Extracting prog: 1m28.007706782s
Minimizing prog: 25m4.511782218s
Simplifying prog options: 0s
Extracting C: 34.750945775s
Simplifying C: 5m22.378737056s


extracting reproducer from 24 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs: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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-init_module-syz_pidfd_open-setns-syz_clone-getpgid-syz_pidfd_open-pidfd_send_signal-writev-ioctl$BINDER_WRITE_READ-openat-openat$incfs-ioctl$TIOCL_GETKMSGREDIRECT
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = getpid()
init_module(&(0x7f0000000180)={{0x7f, 0x45, 0x4c, 0x46, 0xa3, 0x4, 0x9, 0x6, 0x2, 0x2, 0x3, 0xfffd, 0x29e, 0x40, 0x27b, 0x3, 0x8, 0x38, 0x1, 0xa, 0x40, 0xfffc}, [{0x4, 0xd, 0x1, 0x6, 0xffffffffffffffff, 0xb7f, 0x800000000001, 0x1}]}, 0x78, 0x0)
r3 = syz_pidfd_open(r2, 0x0)
setns(r3, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)
r4 = getpgid(0x0)
r5 = syz_pidfd_open(r4, 0x0)
pidfd_send_signal(r5, 0x21, 0x0, 0x4)
writev(0xffffffffffffffff, 0x0, 0x0)
ioctl$BINDER_WRITE_READ(0xffffffffffffffff, 0xc0306201, &(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, &(0x7f0000000380)})
r6 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0, 0x8c)
r7 = openat$incfs(r6, &(0x7f00000001c0)='.pending_reads\x00', 0x0, 0x130)
ioctl$TIOCL_GETKMSGREDIRECT(r7, 0xc058671e, &(0x7f00000000c0))

program crashed: WARNING in simple_rmdir
program crashed: WARNING in simple_rmdir
single: successfully extracted reproducer
found reproducer with 21 syscalls
minimizing guilty program
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-init_module-syz_pidfd_open-setns-syz_clone-getpgid-syz_pidfd_open-pidfd_send_signal-writev-ioctl$BINDER_WRITE_READ-openat-openat$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = getpid()
init_module(&(0x7f0000000180)={{0x7f, 0x45, 0x4c, 0x46, 0xa3, 0x4, 0x9, 0x6, 0x2, 0x2, 0x3, 0xfffd, 0x29e, 0x40, 0x27b, 0x3, 0x8, 0x38, 0x1, 0xa, 0x40, 0xfffc}, [{0x4, 0xd, 0x1, 0x6, 0xffffffffffffffff, 0xb7f, 0x800000000001, 0x1}]}, 0x78, 0x0)
r3 = syz_pidfd_open(r2, 0x0)
setns(r3, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)
r4 = getpgid(0x0)
r5 = syz_pidfd_open(r4, 0x0)
pidfd_send_signal(r5, 0x21, 0x0, 0x4)
writev(0xffffffffffffffff, 0x0, 0x0)
ioctl$BINDER_WRITE_READ(0xffffffffffffffff, 0xc0306201, &(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, &(0x7f0000000380)})
r6 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0, 0x8c)
openat$incfs(r6, &(0x7f00000001c0)='.pending_reads\x00', 0x0, 0x130)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-init_module-syz_pidfd_open-setns-syz_clone-getpgid-syz_pidfd_open-pidfd_send_signal-writev-ioctl$BINDER_WRITE_READ-openat
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = getpid()
init_module(&(0x7f0000000180)={{0x7f, 0x45, 0x4c, 0x46, 0xa3, 0x4, 0x9, 0x6, 0x2, 0x2, 0x3, 0xfffd, 0x29e, 0x40, 0x27b, 0x3, 0x8, 0x38, 0x1, 0xa, 0x40, 0xfffc}, [{0x4, 0xd, 0x1, 0x6, 0xffffffffffffffff, 0xb7f, 0x800000000001, 0x1}]}, 0x78, 0x0)
r3 = syz_pidfd_open(r2, 0x0)
setns(r3, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)
r4 = getpgid(0x0)
r5 = syz_pidfd_open(r4, 0x0)
pidfd_send_signal(r5, 0x21, 0x0, 0x4)
writev(0xffffffffffffffff, 0x0, 0x0)
ioctl$BINDER_WRITE_READ(0xffffffffffffffff, 0xc0306201, &(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, &(0x7f0000000380)})
openat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0, 0x8c)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-init_module-syz_pidfd_open-setns-syz_clone-getpgid-syz_pidfd_open-pidfd_send_signal-writev-ioctl$BINDER_WRITE_READ
