./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3290809023

<...>
Warning: Permanently added '10.128.1.15' (ED25519) to the list of known hosts.
execve("./syz-executor3290809023", ["./syz-executor3290809023"], 0x7ffd05141850 /* 10 vars */) = 0
brk(NULL)                               = 0x55558e59e000
brk(0x55558e59ee00)                     = 0x55558e59ee00
arch_prctl(ARCH_SET_FS, 0x55558e59e480) = 0
set_tid_address(0x55558e59e750)         = 5825
set_robust_list(0x55558e59e760, 24)     = 0
rseq(0x55558e59eda0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3290809023", 4096) = 28
getrandom("\x0f\x38\x48\x65\x59\xb9\xc9\xea", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55558e59ee00
brk(0x55558e5bfe00)                     = 0x55558e5bfe00
brk(0x55558e5c0000)                     = 0x55558e5c0000
mprotect(0x7f652e2b0000, 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, 0) = 0x200000000000
mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000
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=0x7f652e202a60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f652e20b4f0}, NULL, 8) = 0
rt_sigaction(SIGBUS, {sa_handler=0x7f652e202a60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f652e20b4f0}, NULL, 8) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = -1 ENXIO (No such device or address)
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5827 attached
 <unfinished ...>
[pid  5827] set_robust_list(0x55558e59e760, 24 <unfinished ...>
[pid  5825] <... clone resumed>, child_tidptr=0x55558e59e750) = 5827
[pid  5827] <... set_robust_list resumed>) = 0
[pid  5827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5827] setpgid(0, 0)               = 0
[pid  5827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5827] write(3, "1000", 4)         = 4
[pid  5827] close(3)                    = 0
[pid  5827] write(1, "executing program\n", 18executing program
) = 18
[pid  5827] memfd_create("syzkaller", 0) = 3
[pid  5827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5827] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5827] munmap(0x7f6525c00000, 138412032) = 0
[pid  5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5827] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5827] close(3)                    = 0
[pid  5827] close(4)                    = 0
[pid  5827] mkdir("./file1", 0777)      = 0
[pid  5827] mount("/dev/loop0", "./file1", "ocfs2", 0, "acl,heartbeat=none,errors=remount-ro,coherency=full,coherency=full,localflocks,intr,noacl,") = 0
[   90.798409][ T5827] loop0: detected capacity change from 0 to 32768
[pid  5827] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3
[pid  5827] chdir("./file1")            = 0
[pid  5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5827] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid  5827] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5827] mkdir("./bus", 0777)        = 0
[pid  5827] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[   90.874193][ T5827] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
[   90.951004][ T5827] overlayfs: failed to create directory ./bus/work (errno: 28); mounting read-only
[   90.961316][ T5827] 
[   90.963666][ T5827] ======================================================
[   90.970686][ T5827] WARNING: possible circular locking dependency detected
[   90.977833][ T5827] 6.15.0-syzkaller-10954-gd00a83477e7a #0 Not tainted
[   90.984690][ T5827] ------------------------------------------------------
[   90.991733][ T5827] syz-executor329/5827 is trying to acquire lock:
[   90.998247][ T5827] ffff888075402640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x125/0x24e0
[   91.012148][ T5827] 
[   91.012148][ T5827] but task is already holding lock:
[   91.019520][ T5827] ffff888075403ff8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0
[   91.029025][ T5827] 
[   91.029025][ T5827] which lock already depends on the new lock.
