Extracting prog: 38.748454539s Minimizing prog: 26m31.180021704s Simplifying prog options: 0s Extracting C: 1m28.565767538s Simplifying C: 10m19.697220143s extracting reproducer from 31 programs first checking the prog from the crash report single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$auto_def_blk_fops_fs-adjtimex$auto-write$auto_tomoyo_operations_securityfs_if-mmap$auto-close_range$auto-openat$auto_console_fops_tty_io-openat$auto_stat_fops_per_vm_kvm_main-pread64$auto-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: openat$auto_def_blk_fops_fs(0xffffffffffffff9c, 0x0, 0xc0c00, 0x0) adjtimex$auto(0x0) write$auto_tomoyo_operations_securityfs_if(0xffffffffffffffff, 0x0, 0x0) mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) close_range$auto(0x2, 0x8, 0x0) openat$auto_console_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty0\x00', 0x0, 0x0) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) pread64$auto(0xffffffffffffffff, 0x0, 0x8, 0x8000) read$auto(0x3, 0x0, 0x80) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) write$auto(r0, 0x0, 0x9) (fail_nth: 7) program crashed: KASAN: slab-use-after-free Read in __free_filter single: successfully extracted reproducer found reproducer with 11 syscalls minimizing guilty program testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$auto_def_blk_fops_fs-adjtimex$auto-write$auto_tomoyo_operations_securityfs_if-mmap$auto-close_range$auto-openat$auto_console_fops_tty_io-openat$auto_stat_fops_per_vm_kvm_main-pread64$auto-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events detailed listing: executing program 0: openat$auto_def_blk_fops_fs(0xffffffffffffff9c, 0x0, 0xc0c00, 0x0) adjtimex$auto(0x0) write$auto_tomoyo_operations_securityfs_if(0xffffffffffffffff, 0x0, 0x0) mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) close_range$auto(0x2, 0x8, 0x0) openat$auto_console_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty0\x00', 0x0, 0x0) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) pread64$auto(0xffffffffffffffff, 0x0, 0x8, 0x8000) read$auto(0x3, 0x0, 0x80) openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) program did not crash testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$auto_def_blk_fops_fs-adjtimex$auto-write$auto_tomoyo_operations_securityfs_if-mmap$auto-close_range$auto-openat$auto_console_fops_tty_io-openat$auto_stat_fops_per_vm_kvm_main-pread64$auto-read$auto-write$auto detailed listing: executing program 0: openat$auto_def_blk_fops_fs(0xffffffffffffff9c, 0x0, 0xc0c00, 0x0) adjtimex$auto(0x0) write$auto_tomoyo_operations_securityfs_if(0xffffffffffffffff, 0x0, 0x0) mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) close_range$auto(0x2, 0x8, 0x0) openat$auto_console_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty0\x00', 0x0, 0x0) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) pread64$auto(0xffffffffffffffff, 0x0, 0x8, 0x8000) read$auto(0x3, 0x0, 0x80) write$auto(0xffffffffffffffff, 0x0, 0x9) (fail_nth: 7) program did not crash testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$auto_def_blk_fops_fs-adjtimex$auto-write$auto_tomoyo_operations_securityfs_if-mmap$auto-close_range$auto-openat$auto_console_fops_tty_io-openat$auto_stat_fops_per_vm_kvm_main-pread64$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: openat$auto_def_blk_fops_fs(0xffffffffffffff9c, 0x0, 0xc0c00, 0x0) adjtimex$auto(0x0) write$auto_tomoyo_operations_securityfs_if(0xffffffffffffffff, 0x0, 0x0) mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) close_range$auto(0x2, 0x8, 0x0) openat$auto_console_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty0\x00', 0x0, 0x0) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) pread64$auto(0xffffffffffffffff, 0x0, 0x8, 0x8000) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) write$auto(r0, 0x0, 0x9) (fail_nth: 7) program did not crash testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$auto_def_blk_fops_fs-adjtimex$auto-write$auto_tomoyo_operations_securityfs_if-mmap$auto-close_range$auto-openat$auto_console_fops_tty_io-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: openat$auto_def_blk_fops_fs(0xffffffffffffff9c, 0x0, 0xc0c00, 0x0) adjtimex$auto(0x0) write$auto_tomoyo_operations_securityfs_if(0xffffffffffffffff, 