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = getpid()
init_module(&(0x7f0000000180)={{0x7f, 0x45, 0x4c, 0x46, 0xa3, 0x4, 0x9, 0x6, 0x2, 0x2, 0x3, 0xfffd, 0x29e, 0x40, 0x27b, 0x3, 0x8, 0x38, 0x1, 0xa, 0x40, 0xfffc}, [{0x4, 0xd, 0x1, 0x6, 0xffffffffffffffff, 0xb7f, 0x800000000001, 0x1}]}, 0x78, 0x0)
r3 = syz_pidfd_open(r2, 0x0)
setns(r3, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)
r4 = getpgid(0x0)
r5 = syz_pidfd_open(r4, 0x0)
pidfd_send_signal(r5, 0x21, 0x0, 0x4)
writev(0xffffffffffffffff, 0x0, 0x0)
ioctl$BINDER_WRITE_READ(0xffffffffffffffff, 0xc0306201, &(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, &(0x7f0000000380)})

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-init_module-syz_pidfd_open-setns-syz_clone-getpgid-syz_pidfd_open-pidfd_send_signal-writev
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = getpid()
init_module(&(0x7f0000000180)={{0x7f, 0x45, 0x4c, 0x46, 0xa3, 0x4, 0x9, 0x6, 0x2, 0x2, 0x3, 0xfffd, 0x29e, 0x40, 0x27b, 0x3, 0x8, 0x38, 0x1, 0xa, 0x40, 0xfffc}, [{0x4, 0xd, 0x1, 0x6, 0xffffffffffffffff, 0xb7f, 0x800000000001, 0x1}]}, 0x78, 0x0)
r3 = syz_pidfd_open(r2, 0x0)
setns(r3, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)
r4 = getpgid(0x0)
r5 = syz_pidfd_open(r4, 0x0)
pidfd_send_signal(r5, 0x21, 0x0, 0x4)
writev(0xffffffffffffffff, 0x0, 0x0)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-init_module-syz_pidfd_open-setns-syz_clone-getpgid-syz_pidfd_open-pidfd_send_signal
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = getpid()
init_module(&(0x7f0000000180)={{0x7f, 0x45, 0x4c, 0x46, 0xa3, 0x4, 0x9, 0x6, 0x2, 0x2, 0x3, 0xfffd, 0x29e, 0x40, 0x27b, 0x3, 0x8, 0x38, 0x1, 0xa, 0x40, 0xfffc}, [{0x4, 0xd, 0x1, 0x6, 0xffffffffffffffff, 0xb7f, 0x800000000001, 0x1}]}, 0x78, 0x0)
r3 = syz_pidfd_open(r2, 0x0)
setns(r3, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)
r4 = getpgid(0x0)
r5 = syz_pidfd_open(r4, 0x0)
pidfd_send_signal(r5, 0x21, 0x0, 0x4)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-init_module-syz_pidfd_open-setns-syz_clone-getpgid-syz_pidfd_open
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = getpid()
init_module(&(0x7f0000000180)={{0x7f, 0x45, 0x4c, 0x46, 0xa3, 0x4, 0x9, 0x6, 0x2, 0x2, 0x3, 0xfffd, 0x29e, 0x40, 0x27b, 0x3, 0x8, 0x38, 0x1, 0xa, 0x40, 0xfffc}, [{0x4, 0xd, 0x1, 0x6, 0xffffffffffffffff, 0xb7f, 0x800000000001, 0x1}]}, 0x78, 0x0)
r3 = syz_pidfd_open(r2, 0x0)
setns(r3, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)
r4 = getpgid(0x0)
syz_pidfd_open(r4, 0x0)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-init_module-syz_pidfd_open-setns-syz_clone-getpgid
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = getpid()
init_module(&(0x7f0000000180)={{0x7f, 0x45, 0x4c, 0x46, 0xa3, 0x4, 0x9, 0x6, 0x2, 0x2, 0x3, 0xfffd, 0x29e, 0x40, 0x27b, 0x3, 0x8, 0x38, 0x1, 0xa, 0x40, 0xfffc}, [{0x4, 0xd, 0x1, 0x6, 0xffffffffffffffff, 0xb7f, 0x800000000001, 0x1}]}, 0x78, 0x0)
r3 = syz_pidfd_open(r2, 0x0)
setns(r3, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)
getpgid(0x0)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-init_module-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = getpid()
init_module(&(0x7f0000000180)={{0x7f, 0x45, 0x4c, 0x46, 0xa3, 0x4, 0x9, 0x6, 0x2, 0x2, 0x3, 0xfffd, 0x29e, 0x40, 0x27b, 0x3, 0x8, 0x38, 0x1, 0xa, 0x40, 0xfffc}, [{0x4, 0xd, 0x1, 0x6, 0xffffffffffffffff, 0xb7f, 0x800000000001, 0x1}]}, 0x78, 0x0)
r3 = syz_pidfd_open(r2, 0x0)
setns(r3, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-init_module-syz_pidfd_open-setns
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = getpid()
