Extracting prog: 1m19.261092497s
Minimizing prog: 13m50.922135705s
Simplifying prog options: 2m16.133862346s
Extracting C: 21.189391673s
Simplifying C: 0s
extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs: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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program crashed: KASAN: slab-use-after-free Read in configfs_dirent_is_ready
single: successfully extracted reproducer
found reproducer with 8 syscalls
minimizing guilty program
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
program crashed: lost connection to test machine
ignore low priority crash: lost connection to test machine
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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}}): mount-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', 0x0, 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(0x0, 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, 0x0)
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, 0x0, 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
program crashed: KASAN: slab-use-after-free Write in config_item_get
a never seen crash title: KASAN: slab-use-after-free Write in config_item_get, ignore
simplifying guilty program options
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program crashed: WARNING: refcount bug in config_item_get
a never seen crash title: WARNING: refcount bug in config_item_get, ignore
testing program (duration=39.6135805s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {Threaded:true 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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program did not crash
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program crashed: WARNING: refcount bug in config_item_get
validation run: crashed=true
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program crashed: WARNING: refcount bug in config_item_get
validation run: crashed=true
testing program (duration=39.6135805s, {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-rmdir-mkdirat-mkdirat-mkdirat-symlinkat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
rmdir(&(0x7f0000000340)='./config/usb_gadget/g1/functions/phonet.usb0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0x1ff)
symlinkat(&(0x7f00000001c0)='./config/usb_gadget/g1/functions/phonet.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00')
unlinkat(0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/phonet.usb0\x00', 0x0)
program crashed: WARNING: refcount bug in config_item_get
validation run: crashed=true
reproducing took 19m24.999824476s
repro crashed as (corrupted=false):
------------[ cut here ]------------
refcount_t: addition on 0; use-after-free.
WARNING: lib/refcount.c:25 at refcount_warn_saturate+0x111/0x130 lib/refcount.c:25, CPU#0: syz.1.205/6402
Modules linked in:
CPU: 0 UID: 0 PID: 6402 Comm: syz.1.205 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:refcount_warn_saturate+0x111/0x130 lib/refcount.c:25
Code: 06 e8 33 91 ec fc 48 8d 3d 3c 19 2f 0c 67 48 0f b9 3a e8 22 91 ec fc 5b 5d c3 cc cc cc cc e8 16 91 ec fc 48 8d 3d 2f 19 2f 0c <67> 48 0f b9 3a e8 05 91 ec fc 5b 5d c3 cc cc cc cc 48 89 df e8 b6
RSP: 0018:ffffc900031dfc90 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888022b7f51c RCX: ffffffff851de1bb
RDX: ffff888032820000 RSI: ffffffff851de26a RDI: ffffffff914cfba0
RBP: 0000000000000002 R08: 0000000000000005 R09: 0000000000000004
R10: 0000000000000002 R11: 0000000000000000 R12: ffff888022b7f51c
R13: ffff8880401ac358 R14: ffffc900031dfd40 R15: ffff888035e9e000
FS: 00007f6652eb86c0(0000) GS:ffff8880d5bde000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e06f5da08 CR3: 000000003d010000 CR4: 0000000000352ef0
Call Trace:
__refcount_add include/linux/refcount.h:289 [inline]
__refcount_inc include/linux/refcount.h:366 [inline]
refcount_inc include/linux/refcount.h:383 [inline]
kref_get include/linux/kref.h:45 [inline]
config_item_get fs/configfs/item.c:104 [inline]
config_item_get+0x8c/0xb0 fs/configfs/item.c:101
configfs_get_config_item fs/configfs/configfs_internal.h:127 [inline]
get_target fs/configfs/symlink.c:128 [inline]
configfs_symlink+0x390/0x11f0 fs/configfs/symlink.c:185
vfs_symlink fs/namei.c:5660 [inline]
vfs_symlink+0x178/0x4d0 fs/namei.c:5639
filename_symlinkat+0x2a6/0x560 fs/namei.c:5685
__do_sys_symlinkat fs/namei.c:5705 [inline]
__se_sys_symlinkat fs/namei.c:5700 [inline]
__x64_sys_symlinkat+0x9c/0xe0 fs/namei.c:5700
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6651f9e0d9
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:00007f6652eb8028 EFLAGS: 00000246 ORIG_RAX: 000000000000010a
RAX: ffffffffffffffda RBX: 00007f6652225fa0 RCX: 00007f6651f9e0d9
RDX: 0000200000000200 RSI: ffffffffffffff9c RDI: 00002000000001c0
RBP: 00007f6652035024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6652226038 R14: 00007f6652225fa0 R15: 00007ffd7e1f4b78
----------------
Code disassembly (best guess), 1 bytes skipped:
0: e8 33 91 ec fc call 0xfcec9138
5: 48 8d 3d 3c 19 2f 0c lea 0xc2f193c(%rip),%rdi # 0xc2f1948
c: 67 48 0f b9 3a ud1 (%edx),%rdi
11: e8 22 91 ec fc call 0xfcec9138
16: 5b pop %rbx
17: 5d pop %rbp
18: c3 ret
19: cc int3
1a: cc int3
1b: cc int3
1c: cc int3
1d: e8 16 91 ec fc call 0xfcec9138
22: 48 8d 3d 2f 19 2f 0c lea 0xc2f192f(%rip),%rdi # 0xc2f1958
* 29: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2e: e8 05 91 ec fc call 0xfcec9138
33: 5b pop %rbx
34: 5d pop %rbp
35: c3 ret
36: cc int3
37: cc int3
38: cc int3
39: cc int3
3a: 48 89 df mov %rbx,%rdi
3d: e8 .byte 0xe8
3e: b6 .byte 0xb6
final repro crashed as (corrupted=false):
------------[ cut here ]------------
refcount_t: addition on 0; use-after-free.