[   91.029025][ T5827] 
[   91.039612][ T5827] 
[   91.039612][ T5827] the existing dependency chain (in reverse order) is:
[   91.048639][ T5827] 
[   91.048639][ T5827] -> #4 (&oi->ip_xattr_sem){++++}-{4:4}:
[   91.056482][ T5827]        lock_acquire+0x120/0x360
[   91.061604][ T5827]        down_write+0x96/0x1f0
[   91.066449][ T5827]        ocfs2_xattr_set_handle+0x3b0/0x7a0
[   91.072365][ T5827]        ocfs2_init_security_set+0xbd/0xe0
[   91.078190][ T5827]        ocfs2_mknod+0x137f/0x2050
[   91.083346][ T5827]        ocfs2_mkdir+0x191/0x440
[   91.088307][ T5827]        vfs_mkdir+0x303/0x510
[   91.093091][ T5827]        do_mkdirat+0x247/0x590
[   91.097946][ T5827]        __x64_sys_mkdirat+0x87/0xa0
[   91.103503][ T5827]        do_syscall_64+0xfa/0x3b0
[   91.108634][ T5827]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   91.115065][ T5827] 
[   91.115065][ T5827] -> #3 (jbd2_handle){.+.+}-{0:0}:
[   91.122470][ T5827]        lock_acquire+0x120/0x360
[   91.127506][ T5827]        start_this_handle+0x1fa7/0x21c0
[   91.133156][ T5827]        jbd2__journal_start+0x2c1/0x5b0
[   91.138805][ T5827]        jbd2_journal_start+0x2a/0x40
[   91.144282][ T5827]        ocfs2_start_trans+0x376/0x6d0
[   91.149765][ T5827]        ocfs2_reserve_suballoc_bits+0x711/0x4640
[   91.156200][ T5827]        ocfs2_reserve_new_metadata_blocks+0x403/0x940
[   91.163154][ T5827]        ocfs2_mknod+0xe08/0x2050
[   91.168320][ T5827]        ocfs2_mkdir+0x191/0x440
[   91.173364][ T5827]        vfs_mkdir+0x303/0x510
[   91.178167][ T5827]        do_mkdirat+0x247/0x590
[   91.183030][ T5827]        __x64_sys_mkdirat+0x87/0xa0
[   91.188669][ T5827]        do_syscall_64+0xfa/0x3b0
[   91.193966][ T5827]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   91.200553][ T5827] 
[   91.200553][ T5827] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
[   91.209088][ T5827]        lock_acquire+0x120/0x360
[   91.214137][ T5827]        down_read+0x46/0x2e0
[   91.218830][ T5827]        ocfs2_start_trans+0x36a/0x6d0
[   91.224506][ T5827]        ocfs2_reserve_suballoc_bits+0x711/0x4640
[   91.230934][ T5827]        ocfs2_reserve_new_metadata_blocks+0x403/0x940
[   91.237793][ T5827]        ocfs2_mknod+0xe08/0x2050
[   91.243001][ T5827]        ocfs2_mkdir+0x191/0x440
[   91.247954][ T5827]        vfs_mkdir+0x303/0x510
[   91.252723][ T5827]        do_mkdirat+0x247/0x590
[   91.257576][ T5827]        __x64_sys_mkdirat+0x87/0xa0
[   91.263599][ T5827]        do_syscall_64+0xfa/0x3b0
[   91.268740][ T5827]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   91.275182][ T5827] 
[   91.275182][ T5827] -> #1 (sb_internal#2){.+.+}-{0:0}:
[   91.282858][ T5827]        lock_acquire+0x120/0x360
[   91.287912][ T5827]        ocfs2_start_trans+0x26b/0x6d0
[   91.293394][ T5827]        ocfs2_mknod+0xe93/0x2050
[   91.298442][ T5827]        ocfs2_mkdir+0x191/0x440
[   91.303395][ T5827]        vfs_mkdir+0x303/0x510
[   91.308340][ T5827]        do_mkdirat+0x247/0x590
[   91.313199][ T5827]        __x64_sys_mkdirat+0x87/0xa0
[   91.318497][ T5827]        do_syscall_64+0xfa/0x3b0
[   91.323641][ T5827]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   91.330076][ T5827] 
[   91.330076][ T5827] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}:
[   91.340703][ T5827]        validate_chain+0xb9b/0x2140
[   91.346013][ T5827]        __lock_acquire+0xab9/0xd20
[   91.351413][ T5827]        lock_acquire+0x120/0x360
[   91.356476][ T5827]        down_write+0x96/0x1f0
[   91.361285][ T5827]        ocfs2_reserve_local_alloc_bits+0x125/0x24e0
[   91.368033][ T5827]        ocfs2_reserve_clusters_with_limit+0x1be/0xba0
[   91.375596][ T5827]        ocfs2_init_xattr_set_ctxt+0x376/0x700
