Extracting prog: 3m53.307510904s
Minimizing prog: 22m39.111083212s
Simplifying prog options: 0s
Extracting C: 34.005187577s
Simplifying C: 28m56.669281383s
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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount-write$tun
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000) (async)
mount(&(0x7f00000001c0)=@nullb, &(0x7f0000000080)='./cgroup\x00', &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
write$tun(0xffffffffffffffff, 0x0, 0xa2)
program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount-write$tun
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000) (async)
mount(&(0x7f00000001c0)=@nullb, &(0x7f0000000080)='./cgroup\x00', &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
write$tun(0xffffffffffffffff, 0x0, 0xa2)
program crashed: general protection fault in create_empty_buffers
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=1m53.305025899s, {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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000) (async)
mount(&(0x7f00000001c0)=@nullb, &(0x7f0000000080)='./cgroup\x00', &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
program crashed: kernel BUG in __filemap_add_folio
testing program (duration=1m53.305025899s, {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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000) (async)
program did not crash
testing program (duration=1m53.305025899s, {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}}): openat$nullb-mount
detailed listing:
executing program 0:
openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
mount(&(0x7f00000001c0)=@nullb, &(0x7f0000000080)='./cgroup\x00', &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
program did not crash
testing program (duration=1m53.305025899s, {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$FS_IOC_SETFLAGS-mount
detailed listing:
executing program 0:
ioctl$FS_IOC_SETFLAGS(0xffffffffffffffff, 0x40081271, &(0x7f0000000980)=0x4000) (async)
mount(&(0x7f00000001c0)=@nullb, &(0x7f0000000080)='./cgroup\x00', &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
program did not crash
testing program (duration=1m53.305025899s, {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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000)
mount(&(0x7f00000001c0)=@nullb, &(0x7f0000000080)='./cgroup\x00', &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
program did not crash
testing program (duration=1m53.305025899s, {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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, 0x0, 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000) (async)
mount(&(0x7f00000001c0)=@nullb, &(0x7f0000000080)='./cgroup\x00', &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
program did not crash
testing program (duration=1m53.305025899s, {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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, 0x0) (async)
mount(&(0x7f00000001c0)=@nullb, &(0x7f0000000080)='./cgroup\x00', &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
program did not crash
testing program (duration=1m53.305025899s, {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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000) (async)
mount(0x0, &(0x7f0000000080)='./cgroup\x00', &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
program did not crash
testing program (duration=1m53.305025899s, {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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000) (async)
mount(&(0x7f00000001c0)=@nullb, 0x0, &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
program did not crash
testing program (duration=1m53.305025899s, {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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000) (async)
mount(&(0x7f00000001c0)=@nullb, &(0x7f0000000080)='./cgroup\x00', 0x0, 0x4418, 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=1m53.305025899s, {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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program crashed: kernel BUG in __filemap_add_folio
simplifying C reproducer
testing compiled C program (duration=1m53.305025899s, {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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program did not crash
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program did not crash
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program did not crash
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false 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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program did not crash
