Extracting prog: 1m15.793000519s
Minimizing prog: 20m17.492177722s
Simplifying prog options: 4m53.850434808s
Extracting C: 33.868321102s
Simplifying C: 0s


extracting reproducer from 30 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/usb_gadget/g1\x00', 0x1ff)

program crashed: KASAN: use-after-free Read in gadgets_drop
single: successfully extracted reproducer
found reproducer with 9 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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
write(0xffffffffffffffff, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', 0x0, 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, 0x0, 0x0)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0), 0x0)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(&(0x7f0000000400), &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(0x0, &(0x7f0000000440)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-write-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-write-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='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-syz_open_procfs$pagemap-add_key$keyring-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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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-syz_open_procfs$pagemap-add_key$keyring-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-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/usb_gadget/g1\x00', 0x1ff)

program did not crash
testing 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-write-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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: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-write-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
program did not crash
testing 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-write-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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: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-write-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/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: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-write-syz_open_procfs$pagemap-add_key$keyring-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./proc\x00', &(0x7f0000000340)='proc\x00', 0x4000, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000380)='./proc/thread-self/fail-nth\x00', 0x2, 0x0)
write(r0, &(0x7f00000003c0)='100', 0x3)
syz_open_procfs$pagemap(0x0, 0x0)
add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./my_configfs\x00', &(0x7f00000002c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./my_configfs/usb_gadget/g1\x00', 0x1ff)

program crashed: KASAN: use-after-free Read in gadgets_drop
validation run: crashed=true
reproducing took 29m34.671975801s
repro crashed as (corrupted=false):
RDX: 00000000000001ff RSI: 0000200000000300 RDI: ffffffffffffff9c
RBP: 00007f3e89637af8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3e89825fac R14: 00007f3e89825fa0 R15: 00007f3e89825fa0
 </TASK>
==================================================================
BUG: KASAN: use-after-free in android_device_destroy drivers/usb/gadget/configfs.c:1815 [inline]
BUG: KASAN: use-after-free in gadgets_drop+0x40/0xd0 drivers/usb/gadget/configfs.c:1904
Read of size 8 at addr ffff888113ec4540 by task syz.2.18/376

CPU: 0 PID: 376 Comm: syz.2.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:351
 android_device_destroy drivers/usb/gadget/configfs.c:1815 [inline]
 gadgets_drop+0x40/0xd0 drivers/usb/gadget/configfs.c:1904
 client_drop_item+0xa2/0xd0 fs/configfs/dir.c:933
 configfs_mkdir+0x811/0x9e0 fs/configfs/dir.c:1413
 vfs_mkdir+0x39c/0x580 fs/namei.c:4113
 do_mkdirat+0x174/0x4d0 fs/namei.c:4138
 __do_sys_mkdirat fs/namei.c:4153 [inline]
 __se_sys_mkdirat fs/namei.c:4151 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
 x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3e8959fb19
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:00007ffd735b5858 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f3e89825fa0 RCX: 00007f3e8959fb19
RDX: 00000000000001ff RSI: 0000200000000300 RDI: ffffffffffffff9c
RBP: 00007f3e89637af8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3e89825fac R14: 00007f3e89825fa0 R15: 00007f3e89825fa0
 </TASK>

Allocated by task 376:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:380 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 kmalloc_trace+0x40/0xb0 mm/slab_common.c:1033
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 gadgets_make+0x57/0xad0 drivers/usb/gadget/configfs.c:1835
 configfs_mkdir+0x518/0x9e0 fs/configfs/dir.c:1329
 vfs_mkdir+0x39c/0x580 fs/namei.c:4113
 do_mkdirat+0x174/0x4d0 fs/namei.c:4138
 __do_sys_mkdirat fs/namei.c:4153 [inline]
 __se_sys_mkdirat fs/namei.c:4151 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
 x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 376:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1750 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
 slab_free mm/slub.c:3712 [inline]
 __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
 kfree+0x6f/0xf0 mm/slab_common.c:990
 gadget_info_attr_release+0xf5/0x120 drivers/usb/gadget/configfs.c:436
 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+0x166/0x210 fs/configfs/item.c:149
 gadgets_drop+0x23/0xd0 drivers/usb/gadget/configfs.c:1903
 client_drop_item+0xa2/0xd0 fs/configfs/dir.c:933
 configfs_mkdir+0x811/0x9e0 fs/configfs/dir.c:1413
 vfs_mkdir+0x39c/0x580 fs/namei.c:4113
 do_mkdirat+0x174/0x4d0 fs/namei.c:4138
 __do_sys_mkdirat fs/namei.c:4153 [inline]
 __se_sys_mkdirat fs/namei.c:4151 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
 x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff888113ec4000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1344 bytes inside of
 2048-byte region [ffff888113ec4000, ffff888113ec4800)