[   91.381884][ T5827]        ocfs2_xattr_set+0xb70/0x11f0
[   91.387286][ T5827]        __vfs_setxattr+0x43c/0x480
[   91.392504][ T5827]        __vfs_setxattr_noperm+0x12d/0x660
[   91.398328][ T5827]        vfs_setxattr+0x16b/0x2f0
[   91.403361][ T5827]        ovl_init_uuid_xattr+0x53d/0x910
[   91.409007][ T5827]        ovl_fill_super+0x2a69/0x35d0
[   91.414398][ T5827]        get_tree_nodev+0xbb/0x150
[   91.419622][ T5827]        vfs_get_tree+0x8f/0x2b0
[   91.424742][ T5827]        do_new_mount+0x24a/0xa40
[   91.429874][ T5827]        __se_sys_mount+0x317/0x410
[   91.435103][ T5827]        do_syscall_64+0xfa/0x3b0
[   91.440228][ T5827]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   91.446658][ T5827] 
[   91.446658][ T5827] other info that might help us debug this:
[   91.446658][ T5827] 
[   91.457073][ T5827] Chain exists of:
[   91.457073][ T5827]   &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5 --> jbd2_handle --> &oi->ip_xattr_sem
[   91.457073][ T5827] 
[   91.473007][ T5827]  Possible unsafe locking scenario:
[   91.473007][ T5827] 
[   91.480843][ T5827]        CPU0                    CPU1
[   91.486338][ T5827]        ----                    ----
[   91.491754][ T5827]   lock(&oi->ip_xattr_sem);
[   91.496384][ T5827]                                lock(jbd2_handle);
[   91.503004][ T5827]                                lock(&oi->ip_xattr_sem);
[   91.510416][ T5827]   lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5);
[   91.517767][ T5827] 
[   91.517767][ T5827]  *** DEADLOCK ***
[   91.517767][ T5827] 
[   91.526175][ T5827] 3 locks held by syz-executor329/5827:
[   91.531821][ T5827]  #0: ffff88807b4680e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970
[   91.542143][ T5827]  #1: ffff8880754042c0 (&sb->s_type->i_mutex_key#16){+.+.}-{4:4}, at: vfs_setxattr+0x144/0x2f0
[   91.552715][ T5827]  #2: ffff888075403ff8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0
[   91.562960][ T5827] 
[   91.562960][ T5827] stack backtrace:
[   91.568876][ T5827] CPU: 1 UID: 0 PID: 5827 Comm: syz-executor329 Not tainted 6.15.0-syzkaller-10954-gd00a83477e7a #0 PREEMPT(full) 
[   91.568897][ T5827] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[   91.568910][ T5827] Call Trace:
[   91.568922][ T5827]  <TASK>
[   91.568930][ T5827]  dump_stack_lvl+0x189/0x250
[   91.568962][ T5827]  ? __pfx_dump_stack_lvl+0x10/0x10
[   91.568984][ T5827]  ? __pfx__printk+0x10/0x10
[   91.569000][ T5827]  ? print_lock_name+0xde/0x100
[   91.569030][ T5827]  print_circular_bug+0x2ee/0x310
[   91.569060][ T5827]  check_noncircular+0x134/0x160
[   91.569083][ T5827]  validate_chain+0xb9b/0x2140
[   91.569104][ T5827]  ? __mutex_unlock_slowpath+0x1cd/0x700
[   91.569126][ T5827]  ? __pfx___mutex_unlock_slowpath+0x10/0x10
[   91.569149][ T5827]  __lock_acquire+0xab9/0xd20
[   91.569168][ T5827]  ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0
[   91.569185][ T5827]  lock_acquire+0x120/0x360
[   91.569200][ T5827]  ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0
[   91.569218][ T5827]  ? is_bpf_text_address+0x26/0x2b0
[   91.569238][ T5827]  ? kernel_text_address+0xa5/0xe0
[   91.569254][ T5827]  down_write+0x96/0x1f0
[   91.569274][ T5827]  ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0
[   91.569291][ T5827]  ? __pfx_down_write+0x10/0x10
[   91.569317][ T5827]  ocfs2_reserve_local_alloc_bits+0x125/0x24e0
[   91.569338][ T5827]  ? check_noncircular+0xe0/0x160
[   91.569360][ T5827]  ? lockdep_unlock+0x89/0x120
[   91.569373][ T5827]  ? validate_chain+0x897/0x2140
[   91.569393][ T5827]  ? __pfx_ocfs2_reserve_local_alloc_bits+0x10/0x10
[   91.569409][ T5827]  ? get_tree_nodev+0xbb/0x150
[   91.569430][ T5827]  ? __lock_acquire+0xab9/0xd20
