Extracting prog: 4m16.682029959s
Minimizing prog: 1h40m37.219593851s
Simplifying prog options: 0s
Extracting C: 31.045872547s
Simplifying C: 5m4.409462916s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$tmpfs-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-chdir-mkdirat-mount$afs-openat$fb0-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mount$tmpfs(0x0, 0x0, &(0x7f00000001c0), 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB])
socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, 0x0, 0x4000)
chdir(&(0x7f0000000280)='./file0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
openat$fb0(0xffffffffffffff9c, &(0x7f0000000000), 0x402, 0x0)
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$tmpfs-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-chdir-mkdirat-mount$afs-openat$fb0-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mount$tmpfs(0x0, 0x0, &(0x7f00000001c0), 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB])
socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, 0x0, 0x4000)
chdir(&(0x7f0000000280)='./file0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
openat$fb0(0xffffffffffffff9c, &(0x7f0000000000), 0x402, 0x0)
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
single: successfully extracted reproducer
found reproducer with 14 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$tmpfs-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-chdir-mkdirat-mount$afs-openat$fb0-chdir-mount$overlay-open
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mount$tmpfs(0x0, 0x0, &(0x7f00000001c0), 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB])
socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, 0x0, 0x4000)
chdir(&(0x7f0000000280)='./file0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
openat$fb0(0xffffffffffffff9c, &(0x7f0000000000), 0x402, 0x0)
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$tmpfs-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-chdir-mkdirat-mount$afs-openat$fb0-chdir-mount$overlay-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mount$tmpfs(0x0, 0x0, &(0x7f00000001c0), 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB])
socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, 0x0, 0x4000)
chdir(&(0x7f0000000280)='./file0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
openat$fb0(0xffffffffffffff9c, &(0x7f0000000000), 0x402, 0x0)
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
getdents(0xffffffffffffffff, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$tmpfs-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-chdir-mkdirat-mount$afs-openat$fb0-chdir-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mount$tmpfs(0x0, 0x0, &(0x7f00000001c0), 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB])
socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, 0x0, 0x4000)
chdir(&(0x7f0000000280)='./file0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
openat$fb0(0xffffffffffffff9c, &(0x7f0000000000), 0x402, 0x0)
chdir(&(0x7f0000000340)='./file0\x00')
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$tmpfs-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-chdir-mkdirat-mount$afs-openat$fb0-mount$overlay-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mount$tmpfs(0x0, 0x0, &(0x7f00000001c0), 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB])
socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, 0x0, 0x4000)
chdir(&(0x7f0000000280)='./file0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
openat$fb0(0xffffffffffffff9c, &(0x7f0000000000), 0x402, 0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$tmpfs-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-chdir-mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mount$tmpfs(0x0, 0x0, &(0x7f00000001c0), 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB])
socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, 0x0, 0x4000)
chdir(&(0x7f0000000280)='./file0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$tmpfs-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-chdir-mkdirat-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mount$tmpfs(0x0, 0x0, &(0x7f00000001c0), 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB])
socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, 0x0, 0x4000)
chdir(&(0x7f0000000280)='./file0\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$tmpfs-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-chdir-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mount$tmpfs(0x0, 0x0, &(0x7f00000001c0), 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB])
socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, 0x0, 0x4000)
chdir(&(0x7f0000000280)='./file0\x00')
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$tmpfs-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mount$tmpfs(0x0, 0x0, &(0x7f00000001c0), 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB])
socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, 0x0, 0x4000)
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$tmpfs-socket$nl_netfilter-mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mount$tmpfs(0x0, 0x0, &(0x7f00000001c0), 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB])
socket$nl_netfilter(0x10, 0x3, 0xc)
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$tmpfs-mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mount$tmpfs(0x0, 0x0, &(0x7f00000001c0), 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB])
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file0\x00', 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE-mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
ioctl$DRM_IOCTL_PRIME_FD_TO_HANDLE(0xffffffffffffffff, 0xc00c643f, &(0x7f0000000800))
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, 0x0, &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', 0x0, 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, 0x0)
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(0x0)
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, 0x0, 0x0, 0x0, &(0x7f0000000080))
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, 0x0)
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, 0x0)
r0 = open(0x0, 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, 0x0)
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing compiled C program (duration=6m0s, {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:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing compiled C program (duration=6m0s, {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}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing compiled C program (duration=6m0s, {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}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing compiled C program (duration=6m0s, {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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing compiled C program (duration=6m0s, {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:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
testing program (duration=6m0s, {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:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, 0x0)
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
validation run: crashed=true
testing program (duration=6m0s, {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:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, 0x0)
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
validation run: crashed=true
testing program (duration=6m0s, {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:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$afs-chdir-mount$overlay-open-getdents
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0)
mount$afs(0x0, &(0x7f00000001c0)='./file0\x00', &(0x7f00000002c0), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='dyn'])
chdir(&(0x7f0000000340)='./file0\x00')
mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', 0x0, 0x0, 0x0)
r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0)
getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8)

program crashed: KASAN: slab-use-after-free Read in afs_dynroot_readdir
validation run: crashed=true
reproducing took 1h59m12.218039868s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in afs_dynroot_readdir_cells fs/afs/dynroot.c:297 [inline]
BUG: KASAN: slab-use-after-free in afs_dynroot_readdir+0x94e/0xb70 fs/afs/dynroot.c:353
Read of size 4 at addr ffff8880505ab148 by task syz.0.2412/8641

CPU: 3 UID: 0 PID: 8641 Comm: syz.0.2412 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xcd/0x630 mm/kasan/report.c:482
 kasan_report+0xe0/0x110 mm/kasan/report.c:595
 afs_dynroot_readdir_cells fs/afs/dynroot.c:297 [inline]
 afs_dynroot_readdir+0x94e/0xb70 fs/afs/dynroot.c:353
 iterate_dir+0x296/0xaf0 fs/readdir.c:108
 __do_sys_getdents fs/readdir.c:326 [inline]
 __se_sys_getdents fs/readdir.c:312 [inline]
 __x64_sys_getdents+0x13c/0x2b0 fs/readdir.c:312
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f46a618f7c9
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:00007fffa2df5dd8 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007f46a63e5fa0 RCX: 00007f46a618f7c9
