./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3846055846 <...> Warning: Permanently added '10.128.0.81' (ED25519) to the list of known hosts. execve("./syz-executor3846055846", ["./syz-executor3846055846"], 0x7ffdedd51120 /* 10 vars */) = 0 brk(NULL) = 0x555582f1d000 brk(0x555582f1de00) = 0x555582f1de00 arch_prctl(ARCH_SET_FS, 0x555582f1d480) = 0 set_tid_address(0x555582f1d750) = 289 set_robust_list(0x555582f1d760, 24) = 0 rseq(0x555582f1dda0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3846055846", 4096) = 28 getrandom("\x57\x5d\x68\x27\x05\x8a\x4e\xa0", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555582f1de00 brk(0x555582f3ee00) = 0x555582f3ee00 brk(0x555582f3f000) = 0x555582f3f000 mprotect(0x7f3cc8915000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0executing program ) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555582f1d750) = 290 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 write(3, "20", 2) = 2 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 write(3, "7 4 1 3", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 write(3, "290", 3) = 3 close(3) = 0 kill(290, SIGKILL) = 0 ./strace-static-x86_64: Process 290 attached [pid 290] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=290, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f3cc886c4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f3cc88744a0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f3cc886c4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f3cc88744a0}, NULL, 8) = 0 write(1, "executing program\n", 18) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3cc0462000 write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 munmap(0x7f3cc0462000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 32.025227][ T28] audit: type=1400 audit(1749629355.041:64): avc: denied { execmem } for pid=289 comm="syz-executor384" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 32.041894][ T289] loop0: detected capacity change from 0 to 512 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 0777) = 0 [ 32.050346][ T28] audit: type=1400 audit(1749629355.041:65): avc: denied { read write } for pid=289 comm="syz-executor384" name="loop0" dev="devtmpfs" ino=118 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 32.088376][ T289] EXT4-fs (loop0): Test dummy encryption mode enabled [ 32.097255][ T289] EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support! [ 32.108970][ T28] audit: type=1400 audit(1749629355.041:66): avc: denied { open } for pid=289 comm="syz-executor384" path="/dev/loop0" dev="devtmpfs" ino=118 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 32.141010][ T289] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 32.153118][ T28] audit: type=1400 audit(1749629355.041:67): avc: denied { ioctl } for pid=289 comm="syz-executor384" path="/dev/loop0" dev="devtmpfs" ino=118 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 32.154679][ T289] EXT4-fs (loop0): 1 truncate cleaned up [ 32.184093][ T28] audit: type=1400 audit(1749629355.071:68): avc: denied { mounton } for pid=289 comm="syz-executor384" path="/root/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 32.192191][ T289] EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none. mount("/dev/loop0", "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "ext4", MS_DIRSYNC|MS_I_VERSION, "test_dummy_encryption,journal_ioprio=0x0000000000000001,stripe=0x0000000000000000,,errors=continue") = 0 openat(AT_FDCWD, "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 open(".", O_RDONLY) = 4 [ 32.242736][ T28] audit: type=1400 audit(1749629355.111:69): avc: denied { module_request } for pid=289 