[   91.569454][ T5827]  ? do_raw_spin_unlock+0x122/0x240
[   91.569477][ T5827]  ? _raw_spin_unlock+0x28/0x50
[   91.569492][ T5827]  ? ocfs2_alloc_should_use_local+0x152/0x310
[   91.569507][ T5827]  ? ocfs2_reserve_clusters_with_limit+0x16b/0xba0
[   91.569529][ T5827]  ocfs2_reserve_clusters_with_limit+0x1be/0xba0
[   91.569552][ T5827]  ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10
[   91.569576][ T5827]  ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10
[   91.569594][ T5827]  ? __lock_acquire+0xab9/0xd20
[   91.569613][ T5827]  ocfs2_init_xattr_set_ctxt+0x376/0x700
[   91.569639][ T5827]  ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10
[   91.569664][ T5827]  ? ocfs2_xattr_set+0xb36/0x11f0
[   91.569687][ T5827]  ? up_write+0x1c4/0x420
[   91.569706][ T5827]  ? ocfs2_xattr_set+0x334/0x11f0
[   91.569729][ T5827]  ocfs2_xattr_set+0xb70/0x11f0
[   91.569759][ T5827]  ? __pfx_ocfs2_xattr_set+0x10/0x10
[   91.569781][ T5827]  ? check_path+0x21/0x40
[   91.569802][ T5827]  ? smack_log+0xef/0x3f0
[   91.569818][ T5827]  ? smk_access+0x14c/0x4e0
[   91.569834][ T5827]  ? smk_tskacc+0x2fc/0x370
[   91.569851][ T5827]  ? posix_xattr_acl+0x93/0xc0
[   91.569875][ T5827]  ? evm_protect_xattr+0x4d4/0xa90
[   91.569899][ T5827]  ? __pfx_evm_protect_xattr+0x10/0x10
[   91.569920][ T5827]  ? safesetid_security_capable+0xa9/0x1a0
[   91.569940][ T5827]  ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10
[   91.569964][ T5827]  __vfs_setxattr+0x43c/0x480
[   91.569985][ T5827]  __vfs_setxattr_noperm+0x12d/0x660
[   91.570005][ T5827]  vfs_setxattr+0x16b/0x2f0
[   91.570025][ T5827]  ? __pfx_vfs_setxattr+0x10/0x10
[   91.570045][ T5827]  ovl_init_uuid_xattr+0x53d/0x910
[   91.570074][ T5827]  ? __pfx_ovl_init_uuid_xattr+0x10/0x10
[   91.570095][ T5827]  ? do_raw_spin_unlock+0x122/0x240
[   91.570119][ T5827]  ovl_fill_super+0x2a69/0x35d0
[   91.570151][ T5827]  ? __pfx_ovl_fill_super+0x10/0x10
[   91.570176][ T5827]  ? __raw_spin_lock_init+0x45/0x100
[   91.570203][ T5827]  ? sget_fc+0x962/0xa40
[   91.570225][ T5827]  ? __pfx_set_anon_super_fc+0x10/0x10
[   91.570238][ T5827]  ? __pfx_ovl_fill_super+0x10/0x10
[   91.570258][ T5827]  get_tree_nodev+0xbb/0x150
[   91.570272][ T5827]  vfs_get_tree+0x8f/0x2b0
[   91.570289][ T5827]  do_new_mount+0x24a/0xa40
[   91.570310][ T5827]  __se_sys_mount+0x317/0x410
[   91.570330][ T5827]  ? __pfx___se_sys_mount+0x10/0x10
[   91.570350][ T5827]  ? __x64_sys_mount+0x20/0xc0
[   91.570368][ T5827]  do_syscall_64+0xfa/0x3b0
[   91.570387][ T5827]  ? lockdep_hardirqs_on+0x9c/0x150
[   91.570405][ T5827]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   91.570420][ T5827]  ? clear_bhb_loop+0x60/0xb0
[   91.570437][ T5827]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   91.570452][ T5827] RIP: 0033:0x7f652e238599
[   91.570475][ T5827] 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 b8 ff ff ff f7 d8 64 89 01 48
[   91.570492][ T5827] RSP: 002b:00007ffda7733de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   91.570508][ T5827] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f652e238599
[   91.570519][ T5827] RDX: 0000200000000200 RSI: 00002000000003c0 RDI: 0000000000000000
[   91.570529][ T5827] RBP: 0000000000000000 R08: 0000200000000400 R09: 00007ffda7733e20
[   91.570539][ T5827] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffda7733e20
[   91.570549][ T5827] R13: 00007ffda77340a8 R14: 431bde82d7b634db R15: 00007f652e28103b
[   91.570566][ T5827]  </TASK>
[   92.059417][ T5827] OCFS2: ERROR (device loop0): int ocfs2_validate_gd_self(struct super_block *, struct buffer_head *, int): Group descriptor #2304 has bad signature 
[   92.074915][ T5827] On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted.