RDX: 00000000000000b8 RSI: 0000200000001fc0 RDI: 0000000000000003
RBP: 00007f46a6213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f46a63e5fa0 R14: 00007f46a63e5fa0 R15: 0000000000000003
 </TASK>

Allocated by task 8637:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
 kasan_save_track+0x14/0x30 mm/kasan/common.c:77
 poison_kmalloc_redzone mm/kasan/common.c:400 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:417
 kmalloc_noprof include/linux/slab.h:957 [inline]
 kzalloc_noprof include/linux/slab.h:1094 [inline]
 afs_alloc_cell fs/afs/cell.c:137 [inline]
 afs_lookup_cell+0x8b2/0x1900 fs/afs/cell.c:278
 afs_dynroot_lookup_cell fs/afs/dynroot.c:111 [inline]
 afs_dynroot_lookup+0x2e2/0xa90 fs/afs/dynroot.c:160
 __lookup_slow+0x251/0x460 fs/namei.c:1816
 lookup_slow fs/namei.c:1833 [inline]
 walk_component+0x353/0x5b0 fs/namei.c:2151
 lookup_last fs/namei.c:2652 [inline]
 path_lookupat+0x142/0x6d0 fs/namei.c:2676
 filename_lookup+0x224/0x5f0 fs/namei.c:2705
 user_path_at+0x3a/0x60 fs/namei.c:3215
 do_mount fs/namespace.c:4038 [inline]
 __do_sys_mount fs/namespace.c:4229 [inline]
 __se_sys_mount fs/namespace.c:4206 [inline]
 __x64_sys_mount+0x1fb/0x310 fs/namespace.c:4206
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 8641:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
 kasan_save_track+0x14/0x30 mm/kasan/common.c:77
 __kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:587
 kasan_save_free_info mm/kasan/kasan.h:406 [inline]
 poison_slab_object mm/kasan/common.c:252 [inline]
 __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:284
 kasan_slab_free include/linux/kasan.h:234 [inline]
 slab_free_hook mm/slub.c:2543 [inline]
 slab_free mm/slub.c:6642 [inline]
 kfree+0x2b8/0x6d0 mm/slub.c:6849
 afs_cell_destroy+0x21c/0x310 fs/afs/cell.c:582
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0x79c/0x1530 kernel/rcu/tree.c:2861
 handle_softirqs+0x219/0x8e0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1052
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697

Last potentially related work creation:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
 kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:559
 __call_rcu_common.constprop.0+0xa5/0xa10 kernel/rcu/tree.c:3123
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Second to last potentially related work creation:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
 kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:559
 insert_work+0x36/0x230 kernel/workqueue.c:2186
 __queue_work+0x97e/0x1160 kernel/workqueue.c:2341
 queue_work_on+0x1a4/0x1f0 kernel/workqueue.c:2392
 queue_work include/linux/workqueue.h:669 [inline]
 afs_put_cell.part.0+0x1ab/0x240 fs/afs/cell.c:627
 afs_put_cell fs/afs/cell.c:615 [inline]
 afs_manage_cell_work+0x6ac/0x1960 fs/afs/cell.c:887
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff8880505ab000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 328 bytes inside of
 freed 1024-byte region [ffff8880505ab000, ffff8880505ab400)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880505aa000 pfn:0x505a8
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801b442dc0 ffffea0000afe400 dead000000000002
raw: ffff8880505aa000 000000008010000e 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801b442dc0 ffffea0000afe400 dead000000000002
head: ffff8880505aa000 000000008010000e 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea0001416a01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1235, tgid 1235 (kworker/u32:10), ts 149767312459, free_ts 149723829354
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1af/0x220 mm/page_alloc.c:1845
 prep_new_page mm/page_alloc.c:1853 [inline]
 get_page_from_freelist+0x10a3/0x3a30 mm/page_alloc.c:3879
 __alloc_frozen_pages_noprof+0x25f/0x2470 mm/page_alloc.c:5178
 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2416
 alloc_slab_page mm/slub.c:3059 [inline]
 allocate_slab mm/slub.c:3232 [inline]
 new_slab+0x24a/0x360 mm/slub.c:3286
 ___slab_alloc+0xd79/0x1a50 mm/slub.c:4655
 __slab_alloc.constprop.0+0x63/0x110 mm/slub.c:4778
 __slab_alloc_node mm/slub.c:4854 [inline]
 slab_alloc_node mm/slub.c:5276 [inline]
 __do_kmalloc_node mm/slub.c:5649 [inline]
 __kmalloc_noprof+0x501/0x880 mm/slub.c:5662
 kmalloc_noprof include/linux/slab.h:961 [inline]
 kzalloc_noprof include/linux/slab.h:1094 [inline]
 ieee802_11_parse_elems_full+0x1db/0x3780 net/mac80211/parse.c:1011
 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2470 [inline]
 ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2477 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1569 [inline]
