./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3080837154 <...> Warning: Permanently added '10.128.1.28' (ED25519) to the list of known hosts. execve("./syz-executor3080837154", ["./syz-executor3080837154"], 0x7ffc57d59f30 /* 10 vars */) = 0 brk(NULL) = 0x55555edc6000 brk(0x55555edc6d40) = 0x55555edc6d40 arch_prctl(ARCH_SET_FS, 0x55555edc63c0) = 0 set_tid_address(0x55555edc6690) = 287 set_robust_list(0x55555edc66a0, 24) = 0 rseq(0x55555edc6ce0, 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-executor3080837154", 4096) = 28 getrandom("\x7b\x33\x12\xa9\xc3\x21\x23\x04", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555edc6d40 brk(0x55555ede7d40) = 0x55555ede7d40 brk(0x55555ede8000) = 0x55555ede8000 mprotect(0x7f68417ac000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 write(1, "executing program\n", 18executing program ) = 18 futex(0x7f68417b260c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f6841751000, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f68417426b0}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f68416c9000 mprotect(0x7f68416ca000, 131072, PROT_READ|PROT_WRITE) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f68416e9990, parent_tid=0x7f68416e9990, exit_signal=0, stack=0x7f68416c9000, stack_size=0x20300, tls=0x7f68416e96c0}./strace-static-x86_64: Process 288 attached => {parent_tid=[288]}, 88) = 288 [pid 288] set_robust_list(0x7f68416e99a0, 24) = 0 [pid 288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 288] futex(0x7f68417b2608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 287] futex(0x7f68417b2608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 288] <... futex resumed>) = 0 [pid 288] memfd_create("syzkaller", 0) = 3 [pid 288] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f68392c9000 [pid 287] futex(0x7f68417b260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 288] 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 [pid 288] munmap(0x7f68392c9000, 138412032) = 0 [pid 288] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 288] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 288] close(3) = 0 [ 20.763016][ T24] audit: type=1400 audit(1727901456.840:66): avc: denied { execmem } for pid=287 comm="syz-executor308" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 20.776212][ T24] audit: type=1400 audit(1727901456.850:67): avc: denied { read write } for pid=287 comm="syz-executor308" name="loop0" dev="devtmpfs" ino=111 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 20.783051][ T24] audit: type=1400 audit(1727901456.850:68): avc: denied { open } for pid=287 comm="syz-executor308" path="/dev/loop0" dev="devtmpfs" ino=111 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 20.806933][ T24] audit: type=1400 audit(1727901456.850:69): avc: denied { ioctl } for pid=287 comm="syz-executor308" path="/dev/loop0" dev="devtmpfs" ino=111 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 288] close(4) = 0 [pid 288] mkdir("./file0", 0777) = 0 [ 20.908439][ T24] audit: type=1400 audit(1727901456.990:70): avc: denied { mounton } for pid=287 comm="syz-executor308" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 288] mount("/dev/loop0", "./file0", "ext4", 0, "noauto_da_alloc,quota,noload,jqfmt=vfsold,,errors=continue") = 0 [pid 288] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 288] chdir("./file0") = 0 [pid 288] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 288] ioctl(4, LOOP_CLR_FD) = 0 [pid 288] close(4) = 0 [pid 288] futex(0x7f68417b260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f68417b2608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f68417b260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [pid 