[   92.085044][ T5827] OCFS2: File system is now read-only.
[   92.090534][ T5827] (syz-executor329,5827,0):ocfs2_search_chain:1852 ERROR: status = -30
[   92.098928][ T5827] (syz-executor329,5827,0):ocfs2_search_chain:1940 ERROR: status = -30
[   92.107307][ T5827] (syz-executor329,5827,0):ocfs2_claim_suballoc_bits:2010 ERROR: status = -30
[   92.116393][ T5827] (syz-executor329,5827,0):ocfs2_claim_suballoc_bits:2063 ERROR: status = -30
[   92.125335][ T5827] (syz-executor329,5827,0):__ocfs2_claim_clusters:2438 ERROR: status = -30
[   92.133964][ T5827] (syz-executor329,5827,0):__ocfs2_claim_clusters:2446 ERROR: status = -30
[   92.142829][ T5827] (syz-executor329,5827,0):ocfs2_local_alloc_new_window:1199 ERROR: status = -30
[pid  5827] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = 0
[pid  5827] exit_group(0)               = ?
[   92.152052][ T5827] (syz-executor329,5827,0):ocfs2_local_alloc_new_window:1224 ERROR: status = -30
[   92.161332][ T5827] (syz-executor329,5827,0):ocfs2_local_alloc_slide_window:1298 ERROR: status = -30
[   92.170744][ T5827] (syz-executor329,5827,0):ocfs2_local_alloc_slide_window:1317 ERROR: status = -30
[   92.180478][ T5827] (syz-executor329,5827,0):ocfs2_reserve_local_alloc_bits:672 ERROR: status = -30
[   92.189937][ T5827] (syz-executor329,5827,0):ocfs2_reserve_local_alloc_bits:710 ERROR: status = -30
[pid  5827] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5827, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=39 /* 0.39 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5830 attached
, child_tidptr=0x55558e59e750) = 5830
[pid  5830] set_robust_list(0x55558e59e760, 24) = 0
[pid  5830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5830] setpgid(0, 0)               = 0
[pid  5830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5830] write(3, "1000", 4)         = 4
[pid  5830] close(3)                    = 0
[pid  5830] write(1, "executing program\n", 18executing program
) = 18
[pid  5830] memfd_create("syzkaller", 0) = 3
[pid  5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[   92.199415][ T5827] (syz-executor329,5827,0):ocfs2_reserve_clusters_with_limit:1172 ERROR: status = -30
[   92.209072][ T5827] (syz-executor329,5827,0):ocfs2_reserve_clusters_with_limit:1221 ERROR: status = -30
[   92.218879][ T5827] (syz-executor329,5827,0):ocfs2_init_xattr_set_ctxt:3288 ERROR: status = -30
[   92.228057][ T5827] (syz-executor329,5827,0):ocfs2_xattr_set:3637 ERROR: status = -30
[   92.236168][ T5827] overlayfs: failed to set uuid (/file0, err=-30); falling back to uuid=null.
[pid  5830] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5830] munmap(0x7f6525c00000, 138412032) = 0
[pid  5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5830] close(3)                    = 0
[pid  5830] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid  5830] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5830] mkdir("./bus", 0777)        = 0
[pid  5830] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5830] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = 0
[pid  5830] exit_group(0)               = ?
[pid  5830] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5830, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5831 attached
, child_tidptr=0x55558e59e750) = 5831
[pid  5831] set_robust_list(0x55558e59e760, 24) = 0
[pid  5831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5831] setpgid(0, 0)               = 0
[pid  5831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5831] write(3, "1000", 4)         = 4
[pid  5831] close(3)                    = 0
executing program
[pid  5831] write(1, "executing program\n", 18) = 18
[pid  5831] memfd_create("syzkaller", 0) = 3
[pid  5831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5831] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5831] munmap(0x7f6525c00000, 138412032) = 0
[pid  5831] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5831] close(3)                    = 0
[pid  5831] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5831] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5831] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5831] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5831] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5831] exit_group(0)               = ?
