Extracting prog: 1m14.007523866s
Minimizing prog: 11m54.390708147s
Simplifying prog options: 2m17.215755488s
Extracting C: 42.675488947s
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: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-write-readv-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
readv(r0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
program crashed: KASAN: use-after-free Read in gadgets_drop
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-write-readv-mkdirat-mount
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
readv(r0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 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-write-readv-mkdirat-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
readv(r0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-readv-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
readv(r0, 0x0, 0x0)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
program crashed: KASAN: use-after-free Read in gadgets_drop
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-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
write(0xffffffffffffffff, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, 0x0, &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', 0x0, 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000), 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
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-write-mkdirat-mount-mkdirat
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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
program crashed: KASAN: use-after-free Read in gadgets_drop
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-write-mkdirat-mount-mkdirat
program did not crash
testing 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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
program crashed: KASAN: use-after-free Read in gadgets_drop
extracting 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-write-mkdirat-mount-mkdirat
program did not crash
testing 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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
program crashed: KASAN: use-after-free Read in gadgets_drop
validation run: crashed=true
testing 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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
program crashed: KASAN: use-after-free Read in gadgets_drop
validation run: crashed=true
testing 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-write-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./proc\x00', 0x161)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x1)
write(r0, &(0x7f0000000000)='100', 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./config\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./config\x00', &(0x7f0000000400)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./config/usb_gadget/g1\x00', 0x1ff)
program crashed: KASAN: use-after-free Read in gadgets_drop
validation run: crashed=true
reproducing took 17m27.633710197s
repro crashed as (corrupted=false):
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:00007ffce45609c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f84a9917fa0 RCX: 00007f84a9691b19
RDX: 00000000000001ff RSI: 0000200000000540 RDI: ffffffffffffff9c
RBP: 00007f84a9729b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f84a9917fac R14: 00007f84a9917fa0 R15: 00007f84a9917fa0
==================================================================
BUG: KASAN: use-after-free in android_device_destroy drivers/usb/gadget/configfs.c:1819 [inline]
BUG: KASAN: use-after-free in gadgets_drop+0x40/0xd0 drivers/usb/gadget/configfs.c:1901
Read of size 8 at addr ffff88810fd0d550 by task syz.2.17/372
CPU: 1 PID: 372 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
Call Trace:
__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_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
android_device_destroy drivers/usb/gadget/configfs.c:1819 [inline]
gadgets_drop+0x40/0xd0 drivers/usb/gadget/configfs.c:1901
client_drop_item+0x94/0xc0 fs/configfs/dir.c:962
configfs_mkdir+0x7f1/0x9c0 fs/configfs/dir.c:1440
vfs_mkdir+0x38b/0x590 fs/namei.c:4073
do_mkdirat+0x174/0x4d0 fs/namei.c:4098
__do_sys_mkdirat fs/namei.c:4113 [inline]
__se_sys_mkdirat fs/namei.c:4111 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4111
x64_sys_call+0x37e/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
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: 0033:0x7f84a9691b19
