Extracting prog: 1m33.390831691s
Minimizing prog: 18m23.362632528s
Simplifying prog options: 0s
Extracting C: 35.907196491s
Simplifying C: 12m33.791944193s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdirat-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdirat(0xffffffffffffff9c, &(0x7f00000021c0)='./file0\x00', 0x3a)
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program crashed: BUG: corrupted list in __dentry_kill
single: successfully extracted reproducer
found reproducer with 10 syscalls
minimizing guilty program
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdirat-mkdir-mkdir
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdirat(0xffffffffffffff9c, &(0x7f00000021c0)='./file0\x00', 0x3a)
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdirat-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdirat(0xffffffffffffff9c, &(0x7f00000021c0)='./file0\x00', 0x3a)
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdirat-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdirat(0xffffffffffffff9c, &(0x7f00000021c0)='./file0\x00', 0x3a)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program crashed: BUG: corrupted list in __dentry_kill
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
syz_pidfd_open(r0, 0x0)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
getpid()
setns(0xffffffffffffffff, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = syz_pidfd_open(0x0, 0x0)
setns(r0, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(0x0, 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(0x0, &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', 0x0, &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', 0x0, 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(0x0)
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(0x0, 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(0x0, 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, 0x0, &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, 0x0)

program did not crash
testing program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340))

program did not crash
extracting C reproducer
testing compiled C program (duration=35.690907678s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program crashed: BUG: corrupted list in __dentry_kill
simplifying C reproducer
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program crashed: BUG: corrupted list in __dentry_kill
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program did not crash
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program did not crash
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program did not crash
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program crashed: KASAN: null-ptr-deref Write in vfs_rmdir
a never seen crash title: KASAN: null-ptr-deref Write in vfs_rmdir, ignore
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program crashed: BUG: corrupted list in __dentry_kill
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program crashed: BUG: corrupted list in __dentry_kill
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program crashed: BUG: corrupted list in __dentry_kill
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program crashed: BUG: corrupted list in __dentry_kill
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program crashed: BUG: corrupted list in __dentry_kill
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program did not crash
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program crashed: BUG: corrupted list in __dentry_kill
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program crashed: BUG: corrupted list in __dentry_kill
testing compiled C program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
program crashed: BUG: corrupted list in __dentry_kill
testing program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program crashed: BUG: corrupted list in __dentry_kill
validation run: crashed=true
testing program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program crashed: BUG: corrupted list in __dentry_kill
validation run: crashed=true
testing program (duration=35.690907678s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getpid-syz_pidfd_open-setns-umount2-mount$incfs-chdir-mkdir-mkdir-mount$overlay
detailed listing:
executing program 0:
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
umount2(&(0x7f0000000040)='.\x00', 0x2)
mount$incfs(&(0x7f00000007c0)='./bus\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f0000000140)='./bus\x00')
mkdir(&(0x7f0000000040)='./file1\x00', 0x0)
mkdir(&(0x7f0000000300)='./bus\x00', 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x1004040, &(0x7f0000000340)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1'}}]})

program crashed: BUG: corrupted list in __dentry_kill
validation run: crashed=true
reproducing took 35m55.804779135s
repro crashed as (corrupted=false):
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007fe7b4379e19 R08: 0000200000000340 R09: 0000000000000000
R10: 0000000001004040 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe7b451dfa0 R14: 00007fe7b451dfa0 R15: 0000000000000005
---[ end trace ff8562151fdd076e ]---
list_del corruption. prev->next should be ffff8881271e7f70, but was ffff8881271e75f0
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 412 Comm: syz.1.25 Tainted: G        W         5.10.240-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2025
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 86 cd 31 02 0f 0b 48 c7 c7 00 1d 20 85 48 89 de e8 75 cd 31 02 0f 0b 48 c7 c7 60 1d 20 85 48 89 de e8 64 cd 31 02 <0f> 0b 48 c7 c7 c0 1d 20 85 48 89 de e8 53 cd 31 02 0f 0b 00 55 48
RSP: 0018:ffffc90000f77478 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff8881271e7f70 RCX: 84e668eb767ffa00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000f77498 R08: 0000000000000004 R09: 0000000000000003
R10: fffff520001eedd8 R11: 1ffff920001eedd8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881271e75f0 R15: ffff88810cfa92b0
FS:  0000555577e9a500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000010ec20000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:132 [inline]
 dentry_unlist fs/dcache.c:526 [inline]
 __dentry_kill+0x24c/0x650 fs/dcache.c:579
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:883
 path_put+0x39/0x60 fs/namei.c:499
 dentry_release+0x4f/0xa0 fs/incfs/vfs.c:1591
 __dentry_kill+0x4b5/0x650 fs/dcache.c:588
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:883
 path_put+0x39/0x60 fs/namei.c:499
 dentry_release+0x4f/0xa0 fs/incfs/vfs.c:1591
 __dentry_kill+0x4b5/0x650 fs/dcache.c:588
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:883
 ovl_workdir_create+0x22e/0x530 fs/overlayfs/super.c:765
 ovl_make_workdir fs/overlayfs/super.c:1321 [inline]
 ovl_get_workdir+0x33b/0xd40 fs/overlayfs/super.c:1458
 ovl_fill_super+0x169b/0x25f0 fs/overlayfs/super.c:1998
 mount_nodev+0x5c/0xf0 fs/super.c:1488
 ovl_mount+0x2c/0x40 fs/overlayfs/super.c:2082
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:2919
 path_mount+0x572/0xc80 fs/namespace.c:3249
 do_mount fs/namespace.c:3262 [inline]
 __do_sys_mount fs/namespace.c:3470 [inline]
 __se_sys_mount+0x318/0x380 fs/namespace.c:3447
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3447
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fe7b42f6be9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc20ecc668 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe7b451dfa0 RCX: 00007fe7b42f6be9
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007fe7b4379e19 R08: 0000200000000340 R09: 0000000000000000
R10: 0000000001004040 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe7b451dfa0 R14: 00007fe7b451dfa0 R15: 0000000000000005
Modules linked in:

---[ end trace ff8562151fdd076f ]---
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 86 cd 31 02 0f 0b 48 c7 c7 00 1d 20 85 48 89 de e8 75 cd 31 02 0f 0b 48 c7 c7 60 1d 20 85 48 89 de e8 64 cd 31 02 <0f> 0b 48 c7 c7 c0 1d 20 85 48 89 de e8 53 cd 31 02 0f 0b 00 55 48
RSP: 0018:ffffc90000f77478 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff8881271e7f70 RCX: 84e668eb767ffa00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000f77498 R08: 0000000000000004 R09: 0000000000000003
R10: fffff520001eedd8 R11: 1ffff920001eedd8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881271e75f0 R15: ffff88810cfa92b0
FS:  0000555577e9a500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000010ec20000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

final repro crashed as (corrupted=false):
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007fe7b4379e19 R08: 0000200000000340 R09: 0000000000000000
R10: 0000000001004040 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe7b451dfa0 R14: 00007fe7b451dfa0 R15: 0000000000000005
---[ end trace ff8562151fdd076e ]---
list_del corruption. prev->next should be ffff8881271e7f70, but was ffff8881271e75f0
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 412 Comm: syz.1.25 Tainted: G        W         5.10.240-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2025
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 86 cd 31 02 0f 0b 48 c7 c7 00 1d 20 85 48 89 de e8 75 cd 31 02 0f 0b 48 c7 c7 60 1d 20 85 48 89 de e8 64 cd 31 02 <0f> 0b 48 c7 c7 c0 1d 20 85 48 89 de e8 53 cd 31 02 0f 0b 00 55 48
RSP: 0018:ffffc90000f77478 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff8881271e7f70 RCX: 84e668eb767ffa00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000f77498 R08: 0000000000000004 R09: 0000000000000003
R10: fffff520001eedd8 R11: 1ffff920001eedd8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881271e75f0 R15: ffff88810cfa92b0
FS:  0000555577e9a500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000010ec20000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:132 [inline]
 dentry_unlist fs/dcache.c:526 [inline]
 __dentry_kill+0x24c/0x650 fs/dcache.c:579
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:883
 path_put+0x39/0x60 fs/namei.c:499
 dentry_release+0x4f/0xa0 fs/incfs/vfs.c:1591
 __dentry_kill+0x4b5/0x650 fs/dcache.c:588
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:883
 path_put+0x39/0x60 fs/namei.c:499
 dentry_release+0x4f/0xa0 fs/incfs/vfs.c:1591
 __dentry_kill+0x4b5/0x650 fs/dcache.c:588
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:883
 ovl_workdir_create+0x22e/0x530 fs/overlayfs/super.c:765
 ovl_make_workdir fs/overlayfs/super.c:1321 [inline]
 ovl_get_workdir+0x33b/0xd40 fs/overlayfs/super.c:1458
 ovl_fill_super+0x169b/0x25f0 fs/overlayfs/super.c:1998
 mount_nodev+0x5c/0xf0 fs/super.c:1488
 ovl_mount+0x2c/0x40 fs/overlayfs/super.c:2082
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:2919
 path_mount+0x572/0xc80 fs/namespace.c:3249
 do_mount fs/namespace.c:3262 [inline]
 __do_sys_mount fs/namespace.c:3470 [inline]
 __se_sys_mount+0x318/0x380 fs/namespace.c:3447
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3447
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fe7b42f6be9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc20ecc668 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe7b451dfa0 RCX: 00007fe7b42f6be9
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007fe7b4379e19 R08: 0000200000000340 R09: 0000000000000000
R10: 0000000001004040 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe7b451dfa0 R14: 00007fe7b451dfa0 R15: 0000000000000005
Modules linked in:

---[ end trace ff8562151fdd076f ]---
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 86 cd 31 02 0f 0b 48 c7 c7 00 1d 20 85 48 89 de e8 75 cd 31 02 0f 0b 48 c7 c7 60 1d 20 85 48 89 de e8 64 cd 31 02 <0f> 0b 48 c7 c7 c0 1d 20 85 48 89 de e8 53 cd 31 02 0f 0b 00 55 48
RSP: 0018:ffffc90000f77478 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff8881271e7f70 RCX: 84e668eb767ffa00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000f77498 R08: 0000000000000004 R09: 0000000000000003
R10: fffff520001eedd8 R11: 1ffff920001eedd8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881271e75f0 R15: ffff88810cfa92b0
FS:  0000555577e9a500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000010ec20000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400