 ieee80211_ibss_rx_queued_mgmt+0xc79/0x2fe0 net/mac80211/ibss.c:1600
 ieee80211_iface_process_skb net/mac80211/iface.c:1702 [inline]
 ieee80211_iface_work+0xe2e/0x1360 net/mac80211/iface.c:1756
 cfg80211_wiphy_work+0x2c7/0x580 net/wireless/core.c:435
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
page last free pid 7400 tgid 7400 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0x7df/0x1160 mm/page_alloc.c:2901
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x4d/0x120 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:352
 kasan_slab_alloc include/linux/kasan.h:252 [inline]
 slab_post_alloc_hook mm/slub.c:4978 [inline]
 slab_alloc_node mm/slub.c:5288 [inline]
 kmem_cache_alloc_noprof+0x250/0x6e0 mm/slub.c:5295
 lsm_inode_alloc security/security.c:761 [inline]
 security_inode_alloc+0x3b/0x2b0 security/security.c:1736
 inode_init_always_gfp+0xce4/0x1030 fs/inode.c:306
 inode_init_always include/linux/fs.h:3314 [inline]
 alloc_inode+0x86/0x240 fs/inode.c:353
 new_inode+0x22/0x1c0 fs/inode.c:1145
 __shmem_get_inode mm/shmem.c:3048 [inline]
 shmem_get_inode+0x19a/0xfb0 mm/shmem.c:3122
 shmem_symlink+0xf8/0x9f0 mm/shmem.c:4096
 vfs_symlink fs/namei.c:4817 [inline]
 vfs_symlink+0x403/0x680 fs/namei.c:4801
 do_symlinkat+0x261/0x310 fs/namei.c:4843
 __do_sys_symlinkat fs/namei.c:4859 [inline]
 __se_sys_symlinkat fs/namei.c:4856 [inline]
 __x64_sys_symlinkat+0x93/0xc0 fs/namei.c:4856
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff8880505ab000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880505ab080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880505ab100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                              ^
 ffff8880505ab180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880505ab200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in afs_dynroot_readdir_cells fs/afs/dynroot.c:297 [inline]
BUG: KASAN: slab-use-after-free in afs_dynroot_readdir+0x94e/0xb70 fs/afs/dynroot.c:353
Read of size 4 at addr ffff8880505ab148 by task syz.0.2412/8641

CPU: 3 UID: 0 PID: 8641 Comm: syz.0.2412 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xcd/0x630 mm/kasan/report.c:482
 kasan_report+0xe0/0x110 mm/kasan/report.c:595
 afs_dynroot_readdir_cells fs/afs/dynroot.c:297 [inline]
 afs_dynroot_readdir+0x94e/0xb70 fs/afs/dynroot.c:353
 iterate_dir+0x296/0xaf0 fs/readdir.c:108
 __do_sys_getdents fs/readdir.c:326 [inline]
 __se_sys_getdents fs/readdir.c:312 [inline]
 __x64_sys_getdents+0x13c/0x2b0 fs/readdir.c:312
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f46a618f7c9
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:00007fffa2df5dd8 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007f46a63e5fa0 RCX: 00007f46a618f7c9
RDX: 00000000000000b8 RSI: 0000200000001fc0 RDI: 0000000000000003
RBP: 00007f46a6213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f46a63e5fa0 R14: 00007f46a63e5fa0 R15: 0000000000000003
 </TASK>

Allocated by task 8637:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
 kasan_save_track+0x14/0x30 mm/kasan/common.c:77
 poison_kmalloc_redzone mm/kasan/common.c:400 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:417
 kmalloc_noprof include/linux/slab.h:957 [inline]
 kzalloc_noprof include/linux/slab.h:1094 [inline]
 afs_alloc_cell fs/afs/cell.c:137 [inline]
 afs_lookup_cell+0x8b2/0x1900 fs/afs/cell.c:278
 afs_dynroot_lookup_cell fs/afs/dynroot.c:111 [inline]
 afs_dynroot_lookup+0x2e2/0xa90 fs/afs/dynroot.c:160
 __lookup_slow+0x251/0x460 fs/namei.c:1816
 lookup_slow fs/namei.c:1833 [inline]
 walk_component+0x353/0x5b0 fs/namei.c:2151
 lookup_last fs/namei.c:2652 [inline]
 path_lookupat+0x142/0x6d0 fs/namei.c:2676
 filename_lookup+0x224/0x5f0 fs/namei.c:2705
 user_path_at+0x3a/0x60 fs/namei.c:3215
 do_mount fs/namespace.c:4038 [inline]
 __do_sys_mount fs/namespace.c:4229 [inline]
 __se_sys_mount fs/namespace.c:4206 [inline]
 __x64_sys_mount+0x1fb/0x310 fs/namespace.c:4206
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 8641:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
 kasan_save_track+0x14/0x30 mm/kasan/common.c:77
 __kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:587
 kasan_save_free_info mm/kasan/kasan.h:406 [inline]
 poison_slab_object mm/kasan/common.c:252 [inline]
 __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:284
 kasan_slab_free include/linux/kasan.h:234 [inline]
 slab_free_hook mm/slub.c:2543 [inline]
 slab_free mm/slub.c:6642 [inline]
 kfree+0x2b8/0x6d0 mm/slub.c:6849
 afs_cell_destroy+0x21c/0x310 fs/afs/cell.c:582
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0x79c/0x1530 kernel/rcu/tree.c:2861