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:00007ffce45609c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f84a9917fa0 RCX: 00007f84a9691b19
RDX: 00000000000001ff RSI: 0000200000000540 RDI: ffffffffffffff9c
RBP: 00007f84a9729b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f84a9917fac R14: 00007f84a9917fa0 R15: 00007f84a9917fa0
Allocated by task 372:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:433 [inline]
____kasan_kmalloc mm/kasan/common.c:512 [inline]
__kasan_kmalloc+0xd4/0x100 mm/kasan/common.c:521
kasan_kmalloc include/linux/kasan.h:227 [inline]
kmem_cache_alloc_trace+0x119/0x270 mm/slub.c:3274
kmalloc include/linux/slab.h:619 [inline]
kzalloc include/linux/slab.h:750 [inline]
gadgets_make+0x57/0xa70 drivers/usb/gadget/configfs.c:1839
configfs_mkdir+0x50a/0x9c0 fs/configfs/dir.c:1356
vfs_mkdir+0x38b/0x590 fs/namei.c:4073
do_mkdirat+0x174/0x4d0 fs/namei.c:4098
__do_sys_mkdirat fs/namei.c:4113 [inline]
__se_sys_mkdirat fs/namei.c:4111 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4111
x64_sys_call+0x37e/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
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
Freed by task 372:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4a/0x70 mm/kasan/common.c:45
kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
____kasan_slab_free+0x125/0x160 mm/kasan/common.c:365
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
kasan_slab_free include/linux/kasan.h:193 [inline]
slab_free_hook mm/slub.c:1728 [inline]
slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1754
slab_free mm/slub.c:3526 [inline]
kfree+0xc4/0x270 mm/slub.c:4588
gadget_info_attr_release+0xcb/0xf0 drivers/usb/gadget/configfs.c:429
config_item_cleanup fs/configfs/item.c:128 [inline]
config_item_release fs/configfs/item.c:137 [inline]
kref_put include/linux/kref.h:65 [inline]
config_item_put+0x158/0x210 fs/configfs/item.c:149
gadgets_drop+0x23/0xd0 drivers/usb/gadget/configfs.c:1900
client_drop_item+0x94/0xc0 fs/configfs/dir.c:962
configfs_mkdir+0x7f1/0x9c0 fs/configfs/dir.c:1440
vfs_mkdir+0x38b/0x590 fs/namei.c:4073
do_mkdirat+0x174/0x4d0 fs/namei.c:4098
__do_sys_mkdirat fs/namei.c:4113 [inline]
__se_sys_mkdirat fs/namei.c:4111 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4111
x64_sys_call+0x37e/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
The buggy address belongs to the object at ffff88810fd0d000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1360 bytes inside of
2048-byte region [ffff88810fd0d000, ffff88810fd0d800)
The buggy address belongs to the page:
page:ffffea00043f4200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10fd08
head:ffffea00043f4200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100043200
raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 372, ts 29237740193, free_ts 29190065906
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2610
prep_new_page+0x1c/0x110 mm/page_alloc.c:2616
get_page_from_freelist+0x2d42/0x2dd0 mm/page_alloc.c:4492
__alloc_pages+0x1a2/0x460 mm/page_alloc.c:5829
alloc_slab_page mm/slub.c:-1 [inline]
allocate_slab mm/slub.c:1937 [inline]
new_slab+0xa0/0x4d0 mm/slub.c:2000
___slab_alloc+0x3ac/0x840 mm/slub.c:3033
__slab_alloc+0x49/0x90 mm/slub.c:3120
slab_alloc_node mm/slub.c:3211 [inline]
slab_alloc mm/slub.c:3255 [inline]
kmem_cache_alloc_trace+0x146/0x270 mm/slub.c:3272
kmalloc include/linux/slab.h:619 [inline]
kzalloc include/linux/slab.h:750 [inline]
alloc_super+0x5e/0x840 fs/super.c:203
sget_fc+0x2c9/0x700 fs/super.c:554
vfs_get_super fs/super.c:1178 [inline]
get_tree_nodev+0x2a/0x160 fs/super.c:1213
proc_get_tree+0x1c/0x20 fs/proc/root.c:229
vfs_get_tree+0x89/0x260 fs/super.c:1541
do_new_mount+0x251/0xb40 fs/namespace.c:3037
path_mount+0x640/0xff0 fs/namespace.c:3367
do_mount fs/namespace.c:3380 [inline]
__do_sys_mount fs/namespace.c:3588 [inline]
__se_sys_mount+0x320/0x390 fs/namespace.c:3565
page last free stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1477 [inline]
free_pcp_prepare mm/page_alloc.c:1549 [inline]
free_unref_page_prepare+0x5fa/0x600 mm/page_alloc.c:3540
free_unref_page+0xae/0x540 mm/page_alloc.c:3622
free_the_page mm/page_alloc.c:808 [inline]
__free_pages+0x6c/0x100 mm/page_alloc.c:5905
__free_slab+0xe5/0x1e0 mm/slub.c:2025
free_slab mm/slub.c:2040 [inline]
discard_slab mm/slub.c:2046 [inline]
__unfreeze_partials+0x15a/0x190 mm/slub.c:2532
put_cpu_partial+0xc6/0x120 mm/slub.c:2612
__slab_free+0x1d4/0x290 mm/slub.c:3395
do_slab_free mm/slub.c:3514 [inline]
___cache_free+0x104/0x120 mm/slub.c:3535
qlink_free+0x4d/0x90 mm/kasan/quarantine.c:157
