Extracting prog: 4m57.327112045s
Minimizing prog: 31m50.205390631s
Simplifying prog options: 3m9.565009283s
Extracting C: 2m18.60727755s
Simplifying C: 8m20.675700524s


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:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ftruncate-mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
ftruncate(0xffffffffffffffff, 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ftruncate-mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
ftruncate(0xffffffffffffffff, 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in ep_open
single: successfully extracted reproducer
found reproducer with 7 syscalls
minimizing guilty program
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ftruncate-mkdirat-mount-openat-write-openat
detailed listing:
executing program 0:
ftruncate(0xffffffffffffffff, 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)

program did not crash
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ftruncate-mkdirat-mount-openat-write-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
ftruncate(0xffffffffffffffff, 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ftruncate-mkdirat-mount-openat-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
ftruncate(0xffffffffffffffff, 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ftruncate-mkdirat-mount-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
ftruncate(0xffffffffffffffff, 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ftruncate-mkdirat-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
ftruncate(0xffffffffffffffff, 0x3)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ftruncate-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
ftruncate(0xffffffffffffffff, 0x3)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in ep_open
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200), 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
testing program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, 0x0, 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=2m9.283431364s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
program did not crash
simplifying guilty program options
testing program (duration=2m9.283431364s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in ep_open
extracting C reproducer
testing compiled C program (duration=2m9.283431364s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
program crashed: KASAN: slab-use-after-free Read in ep_open
simplifying C reproducer
testing compiled C program (duration=2m9.283431364s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
program did not crash
testing compiled C program (duration=2m9.283431364s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
program crashed: KASAN: slab-use-after-free Read in ep_open
testing compiled C program (duration=2m9.283431364s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
program crashed: KASAN: slab-use-after-free Read in ep_open
testing compiled C program (duration=2m9.283431364s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
program crashed: KASAN: slab-use-after-free Read in ep_open
testing compiled C program (duration=2m9.283431364s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
program crashed: KASAN: slab-use-after-free Read in ep_open
testing compiled C program (duration=2m9.283431364s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
program crashed: KASAN: slab-use-after-free Read in ep_open
testing program (duration=2m9.283431364s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in ep_open
validation run: crashed=true
testing program (duration=2m9.283431364s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in ep_open
validation run: crashed=true
testing program (duration=2m9.283431364s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./gadget\x00', &(0x7f0000000180)='gadgetfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r0, &(0x7f0000000200)="000000000902190001010080320904000001ff000000070581024000000902190001010080320904000001ff00000007058102000200120100020000004034127856000100000001", 0x48)
openat(0xffffffffffffff9c, &(0x7f0000000000)='./gadget/ep1in-bulk\x00', 0x2, 0x24)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in ep_open
validation run: crashed=true
reproducing took 55m49.929694239s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in __mutex_lock_common kernel/locking/mutex.c:625 [inline]
BUG: KASAN: slab-use-after-free in __mutex_lock+0x14e/0x15a0 kernel/locking/mutex.c:821
Read of size 8 at addr ffff8880262d5858 by task syz.2.656/6599

CPU: 1 UID: 0 PID: 6599 Comm: syz.2.656 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description+0x55/0x1e0 mm/kasan/report.c:378
 print_report+0x58/0x70 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 __mutex_lock_common kernel/locking/mutex.c:625 [inline]
 __mutex_lock+0x14e/0x15a0 kernel/locking/mutex.c:821
 ep_open+0x4e/0x270 drivers/usb/gadget/legacy/inode.c:953
 do_dentry_open+0x80e/0x1360 fs/open.c:1000
 vfs_open_consume+0x4a/0x350 fs/open.c:1131
 do_open fs/namei.c:4846 [inline]
 path_openat+0x14a6/0x1da0 fs/namei.c:5011
 do_file_open+0x23e/0x4a0 fs/namei.c:5040
 do_sys_openat2+0x115/0x200 fs/open.c:1442
 do_sys_open fs/open.c:1448 [inline]
 __do_sys_openat fs/open.c:1464 [inline]
 __se_sys_openat fs/open.c:1459 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1459
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feef939e199
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:00007ffe66fe1b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007feef9625fa0 RCX: 00007feef939e199
RDX: 0000000000000002 RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007feef94358e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000024 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feef9625fac R14: 00007feef9625fa0 R15: 00007feef9625fa0
 </TASK>