init_module(&(0x7f0000000180)={{0x7f, 0x45, 0x4c, 0x46, 0xa3, 0x4, 0x9, 0x6, 0x2, 0x2, 0x3, 0xfffd, 0x29e, 0x40, 0x27b, 0x3, 0x8, 0x38, 0x1, 0xa, 0x40, 0xfffc}, [{0x4, 0xd, 0x1, 0x6, 0xffffffffffffffff, 0xb7f, 0x800000000001, 0x1}]}, 0x78, 0x0)
r3 = syz_pidfd_open(r2, 0x0)
setns(r3, 0x24020000)

program did not crash
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-init_module-syz_pidfd_open-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = getpid()
init_module(&(0x7f0000000180)={{0x7f, 0x45, 0x4c, 0x46, 0xa3, 0x4, 0x9, 0x6, 0x2, 0x2, 0x3, 0xfffd, 0x29e, 0x40, 0x27b, 0x3, 0x8, 0x38, 0x1, 0xa, 0x40, 0xfffc}, [{0x4, 0xd, 0x1, 0x6, 0xffffffffffffffff, 0xb7f, 0x800000000001, 0x1}]}, 0x78, 0x0)
syz_pidfd_open(r2, 0x0)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-init_module-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
getpid()
init_module(&(0x7f0000000180)={{0x7f, 0x45, 0x4c, 0x46, 0xa3, 0x4, 0x9, 0x6, 0x2, 0x2, 0x3, 0xfffd, 0x29e, 0x40, 0x27b, 0x3, 0x8, 0x38, 0x1, 0xa, 0x40, 0xfffc}, [{0x4, 0xd, 0x1, 0x6, 0xffffffffffffffff, 0xb7f, 0x800000000001, 0x1}]}, 0x78, 0x0)
setns(0xffffffffffffffff, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = getpid()
r3 = syz_pidfd_open(r2, 0x0)
setns(r3, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-add_key$keyring-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
add_key$keyring(&(0x7f0000000240), 0x0, 0x0, 0x0, r1)
r2 = syz_pidfd_open(0x0, 0x0)
setns(r2, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-add_key$keyring-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
add_key$keyring(&(0x7f0000000280), &(0x7f0000000200)={'syz', 0x2}, 0x0, 0x0, r0)
r1 = getpid()
r2 = syz_pidfd_open(r1, 0x0)
setns(r2, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-keyctl$restrict_keyring-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
keyctl$restrict_keyring(0x1d, r0, &(0x7f0000000080)='id_legacy\x00', 0x0)
r1 = getpid()
r2 = syz_pidfd_open(r1, 0x0)
setns(r2, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-add_key$keyring-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
add_key$keyring(&(0x7f0000000000), &(0x7f0000000040)={'syz', 0x1}, 0x0, 0x0, 0xffffffffffffffff)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mkdir-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mkdir(0x0, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {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: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}}): mkdir-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=34.530363786s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(0x0, 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, 0x0, &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', 0x0, 0x2800000, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mount$incfs(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', 0x0, &(0x7f0000000680), 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=34.530363786s, {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: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}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', 0x0, 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=34.530363786s, {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: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}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
program crashed: WARNING in simple_rmdir
simplifying C reproducer
testing compiled C program (duration=34.530363786s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
program crashed: WARNING in simple_rmdir
testing compiled C program (duration=34.530363786s, {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}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