0x0, 0x0) mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) close_range$auto(0x2, 0x8, 0x0) openat$auto_console_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty0\x00', 0x0, 0x0) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) read$auto(0x3, 0x0, 0x80) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) write$auto(r0, 0x0, 0x9) (fail_nth: 7) program crashed: KASAN: slab-use-after-free Read in __free_filter testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$auto_def_blk_fops_fs-adjtimex$auto-write$auto_tomoyo_operations_securityfs_if-mmap$auto-close_range$auto-openat$auto_console_fops_tty_io-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: openat$auto_def_blk_fops_fs(0xffffffffffffff9c, 0x0, 0xc0c00, 0x0) adjtimex$auto(0x0) write$auto_tomoyo_operations_securityfs_if(0xffffffffffffffff, 0x0, 0x0) mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) close_range$auto(0x2, 0x8, 0x0) openat$auto_console_fops_tty_io(0xffffffffffffff9c, &(0x7f0000000000)='/dev/tty0\x00', 0x0, 0x0) read$auto(0x3, 0x0, 0x80) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) write$auto(r0, 0x0, 0x9) (fail_nth: 7) program did not crash testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$auto_def_blk_fops_fs-adjtimex$auto-write$auto_tomoyo_operations_securityfs_if-mmap$auto-close_range$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: openat$auto_def_blk_fops_fs(0xffffffffffffff9c, 0x0, 0xc0c00, 0x0) adjtimex$auto(0x0) write$auto_tomoyo_operations_securityfs_if(0xffffffffffffffff, 0x0, 0x0) mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) close_range$auto(0x2, 0x8, 0x0) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) read$auto(0x3, 0x0, 0x80) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) write$auto(r0, 0x0, 0x9) (fail_nth: 7) program crashed: KASAN: slab-use-after-free Read in __free_filter testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$auto_def_blk_fops_fs-adjtimex$auto-write$auto_tomoyo_operations_securityfs_if-mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: openat$auto_def_blk_fops_fs(0xffffffffffffff9c, 0x0, 0xc0c00, 0x0) adjtimex$auto(0x0) write$auto_tomoyo_operations_securityfs_if(0xffffffffffffffff, 0x0, 0x0) mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) read$auto(0x3, 0x0, 0x80) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) write$auto(r0, 0x0, 0x9) (fail_nth: 7) program crashed: KASAN: slab-use-after-free Read in __free_filter testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$auto_def_blk_fops_fs-adjtimex$auto-write$auto_tomoyo_operations_securityfs_if-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: openat$auto_def_blk_fops_fs(0xffffffffffffff9c, 0x0, 0xc0c00, 0x0) adjtimex$auto(0x0) write$auto_tomoyo_operations_securityfs_if(0xffffffffffffffff, 0x0, 0x0) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) read$auto(0x3, 0x0, 0x80) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) write$auto(r0, 0x0, 0x9) (fail_nth: 7) program did not crash testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$auto_def_blk_fops_fs-adjtimex$auto-mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: openat$auto_def_blk_fops_fs(0xffffffffffffff9c, 0x0, 0xc0c00, 0x0) adjtimex$auto(0x0) mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) read$auto(0x3, 0x0, 0x80) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) write$auto(r0, 0x0, 0x9) (fail_nth: 7) program crashed: KASAN: slab-use-after-free Read in __free_filter testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$auto_def_blk_fops_fs-mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: openat$auto_def_blk_fops_fs(0xffffffffffffff9c, 0x0, 0xc0c00, 0x0) mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) read$auto(0x3, 0x0, 0x80) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) write$auto(r0, 0x0, 0x9) (fail_nth: 7) program crashed: KASAN: slab-use-after-free Read in __free_filter testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) read$auto(0x3, 0x0, 0x80) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) write$auto(r0, 0x0, 0x9) (fail_nth: 7) program crashed: KASAN: slab-use-after-free Read in __free_filter testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) read$auto(0x3, 0x0, 