WARNING: lib/refcount.c:25 at refcount_warn_saturate+0x111/0x130 lib/refcount.c:25, CPU#0: syz.1.205/6402
Modules linked in:
CPU: 0 UID: 0 PID: 6402 Comm: syz.1.205 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:refcount_warn_saturate+0x111/0x130 lib/refcount.c:25
Code: 06 e8 33 91 ec fc 48 8d 3d 3c 19 2f 0c 67 48 0f b9 3a e8 22 91 ec fc 5b 5d c3 cc cc cc cc e8 16 91 ec fc 48 8d 3d 2f 19 2f 0c <67> 48 0f b9 3a e8 05 91 ec fc 5b 5d c3 cc cc cc cc 48 89 df e8 b6
RSP: 0018:ffffc900031dfc90 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888022b7f51c RCX: ffffffff851de1bb
RDX: ffff888032820000 RSI: ffffffff851de26a RDI: ffffffff914cfba0
RBP: 0000000000000002 R08: 0000000000000005 R09: 0000000000000004
R10: 0000000000000002 R11: 0000000000000000 R12: ffff888022b7f51c
R13: ffff8880401ac358 R14: ffffc900031dfd40 R15: ffff888035e9e000
FS: 00007f6652eb86c0(0000) GS:ffff8880d5bde000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e06f5da08 CR3: 000000003d010000 CR4: 0000000000352ef0
Call Trace:
__refcount_add include/linux/refcount.h:289 [inline]
__refcount_inc include/linux/refcount.h:366 [inline]
refcount_inc include/linux/refcount.h:383 [inline]
kref_get include/linux/kref.h:45 [inline]
config_item_get fs/configfs/item.c:104 [inline]
config_item_get+0x8c/0xb0 fs/configfs/item.c:101
configfs_get_config_item fs/configfs/configfs_internal.h:127 [inline]
get_target fs/configfs/symlink.c:128 [inline]
configfs_symlink+0x390/0x11f0 fs/configfs/symlink.c:185
vfs_symlink fs/namei.c:5660 [inline]
vfs_symlink+0x178/0x4d0 fs/namei.c:5639
filename_symlinkat+0x2a6/0x560 fs/namei.c:5685
__do_sys_symlinkat fs/namei.c:5705 [inline]
__se_sys_symlinkat fs/namei.c:5700 [inline]
__x64_sys_symlinkat+0x9c/0xe0 fs/namei.c:5700
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6651f9e0d9
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:00007f6652eb8028 EFLAGS: 00000246 ORIG_RAX: 000000000000010a
RAX: ffffffffffffffda RBX: 00007f6652225fa0 RCX: 00007f6651f9e0d9
RDX: 0000200000000200 RSI: ffffffffffffff9c RDI: 00002000000001c0
RBP: 00007f6652035024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6652226038 R14: 00007f6652225fa0 R15: 00007ffd7e1f4b78
----------------
Code disassembly (best guess), 1 bytes skipped:
0: e8 33 91 ec fc call 0xfcec9138
5: 48 8d 3d 3c 19 2f 0c lea 0xc2f193c(%rip),%rdi # 0xc2f1948
c: 67 48 0f b9 3a ud1 (%edx),%rdi
11: e8 22 91 ec fc call 0xfcec9138
16: 5b pop %rbx
17: 5d pop %rbp
18: c3 ret
19: cc int3
1a: cc int3
1b: cc int3
1c: cc int3
1d: e8 16 91 ec fc call 0xfcec9138
22: 48 8d 3d 2f 19 2f 0c lea 0xc2f192f(%rip),%rdi # 0xc2f1958
* 29: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2e: e8 05 91 ec fc call 0xfcec9138
33: 5b pop %rbx
34: 5d pop %rbp
35: c3 ret
36: cc int3
37: cc int3
38: cc int3
39: cc int3
3a: 48 89 df mov %rbx,%rdi
3d: e8 .byte 0xe8
3e: b6 .byte 0xb6