Extracting prog: 2m28.620216755s
Minimizing prog: 4m17.252975919s
Simplifying prog options: 0s
Extracting C: 18.968735653s
Simplifying C: 3m34.702607155s


extracting reproducer from 14 programs
testing a last program of every proc
single: executing 4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$sndtimer-ioctl$SNDRV_TIMER_IOCTL_SELECT-read-mmap-ioctl$SNDRV_TIMER_IOCTL_CONTINUE
detailed listing:
executing program 0:
r0 = openat$sndtimer(0xffffffffffffff9c, &(0x7f0000000000), 0x0)
ioctl$SNDRV_TIMER_IOCTL_SELECT(r0, 0x40345410, &(0x7f00000083c0)={{0x1}})
read(r0, &(0x7f00000003c0)=""/4096, 0x1000)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x0, 0x4008132, 0xffffffffffffffff, 0x0)
ioctl$SNDRV_TIMER_IOCTL_CONTINUE(r0, 0x54a2)

program did not crash
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-gettid-timer_create-pipe-timer_settime-close-syz_usb_control_io$uac1-syz_usb_control_io
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x40, 0x1038, 0x12b6, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x0, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0x7}}}}]}}]}}, 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
r1 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x4, @tid=r1}, &(0x7f0000bbdffc)=<r2=>0x0)
pipe(&(0x7f0000000080))
timer_settime(r2, 0x1, &(0x7f0000000340)={{0x0, 0x989680}, {0x0, 0x3938700}}, 0x0)
close(0xffffffffffffffff)
syz_usb_control_io$uac1(0xffffffffffffffff, 0x0, 0x0)
syz_usb_control_io(r0, &(0x7f0000000200)={0x2c, &(0x7f0000000080)={0x0, 0x10, 0x5, {0x5, 0x4, "c46c32"}}, 0x0, 0x0, 0x0, 0x0}, 0x0)

program did not crash
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-pipe-socketpair$unix-pipe-splice-splice-timer_settime-close-ioctl$EXT4_IOC_GROUP_ADD
detailed listing:
executing program 0:
r0 = gettid()
timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000bbdffc))
pipe(&(0x7f0000000000)={<r1=>0xffffffffffffffff, <r2=>0xffffffffffffffff})
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000940)={0xffffffffffffffff, <r3=>0xffffffffffffffff})
pipe(&(0x7f0000000080)={0xffffffffffffffff, <r4=>0xffffffffffffffff})
splice(r3, 0x0, r4, 0x0, 0xf39, 0x0)
splice(r1, 0x0, r4, 0x0, 0x80, 0x4)
timer_settime(0x0, 0x1, &(0x7f0000000340)={{0x0, 0x989680}, {0x0, 0x3938700}}, 0x0)
close(r2)
ioctl$EXT4_IOC_GROUP_ADD(0xffffffffffffffff, 0x40286608, 0x0)

program did not crash
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x2, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x100, 0x0, 0x0, 0x0, 0x40, 0x56a, 0xf8, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x4, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x3, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0xb}}, {{{0x9, 0x5, 0x81, 0x3, 0x0, 0x56, 0xff}}}}}]}}]}}, 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000200)={0x24, 0x0, 0x0, &(0x7f0000000000)={0x0, 0x22, 0xb, {[@main=@item_012={0x0, 0x0, 0xb}, @global=@item_4={0x3, 0x1, 0xa, "12010024"}, @main=@item_4={0x3, 0x0, 0x8, "796afdd4"}]}}, 0x0}, 0x0)

program crashed: UBSAN: shift-out-of-bounds in __kfifo_alloc
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x2, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x100, 0x0, 0x0, 0x0, 0x40, 0x56a, 0xf8, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x4, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x3, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0xb}}, {{{0x9, 0x5, 0x81, 0x3, 0x0, 0x56, 0xff}}}}}]}}]}}, 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)