program did not crash
testing compiled C program (duration=34.530363786s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
program crashed: WARNING in simple_rmdir
testing compiled C program (duration=34.530363786s, {Threaded:false Repeat:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
program crashed: WARNING in simple_rmdir
testing compiled C program (duration=34.530363786s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
program did not crash
testing compiled C program (duration=34.530363786s, {Threaded:false Repeat:true 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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
program did not crash
testing compiled C program (duration=34.530363786s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
program crashed: WARNING in simple_rmdir
testing program (duration=34.530363786s, {Threaded:false Repeat:true 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:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: WARNING in simple_rmdir
validation run: crashed=true
testing program (duration=34.530363786s, {Threaded:false Repeat:true 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:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: WARNING in simple_rmdir
validation run: crashed=true
testing program (duration=34.530363786s, {Threaded:false Repeat:true 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:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-mount$incfs-getpid-syz_pidfd_open-setns-syz_clone
detailed listing:
executing program 0:
mkdir(&(0x7f0000000140)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000400)='ramfs\x00', 0x2800000, 0x0)
mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f0000000140)='./file0\x00', &(0x7f0000000680), 0x2010800, 0x0)
r0 = getpid()
r1 = syz_pidfd_open(r0, 0x0)
setns(r1, 0x24020000)
syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: WARNING in simple_rmdir
validation run: crashed=true
reproducing took 35m4.647405637s
repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 384 at fs/inode.c:340 drop_nlink+0xce/0x110 fs/inode.c:340
Modules linked in:
CPU: 1 UID: 0 PID: 384 Comm: syz.2.17 Not tainted syzkaller #0 001c7e68fa735976e9f6b7ad125989e1d2b10b0e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:drop_nlink+0xce/0x110 fs/inode.c:340
Code: 04 00 00 be 08 00 00 00 e8 bf 25 ee ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 e2 5b 96 ff <0f> 0b eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 59 ff ff ff 4c
RSP: 0018:ffffc900007ef820 EFLAGS: 00010293
RAX: ffffffff81f1412e RBX: ffff888112c516c0 RCX: ffff8881158b3900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900007ef848 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520000fdefc R12: dffffc0000000000
R13: 1ffff1102258a2e1 R14: ffff888112c51708 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0076af000 CR3: 0000000102764000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 simple_rmdir+0x153/0x260 fs/libfs.c:773
 vfs_rmdir+0x3e0/0x560 fs/namei.c:4348
 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd8/0x2a0 fs/super.c:476
 deactivate_super+0xb8/0xe0 fs/super.c:509
 cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
 task_work_run+0x1e5/0x260 kernel/task_work.c:246
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9e3/0x2650 kernel/exit.c:953
 do_group_exit+0x229/0x2f0 kernel/exit.c:1095
 get_signal+0x1398/0x14e0 kernel/signal.c:2933
 arch_do_signal_or_restart+0xbc/0x760 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fa0bea514f7
Code: Unable to access opcode bytes at 0x7fa0bea514cd.