288] chdir("./file0") = 0 [pid 288] futex(0x7f68417b260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f68417b2608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f68417b260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [pid 288] creat("./bus", 0107) = 4 [pid 288] futex(0x7f68417b260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f68417b2608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f68417b260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [pid 288] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 288] futex(0x7f68417b260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f68417b2608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f68417b260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [pid 288] open("./bus", O_RDWR|O_NOCTTY|O_SYNC|O_DIRECT|O_CLOEXEC) = 5 [pid 288] futex(0x7f68417b260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f68417b2608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f68417b260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [pid 288] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 288] futex(0x7f68417b260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f68417b2608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f68417b260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [pid 288] ioctl(-1, KDFONTOP, 0x20001fc0) = -1 EBADF (Bad file descriptor) [pid 288] futex(0x7f68417b260c, FUTEX_WAKE_PRIVATE, 1000000 [pid 287] <... futex resumed>) = 0 [pid 287] futex(0x7f68417b2608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 287] futex(0x7f68417b260c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 288] <... futex resumed>) = 1 [ 20.952467][ T288] EXT4-fs (loop0): 1 truncate cleaned up [ 20.957958][ T288] EXT4-fs (loop0): mounted filesystem without journal. Opts: noauto_da_alloc,quota,noload,jqfmt=vfsold,,errors=continue [ 20.970564][ T24] audit: type=1400 audit(1727901457.050:71): avc: denied { mount } for pid=287 comm="syz-executor308" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 20.981426][ T288] ================================================================== [ 21.000079][ T288] BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x11b3/0x3a60 [ 21.000117][ T24] audit: type=1400 audit(1727901457.050:72): avc: denied { write } for pid=287 comm="syz-executor308" name="file0" dev="loop0" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.007697][ T288] Read of size 18446744073709551600 at addr ffff888111798fb8 by task syz-executor308/288 [ 21.007700][ T288] [ 21.007713][ T288] CPU: 0 PID: 288 Comm: syz-executor308 Not tainted 5.10.226-syzkaller-00709-ge5e5644ea27f #0 [ 21.007720][ T288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 21.007732][ T288] Call Trace: [ 21.007750][ T288] dump_stack_lvl+0x1e2/0x24b [ 21.007771][ T288] ? bfq_pos_tree_add_move+0x43b/0x43b [ 21.030596][ T24] audit: type=1400 audit(1727901457.050:73): avc: denied { add_name } for pid=287 comm="syz-executor308" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.039373][ T288] ? panic+0x812/0x812 [ 21.039387][ T288] print_address_description+0x81/0x3b0 [ 21.039399][ T288] kasan_report+0x179/0x1c0 [ 21.039421][ T288] ? ext4_xattr_set_entry+0x11b3/0x3a60 [ 21.041958][ T24] audit: type=1400 audit(1727901457.050:74): avc: denied { create } for pid=287 comm="syz-executor308" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 21.051609][ T288] ? ext4_xattr_set_entry+0x11b3/0x3a60 [ 21.051621][ T288] kasan_check_range+0x293/0x2a0 [ 21.051633][ T288] ? ext4_xattr_set_entry+0x11b3/0x3a60 [ 21.051651][ T288] memmove+0x2d/0x70 [ 21.061881][ T24] audit: type=1400 audit(1727901457.050:75): avc: denied { write open } for pid=287 comm="syz-executor308" path="/root/file0/file0/bus" dev="loop0" ino=18 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 21.064637][ T288] ext4_xattr_set_entry+0x11b3/0x3a60 [ 21.182325][ T288] ? ext4_get_group_desc+0x191/0x2b0 [ 21.187531][ T288] ? ext4_xattr_ibody_set+0x390/0x390 [ 21.192725][ T288] ? ext4_get_inode_loc+0x1d0/0x1d0 [ 21.197774][ T288] ? ____kasan_kmalloc+0xed/0x110 [ 21.202638][ T288] ? ____kasan_kmalloc+0xdb/0x110 [ 21.207479][ T288] ? __kasan_kmalloc+0x9/0x10 [ 21.211994][ T288] ? __kmalloc+0x1aa/0x330 [ 21.216254][ T288] ? ext4_convert_inline_data_nolock+0x116/0xd80 [ 21.222433][ T288] ? ext4_add_entry+0x6c2/0x1280 [ 21.227289][ T288] ? errseq_check+0x41/0x70 [ 21.231629][ T288] ? __ext4_journal_get_write_access+0x21a/0x490 [ 21.237797][ T288] ext4_xattr_ibody_set+0x124/0x390 [ 21.242830][ T288] ext4_destroy_inline_data_nolock+0x1d3/0x5d0 [ 21.248817][ T288] ? ext4_destroy_inline_data+0xe0/0xe0 [ 21.254370][ T288] ? __ext4_check_dir_entry+0x59c/0x880 [ 21.259759][ T288] ? ext4_check_all_de+0x61/0x100 [ 21.264610][ T288] ? ext4_check_all_de+0xc7/0x100 [ 21.269472][ T288] ext4_convert_inline_data_nolock+0x3d8/0xd80 [ 21.275465][ T288] ? ext4_add_dirent_to_inline+0x4a0/0x4a0 [ 21.281107][ T288] ? __kasan_check_read+0x11/0x20 [ 21.285965][ T288] ? get_max_inline_xattr_value_size+0x4f7/0x640 [ 21.292125][ T288] ext4_try_add_inline_entry+0x805/0xb60 [ 21.297596][ T288] ? security_dentry_create_files_as+0xc0/0xc0 [ 21.303583][ T288] ? ext4_da_write_inline_data_end+0x280/0x280 [ 21.309573][ T288] ? ext4_fname_setup_ci_filename+0x70/0x480 [ 21.315387][ T288] ext4_add_entry+0x6c2/0x1280 [ 21.319989][ T288] ? ext4_inc_count+0x190/0x190 [ 21.324679][ T288] ? dquot_initialize+0x20/0x20 [ 21.329359][ T288] ? ext4_lookup+0x549/0xaa0 [ 21.333788][ T288] ext4_add_nondir+0x97/0x270 [ 21.338306][ T288] ext4_create+0x348/0x530 [ 21.342559][ T288] ? ext4_lookup+0xaa0/0xaa0 [ 21.346978][ T288] ? selinux_inode_create+0x22/0x30 [ 21.352014][ T288] ? security_inode_create+0xbc/0x100 [ 21.357221][ T288] ? ext4_lookup+0xaa0/0xaa0 [ 21.361647][ T288] path_openat+0x1377/0x3000 [ 21.366083][ T288] ? do_filp_open+0x460/0x460 [ 21.370591][ T288] do_filp_open+0x21c/0x460 [ 21.374925][ T288] ? vfs_tmpfile+0x2b0/0x2b0 [ 21.379453][ T288] ? get_unused_fd_flags+0x94/0xa0 [ 21.384384][ T288] do_sys_openat2+0x13f/0x710 [ 21.388904][ T288] ? ptrace_stop+0x6dc/0xa30 [ 21.393338][ T288] ? do_sys_open+0x220/0x220 [ 21.397769][ T288] ? _raw_spin_unlock_irq+0x4e/0x70 [ 21.402795][ T288] ? ptrace_notify+0x24c/0x350 [ 21.407395][ T288] __x64_sys_openat+0x243/0x290 [ 21.412075][ T288] ? __ia32_sys_open+0x270/0x270 [ 21.416854][ T288] ? irqentry_exit_to_user_mode+0x41/0x80 [ 21.422404][ T288] ? syscall_enter_from_user_mode+0x57/0x1a0 [ 21.428217][ T288] do_syscall_64+0x34/0x70 [ 21.432475][ T288] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.438199][ T288] RIP: 0033:0x7f684172b1a9 [ 21.442448][ T288] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 b0 ff ff ff f7 d8 64 89 01 48 [ 21.461894][ T288] RSP: 002b:00007f68416e9218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 21.470132][ T288] RAX: ffffffffffffffda RBX: 00007f68417b2608 RCX: 00007f684172b1a9 [ 21.477946][ T288] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 21.485758][ T288] RBP: 00007f68417b2600 R08: 0000000000000000 R09: 0000000000000000 [ 21.493570][ T288] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f684177f4cc [ 21.501554][ T288] R13: 0030656c69662f2e R14: 6f6f6c2f7665642f R15: 746174732e757063 [ 21.509363][ T288] [ 21.511530][ T288] The buggy address belongs to the page: [ 21.517022][ T288] page:ffffea000445e600 refcount:3 mapcount:1 mapping:ffff888100448f50 index:0x1 pfn:0x111798 [ 21.527075][ T288] aops:def_blk_aops ino:0 [ 21.531239][ T288] flags: 0x400000000002203e(referenced|uptodate|dirty|lru|active|private|mappedtodisk) [ 21.540722][ T288] raw: 400000000002203e ffffea0004217ec8 ffffea000421e0c8 ffff888100448f50 [ 21.549121][ T288] raw: 0000000000000001 ffff88811ca3fe70 0000000300000000 ffff888100146000 [ 21.557535][ T288] page dumped because: kasan: bad access detected [ 21.563782][ T288] page->mem_cgroup:ffff888100146000 [ 21.568824][ T288] page_owner tracks the page as allocated [ 21.574378][ T288] page last allocated via order 0, migratetype Movable, gfp_mask 0x108c48(GFP_NOFS|__GFP_NOFAIL|__GFP_HARDWALL|__GFP_MOVABLE), pid 288, ts 20950938917, free_ts 15269124046 [ 21.591302][ T288] prep_new_page+0x166/0x180 [ 21.595726][ T288] get_page_from_freelist+0x2d8c/0x2f30 [ 21.601108][ T288] __alloc_pages_nodemask+0x435/0xaf0 [ 21.606316][ T288] pagecache_get_page+0x669/0x950 [ 21.611174][ T288] __getblk_gfp+0x221/0x7e0 [ 21.615512][ T288] __ext4_get_inode_loc+0x4c2/0xbf0 [ 21.620549][ T288] __ext4_iget+0x516/0x41f0 [ 21.624889][ T288] ext4_fill_super+0x734e/0x9150 [ 21.629658][ T288] mount_bdev+0x262/0x370 [ 21.633826][ T288] ext4_mount+0x34/0x40 [ 21.637819][ T288] legacy_get_tree+0xf1/0x190 [ 21.642332][ T288] vfs_get_tree+0x88/0x290 [ 21.646583][ T288] do_new_mount+0x2ba/0xb30 [ 21.650923][ T288] path_mount+0x56f/0xcb0 [ 21.655091][ T288] __se_sys_mount+0x2c4/0x3b0 [ 21.659611][ T288] __x64_sys_mount+0xbf/0xd0 [ 21.664026][ T288] page last free stack trace: [ 21.668546][ T288] free_unref_page_prepare+0x2ae/0x2d0 [ 21.673838][ T288] free_unref_page_list+0x122/0xb20 [ 21.678877][ T288] release_pages+0xea0/0xef0 [ 21.683299][ T288] free_pages_and_swap_cache+0x8a/0xa0 [ 21.688593][ T288] tlb_finish_mmu+0x177/0x320 [ 21.693106][ T288] unmap_region+0x31c/0x370 [ 21.697444][ T288] __do_munmap+0x699/0x8c0 [ 21.701710][ T288] __se_sys_munmap+0x120/0x1a0 [ 21.706475][ T288] __x64_sys_munmap+0x5b/0x70 [ 21.710988][ T288] do_syscall_64+0x34/0x70 [ 21.715246][ T288] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.720963][ T288] [ 21.723133][ T288] Memory state around the buggy address: [ 21.728695][ T288] ffff888111798e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 21.736586][ T288] ffff888111798f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 21.744575][ T288] >ffff888111798f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [pid 288] openat(AT_FDCWD, 0x20000080, O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 287] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 21.752465][ T288] ^ [ 21.758318][ T288] ffff888111799000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 21.766208][ T288] ffff888111799080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 21.774110][ T288] ================================================================== [ 21.782225][ T288] Disabling lock debugging due to kernel taint [ 21.789122][ T288] EXT4-fs error (device loop0): ext4_xattr_ibody_find:2210: inode #12: comm syz-executor308: corrupted in-inode xattr [pid 288] <... openat resumed>) = -1 EUCLEAN (Structure needs cleaning) [pid 288] futex(0x7f68417b260c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 288] futex(0x7f68417b2608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 287] exit_group(0) = ? [pid 288] <... futex resumed>) = ? [pid 288] +++ exited with 0 +++ +++ exited with 0 +++ [ 21.801703][ T288] EXT4-fs warning (device loop0):