trace/trace.c:3996 [inline]
 tracing_read_pipe+0x3b8/0xab0 kernel/trace/trace.c:6831
 do_loop_readv_writev fs/read_write.c:-1 [inline]
 do_iter_read+0x50b/0x780 fs/read_write.c:792
 vfs_readv fs/read_write.c:910 [inline]
 do_readv+0x25d/0x450 fs/read_write.c:947
 __do_sys_readv fs/read_write.c:1038 [inline]
 __se_sys_readv fs/read_write.c:1035 [inline]
 __x64_sys_readv+0x7d/0x90 fs/read_write.c:1035
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:20
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f61253c1559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd9c6850a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000013
RAX: ffffffffffffffda RBX: 00007f6125647fa0 RCX: 00007f61253c1559
RDX: 0000000000000001 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007f6125458b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6125647fac R14: 00007f6125647fa0 R15: 00007f6125647fa0
 </TASK>

The buggy address belongs to the page:
page:ffffea0006981ac0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a606b
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 ffffea0006981ac8 ffffea0006981ac8 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)

Memory state around the buggy address:
 ffff8881a606b080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881a606b100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881a606b180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                          ^
 ffff8881a606b200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881a606b280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================

final repro crashed as (corrupted=false):
R13: 00007f6125647fac R14: 00007f6125647fa0 R15: 00007f6125647fa0
 </TASK>
---[ end trace b3215f34ce94354e ]---
==================================================================
BUG: KASAN: use-after-free in rb_buffer_peek+0x71a/0x7a0 kernel/trace/ring_buffer.c:4747
Read of size 4 at addr ffff8881a606b1e9 by task syz.3.54/430

CPU: 1 PID: 430 Comm: syz.3.54 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0x10f/0x150 mm/kasan/report.c:444
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
 rb_buffer_peek+0x71a/0x7a0 kernel/trace/ring_buffer.c:4747
 ring_buffer_peek+0x184/0x3b0 kernel/trace/ring_buffer.c:4941
 peek_next_entry kernel/trace/trace.c:3571 [inline]
 __find_next_entry+0x34d/0x6b0 kernel/trace/trace.c:3615
 trace_find_next_entry_inc kernel/trace/trace.c:3996 [inline]
 tracing_read_pipe+0x3b8/0xab0 kernel/trace/trace.c:6831
 do_loop_readv_writev fs/read_write.c:-1 [inline]
 do_iter_read+0x50b/0x780 fs/read_write.c:792
 vfs_readv fs/read_write.c:910 [inline]
 do_readv+0x25d/0x450 fs/read_write.c:947
 __do_sys_readv fs/read_write.c:1038 [inline]
 __se_sys_readv fs/read_write.c:1035 [inline]
 __x64_sys_readv+0x7d/0x90 fs/read_write.c:1035
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:20
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f61253c1559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd9c6850a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000013
RAX: ffffffffffffffda RBX: 00007f6125647fa0 RCX: 00007f61253c1559
RDX: 0000000000000001 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007f6125458b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6125647fac R14: 00007f6125647fa0 R15: 00007f6125647fa0
 </TASK>

The buggy address belongs to the page:
page:ffffea0006981ac0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a606b
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 ffffea0006981ac8 ffffea0006981ac8 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)

Memory state around the buggy address:
 ffff8881a606b080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881a606b100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881a606b180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                          ^
 ffff8881a606b200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881a606b280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================