RSP: 002b:00007ffde1beb660 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 00007fa0beb9aeb9
RDX: 00007ffde1beb680 RSI: 00007ffde1beb7b0 RDI: 000000000000000b
RBP: 00007fa0bec08c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fa0bee15fac R14: 00007fa0bee15fa0 R15: 00007fa0bee15fa0
 </TASK>
---[ end trace 0000000000000000 ]---
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: null-ptr-deref in atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline]
BUG: KASAN: null-ptr-deref in ihold+0x24/0x70 fs/inode.c:452
Write of size 4 at addr 0000000000000168 by task syz.2.17/384

CPU: 1 UID: 0 PID: 384 Comm: syz.2.17 Tainted: G        W          syzkaller #0 001c7e68fa735976e9f6b7ad125989e1d2b10b0e
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 print_report+0x3d/0x70 mm/kasan/report.c:484
 kasan_report+0x162/0x1a0 mm/kasan/report.c:594
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x25a/0x2b0 mm/kasan/generic.c:189
 __kasan_check_write+0x18/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline]
 ihold+0x24/0x70 fs/inode.c:452
 d_delete_notify include/linux/fsnotify.h:357 [inline]
 vfs_rmdir+0x26a/0x560 fs/namei.c:4361
 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd8/0x2a0 fs/super.c:476
 deactivate_super+0xb8/0xe0 fs/super.c:509
 cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
 task_work_run+0x1e5/0x260 kernel/task_work.c:246
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9e3/0x2650 kernel/exit.c:953
 do_group_exit+0x229/0x2f0 kernel/exit.c:1095
 get_signal+0x1398/0x14e0 kernel/signal.c:2933
 arch_do_signal_or_restart+0xbc/0x760 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fa0bea514f7
Code: Unable to access opcode bytes at 0x7fa0bea514cd.
RSP: 002b:00007ffde1beb660 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 00007fa0beb9aeb9
RDX: 00007ffde1beb680 RSI: 00007ffde1beb7b0 RDI: 000000000000000b
RBP: 00007fa0bec08c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fa0bee15fac R14: 00007fa0bee15fa0 R15: 00007fa0bee15fa0
 </TASK>
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000168
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0 
Oops: Oops: 0002 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 384 Comm: syz.2.17 Tainted: G    B   W          syzkaller #0 001c7e68fa735976e9f6b7ad125989e1d2b10b0e
Tainted: [B]=BAD_PAGE, [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline]
RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline]
RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline]
RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452
Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 cd 52 96 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 7c 1c ee ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 dd
RSP: 0018:ffffc900007ef880 EFLAGS: 00010246
RAX: ffff8881158b3900 RBX: 0000000000000000 RCX: ffff8881158b3900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900007ef890 R08: ffffffff88b8b947 R09: 1ffffffff1171728
R10: dffffc0000000000 R11: fffffbfff1171729 R12: ffff888112c516cc
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000168 CR3: 000000010bf90000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 d_delete_notify include/linux/fsnotify.h:357 [inline]
 vfs_rmdir+0x26a/0x560 fs/namei.c:4361
 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd8/0x2a0 fs/super.c:476
 deactivate_super+0xb8/0xe0 fs/super.c:509
 cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
 task_work_run+0x1e5/0x260 kernel/task_work.c:246
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9e3/0x2650 kernel/exit.c:953
 do_group_exit+0x229/0x2f0 kernel/exit.c:1095
 get_signal+0x1398/0x14e0 kernel/signal.c:2933
 arch_do_signal_or_restart+0xbc/0x760 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fa0bea514f7
Code: Unable to access opcode bytes at 0x7fa0bea514cd.
