Extracting prog: 1m21.628686402s
Minimizing prog: 10m55.080930989s
Simplifying prog options: 0s
Extracting C: 34.479464771s
Simplifying C: 3m30.18354482s


extracting reproducer from 29 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): fcntl$addseals-mkdirat-mount-openat-openat$sndtimer-read$FUSE-sendmsg$NFQNL_MSG_CONFIG-add_key$keyring-add_key
detailed listing:
executing program 0:
fcntl$addseals(0xffffffffffffffff, 0x409, 0x7)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)
sendmsg$NFQNL_MSG_CONFIG(0xffffffffffffffff, 0x0, 0x0)
r1 = add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)
add_key(0x0, 0x0, 0x0, 0x0, r1)

program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
single: successfully extracted reproducer
found reproducer with 9 syscalls
minimizing guilty program
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): fcntl$addseals-mkdirat-mount-openat-openat$sndtimer-read$FUSE-sendmsg$NFQNL_MSG_CONFIG-add_key$keyring
detailed listing:
executing program 0:
fcntl$addseals(0xffffffffffffffff, 0x409, 0x7)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)
sendmsg$NFQNL_MSG_CONFIG(0xffffffffffffffff, 0x0, 0x0)
add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff)

program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): fcntl$addseals-mkdirat-mount-openat-openat$sndtimer-read$FUSE-sendmsg$NFQNL_MSG_CONFIG
detailed listing:
executing program 0:
fcntl$addseals(0xffffffffffffffff, 0x409, 0x7)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)
sendmsg$NFQNL_MSG_CONFIG(0xffffffffffffffff, 0x0, 0x0)

program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): fcntl$addseals-mkdirat-mount-openat-openat$sndtimer-read$FUSE
detailed listing:
executing program 0:
fcntl$addseals(0xffffffffffffffff, 0x409, 0x7)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)

program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): fcntl$addseals-mkdirat-mount-openat-openat$sndtimer
detailed listing:
executing program 0:
fcntl$addseals(0xffffffffffffffff, 0x409, 0x7)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
openat$sndtimer(0xffffffffffffff9c, 0x0, 0x0)

program did not crash
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): fcntl$addseals-mkdirat-mount-openat-read$FUSE
detailed listing:
executing program 0:
fcntl$addseals(0xffffffffffffffff, 0x409, 0x7)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)

program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): fcntl$addseals-mkdirat-mount-read$FUSE
detailed listing:
executing program 0:
fcntl$addseals(0xffffffffffffffff, 0x409, 0x7)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
read$FUSE(0xffffffffffffffff, &(0x7f0000002440)={0x2020}, 0x204e)

program did not crash
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): fcntl$addseals-mkdirat-openat-read$FUSE
detailed listing:
executing program 0:
fcntl$addseals(0xffffffffffffffff, 0x409, 0x7)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)

program did not crash
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): fcntl$addseals-mount-openat-read$FUSE
detailed listing:
executing program 0:
fcntl$addseals(0xffffffffffffffff, 0x409, 0x7)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)

program did not crash
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)

program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)

program did not crash
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)

program did not crash
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)

program did not crash
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x101002, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)

program did not crash
testing program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
read$FUSE(r0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=35.453618932s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
simplifying C reproducer
testing compiled C program (duration=35.453618932s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
testing compiled C program (duration=35.453618932s, {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}}): mkdirat-mount-openat-read$FUSE
program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
testing compiled C program (duration=35.453618932s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
testing compiled C program (duration=35.453618932s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
testing compiled C program (duration=35.453618932s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
testing compiled C program (duration=35.453618932s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
testing program (duration=35.453618932s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)

program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
validation run: crashed=true
testing program (duration=35.453618932s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)

program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
validation run: crashed=true
testing program (duration=35.453618932s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-read$FUSE
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./sys/module/firmware_class/parameters/path\x00', 0x101002, 0x0)
read$FUSE(r0, &(0x7f0000002440)={0x2020}, 0x204e)

program crashed: KASAN: slab-out-of-bounds Write in firmware_param_path_get
validation run: crashed=true
reproducing took 17m48.034602169s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-out-of-bounds in firmware_param_path_get+0x348/0x350 drivers/base/firmware_loader/main.c:531
Write of size 1 at addr ffff8881114e5fff by task syz.2.17/369