program did not crash
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x2, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x100, 0x0, 0x0, 0x0, 0x40, 0x56a, 0xf8, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x4, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x3, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0xb}}, {{{0x9, 0x5, 0x81, 0x3, 0x0, 0x56, 0xff}}}}}]}}]}}, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000200)={0x24, 0x0, 0x0, &(0x7f0000000000)={0x0, 0x22, 0xb, {[@main=@item_012={0x0, 0x0, 0xb}, @global=@item_4={0x3, 0x1, 0xa, "12010024"}, @main=@item_4={0x3, 0x0, 0x8, "796afdd4"}]}}, 0x0}, 0x0)

program did not crash
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_control_io$hid-syz_usb_control_io$hid
detailed listing:
executing program 0:
syz_usb_control_io$hid(0xffffffffffffffff, 0x0, 0x0)
syz_usb_control_io$hid(0xffffffffffffffff, &(0x7f0000000200)={0x24, 0x0, 0x0, &(0x7f0000000000)={0x0, 0x22, 0xb, {[@main=@item_012={0x0, 0x0, 0xb}, @global=@item_4={0x3, 0x1, 0xa, "12010024"}, @main=@item_4={0x3, 0x0, 0x8, "796afdd4"}]}}, 0x0}, 0x0)

program did not crash
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x2, 0x0, 0x0, 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000200)={0x24, 0x0, 0x0, &(0x7f0000000000)={0x0, 0x22, 0xb, {[@main=@item_012={0x0, 0x0, 0xb}, @global=@item_4={0x3, 0x1, 0xa, "12010024"}, @main=@item_4={0x3, 0x0, 0x8, "796afdd4"}]}}, 0x0}, 0x0)

program did not crash
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x2, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x100, 0x0, 0x0, 0x0, 0x40, 0x56a, 0xf8, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x4, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x3, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0xb}}, {{{0x9, 0x5, 0x81, 0x3, 0x0, 0x56, 0xff}}}}}]}}]}}, 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)

program did not crash
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x2, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x100, 0x0, 0x0, 0x0, 0x40, 0x56a, 0xf8, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x4, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x3, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0xb}}, {{{0x9, 0x5, 0x81, 0x3, 0x0, 0x56, 0xff}}}}}]}}]}}, 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000200)={0x24, 0x0, 0x0, 0x0, 0x0}, 0x0)

program did not crash
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x2, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x100, 0x0, 0x0, 0x0, 0x40, 0x56a, 0xf8, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x4, [{{0x9, 0x4, 0x0, 0x0, 0x1, 0x3, 0x0, 0x3, 0x0, {0x9, 0x21, 0x0, 0x0, 0x1, {0x22, 0xb}}, {{{0x9, 0x5, 0x81, 0x3, 0x0, 0x56, 0xff}}}}}]}}]}}, 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f0000000200)={0x24, 0x0, 0x0, &(0x7f0000000000), 0x0}, 0x0)