RSP: 002b:00007ffde1beb660 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 00007fa0beb9aeb9
RDX: 00007ffde1beb680 RSI: 00007ffde1beb7b0 RDI: 000000000000000b
RBP: 00007fa0bec08c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fa0bee15fac R14: 00007fa0bee15fa0 R15: 00007fa0bee15fa0
 </TASK>
Modules linked in:
CR2: 0000000000000168
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline]
RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline]
RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline]
RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452
Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 cd 52 96 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 7c 1c ee ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 dd
RSP: 0018:ffffc900007ef880 EFLAGS: 00010246
RAX: ffff8881158b3900 RBX: 0000000000000000 RCX: ffff8881158b3900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900007ef890 R08: ffffffff88b8b947 R09: 1ffffffff1171728
R10: dffffc0000000000 R11: fffffbfff1171729 R12: ffff888112c516cc
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000168 CR3: 000000010bf90000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	f3 0f 1e fa          	endbr64
   4:	55                   	push   %rbp
   5:	48 89 e5             	mov    %rsp,%rbp
   8:	41 56                	push   %r14
   a:	53                   	push   %rbx
   b:	48 89 fb             	mov    %rdi,%rbx
   e:	e8 cd 52 96 ff       	call   0xff9652e0
  13:	48 8d bb 68 01 00 00 	lea    0x168(%rbx),%rdi
  1a:	be 04 00 00 00       	mov    $0x4,%esi
  1f:	e8 7c 1c ee ff       	call   0xffee1ca0
  24:	41 be 01 00 00 00    	mov    $0x1,%r14d
* 2a:	f0 44 0f c1 b3 68 01 	lock xadd %r14d,0x168(%rbx) <-- trapping instruction
  31:	00 00
  33:	41 ff c6             	inc    %r14d
  36:	bf 02 00 00 00       	mov    $0x2,%edi
  3b:	44 89 f6             	mov    %r14d,%esi
  3e:	e8                   	.byte 0xe8
  3f:	dd                   	.byte 0xdd

final repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 384 at fs/inode.c:340 drop_nlink+0xce/0x110 fs/inode.c:340
Modules linked in:
CPU: 1 UID: 0 PID: 384 Comm: syz.2.17 Not tainted syzkaller #0 001c7e68fa735976e9f6b7ad125989e1d2b10b0e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:drop_nlink+0xce/0x110 fs/inode.c:340
Code: 04 00 00 be 08 00 00 00 e8 bf 25 ee ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 e2 5b 96 ff <0f> 0b eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 59 ff ff ff 4c
RSP: 0018:ffffc900007ef820 EFLAGS: 00010293
RAX: ffffffff81f1412e RBX: ffff888112c516c0 RCX: ffff8881158b3900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900007ef848 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520000fdefc R12: dffffc0000000000
R13: 1ffff1102258a2e1 R14: ffff888112c51708 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0076af000 CR3: 0000000102764000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 simple_rmdir+0x153/0x260 fs/libfs.c:773
 vfs_rmdir+0x3e0/0x560 fs/namei.c:4348
 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd8/0x2a0 fs/super.c:476
 deactivate_super+0xb8/0xe0 fs/super.c:509
 cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
 task_work_run+0x1e5/0x260 kernel/task_work.c:246
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9e3/0x2650 kernel/exit.c:953
 do_group_exit+0x229/0x2f0 kernel/exit.c:1095
 get_signal+0x1398/0x14e0 kernel/signal.c:2933
 arch_do_signal_or_restart+0xbc/0x760 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fa0bea514f7
Code: Unable to access opcode bytes at 0x7fa0bea514cd.
RSP: 002b:00007ffde1beb660 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 00007fa0beb9aeb9
RDX: 00007ffde1beb680 RSI: 00007ffde1beb7b0 RDI: 000000000000000b
RBP: 00007fa0bec08c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fa0bee15fac R14: 00007fa0bee15fa0 R15: 00007fa0bee15fa0
 </TASK>
---[ end trace 0000000000000000 ]---
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: null-ptr-deref in atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline]
BUG: KASAN: null-ptr-deref in ihold+0x24/0x70 fs/inode.c:452
Write of size 4 at addr 0000000000000168 by task syz.2.17/384

CPU: 1 UID: 0 PID: 384 Comm: syz.2.17 Tainted: G        W          syzkaller #0 001c7e68fa735976e9f6b7ad125989e1d2b10b0e
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 print_report+0x3d/0x70 mm/kasan/report.c:484
 kasan_report+0x162/0x1a0 mm/kasan/report.c:594
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x25a/0x2b0 mm/kasan/generic.c:189
 __kasan_check_write+0x18/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline]
 ihold+0x24/0x70 fs/inode.c:452
 d_delete_notify include/linux/fsnotify.h:357 [inline]
 vfs_rmdir+0x26a/0x560 fs/namei.c:4361
 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd8/0x2a0 fs/super.c:476
 deactivate_super+0xb8/0xe0 fs/super.c:509
 cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
 task_work_run+0x1e5/0x260 kernel/task_work.c:246
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9e3/0x2650 kernel/exit.c:953
 do_group_exit+0x229/0x2f0 kernel/exit.c:1095
 get_signal+0x1398/0x14e0 kernel/signal.c:2933
 arch_do_signal_or_restart+0xbc/0x760 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fa0bea514f7
Code: Unable to access opcode bytes at 0x7fa0bea514cd.