0x80) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) write$auto(r0, 0x0, 0x9) program did not crash testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, 0x0, 0x20000, 0x0) read$auto(0x3, 0x0, 0x80) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, &(0x7f00000006c0)='/sys/kernel/debug/tracing/events/vmalloc/filter\x00', 0x103041, 0x0) write$auto(r0, 0x0, 0x9) (fail_nth: 7) program did not crash testing program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto detailed listing: executing program 0: mmap$auto(0x0, 0x400008, 0xdf, 0x9b72, 0x0, 0x100000000008000) openat$auto_stat_fops_per_vm_kvm_main(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/fail_io_timeout/probability\x00', 0x20000, 0x0) read$auto(0x3, 0x0, 0x80) r0 = openat$auto_ftrace_subsystem_filter_fops_trace_events(0xffffffffffffff9c, 0x0, 0x103041, 0x0) write$auto(r0, 0x0, 0x9) (fail_nth: 7) program did not crash extracting C reproducer testing compiled C program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto program crashed: KASAN: slab-use-after-free Read in __free_filter simplifying C reproducer testing compiled C program (duration=45.838843777s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto program crashed: KASAN: slab-use-after-free Read in __free_filter testing compiled C program (duration=45.838843777s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto program crashed: KASAN: slab-use-after-free Read in __free_filter testing compiled C program (duration=45.838843777s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto program crashed: KASAN: slab-use-after-free Read in __free_filter testing compiled C program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto program crashed: KASAN: slab-use-after-free Read in __free_filter testing compiled C program (duration=45.838843777s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto program crashed: KASAN: slab-use-after-free Read in __free_filter testing compiled C program (duration=45.838843777s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto program crashed: KASAN: slab-use-after-free Read in __free_filter testing compiled C program (duration=45.838843777s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$auto-openat$auto_stat_fops_per_vm_kvm_main-read$auto-openat$auto_ftrace_subsystem_filter_fops_trace_events-write$auto program crashed: KASAN: slab-use-after-free Read in __free_filter reproducing took 38m58.19148241s repro crashed as (corrupted=false): RBP: 0000000000000001 R08: 00007ffd64d283c7 R09: 00007f705d680037 R10: 0000000000000001 R11: 0000000000000246 R12: 00007f705d683618 R13: 00007ffd64d28808 R14: 0000000000000001 R15: 0000000000000001 ================================================================== BUG: KASAN: slab-use-after-free in free_prog kernel/trace/trace_events_filter.c:1288 [inline] BUG: KASAN: slab-use-after-free in __free_filter.part.0+0x153/0x160 kernel/trace/trace_events_filter.c:1312 Read of size 8 at addr ffff888021ab2740 by task syz-executor177/5827 CPU: 0 UID: 0 PID: 5827 Comm: syz-executor177 Not tainted 6.16.0-rc3-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: __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:408 [inline] print_report+0xcd/0x680 mm/kasan/report.c:521 kasan_report+0xe0/0x110 mm/kasan/report.c:634 free_prog kernel/trace/trace_events_filter.c:1288 [inline] __free_filter.part.0+0x153/0x160 kernel/trace/trace_events_filter.c:1312 __free_filter kernel/trace/trace_events_filter.c:1309 [inline] filter_free_subsystem_filters kernel/trace/trace_events_filter.c:1470 [inline] apply_subsystem_event_filter+0x1487/0x17a0 kernel/trace/trace_events_filter.c:2512 subsystem_filter_write+0x95/0x120 kernel/trace/trace_events.c:2304 vfs_write+0x2a0/0x1150 fs/read_write.c:684 ksys_write+0x12a/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f705d6183a9 Code: 48 83 c4 28 c3 e8 17 1a 00 00 0f 1f 80 00 00 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd64d28628 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ffd64d28630 RCX: 00007f705d6183a9 RDX: 0000000000000009 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 0000000000000001 R08: 00007ffd64d283c7 R09: 00007f705d680037 R10: 0000000000000001 R11: 0000000000000246 R12: 00007f705d683618 R13: 00007ffd64d28808 R14: 0000000000000001 