CPU: 0 PID: 369 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0x10f/0x150 mm/kasan/report.c:444
 __asan_report_store1_noabort+0x17/0x20 mm/kasan/report_generic.c:311
 firmware_param_path_get+0x348/0x350 drivers/base/firmware_loader/main.c:531
 param_attr_show+0x150/0x1b0 kernel/params.c:567
 module_attr_show+0x56/0x70 kernel/params.c:886
 sysfs_kf_seq_show+0x266/0x3d0 fs/sysfs/file.c:61
 kernfs_seq_show+0x119/0x160 fs/kernfs/file.c:168
 seq_read_iter+0x472/0xce0 fs/seq_file.c:230
 kernfs_fop_read_iter+0x146/0x460 fs/kernfs/file.c:241
 call_read_iter include/linux/fs.h:2206 [inline]
 new_sync_read fs/read_write.c:404 [inline]
 vfs_read+0x6c0/0xc20 fs/read_write.c:485
 ksys_read+0x14a/0x260 fs/read_write.c:623
 __do_sys_read fs/read_write.c:633 [inline]
 __se_sys_read fs/read_write.c:631 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:631
 x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f6caeffdf99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff4e37a878 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f6caf285fa0 RCX: 00007f6caeffdf99
RDX: 000000000000204e RSI: 0000200000002440 RDI: 0000000000000003
RBP: 00007f6caf094ec4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6caf285fac R14: 00007f6caf285fa0 R15: 00007f6caf285fa0
 </TASK>

Allocated by task 101:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:433 [inline]
 ____kasan_kmalloc mm/kasan/common.c:512 [inline]
 __kasan_kmalloc+0xd4/0x100 mm/kasan/common.c:521
 kasan_kmalloc include/linux/kasan.h:227 [inline]
 __kmalloc+0x13d/0x2c0 mm/slub.c:4436
 __kmalloc_node include/linux/slab.h:487 [inline]
 kmalloc_node include/linux/slab.h:642 [inline]
 kvmalloc_node+0x211/0x320 mm/util.c:621
 kvmalloc include/linux/mm.h:862 [inline]
 seq_buf_alloc fs/seq_file.c:38 [inline]
 seq_read_iter+0x1f1/0xce0 fs/seq_file.c:210
 kernfs_fop_read_iter+0x146/0x460 fs/kernfs/file.c:241
 call_read_iter include/linux/fs.h:2206 [inline]
 new_sync_read fs/read_write.c:404 [inline]
 vfs_read+0x6c0/0xc20 fs/read_write.c:485
 ksys_read+0x14a/0x260 fs/read_write.c:623
 __do_sys_read fs/read_write.c:633 [inline]
 __se_sys_read fs/read_write.c:631 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:631
 x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Freed by task 101:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4a/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:365
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
 kasan_slab_free include/linux/kasan.h:193 [inline]
 slab_free_hook mm/slub.c:1728 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1754
 slab_free mm/slub.c:3526 [inline]
 kfree+0xc4/0x270 mm/slub.c:4588
 kvfree+0x35/0x40 mm/util.c:661
 seq_release+0x57/0x70 fs/seq_file.c:355
 kernfs_fop_release+0x195/0x240 fs/kernfs/file.c:761
 __fput+0x22b/0x900 fs/file_table.c:311
 ____fput+0x15/0x20 fs/file_table.c:339
 task_work_run+0x127/0x190 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff8881114e4000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 4095 bytes to the right of
 4096-byte region [ffff8881114e4000, ffff8881114e5000)
The buggy address belongs to the page:
page:ffffea0004453800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1114e0
head:ffffea0004453800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043380
raw: 0000000000000000 0000000080040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 112, ts 4689070060, free_ts 0
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2607
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2613
 get_page_from_freelist+0x2c3a/0x2cd0 mm/page_alloc.c:4487
 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5824
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1937 [inline]
 new_slab+0xa0/0x4d0 mm/slub.c:2000
 ___slab_alloc+0x3ac/0x840 mm/slub.c:3033
 __slab_alloc+0x49/0x90 mm/slub.c:3120
 slab_alloc_node mm/slub.c:3211 [inline]
 slab_alloc mm/slub.c:3255 [inline]
 kmem_cache_alloc_trace+0x146/0x270 mm/slub.c:3272
 kmalloc include/linux/slab.h:619 [inline]
 kzalloc include/linux/slab.h:750 [inline]
 kernfs_iop_get_link+0x66/0x600 fs/kernfs/symlink.c:136
 vfs_readlink+0x16f/0x3e0 fs/namei.c:5089
 do_readlinkat+0x251/0x490 fs/stat.c:454
 __do_sys_readlink fs/stat.c:475 [inline]
 __se_sys_readlink fs/stat.c:472 [inline]
 __x64_sys_readlink+0x7f/0x90 fs/stat.c:472
 x64_sys_call+0x93c/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:90
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
page_owner free stack trace missing

Memory state around the buggy address:
 ffff8881114e5e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881114e5f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881114e5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                                ^
 ffff8881114e6000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881114e6080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-out-of-bounds in firmware_param_path_get+0x348/0x350 drivers/base/firmware_loader/main.c:531
Write of size 1 at addr ffff8881114e5fff by task syz.2.17/369