RSP: 002b:00007ffde1beb660 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 00007fa0beb9aeb9
RDX: 00007ffde1beb680 RSI: 00007ffde1beb7b0 RDI: 000000000000000b
RBP: 00007fa0bec08c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fa0bee15fac R14: 00007fa0bee15fa0 R15: 00007fa0bee15fa0
 </TASK>
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000168
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0 
Oops: Oops: 0002 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 384 Comm: syz.2.17 Tainted: G    B   W          syzkaller #0 001c7e68fa735976e9f6b7ad125989e1d2b10b0e
Tainted: [B]=BAD_PAGE, [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline]
RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline]
RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline]
RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452
Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 cd 52 96 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 7c 1c ee ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 dd
RSP: 0018:ffffc900007ef880 EFLAGS: 00010246
RAX: ffff8881158b3900 RBX: 0000000000000000 RCX: ffff8881158b3900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900007ef890 R08: ffffffff88b8b947 R09: 1ffffffff1171728
R10: dffffc0000000000 R11: fffffbfff1171729 R12: ffff888112c516cc
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000168 CR3: 000000010bf90000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 d_delete_notify include/linux/fsnotify.h:357 [inline]
 vfs_rmdir+0x26a/0x560 fs/namei.c:4361
 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd8/0x2a0 fs/super.c:476
 deactivate_super+0xb8/0xe0 fs/super.c:509
 cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
 task_work_run+0x1e5/0x260 kernel/task_work.c:246
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9e3/0x2650 kernel/exit.c:953
 do_group_exit+0x229/0x2f0 kernel/exit.c:1095
 get_signal+0x1398/0x14e0 kernel/signal.c:2933
 arch_do_signal_or_restart+0xbc/0x760 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fa0bea514f7
Code: Unable to access opcode bytes at 0x7fa0bea514cd.
RSP: 002b:00007ffde1beb660 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 00007fa0beb9aeb9
RDX: 00007ffde1beb680 RSI: 00007ffde1beb7b0 RDI: 000000000000000b
RBP: 00007fa0bec08c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fa0bee15fac R14: 00007fa0bee15fa0 R15: 00007fa0bee15fa0
 </TASK>
Modules linked in:
CR2: 0000000000000168
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline]
RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline]
RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline]
RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452
Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 cd 52 96 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 7c 1c ee ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 dd
RSP: 0018:ffffc900007ef880 EFLAGS: 00010246
RAX: ffff8881158b3900 RBX: 0000000000000000 RCX: ffff8881158b3900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900007ef890 R08: ffffffff88b8b947 R09: 1ffffffff1171728
R10: dffffc0000000000 R11: fffffbfff1171729 R12: ffff888112c516cc
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000168 CR3: 000000010bf90000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	f3 0f 1e fa          	endbr64
   4:	55                   	push   %rbp
   5:	48 89 e5             	mov    %rsp,%rbp
   8:	41 56                	push   %r14
   a:	53                   	push   %rbx
   b:	48 89 fb             	mov    %rdi,%rbx
   e:	e8 cd 52 96 ff       	call   0xff9652e0
  13:	48 8d bb 68 01 00 00 	lea    0x168(%rbx),%rdi
  1a:	be 04 00 00 00       	mov    $0x4,%esi
  1f:	e8 7c 1c ee ff       	call   0xffee1ca0
  24:	41 be 01 00 00 00    	mov    $0x1,%r14d
* 2a:	f0 44 0f c1 b3 68 01 	lock xadd %r14d,0x168(%rbx) <-- trapping instruction
  31:	00 00
  33:	41 ff c6             	inc    %r14d
  36:	bf 02 00 00 00       	mov    $0x2,%edi
  3b:	44 89 f6             	mov    %r14d,%esi
  3e:	e8                   	.byte 0xe8
  3f:	dd                   	.byte 0xdd