 handle_softirqs+0x219/0x8e0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1052
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697

Last potentially related work creation:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
 kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:559
 __call_rcu_common.constprop.0+0xa5/0xa10 kernel/rcu/tree.c:3123
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Second to last potentially related work creation:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
 kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:559
 insert_work+0x36/0x230 kernel/workqueue.c:2186
 __queue_work+0x97e/0x1160 kernel/workqueue.c:2341
 queue_work_on+0x1a4/0x1f0 kernel/workqueue.c:2392
 queue_work include/linux/workqueue.h:669 [inline]
 afs_put_cell.part.0+0x1ab/0x240 fs/afs/cell.c:627
 afs_put_cell fs/afs/cell.c:615 [inline]
 afs_manage_cell_work+0x6ac/0x1960 fs/afs/cell.c:887
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff8880505ab000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 328 bytes inside of
 freed 1024-byte region [ffff8880505ab000, ffff8880505ab400)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880505aa000 pfn:0x505a8
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801b442dc0 ffffea0000afe400 dead000000000002
raw: ffff8880505aa000 000000008010000e 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801b442dc0 ffffea0000afe400 dead000000000002
head: ffff8880505aa000 000000008010000e 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea0001416a01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1235, tgid 1235 (kworker/u32:10), ts 149767312459, free_ts 149723829354
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1af/0x220 mm/page_alloc.c:1845
 prep_new_page mm/page_alloc.c:1853 [inline]
 get_page_from_freelist+0x10a3/0x3a30 mm/page_alloc.c:3879
 __alloc_frozen_pages_noprof+0x25f/0x2470 mm/page_alloc.c:5178
 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2416
 alloc_slab_page mm/slub.c:3059 [inline]
 allocate_slab mm/slub.c:3232 [inline]
 new_slab+0x24a/0x360 mm/slub.c:3286
 ___slab_alloc+0xd79/0x1a50 mm/slub.c:4655
 __slab_alloc.constprop.0+0x63/0x110 mm/slub.c:4778
 __slab_alloc_node mm/slub.c:4854 [inline]
 slab_alloc_node mm/slub.c:5276 [inline]
 __do_kmalloc_node mm/slub.c:5649 [inline]
 __kmalloc_noprof+0x501/0x880 mm/slub.c:5662
 kmalloc_noprof include/linux/slab.h:961 [inline]
 kzalloc_noprof include/linux/slab.h:1094 [inline]
 ieee802_11_parse_elems_full+0x1db/0x3780 net/mac80211/parse.c:1011
 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2470 [inline]
 ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2477 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1569 [inline]
 ieee80211_ibss_rx_queued_mgmt+0xc79/0x2fe0 net/mac80211/ibss.c:1600
 ieee80211_iface_process_skb net/mac80211/iface.c:1702 [inline]
 ieee80211_iface_work+0xe2e/0x1360 net/mac80211/iface.c:1756
 cfg80211_wiphy_work+0x2c7/0x580 net/wireless/core.c:435
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
page last free pid 7400 tgid 7400 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0x7df/0x1160 mm/page_alloc.c:2901
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x4d/0x120 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:352
 kasan_slab_alloc include/linux/kasan.h:252 [inline]
 slab_post_alloc_hook mm/slub.c:4978 [inline]
 slab_alloc_node mm/slub.c:5288 [inline]
 kmem_cache_alloc_noprof+0x250/0x6e0 mm/slub.c:5295
 lsm_inode_alloc security/security.c:761 [inline]
 security_inode_alloc+0x3b/0x2b0 security/security.c:1736
 inode_init_always_gfp+0xce4/0x1030 fs/inode.c:306
 inode_init_always include/linux/fs.h:3314 [inline]
 alloc_inode+0x86/0x240 fs/inode.c:353
 new_inode+0x22/0x1c0 fs/inode.c:1145
 __shmem_get_inode mm/shmem.c:3048 [inline]
 shmem_get_inode+0x19a/0xfb0 mm/shmem.c:3122
 shmem_symlink+0xf8/0x9f0 mm/shmem.c:4096
 vfs_symlink fs/namei.c:4817 [inline]
 vfs_symlink+0x403/0x680 fs/namei.c:4801
 do_symlinkat+0x261/0x310 fs/namei.c:4843
 __do_sys_symlinkat fs/namei.c:4859 [inline]
 __se_sys_symlinkat fs/namei.c:4856 [inline]
 __x64_sys_symlinkat+0x93/0xc0 fs/namei.c:4856
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff8880505ab000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880505ab080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880505ab100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                              ^
 ffff8880505ab180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880505ab200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================