program did not crash
extracting C reproducer
testing compiled C 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
program crashed: UBSAN: shift-out-of-bounds in __kfifo_alloc
simplifying C reproducer
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
program crashed: UBSAN: shift-out-of-bounds in __kfifo_alloc
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
program crashed: UBSAN: shift-out-of-bounds in __kfifo_alloc
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
program crashed: UBSAN: shift-out-of-bounds in __kfifo_alloc
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
program crashed: UBSAN: shift-out-of-bounds in __kfifo_alloc
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
program crashed: UBSAN: shift-out-of-bounds in __kfifo_alloc
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
program crashed: UBSAN: shift-out-of-bounds in __kfifo_alloc
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid
program crashed: UBSAN: shift-out-of-bounds in __kfifo_alloc
reproducing took 10m39.54455983s
repro crashed as (corrupted=false):
usb 5-1: New USB device found, idVendor=056a, idProduct=00f8, bcdDevice= 0.00
usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 5-1: config 0 descriptor??
------------[ cut here ]------------
UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13
shift exponent 64 is too large for 64-bit type 'long unsigned int'
CPU: 0 UID: 0 PID: 835 Comm: kworker/0:2 Not tainted 6.14.0-syzkaller-03565-gf6e0150b2003 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120
 ubsan_epilogue lib/ubsan.c:231 [inline]
 __ubsan_handle_shift_out_of_bounds+0x27f/0x420 lib/ubsan.c:492
 __roundup_pow_of_two include/linux/log2.h:57 [inline]
 __kfifo_alloc.cold+0x18/0x1d lib/kfifo.c:32
 wacom_devm_kfifo_alloc drivers/hid/wacom_sys.c:1308 [inline]
 wacom_parse_and_register+0x28e/0x5d10 drivers/hid/wacom_sys.c:2368
 wacom_probe+0xa1c/0xe10 drivers/hid/wacom_sys.c:2867
 __hid_device_probe drivers/hid/hid-core.c:2717 [inline]
 hid_device_probe+0x354/0x710 drivers/hid/hid-core.c:2754
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x156/0x1e0 drivers/base/bus.c:462
 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537
 device_add+0x1148/0x1a70 drivers/base/core.c:3666
 hid_add_device+0x373/0xa60 drivers/hid/hid-core.c:2900
 usbhid_probe+0xd38/0x13f0 drivers/hid/usbhid/hid-core.c:1432
 usb_probe_interface+0x300/0x9c0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x156/0x1e0 drivers/base/bus.c:462
 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537
 device_add+0x1148/0x1a70 drivers/base/core.c:3666
 usb_set_configuration+0x1187/0x1e20 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:250
 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x156/0x1e0 drivers/base/bus.c:462
 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537
 device_add+0x1148/0x1a70 drivers/base/core.c:3666
 usb_new_device+0xd07/0x1a20 drivers/usb/core/hub.c:2663
 hub_port_connect drivers/usb/core/hub.c:5533 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
 port_event drivers/usb/core/hub.c:5833 [inline]
 hub_event+0x2eb7/0x4fa0 drivers/usb/core/hub.c:5915
 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c1/0xef0 kernel/workqueue.c:3400
 kthread+0x3a4/0x760 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
---[ end trace ]---

final repro crashed as (corrupted=false):
usb 5-1: New USB device found, idVendor=056a, idProduct=00f8, bcdDevice= 0.00
usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 5-1: config 0 descriptor??
------------[ cut here ]------------
UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13
shift exponent 64 is too large for 64-bit type 'long unsigned int'
CPU: 0 UID: 0 PID: 835 Comm: kworker/0:2 Not tainted 6.14.0-syzkaller-03565-gf6e0150b2003 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120
 ubsan_epilogue lib/ubsan.c:231 [inline]
 __ubsan_handle_shift_out_of_bounds+0x27f/0x420 lib/ubsan.c:492
 __roundup_pow_of_two include/linux/log2.h:57 [inline]
 __kfifo_alloc.cold+0x18/0x1d lib/kfifo.c:32
 wacom_devm_kfifo_alloc drivers/hid/wacom_sys.c:1308 [inline]
 wacom_parse_and_register+0x28e/0x5d10 drivers/hid/wacom_sys.c:2368
 wacom_probe+0xa1c/0xe10 drivers/hid/wacom_sys.c:2867
 __hid_device_probe drivers/hid/hid-core.c:2717 [inline]
 hid_device_probe+0x354/0x710 drivers/hid/hid-core.c:2754
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x156/0x1e0 drivers/base/bus.c:462
 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537
 device_add+0x1148/0x1a70 drivers/base/core.c:3666
 hid_add_device+0x373/0xa60 drivers/hid/hid-core.c:2900
 usbhid_probe+0xd38/0x13f0 drivers/hid/usbhid/hid-core.c:1432
 usb_probe_interface+0x300/0x9c0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x156/0x1e0 drivers/base/bus.c:462
 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537
 device_add+0x1148/0x1a70 drivers/base/core.c:3666
 usb_set_configuration+0x1187/0x1e20 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:250
 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x156/0x1e0 drivers/base/bus.c:462
 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1030
 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537
 device_add+0x1148/0x1a70 drivers/base/core.c:3666
 usb_new_device+0xd07/0x1a20 drivers/usb/core/hub.c:2663
 hub_port_connect drivers/usb/core/hub.c:5533 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
 port_event drivers/usb/core/hub.c:5833 [inline]
 hub_event+0x2eb7/0x4fa0 drivers/usb/core/hub.c:5915
 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c1/0xef0 kernel/workqueue.c:3400
 kthread+0x3a4/0x760 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
---[ end trace ]---