Allocated by task 6597:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:409 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:426
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x31c/0x600 mm/slub.c:5680
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 _kzalloc_noprof include/linux/slab.h:1312 [inline]
 activate_ep_files drivers/usb/gadget/legacy/inode.c:1732 [inline]
 gadgetfs_bind+0x277/0xad0 drivers/usb/gadget/legacy/inode.c:1823
 gadget_bind_driver+0x2ca/0x9e0 drivers/usb/gadget/udc/core.c:1663
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x254/0xae0 drivers/base/dd.c:706
 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868
 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898
 __driver_attach+0x339/0x600 drivers/base/dd.c:1292
 bus_for_each_dev+0x23b/0x2c0 drivers/base/bus.c:386
 bus_add_driver+0x38f/0x6e0 drivers/base/bus.c:771
 driver_register+0x23a/0x320 drivers/base/driver.c:174
 usb_gadget_register_driver_owner+0xf9/0x270 drivers/usb/gadget/udc/core.c:1753
 dev_config+0xe3c/0x12a0 drivers/usb/gadget/legacy/inode.c:2014
 vfs_write+0x296/0xba0 fs/read_write.c:685
 ksys_write+0x150/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 6597:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:264 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2780 [inline]
 slab_free mm/slub.c:6630 [inline]
 kfree+0x1c5/0x650 mm/slub.c:6923
 destroy_ep_files+0x29f/0x330 drivers/usb/gadget/legacy/inode.c:1713
 gadgetfs_unbind+0x109/0x2b0 drivers/usb/gadget/legacy/inode.c:1786
 gadget_unbind_driver+0x1cb/0x410 drivers/usb/gadget/udc/core.c:1725
 device_remove drivers/base/dd.c:616 [inline]
 __device_release_driver drivers/base/dd.c:1349 [inline]
 device_release_driver_internal+0x48b/0x880 drivers/base/dd.c:1372
 driver_detach+0x1f3/0x2d0 drivers/base/dd.c:1435
 bus_remove_driver+0x226/0x320 drivers/base/bus.c:840
 usb_gadget_unregister_driver+0x4e/0x70 drivers/usb/gadget/udc/core.c:1785
 dev_release+0x83/0x200 drivers/usb/gadget/legacy/inode.c:1328
 __fput+0x413/0xa50 fs/file_table.c:513
 fput_close_sync+0x11f/0x240 fs/file_table.c:618
 filp_close_sync+0x6e/0xa0 fs/open.c:1573
 __range_close fs/file.c:919 [inline]
 __do_sys_close_range fs/file.c:1003 [inline]
 __se_sys_close_range+0xa77/0xef0 fs/file.c:954
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff8880262d5800
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 88 bytes inside of
 freed 512-byte region [ffff8880262d5800, ffff8880262d5a00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x262d4
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88813ff24c80 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88813ff24c80 dead000000000100 dead000000000122
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffffffffffff01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 5569073144
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1854
 prep_new_page mm/page_alloc.c:1862 [inline]
 get_page_from_freelist+0x220f/0x2280 mm/page_alloc.c:3933
 __alloc_frozen_pages_noprof+0x1fc/0x400 mm/page_alloc.c:5471
 alloc_slab_page mm/slub.c:3384 [inline]
 allocate_slab+0x7d/0x5e0 mm/slub.c:3499
 new_slab mm/slub.c:3550 [inline]
 refill_objects+0x2d5/0x350 mm/slub.c:7539
 refill_sheaf mm/slub.c:2917 [inline]
 __pcs_replace_empty_main+0x2c8/0x6c0 mm/slub.c:4811
 alloc_from_pcs mm/slub.c:4887 [inline]
 slab_alloc_node mm/slub.c:5021 [inline]
 __kmalloc_cache_noprof+0x396/0x600 mm/slub.c:5676
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 _kzalloc_noprof include/linux/slab.h:1312 [inline]
 find_valid_gpt block/partitions/efi.c:598 [inline]
 efi_partition+0x2f1/0x3330 block/partitions/efi.c:719
 check_partition block/partitions/core.c:143 [inline]
 blk_add_partitions block/partitions/core.c:591 [inline]
 bdev_disk_changed+0x851/0x17a0 block/partitions/core.c:695
 blkdev_get_whole+0x372/0x510 block/bdev.c:793
 bdev_open+0x324/0xd70 block/bdev.c:1002
 bdev_file_open_by_dev+0x1be/0x240 block/bdev.c:1104
 disk_scan_partitions+0x1bb/0x2c0 block/genhd.c:387
 add_disk_final block/genhd.c:412 [inline]
 add_disk_fwnode+0x24b/0x3a0 block/genhd.c:613
 add_disk include/linux/blkdev.h:801 [inline]
 brd_alloc+0x5a9/0x7c0 drivers/block/brd.c:340
 brd_init+0xc1/0x120 drivers/block/brd.c:420
page_owner free stack trace missing