qlist_free_all+0x5f/0xb0 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x14a/0x170 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:443
kasan_slab_alloc include/linux/kasan.h:217 [inline]
slab_post_alloc_hook+0x4f/0x2b0 mm/slab.h:550
slab_alloc_node mm/slub.c:3245 [inline]
slab_alloc mm/slub.c:3255 [inline]
kmem_cache_alloc+0xf7/0x260 mm/slub.c:3260
kmem_cache_alloc_node include/linux/slab.h:492 [inline]
__alloc_skb+0xe4/0x730 net/core/skbuff.c:416
alloc_skb include/linux/skbuff.h:1183 [inline]
nlmsg_new include/net/netlink.h:953 [inline]
rtmsg_ifinfo_build_skb+0x75/0x180 net/core/rtnetlink.c:3896
Memory state around the buggy address:
ffff88810fd0d400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88810fd0d480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88810fd0d500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88810fd0d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88810fd0d600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: ff c3 inc %ebx
2: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
9: 00 00 00
c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
11: 48 89 f8 mov %rdi,%rax
14: 48 89 f7 mov %rsi,%rdi
17: 48 89 d6 mov %rdx,%rsi
1a: 48 89 ca mov %rcx,%rdx
1d: 4d 89 c2 mov %r8,%r10
20: 4d 89 c8 mov %r9,%r8
23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9
28: 0f 05 syscall
* 2a: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction
30: 73 01 jae 0x33
32: c3 ret
33: 48 c7 c1 e8 ff ff ff mov $0xffffffffffffffe8,%rcx
3a: f7 d8 neg %eax
3c: 64 89 01 mov %eax,%fs:(%rcx)
3f: 48 rex.W
final repro crashed as (corrupted=false):
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:00007ffce45609c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f84a9917fa0 RCX: 00007f84a9691b19
RDX: 00000000000001ff RSI: 0000200000000540 RDI: ffffffffffffff9c
RBP: 00007f84a9729b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f84a9917fac R14: 00007f84a9917fa0 R15: 00007f84a9917fa0
==================================================================
BUG: KASAN: use-after-free in android_device_destroy drivers/usb/gadget/configfs.c:1819 [inline]
BUG: KASAN: use-after-free in gadgets_drop+0x40/0xd0 drivers/usb/gadget/configfs.c:1901
Read of size 8 at addr ffff88810fd0d550 by task syz.2.17/372
CPU: 1 PID: 372 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
Call Trace:
__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_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
android_device_destroy drivers/usb/gadget/configfs.c:1819 [inline]
gadgets_drop+0x40/0xd0 drivers/usb/gadget/configfs.c:1901
client_drop_item+0x94/0xc0 fs/configfs/dir.c:962
configfs_mkdir+0x7f1/0x9c0 fs/configfs/dir.c:1440
vfs_mkdir+0x38b/0x590 fs/namei.c:4073
do_mkdirat+0x174/0x4d0 fs/namei.c:4098
__do_sys_mkdirat fs/namei.c:4113 [inline]
__se_sys_mkdirat fs/namei.c:4111 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4111
x64_sys_call+0x37e/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
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: 0033:0x7f84a9691b19
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:00007ffce45609c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f84a9917fa0 RCX: 00007f84a9691b19
RDX: 00000000000001ff RSI: 0000200000000540 RDI: ffffffffffffff9c
RBP: 00007f84a9729b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f84a9917fac R14: 00007f84a9917fa0 R15: 00007f84a9917fa0
Allocated by task 372:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:433 [inline]
____kasan_kmalloc mm/kasan/common.c:512 [inline]
__kasan_kmalloc+0xd4/0x100 mm/kasan/common.c:521
kasan_kmalloc include/linux/kasan.h:227 [inline]
kmem_cache_alloc_trace+0x119/0x270 mm/slub.c:3274
kmalloc include/linux/slab.h:619 [inline]
kzalloc include/linux/slab.h:750 [inline]
gadgets_make+0x57/0xa70 drivers/usb/gadget/configfs.c:1839
configfs_mkdir+0x50a/0x9c0 fs/configfs/dir.c:1356
vfs_mkdir+0x38b/0x590 fs/namei.c:4073
do_mkdirat+0x174/0x4d0 fs/namei.c:4098
__do_sys_mkdirat fs/namei.c:4113 [inline]
__se_sys_mkdirat fs/namei.c:4111 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4111
x64_sys_call+0x37e/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
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
Freed by task 372:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4a/0x70 mm/kasan/common.c:45
kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
____kasan_slab_free+0x125/0x160 mm/kasan/common.c:365
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
kasan_slab_free include/linux/kasan.h:193 [inline]
slab_free_hook mm/slub.c:1728 [inline]
slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1754