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false 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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program did not crash
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false 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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program crashed: general protection fault in create_empty_buffers
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false 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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false 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}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program did not crash
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program crashed: kernel BUG in __filemap_add_folio
testing compiled C program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
program crashed: kernel BUG in __filemap_add_folio
testing program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000) (async)
mount(&(0x7f00000001c0)=@nullb, &(0x7f0000000080)='./cgroup\x00', &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
program crashed: kernel BUG in __filemap_add_folio
validation run: crashed=true
testing program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000) (async)
mount(&(0x7f00000001c0)=@nullb, &(0x7f0000000080)='./cgroup\x00', &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
program crashed: kernel BUG in __filemap_add_folio
validation run: crashed=true
testing program (duration=1m53.305025899s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-ioctl$FS_IOC_SETFLAGS-mount
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)
ioctl$FS_IOC_SETFLAGS(r0, 0x40081271, &(0x7f0000000980)=0x4000) (async)
mount(&(0x7f00000001c0)=@nullb, &(0x7f0000000080)='./cgroup\x00', &(0x7f00000000c0)='btrfs\x00', 0x4418, 0x0)
program crashed: general protection fault in create_empty_buffers
validation run: crashed=true
reproducing took 1h1m42.847059601s
repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 10411 Comm: syz.0.1635 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:create_empty_buffers+0x48/0x530 fs/buffer.c:1694
Code: 00 00 00 00 fc ff df e8 36 71 74 ff 48 89 df 4c 89 e6 ba 40 8c 40 00 e8 16 c5 ff ff 49 89 c4 48 89 04 24 4c 89 e0 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 e7 e8 59 4c db ff 4d 09 3c 24 49 83 c4
RSP: 0018:ffffc9000c8a7868 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffea0001609980 RCX: ffff888077b68000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000c8a79f8 R08: ffffea0001609987 R09: 1ffffd40002c1330
R10: dffffc0000000000 R11: fffff940002c1331 R12: 0000000000000000
R13: ffffea0001609988 R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f15c3fff6c0(0000) GS:ffff8881259bd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f15c3ffef98 CR3: 0000000078c10000 CR4: 00000000003526f0
Call Trace:
block_read_full_folio+0x116/0x830 fs/buffer.c:2403
filemap_read_folio+0x117/0x380 mm/filemap.c:2496
do_read_cache_folio+0x358/0x590 mm/filemap.c:4096
do_read_cache_page mm/filemap.c:4162 [inline]
read_cache_page_gfp+0x2a/0x130 mm/filemap.c:4195
btrfs_read_disk_super+0x206/0x560 fs/btrfs/volumes.c:1367
btrfs_scan_one_device+0xd1/0x680 fs/btrfs/volumes.c:1475
btrfs_get_tree_super fs/btrfs/super.c:1858 [inline]
btrfs_get_tree_subvol fs/btrfs/super.c:2087 [inline]
btrfs_get_tree+0x4ab/0x1930 fs/btrfs/super.c:2121
vfs_get_tree+0x92/0x2a0 fs/super.c:1751
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3630 [inline]
do_new_mount+0x302/0xa10 fs/namespace.c:3706
do_mount fs/namespace.c:4029 [inline]
__do_sys_mount fs/namespace.c:4218 [inline]
__se_sys_mount+0x313/0x410 fs/namespace.c:4195
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f15c318f749
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:00007f15c3fff038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f15c33e6090 RCX: 00007f15c318f749
RDX: 00002000000000c0 RSI: 0000200000000080 RDI: 00002000000001c0
RBP: 00007f15c3213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004418 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f15c33e6128 R14: 00007f15c33e6090 R15: 00007fff0289a0e8
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:create_empty_buffers+0x48/0x530 fs/buffer.c:1694
Code: 00 00 00 00 fc ff df e8 36 71 74 ff 48 89 df 4c 89 e6 ba 40 8c 40 00 e8 16 c5 ff ff 49 89 c4 48 89 04 24 4c 89 e0 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 e7 e8 59 4c db ff 4d 09 3c 24 49 83 c4