Memory state around the buggy address:
 ffff8880262d5700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880262d5780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880262d5800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff8880262d5880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880262d5900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in __mutex_lock_common kernel/locking/mutex.c:625 [inline]
BUG: KASAN: slab-use-after-free in __mutex_lock+0x14e/0x15a0 kernel/locking/mutex.c:821
Read of size 8 at addr ffff8880262d5858 by task syz.2.656/6599

CPU: 1 UID: 0 PID: 6599 Comm: syz.2.656 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description+0x55/0x1e0 mm/kasan/report.c:378
 print_report+0x58/0x70 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 __mutex_lock_common kernel/locking/mutex.c:625 [inline]
 __mutex_lock+0x14e/0x15a0 kernel/locking/mutex.c:821
 ep_open+0x4e/0x270 drivers/usb/gadget/legacy/inode.c:953
 do_dentry_open+0x80e/0x1360 fs/open.c:1000
 vfs_open_consume+0x4a/0x350 fs/open.c:1131
 do_open fs/namei.c:4846 [inline]
 path_openat+0x14a6/0x1da0 fs/namei.c:5011
 do_file_open+0x23e/0x4a0 fs/namei.c:5040
 do_sys_openat2+0x115/0x200 fs/open.c:1442
 do_sys_open fs/open.c:1448 [inline]
 __do_sys_openat fs/open.c:1464 [inline]
 __se_sys_openat fs/open.c:1459 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1459
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feef939e199
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:00007ffe66fe1b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007feef9625fa0 RCX: 00007feef939e199
RDX: 0000000000000002 RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007feef94358e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000024 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feef9625fac R14: 00007feef9625fa0 R15: 00007feef9625fa0
 </TASK>