slab_free mm/slub.c:3526 [inline]
kfree+0xc4/0x270 mm/slub.c:4588
gadget_info_attr_release+0xcb/0xf0 drivers/usb/gadget/configfs.c:429
config_item_cleanup fs/configfs/item.c:128 [inline]
config_item_release fs/configfs/item.c:137 [inline]
kref_put include/linux/kref.h:65 [inline]
config_item_put+0x158/0x210 fs/configfs/item.c:149
gadgets_drop+0x23/0xd0 drivers/usb/gadget/configfs.c:1900
client_drop_item+0x94/0xc0 fs/configfs/dir.c:962
configfs_mkdir+0x7f1/0x9c0 fs/configfs/dir.c:1440
vfs_mkdir+0x38b/0x590 fs/namei.c:4073
do_mkdirat+0x174/0x4d0 fs/namei.c:4098
__do_sys_mkdirat fs/namei.c:4113 [inline]
__se_sys_mkdirat fs/namei.c:4111 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4111
x64_sys_call+0x37e/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
The buggy address belongs to the object at ffff88810fd0d000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1360 bytes inside of
2048-byte region [ffff88810fd0d000, ffff88810fd0d800)
The buggy address belongs to the page:
page:ffffea00043f4200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10fd08
head:ffffea00043f4200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100043200
raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 372, ts 29237740193, free_ts 29190065906
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2610
prep_new_page+0x1c/0x110 mm/page_alloc.c:2616
get_page_from_freelist+0x2d42/0x2dd0 mm/page_alloc.c:4492
__alloc_pages+0x1a2/0x460 mm/page_alloc.c:5829
alloc_slab_page mm/slub.c:-1 [inline]
allocate_slab mm/slub.c:1937 [inline]
new_slab+0xa0/0x4d0 mm/slub.c:2000
___slab_alloc+0x3ac/0x840 mm/slub.c:3033
__slab_alloc+0x49/0x90 mm/slub.c:3120
slab_alloc_node mm/slub.c:3211 [inline]
slab_alloc mm/slub.c:3255 [inline]
kmem_cache_alloc_trace+0x146/0x270 mm/slub.c:3272
kmalloc include/linux/slab.h:619 [inline]
kzalloc include/linux/slab.h:750 [inline]
alloc_super+0x5e/0x840 fs/super.c:203
sget_fc+0x2c9/0x700 fs/super.c:554
vfs_get_super fs/super.c:1178 [inline]
get_tree_nodev+0x2a/0x160 fs/super.c:1213
proc_get_tree+0x1c/0x20 fs/proc/root.c:229
vfs_get_tree+0x89/0x260 fs/super.c:1541
do_new_mount+0x251/0xb40 fs/namespace.c:3037
path_mount+0x640/0xff0 fs/namespace.c:3367
do_mount fs/namespace.c:3380 [inline]
__do_sys_mount fs/namespace.c:3588 [inline]
__se_sys_mount+0x320/0x390 fs/namespace.c:3565
page last free stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1477 [inline]
free_pcp_prepare mm/page_alloc.c:1549 [inline]
free_unref_page_prepare+0x5fa/0x600 mm/page_alloc.c:3540
free_unref_page+0xae/0x540 mm/page_alloc.c:3622
free_the_page mm/page_alloc.c:808 [inline]
__free_pages+0x6c/0x100 mm/page_alloc.c:5905
__free_slab+0xe5/0x1e0 mm/slub.c:2025
free_slab mm/slub.c:2040 [inline]
discard_slab mm/slub.c:2046 [inline]
__unfreeze_partials+0x15a/0x190 mm/slub.c:2532
put_cpu_partial+0xc6/0x120 mm/slub.c:2612
__slab_free+0x1d4/0x290 mm/slub.c:3395
do_slab_free mm/slub.c:3514 [inline]
___cache_free+0x104/0x120 mm/slub.c:3535
qlink_free+0x4d/0x90 mm/kasan/quarantine.c:157
qlist_free_all+0x5f/0xb0 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x14a/0x170 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:443
kasan_slab_alloc include/linux/kasan.h:217 [inline]
slab_post_alloc_hook+0x4f/0x2b0 mm/slab.h:550
slab_alloc_node mm/slub.c:3245 [inline]
slab_alloc mm/slub.c:3255 [inline]
kmem_cache_alloc+0xf7/0x260 mm/slub.c:3260
kmem_cache_alloc_node include/linux/slab.h:492 [inline]
__alloc_skb+0xe4/0x730 net/core/skbuff.c:416
alloc_skb include/linux/skbuff.h:1183 [inline]
nlmsg_new include/net/netlink.h:953 [inline]
rtmsg_ifinfo_build_skb+0x75/0x180 net/core/rtnetlink.c:3896
Memory state around the buggy address:
ffff88810fd0d400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88810fd0d480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88810fd0d500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88810fd0d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88810fd0d600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: ff c3 inc %ebx
2: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
9: 00 00 00
c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
11: 48 89 f8 mov %rdi,%rax
14: 48 89 f7 mov %rsi,%rdi
17: 48 89 d6 mov %rdx,%rsi
1a: 48 89 ca mov %rcx,%rdx
1d: 4d 89 c2 mov %r8,%r10
20: 4d 89 c8 mov %r9,%r8
23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9
28: 0f 05 syscall
* 2a: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction
30: 73 01 jae 0x33
32: c3 ret
33: 48 c7 c1 e8 ff ff ff mov $0xffffffffffffffe8,%rcx
3a: f7 d8 neg %eax
3c: 64 89 01 mov %eax,%fs:(%rcx)
3f: 48 rex.W