comm="syz-executor384" kmod="crypto-hmac(sha512)" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1 [ 32.277708][ T28] audit: type=1400 audit(1749629355.291:70): avc: denied { mount } for pid=289 comm="syz-executor384" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 32.308380][ T28] audit: type=1400 audit(1749629355.321:71): avc: denied { write } for pid=289 comm="syz-executor384" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 32.314541][ T289] fscrypt: AES-256-XTS using implementation "xts-aes-aesni" creat("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 5 mknod("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 0 [ 32.334014][ T28] audit: type=1400 audit(1749629355.321:72): avc: denied { add_name } for pid=289 comm="syz-executor384" name="file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 32.344835][ T289] fscrypt: AES-256-CTS-CBC using implementation "cts-cbc-aes-aesni" symlink("./file0", "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 creat("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = -1 EPERM (Operation not permitted) lseek(4, 2047, SEEK_CUR) = 2047 [ 32.391459][ T28] audit: type=1400 audit(1749629355.321:73): avc: denied { create } for pid=289 comm="syz-executor384" name="file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 32.401591][ T289] EXT4-fs warning (device loop0): __ext4fs_dirhash:270: inode #2: comm syz-executor384: Siphash requires key [ 32.458502][ T289] EXT4-fs warning (device loop0): dx_probe:845: inode #2: comm syz-executor384: Hash code is SIPHASH, but hash not in dirent [ 32.473414][ T289] EXT4-fs warning (device loop0): dx_probe:966: inode #2: comm syz-executor384: Corrupt directory, running e2fsck is recommended [ 32.488239][ T289] ================================================================== [ 32.496871][ T289] BUG: KASAN: use-after-free in __ext4_check_dir_entry+0x7c2/0x970 [ 32.505513][ T289] Read of size 2 at addr ffff888123721003 by task syz-executor384/289 [ 32.515549][ T289] [ 32.517903][ T289] CPU: 1 PID: 289 Comm: syz-executor384 Not tainted 6.1.138-syzkaller-00003-g47e5d7e91778 #0 [ 32.528801][ T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 32.541103][ T289] Call Trace: [ 32.544855][ T289] [ 32.547974][ T289] __dump_stack+0x21/0x24 [ 32.552595][ T289] dump_stack_lvl+0xee/0x150 [ 32.557481][ T289] ? __cfi_dump_stack_lvl+0x8/0x8 [ 32.563342][ T289] ? __cfi__printk+0x8/0x8 [ 32.567884][ T289] ? __getblk_gfp+0x3b/0x7d0 [ 32.572579][ T289] ? __ext4_check_dir_entry+0x7c2/0x970 [ 32.578797][ T289] print_address_description+0x71/0x210 [ 32.584647][ T289] print_report+0x4a/0x60 [ 32.589748][ T289] kasan_report+0x122/0x150 [ 32.594281][ T289] ? __ext4_check_dir_entry+0x7c2/0x970 [ 32.600299][ T289] __asan_report_load2_noabort+0x14/0x20 [ 32.606486][ T289] __ext4_check_dir_entry+0x7c2/0x970 [ 32.612828][ T289] ext4_readdir+0x1266/0x3c10 [ 32.618072][ T289] ? __kasan_check_write+0x14/0x20 [ 32.623407][ T289] ? __cfi_ext4_readdir+0x10/0x10 [ 32.629766][ T289] ? downgrade_write+0x350/0x350 [ 32.635011][ T289] ? __kasan_check_write+0x14/0x20 [ 32.640233][ T289] ? _raw_spin_lock_irq+0x8f/0xe0 [ 32.645628][ T289] ? avc_policy_seqno+0x1b/0x70 [ 32.650982][ T289] ? down_read_killable+0xb6/0x100 [ 32.656908][ T289] ? __cfi_down_read_killable+0x10/0x10 [ 32.662735][ T289] ? fsnotify_perm+0x269/0x5b0 [ 32.667820][ T289] ? security_file_permission+0x94/0xb0 [ 32.673824][ T289] iterate_dir+0x271/0x610 [ 32.678935][ T289] ? __cfi_ext4_readdir+0x10/0x10 [ 32.684758][ T289] __se_sys_getdents64+0xe5/0x240 [ 32.690410][ T289] ? __x64_sys_getdents64+0x90/0x90 [ 32.696078][ T289] ? xfd_validate_state+0x70/0x150 [ 32.701472][ T289] ? __cfi_filldir64+0x10/0x10 [ 32.706695][ T289] ? fpregs_restore_userregs+0x128/0x260 [ 32.712470][ T289] __x64_sys_getdents64+0x7b/0x90 [ 32.717525][ T289] x64_sys_call+0x15c/0x9a0 [ 32.722036][ T289] do_syscall_64+0x4c/0xa0 [ 32.726661][ T289] ? clear_bhb_loop+0x15/0x70 [ 32.731615][ T289] ? clear_bhb_loop+0x15/0x70 [ 32.737095][ T289] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 32.743471][ T289] RIP: 0033:0x7f3cc88a1499 [ 32.748202][ T289] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 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 [ 32.768876][ T289] RSP: 002b:00007fffd7fb3e98 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 [ 32.778038][ T289] RAX: ffffffffffffffda RBX: 6f6972706f695f6c RCX: 00007f3cc88a1499 [ 32.786645][ T289] RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000004 [ 32.795020][ T289] RBP: 00007fffd7fb3f68 R08: 00007f3cc88ea160 R09: 00007f3cc88ea160 [ 32.803828][ T289] R10: 00007f3cc88ea160 R11: 0000000000000246 R12: 0000000000000000 [ 32.812783][ T289] R13: 00007fffd7fb4208 R14: 0000000000000001 R15: 0000000000000001 [ 32.821850][ T289] [ 32.825237][ T289] [ 32.827752][ T289] The buggy address belongs to the physical page: [ 32.834251][ T289] page:ffffea00048dc840 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x123721 [ 32.844888][ T289] flags: 0x4000000000000000(zone=1) [ 32.850692][ T289] raw: 4000000000000000 ffffea00048dc888 ffffea00048cba48 0000000000000000 [ 32.860156][ T289] raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 [ 32.869526][ T289] page dumped because: kasan: bad access detected [ 32.876137][ T289] page_owner tracks the page as freed [ 32.881857][ T289] page last allocated via order 0, migratetype Movable, gfp_mask 0x8140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO|__GFP_CMA), pid 277, tgid 277 (sshd-session), ts 24349860188, free_ts 24371354877 [ 32.901494][ T289] post_alloc_hook+0x1f5/0x210 [ 32.906383][ T289] prep_new_page+0x1c/0x110 [ 32.911343][ T289] get_page_from_freelist+0x2c6e/0x2ce0 [ 32.917532][ T289] __alloc_pages+0x19e/0x3a0 [ 32.922952][ T289] __folio_alloc+0x12/0x40 [ 32.927741][ T289] handle_mm_fault+0x18ef/0x2640 [ 32.932794][ T289] do_user_addr_fault+0x905/0x1050 [ 32.938047][ T289] exc_page_fault+0x51/0xb0 [ 32.942567][ T289] asm_exc_page_fault+0x27/0x30 [ 32.947858][ T289] page last free stack trace: [ 32.953006][ T289] free_unref_page_prepare+0x742/0x750 [ 32.960044][ T289] free_unref_page_list+0xba/0x7c0 [ 32.965561][ T289] release_pages+0xad1/0xb20 [ 32.970784][ T289] free_pages_and_swap_cache+0x86/0xa0 [ 32.976706][ T289] tlb_finish_mmu+0x1aa/0x370 [ 32.981489][ T289] unmap_region+0x28d/0x2e0 [ 32.986133][ T289] do_mas_align_munmap+0xb94/0x11b0 [ 32.991367][ T289] do_mas_munmap+0x241/0x2b0 [ 32.996096][ T289] __vm_munmap+0x19f/0x2f0 [ 33.000787][ T289] __x64_sys_munmap+0x6b/0x80 [ 33.005951][ T289] x64_sys_call+0x8a/0x9a0 [ 33.010484][ T289] do_syscall_64+0x4c/0xa0 [ 33.014948][ T289] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 33.020897][ T289] [ 33.023243][ T289] Memory state around the buggy address: [ 33.029052][ T289] ffff888123720f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 33.037483][ T289] ffff888123720f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 33.045858][ T289] >ffff888123721000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.054372][ T289] ^ [ 33.058464][ T289] ffff888123721080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.066813][ T289] ffff888123721100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff getdents64(4, NULL /* 0 entries */, 16) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 33.075156][ T289] ========================================