Allocated by task 6597:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:409 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:426
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x31c/0x600 mm/slub.c:5680
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 _kzalloc_noprof include/linux/slab.h:1312 [inline]
 activate_ep_files drivers/usb/gadget/legacy/inode.c:1732 [inline]
 gadgetfs_bind+0x277/0xad0 drivers/usb/gadget/legacy/inode.c:1823
 gadget_bind_driver+0x2ca/0x9e0 drivers/usb/gadget/udc/core.c:1663
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x254/0xae0 drivers/base/dd.c:706
 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868
 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898
 __driver_attach+0x339/0x600 drivers/base/dd.c:1292
 bus_for_each_dev+0x23b/0x2c0 drivers/base/bus.c:386
 bus_add_driver+0x38f/0x6e0 drivers/base/bus.c:771
 driver_register+0x23a/0x320 drivers/base/driver.c:174
 usb_gadget_register_driver_owner+0xf9/0x270 drivers/usb/gadget/udc/core.c:1753
 dev_config+0xe3c/0x12a0 drivers/usb/gadget/legacy/inode.c:2014
 vfs_write+0x296/0xba0 fs/read_write.c:685
 ksys_write+0x150/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 6597:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:264 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2780 [inline]
 slab_free mm/slub.c:6630 [inline]
 kfree+0x1c5/0x650 mm/slub.c:6923
 destroy_ep_files+0x29f/0x330 drivers/usb/gadget/legacy/inode.c:1713
 gadgetfs_unbind+0x109/0x2b0 drivers/usb/gadget/legacy/inode.c:1786
 gadget_unbind_driver+0x1cb/0x410 drivers/usb/gadget/udc/core.c:1725
 device_remove drivers/base/dd.c:616 [inline]
 __device_release_driver drivers/base/dd.c:1349 [inline]
 device_release_driver_internal+0x48b/0x880 drivers/base/dd.c:1372
 driver_detach+0x1f3/0x2d0 drivers/base/dd.c:1435
 bus_remove_driver+0x226/0x320 drivers/base/bus.c:840
 usb_gadget_unregister_driver+0x4e/0x70 drivers/usb/gadget/udc/core.c:1785
 dev_release+0x83/0x200 drivers/usb/gadget/legacy/inode.c:1328
 __fput+0x413/0xa50 fs/file_table.c:513
 fput_close_sync+0x11f/0x240 fs/file_table.c:618
 filp_close_sync+0x6e/0xa0 fs/open.c:1573
 __range_close fs/file.c:919 [inline]
 __do_sys_close_range fs/file.c:1003 [inline]
 __se_sys_close_range+0xa77/0xef0 fs/file.c:954
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff8880262d5800
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 88 bytes inside of
 freed 512-byte region [ffff8880262d5800, ffff8880262d5a00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x262d4
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88813ff24c80 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88813ff24c80 dead000000000100 dead000000000122
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffffffffffff01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 5569073144
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1854
 prep_new_page mm/page_alloc.c:1862 [inline]
 get_page_from_freelist+0x220f/0x2280 mm/page_alloc.c:3933
 __alloc_frozen_pages_noprof+0x1fc/0x400 mm/page_alloc.c:5471
 alloc_slab_page mm/slub.c:3384 [inline]
 allocate_slab+0x7d/0x5e0 mm/slub.c:3499
 new_slab mm/slub.c:3550 [inline]
 refill_objects+0x2d5/0x350 mm/slub.c:7539
 refill_sheaf mm/slub.c:2917 [inline]
 __pcs_replace_empty_main+0x2c8/0x6c0 mm/slub.c:4811
 alloc_from_pcs mm/slub.c:4887 [inline]
 slab_alloc_node mm/slub.c:5021 [inline]
 __kmalloc_cache_noprof+0x396/0x600 mm/slub.c:5676
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 _kzalloc_noprof include/linux/slab.h:1312 [inline]
 find_valid_gpt block/partitions/efi.c:598 [inline]
 efi_partition+0x2f1/0x3330 block/partitions/efi.c:719
 check_partition block/partitions/core.c:143 [inline]
 blk_add_partitions block/partitions/core.c:591 [inline]
 bdev_disk_changed+0x851/0x17a0 block/partitions/core.c:695
 blkdev_get_whole+0x372/0x510 block/bdev.c:793
 bdev_open+0x324/0xd70 block/bdev.c:1002
 bdev_file_open_by_dev+0x1be/0x240 block/bdev.c:1104
 disk_scan_partitions+0x1bb/0x2c0 block/genhd.c:387
 add_disk_final block/genhd.c:412 [inline]
 add_disk_fwnode+0x24b/0x3a0 block/genhd.c:613
 add_disk include/linux/blkdev.h:801 [inline]
 brd_alloc+0x5a9/0x7c0 drivers/block/brd.c:340
 brd_init+0xc1/0x120 drivers/block/brd.c:420
page_owner free stack trace missing

Memory state around the buggy address:
 ffff8880262d5700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880262d5780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880262d5800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff8880262d5880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880262d5900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================