The buggy address belongs to the physical page:
page:ffffea00044fb000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x113ec0
head:ffffea00044fb000 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 337, tgid 337 (kworker/0:2), ts 33601545387, free_ts 33238695068
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2673
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2680
 get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4587
 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5931
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3e0 mm/slub.c:2020
 ___slab_alloc+0x70f/0xb70 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 __kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423
 __do_kmalloc_node mm/slab_common.c:937 [inline]
 __kmalloc_node_track_caller+0xa1/0x1e0 mm/slab_common.c:958
 kmalloc_reserve net/core/skbuff.c:449 [inline]
 __alloc_skb+0x226/0x4a0 net/core/skbuff.c:518
 alloc_skb include/linux/skbuff.h:1322 [inline]
 mld_newpack+0x143/0xa30 net/ipv6/mcast.c:1745
 add_grhead net/ipv6/mcast.c:1856 [inline]
 add_grec+0xf26/0x13f0 net/ipv6/mcast.c:1994
 mld_send_initial_cr net/ipv6/mcast.c:2241 [inline]
 ipv6_mc_dad_complete+0x25a/0x620 net/ipv6/mcast.c:2252
 addrconf_dad_completed+0x737/0xe80 net/ipv6/addrconf.c:4302
 addrconf_dad_work+0xc1b/0x14a0 net/ipv6/addrconf.c:-1
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1581 [inline]
 free_pcp_prepare mm/page_alloc.c:1655 [inline]
 free_unref_page_prepare+0x81b/0x820 mm/page_alloc.c:3622
 free_unref_page+0x93/0x530 mm/page_alloc.c:3720
 free_the_page mm/page_alloc.c:863 [inline]
 __free_pages+0x67/0x100 mm/page_alloc.c:6021
 __free_slab+0xc7/0x1a0 mm/slub.c:2044
 free_slab mm/slub.c:2059 [inline]
 discard_slab mm/slub.c:2065 [inline]
 __unfreeze_partials+0x15a/0x190 mm/slub.c:2614
 put_cpu_partial+0xa9/0x100 mm/slub.c:2690
 __slab_free+0x1c4/0x280 mm/slub.c:3589
 do_slab_free mm/slub.c:3666 [inline]
 ___cache_free+0xbf/0xd0 mm/slub.c:3722
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0xc6/0x140 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x14a/0x170 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x24/0x80 mm/kasan/common.c:311
 kasan_slab_alloc include/linux/kasan.h:202 [inline]
 slab_post_alloc_hook+0x4f/0x2d0 mm/slab.h:768
 slab_alloc_node mm/slub.c:3382 [inline]
 kmem_cache_alloc_node+0x179/0x330 mm/slub.c:3429
 __alloc_skb+0xe8/0x4a0 net/core/skbuff.c:508
 alloc_skb include/linux/skbuff.h:1322 [inline]
 mld_newpack+0x143/0xa30 net/ipv6/mcast.c:1745
 add_grhead net/ipv6/mcast.c:1856 [inline]
 add_grec+0xf26/0x13f0 net/ipv6/mcast.c:1994

Memory state around the buggy address:
 ffff888113ec4400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888113ec4480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888113ec4500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff888113ec4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888113ec4600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
RDX: 00000000000001ff RSI: 0000200000000300 RDI: ffffffffffffff9c
RBP: 00007f3e89637af8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3e89825fac R14: 00007f3e89825fa0 R15: 00007f3e89825fa0
 </TASK>
==================================================================
BUG: KASAN: use-after-free in android_device_destroy drivers/usb/gadget/configfs.c:1815 [inline]
BUG: KASAN: use-after-free in gadgets_drop+0x40/0xd0 drivers/usb/gadget/configfs.c:1904
Read of size 8 at addr ffff888113ec4540 by task syz.2.18/376

CPU: 0 PID: 376 Comm: syz.2.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:351
 android_device_destroy drivers/usb/gadget/configfs.c:1815 [inline]
 gadgets_drop+0x40/0xd0 drivers/usb/gadget/configfs.c:1904
 client_drop_item+0xa2/0xd0 fs/configfs/dir.c:933
 configfs_mkdir+0x811/0x9e0 fs/configfs/dir.c:1413
 vfs_mkdir+0x39c/0x580 fs/namei.c:4113
 do_mkdirat+0x174/0x4d0 fs/namei.c:4138
 __do_sys_mkdirat fs/namei.c:4153 [inline]
 __se_sys_mkdirat fs/namei.c:4151 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
 x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3e8959fb19
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:00007ffd735b5858 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f3e89825fa0 RCX: 00007f3e8959fb19
RDX: 00000000000001ff RSI: 0000200000000300 RDI: ffffffffffffff9c
RBP: 00007f3e89637af8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3e89825fac R14: 00007f3e89825fa0 R15: 00007f3e89825fa0
 </TASK>