R15: 0000000000000001 Allocated by task 36: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] create_new_subsystem kernel/trace/trace_events.c:2742 [inline] event_subsystem_dir kernel/trace/trace_events.c:2815 [inline] event_create_dir+0x906/0xd40 kernel/trace/trace_events.c:3037 __trace_early_add_event_dirs+0xae/0x210 kernel/trace/trace_events.c:4199 early_event_add_tracer kernel/trace/trace_events.c:4386 [inline] event_trace_init+0x144/0x1f0 kernel/trace/trace_events.c:4540 tracer_init_tracefs_work_func+0x12/0x3d0 kernel/trace/trace.c:10480 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402 kthread+0x3c5/0x780 kernel/kthread.c:464 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Freed by task 5827: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kfree+0x2b4/0x4d0 mm/slub.c:4842 __free_filter kernel/trace/trace_events_filter.c:1309 [inline] free_filter_list+0xa5/0x240 kernel/trace/trace_events_filter.c:1357 filter_free_subsystem_filters kernel/trace/trace_events_filter.c:1463 [inline] apply_subsystem_event_filter+0x12be/0x17a0 kernel/trace/trace_events_filter.c:2512 subsystem_filter_write+0x95/0x120 kernel/trace/trace_events.c:2304 vfs_write+0x2a0/0x1150 fs/read_write.c:684 ksys_write+0x12a/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888021ab2740 which belongs to the cache kmalloc-16 of size 16 The buggy address is located 0 bytes inside of freed 16-byte region [ffff888021ab2740, ffff888021ab2750) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x21ab2 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000000 ffff88801b841640 ffffea00008ebb40 dead000000000002 raw: 0000000000000000 0000000000800080 00000000f5000000 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 21, tgid 21 (cpuhp/1), ts 5875901035, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1c0/0x230 mm/page_alloc.c:1704 prep_new_page mm/page_alloc.c:1712 [inline] get_page_from_freelist+0x1321/0x3890 mm/page_alloc.c:3669 __alloc_frozen_pages_noprof+0x261/0x23f0 mm/page_alloc.c:4959 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2451 [inline] allocate_slab mm/slub.c:2619 [inline] new_slab+0x23b/0x330 mm/slub.c:2673 ___slab_alloc+0xd9c/0x1940 mm/slub.c:3859 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3949 __slab_alloc_node mm/slub.c:4024 [inline] slab_alloc_node mm/slub.c:4185 [inline] __do_kmalloc_node mm/slub.c:4327 [inline] __kmalloc_node_track_caller_noprof+0x2ee/0x510 mm/slub.c:4347 kvasprintf+0xbc/0x160 lib/kasprintf.c:25 kasprintf+0xc7/0x100 lib/kasprintf.c:59 device_get_devnode+0x163/0x2c0 drivers/base/core.c:3982 dev_uevent+0x4a4/0x820 drivers/base/core.c:2671 kobject_uevent_env+0x657/0x1870 lib/kobject_uevent.c:573 device_add+0x10dd/0x1a70 drivers/base/core.c:3673 device_create_groups_vargs+0x1f8/0x270 drivers/base/core.c:4374 device_create+0xed/0x130 drivers/base/core.c:4413 page_owner free stack trace missing Memory state around the buggy address: ffff888021ab2600: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc ffff888021ab2680: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc >ffff888021ab2700: 00 00 fc fc 00 00 fc fc fa fb fc fc 00 00 fc fc ^ ffff888021ab2780: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc ffff888021ab2800: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc ================================================================== final repro crashed as (corrupted=false): RBP: 0000000000000001 R08: 00007ffd64d283c7 R09: 00007f705d680037 R10: 0000000000000001 R11: 0000000000000246 R12: 00007f705d683618 R13: 00007ffd64d28808 R14: 0000000000000001 R15: 0000000000000001 ================================================================== BUG: KASAN: slab-use-after-free in free_prog kernel/trace/trace_events_filter.c:1288 [inline] BUG: KASAN: slab-use-after-free in __free_filter.part.0+0x153/0x160 kernel/trace/trace_events_filter.c:1312 Read of size 8 at addr ffff888021ab2740 by task syz-executor177/5827 CPU: 0 UID: 0 PID: 5827 Comm: syz-executor177 Not tainted 6.16.0-rc3-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: __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:408 [inline] print_report+0xcd/0x680 mm/kasan/report.c:521 kasan_report+0xe0/0x110 mm/kasan/report.c:634 free_prog kernel/trace/trace_events_filter.c:1288 [inline] __free_filter.part.0+0x153/0x160 kernel/trace/trace_events_filter.c:1312 __free_filter kernel/trace/trace_events_filter.c:1309 [inline] filter_free_subsystem_filters kernel/trace/trace_events_filter.c:1470 [inline] apply_subsystem_event_filter+0x1487/0x17a0 kernel/trace/trace_events_filter.c:2512 subsystem_filter_write+0x95/0x120 kernel/trace/trace_events.c:2304 vfs_write+0x2a0/0x1150 fs/read_write.c:684 ksys_write+0x12a/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f705d6183a9 Code: 48 83 c4 28 c3 e8 17 1a 00 00 0f 1f 80 00 00 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd64d28628 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ffd64d28630 RCX: 00007f705d6183a9 RDX: 0000000000000009 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 0000000000000001 R08: 00007ffd64d283c7 R09: 00007f705d680037 R10: 0000000000000001 R11: 0000000000000246 R12: 00007f705d683618 R13: 00007ffd64d28808 R14: 0000000000000001 R15: 0000000000000001 Allocated by task 36: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] create_new_subsystem kernel/trace/trace_events.c:2742 [inline] event_subsystem_dir kernel/trace/trace_events.c:2815 [inline] event_create_dir+0x906/0xd40 kernel/trace/trace_events.c:3037 __trace_early_add_event_dirs+0xae/0x210 kernel/trace/trace_events.c:4199 early_event_add_tracer kernel/trace/trace_events.c:4386 [inline] event_trace_init+0x144/0x1f0 kernel/trace/trace_events.c:4540 tracer_init_tracefs_work_func+0x12/0x3d0 kernel/trace/trace.c:10480 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402 kthread+0x3c5/0x780 kernel/kthread.c:464 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Freed by task 5827: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kfree+0x2b4/0x4d0 mm/slub.c:4842 __free_filter kernel/trace/trace_events_filter.c:1309 [inline] free_filter_list+0xa5/0x240 kernel/trace/trace_events_filter.c:1357 filter_free_subsystem_filters kernel/trace/trace_events_filter.c:1463 [inline] apply_subsystem_event_filter+0x12be/0x17a0 kernel/trace/trace_events_filter.c:2512 subsystem_filter_write+0x95/0x120 kernel/trace/trace_events.c:2304 vfs_write+0x2a0/0x1150 fs/read_write.c:684 ksys_write+0x12a/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888021ab2740 which belongs to the cache kmalloc-16 of size 16 The buggy address is located 0 bytes inside of freed 16-byte region [ffff888021ab2740, ffff888021ab2750) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x21ab2 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000000 ffff88801b841640 ffffea00008ebb40 dead000000000002 raw: 0000000000000000 0000000000800080 00000000f5000000 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 21, tgid 21 (cpuhp/1), ts 5875901035, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1c0/0x230 mm/page_alloc.c:1704 prep_new_page mm/page_alloc.c:1712 [inline] get_page_from_freelist+0x1321/0x3890 mm/page_alloc.c:3669 __alloc_frozen_pages_noprof+0x261/0x23f0 mm/page_alloc.c:4959 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2451 [inline] allocate_slab mm/slub.c:2619 [inline] new_slab+0x23b/0x330 mm/slub.c:2673 ___slab_alloc+0xd9c/0x1940 mm/slub.c:3859 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3949 __slab_alloc_node mm/slub.c:4024 [inline] slab_alloc_node mm/slub.c:4185 [inline] __do_kmalloc_node mm/slub.c:4327 [inline] __kmalloc_node_track_caller_noprof+0x2ee/0x510 mm/slub.c:4347 kvasprintf+0xbc/0x160 lib/kasprintf.c:25 kasprintf+0xc7/0x100 lib/kasprintf.c:59 device_get_devnode+0x163/0x2c0 drivers/base/core.c:3982 dev_uevent+0x4a4/0x820 drivers/base/core.c:2671 kobject_uevent_env+0x657/0x1870 lib/kobject_uevent.c:573 device_add+0x10dd/0x1a70 drivers/base/core.c:3673 device_create_groups_vargs+0x1f8/0x270 drivers/base/core.c:4374 device_create+0xed/0x130 drivers/base/core.c:4413 page_owner free stack trace missing Memory state around the buggy address: ffff888021ab2600: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc ffff888021ab2680: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc >ffff888021ab2700: 00 00 fc fc 00 00 fc fc fa fb fc fc 00 00 fc fc ^ ffff888021ab2780: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc ffff888021ab2800: 00 00 fc fc 00 00 fc fc 00 00 fc fc 00 00 fc fc ==================================================================