RSP: 0018:ffffc9000c8a7868 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffea0001609980 RCX: ffff888077b68000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000c8a79f8 R08: ffffea0001609987 R09: 1ffffd40002c1330
R10: dffffc0000000000 R11: fffff940002c1331 R12: 0000000000000000
R13: ffffea0001609988 R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f15c3fff6c0(0000) GS:ffff888125abd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1fffd156c0 CR3: 0000000078c10000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 6 bytes skipped:
0: df e8 fucomip %st(0),%st
2: 36 71 74 ss jno 0x79
5: ff 48 89 decl -0x77(%rax)
8: df 4c 89 e6 fisttps -0x1a(%rcx,%rcx,4)
c: ba 40 8c 40 00 mov $0x408c40,%edx
11: e8 16 c5 ff ff call 0xffffc52c
16: 49 89 c4 mov %rax,%r12
19: 48 89 04 24 mov %rax,(%rsp)
1d: 4c 89 e0 mov %r12,%rax
20: 48 c1 e8 03 shr $0x3,%rax
* 24: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction
29: 74 08 je 0x33
2b: 4c 89 e7 mov %r12,%rdi
2e: e8 59 4c db ff call 0xffdb4c8c
33: 4d 09 3c 24 or %r15,(%r12)
37: 49 rex.WB
38: 83 .byte 0x83
39: c4 .byte 0xc4
final repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 10411 Comm: syz.0.1635 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:create_empty_buffers+0x48/0x530 fs/buffer.c:1694
Code: 00 00 00 00 fc ff df e8 36 71 74 ff 48 89 df 4c 89 e6 ba 40 8c 40 00 e8 16 c5 ff ff 49 89 c4 48 89 04 24 4c 89 e0 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 e7 e8 59 4c db ff 4d 09 3c 24 49 83 c4
RSP: 0018:ffffc9000c8a7868 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffea0001609980 RCX: ffff888077b68000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000c8a79f8 R08: ffffea0001609987 R09: 1ffffd40002c1330
R10: dffffc0000000000 R11: fffff940002c1331 R12: 0000000000000000
R13: ffffea0001609988 R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f15c3fff6c0(0000) GS:ffff8881259bd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f15c3ffef98 CR3: 0000000078c10000 CR4: 00000000003526f0
Call Trace:
block_read_full_folio+0x116/0x830 fs/buffer.c:2403
filemap_read_folio+0x117/0x380 mm/filemap.c:2496
do_read_cache_folio+0x358/0x590 mm/filemap.c:4096
do_read_cache_page mm/filemap.c:4162 [inline]
read_cache_page_gfp+0x2a/0x130 mm/filemap.c:4195
btrfs_read_disk_super+0x206/0x560 fs/btrfs/volumes.c:1367
btrfs_scan_one_device+0xd1/0x680 fs/btrfs/volumes.c:1475
btrfs_get_tree_super fs/btrfs/super.c:1858 [inline]
btrfs_get_tree_subvol fs/btrfs/super.c:2087 [inline]
btrfs_get_tree+0x4ab/0x1930 fs/btrfs/super.c:2121
vfs_get_tree+0x92/0x2a0 fs/super.c:1751
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3630 [inline]
do_new_mount+0x302/0xa10 fs/namespace.c:3706
do_mount fs/namespace.c:4029 [inline]
__do_sys_mount fs/namespace.c:4218 [inline]
__se_sys_mount+0x313/0x410 fs/namespace.c:4195
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f15c318f749
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:00007f15c3fff038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f15c33e6090 RCX: 00007f15c318f749
RDX: 00002000000000c0 RSI: 0000200000000080 RDI: 00002000000001c0
RBP: 00007f15c3213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004418 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f15c33e6128 R14: 00007f15c33e6090 R15: 00007fff0289a0e8
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:create_empty_buffers+0x48/0x530 fs/buffer.c:1694
Code: 00 00 00 00 fc ff df e8 36 71 74 ff 48 89 df 4c 89 e6 ba 40 8c 40 00 e8 16 c5 ff ff 49 89 c4 48 89 04 24 4c 89 e0 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 e7 e8 59 4c db ff 4d 09 3c 24 49 83 c4
RSP: 0018:ffffc9000c8a7868 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffea0001609980 RCX: ffff888077b68000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000c8a79f8 R08: ffffea0001609987 R09: 1ffffd40002c1330
R10: dffffc0000000000 R11: fffff940002c1331 R12: 0000000000000000
R13: ffffea0001609988 R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f15c3fff6c0(0000) GS:ffff888125abd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1fffd156c0 CR3: 0000000078c10000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 6 bytes skipped:
0: df e8 fucomip %st(0),%st
2: 36 71 74 ss jno 0x79
5: ff 48 89 decl -0x77(%rax)
8: df 4c 89 e6 fisttps -0x1a(%rcx,%rcx,4)
c: ba 40 8c 40 00 mov $0x408c40,%edx
11: e8 16 c5 ff ff call 0xffffc52c
16: 49 89 c4 mov %rax,%r12
19: 48 89 04 24 mov %rax,(%rsp)
1d: 4c 89 e0 mov %r12,%rax
20: 48 c1 e8 03 shr $0x3,%rax
* 24: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction
29: 74 08 je 0x33
2b: 4c 89 e7 mov %r12,%rdi
2e: e8 59 4c db ff call 0xffdb4c8c
33: 4d 09 3c 24 or %r15,(%r12)
37: 49 rex.WB
38: 83 .byte 0x83
39: c4 .byte 0xc4