Allocated by task 376:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:380 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 kmalloc_trace+0x40/0xb0 mm/slab_common.c:1033
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 gadgets_make+0x57/0xad0 drivers/usb/gadget/configfs.c:1835
 configfs_mkdir+0x518/0x9e0 fs/configfs/dir.c:1329
 vfs_mkdir+0x39c/0x580 fs/namei.c:4113
 do_mkdirat+0x174/0x4d0 fs/namei.c:4138
 __do_sys_mkdirat fs/namei.c:4153 [inline]
 __se_sys_mkdirat fs/namei.c:4151 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
 x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 376:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1750 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
 slab_free mm/slub.c:3712 [inline]
 __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
 kfree+0x6f/0xf0 mm/slab_common.c:990
 gadget_info_attr_release+0xf5/0x120 drivers/usb/gadget/configfs.c:436
 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+0x166/0x210 fs/configfs/item.c:149
 gadgets_drop+0x23/0xd0 drivers/usb/gadget/configfs.c:1903
 client_drop_item+0xa2/0xd0 fs/configfs/dir.c:933
 configfs_mkdir+0x811/0x9e0 fs/configfs/dir.c:1413
 vfs_mkdir+0x39c/0x580 fs/namei.c:4113
 do_mkdirat+0x174/0x4d0 fs/namei.c:4138
 __do_sys_mkdirat fs/namei.c:4153 [inline]
 __se_sys_mkdirat fs/namei.c:4151 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
 x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff888113ec4000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1344 bytes inside of
 2048-byte region [ffff888113ec4000, ffff888113ec4800)

The buggy address belongs to the physical page:
page:ffffea00044fb000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x113ec0
head:ffffea00044fb000 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 337, tgid 337 (kworker/0:2), ts 33601545387, free_ts 33238695068
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2673
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2680
 get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4587
 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5931
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3e0 mm/slub.c:2020
 ___slab_alloc+0x70f/0xb70 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 __kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423
 __do_kmalloc_node mm/slab_common.c:937 [inline]
 __kmalloc_node_track_caller+0xa1/0x1e0 mm/slab_common.c:958
 kmalloc_reserve net/core/skbuff.c:449 [inline]
 __alloc_skb+0x226/0x4a0 net/core/skbuff.c:518
 alloc_skb include/linux/skbuff.h:1322 [inline]
 mld_newpack+0x143/0xa30 net/ipv6/mcast.c:1745
 add_grhead net/ipv6/mcast.c:1856 [inline]
 add_grec+0xf26/0x13f0 net/ipv6/mcast.c:1994
 mld_send_initial_cr net/ipv6/mcast.c:2241 [inline]
 ipv6_mc_dad_complete+0x25a/0x620 net/ipv6/mcast.c:2252
 addrconf_dad_completed+0x737/0xe80 net/ipv6/addrconf.c:4302
 addrconf_dad_work+0xc1b/0x14a0 net/ipv6/addrconf.c:-1
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1581 [inline]
 free_pcp_prepare mm/page_alloc.c:1655 [inline]
 free_unref_page_prepare+0x81b/0x820 mm/page_alloc.c:3622
 free_unref_page+0x93/0x530 mm/page_alloc.c:3720
 free_the_page mm/page_alloc.c:863 [inline]
 __free_pages+0x67/0x100 mm/page_alloc.c:6021
 __free_slab+0xc7/0x1a0 mm/slub.c:2044
 free_slab mm/slub.c:2059 [inline]
 discard_slab mm/slub.c:2065 [inline]
 __unfreeze_partials+0x15a/0x190 mm/slub.c:2614
 put_cpu_partial+0xa9/0x100 mm/slub.c:2690
 __slab_free+0x1c4/0x280 mm/slub.c:3589
 do_slab_free mm/slub.c:3666 [inline]
 ___cache_free+0xbf/0xd0 mm/slub.c:3722
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0xc6/0x140 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x14a/0x170 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x24/0x80 mm/kasan/common.c:311
 kasan_slab_alloc include/linux/kasan.h:202 [inline]
 slab_post_alloc_hook+0x4f/0x2d0 mm/slab.h:768
 slab_alloc_node mm/slub.c:3382 [inline]
 kmem_cache_alloc_node+0x179/0x330 mm/slub.c:3429
 __alloc_skb+0xe8/0x4a0 net/core/skbuff.c:508
 alloc_skb include/linux/skbuff.h:1322 [inline]
 mld_newpack+0x143/0xa30 net/ipv6/mcast.c:1745
 add_grhead net/ipv6/mcast.c:1856 [inline]
 add_grec+0xf26/0x13f0 net/ipv6/mcast.c:1994

Memory state around the buggy address:
 ffff888113ec4400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888113ec4480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888113ec4500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff888113ec4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888113ec4600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================