CPU: 0 PID: 369 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0x10f/0x150 mm/kasan/report.c:444
 __asan_report_store1_noabort+0x17/0x20 mm/kasan/report_generic.c:311
 firmware_param_path_get+0x348/0x350 drivers/base/firmware_loader/main.c:531
 param_attr_show+0x150/0x1b0 kernel/params.c:567
 module_attr_show+0x56/0x70 kernel/params.c:886
 sysfs_kf_seq_show+0x266/0x3d0 fs/sysfs/file.c:61
 kernfs_seq_show+0x119/0x160 fs/kernfs/file.c:168
 seq_read_iter+0x472/0xce0 fs/seq_file.c:230
 kernfs_fop_read_iter+0x146/0x460 fs/kernfs/file.c:241
 call_read_iter include/linux/fs.h:2206 [inline]
 new_sync_read fs/read_write.c:404 [inline]
 vfs_read+0x6c0/0xc20 fs/read_write.c:485
 ksys_read+0x14a/0x260 fs/read_write.c:623
 __do_sys_read fs/read_write.c:633 [inline]
 __se_sys_read fs/read_write.c:631 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:631
 x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f6caeffdf99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff4e37a878 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f6caf285fa0 RCX: 00007f6caeffdf99
RDX: 000000000000204e RSI: 0000200000002440 RDI: 0000000000000003
RBP: 00007f6caf094ec4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6caf285fac R14: 00007f6caf285fa0 R15: 00007f6caf285fa0
 </TASK>

Allocated by task 101:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:433 [inline]
 ____kasan_kmalloc mm/kasan/common.c:512 [inline]
 __kasan_kmalloc+0xd4/0x100 mm/kasan/common.c:521
 kasan_kmalloc include/linux/kasan.h:227 [inline]
 __kmalloc+0x13d/0x2c0 mm/slub.c:4436
 __kmalloc_node include/linux/slab.h:487 [inline]
 kmalloc_node include/linux/slab.h:642 [inline]
 kvmalloc_node+0x211/0x320 mm/util.c:621
 kvmalloc include/linux/mm.h:862 [inline]
 seq_buf_alloc fs/seq_file.c:38 [inline]
 seq_read_iter+0x1f1/0xce0 fs/seq_file.c:210
 kernfs_fop_read_iter+0x146/0x460 fs/kernfs/file.c:241
 call_read_iter include/linux/fs.h:2206 [inline]
 new_sync_read fs/read_write.c:404 [inline]
 vfs_read+0x6c0/0xc20 fs/read_write.c:485
 ksys_read+0x14a/0x260 fs/read_write.c:623
 __do_sys_read fs/read_write.c:633 [inline]
 __se_sys_read fs/read_write.c:631 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:631
 x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Freed by task 101:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4a/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:365
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
 kasan_slab_free include/linux/kasan.h:193 [inline]
 slab_free_hook mm/slub.c:1728 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1754
 slab_free mm/slub.c:3526 [inline]
 kfree+0xc4/0x270 mm/slub.c:4588
 kvfree+0x35/0x40 mm/util.c:661
 seq_release+0x57/0x70 fs/seq_file.c:355
 kernfs_fop_release+0x195/0x240 fs/kernfs/file.c:761
 __fput+0x22b/0x900 fs/file_table.c:311
 ____fput+0x15/0x20 fs/file_table.c:339
 task_work_run+0x127/0x190 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff8881114e4000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 4095 bytes to the right of
 4096-byte region [ffff8881114e4000, ffff8881114e5000)
The buggy address belongs to the page:
page:ffffea0004453800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1114e0
head:ffffea0004453800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043380
raw: 0000000000000000 0000000080040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 112, ts 4689070060, free_ts 0
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2607
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2613
 get_page_from_freelist+0x2c3a/0x2cd0 mm/page_alloc.c:4487
 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5824
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1937 [inline]
 new_slab+0xa0/0x4d0 mm/slub.c:2000
 ___slab_alloc+0x3ac/0x840 mm/slub.c:3033
 __slab_alloc+0x49/0x90 mm/slub.c:3120
 slab_alloc_node mm/slub.c:3211 [inline]
 slab_alloc mm/slub.c:3255 [inline]
 kmem_cache_alloc_trace+0x146/0x270 mm/slub.c:3272
 kmalloc include/linux/slab.h:619 [inline]
 kzalloc include/linux/slab.h:750 [inline]
 kernfs_iop_get_link+0x66/0x600 fs/kernfs/symlink.c:136
 vfs_readlink+0x16f/0x3e0 fs/namei.c:5089
 do_readlinkat+0x251/0x490 fs/stat.c:454
 __do_sys_readlink fs/stat.c:475 [inline]
 __se_sys_readlink fs/stat.c:472 [inline]
 __x64_sys_readlink+0x7f/0x90 fs/stat.c:472
 x64_sys_call+0x93c/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:90
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
page_owner free stack trace missing

Memory state around the buggy address:
 ffff8881114e5e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881114e5f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881114e5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                                ^
 ffff8881114e6000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881114e6080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================