[pid  5831] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5831, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=12 /* 0.12 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5832 attached
 <unfinished ...>
[pid  5832] set_robust_list(0x55558e59e760, 24 <unfinished ...>
[pid  5825] <... clone resumed>, child_tidptr=0x55558e59e750) = 5832
[pid  5832] <... set_robust_list resumed>) = 0
[pid  5832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5832] setpgid(0, 0)               = 0
[pid  5832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5832] write(3, "1000", 4)         = 4
[pid  5832] close(3)                    = 0
[pid  5832] write(1, "executing program\n", 18executing program
) = 18
[pid  5832] memfd_create("syzkaller", 0) = 3
[   92.770270][ T5831] overlay: filesystem on ./file0 not supported as upperdir
[pid  5832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5832] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5832] munmap(0x7f6525c00000, 138412032) = 0
[pid  5832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5832] close(3)                    = 0
[pid  5832] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5832] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5832] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5832] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5832] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5832] exit_group(0)               = ?
[pid  5832] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5832, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5833 attached
, child_tidptr=0x55558e59e750) = 5833
[pid  5833] set_robust_list(0x55558e59e760, 24) = 0
[pid  5833] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5833] setpgid(0, 0)               = 0
[pid  5833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5833] write(3, "1000", 4)         = 4
[pid  5833] close(3)                    = 0
[pid  5833] write(1, "executing program\n", 18executing program
) = 18
[pid  5833] memfd_create("syzkaller", 0) = 3
[pid  5833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[   93.098531][ T5832] overlay: filesystem on ./file0 not supported as upperdir
[pid  5833] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5833] munmap(0x7f6525c00000, 138412032) = 0
[pid  5833] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5833] close(3)                    = 0
[pid  5833] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5833] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5833] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5833] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5833] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5833] exit_group(0)               = ?
[pid  5833] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5833, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5834 attached
, child_tidptr=0x55558e59e750) = 5834
[pid  5834] set_robust_list(0x55558e59e760, 24) = 0
[pid  5834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5834] setpgid(0, 0)               = 0
[pid  5834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5834] write(3, "1000", 4)         = 4
[pid  5834] close(3)                    = 0
[   93.391903][ T5833] overlay: filesystem on ./file0 not supported as upperdir
executing program
[pid  5834] write(1, "executing program\n", 18) = 18
[pid  5834] memfd_create("syzkaller", 0) = 3
[pid  5834] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5834] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5834] munmap(0x7f6525c00000, 138412032) = 0
[pid  5834] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5834] close(3)                    = 0
[pid  5834] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5834] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5834] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5834] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5834] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5834] exit_group(0)               = ?
[pid  5834] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5834, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5835 attached
, child_tidptr=0x55558e59e750) = 5835
[pid  5835] set_robust_list(0x55558e59e760, 24) = 0
[pid  5835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5835] setpgid(0, 0)               = 0
[pid  5835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5835] write(3, "1000", 4)         = 4
[   93.721015][ T5834] overlay: filesystem on ./file0 not supported as upperdir
[pid  5835] close(3)                    = 0
executing program
[pid  5835] write(1, "executing program\n", 18) = 18
[pid  5835] memfd_create("syzkaller", 0) = 3
[pid  5835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5835] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5835] munmap(0x7f6525c00000, 138412032) = 0
[pid  5835] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5835] close(3)                    = 0
[pid  5835] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5835] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5835] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5835] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5835] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5835] exit_group(0)               = ?
[pid  5835] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5835, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=13 /* 0.13 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5837 attached
, child_tidptr=0x55558e59e750) = 5837
[pid  5837] set_robust_list(0x55558e59e760, 24) = 0
[pid  5837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5837] setpgid(0, 0)               = 0
[pid  5837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5837] write(3, "1000", 4)         = 4
[pid  5837] close(3)                    = 0
executing program
[pid  5837] write(1, "executing program\n", 18) = 18
[pid  5837] memfd_create("syzkaller", 0) = 3
[   94.080738][ T5835] overlay: filesystem on ./file0 not supported as upperdir
[pid  5837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5837] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5837] munmap(0x7f6525c00000, 138412032) = 0
[pid  5837] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5837] close(3)                    = 0
[pid  5837] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5837] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5837] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5837] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5837] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5837] exit_group(0)               = ?
[pid  5837] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5837, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=13 /* 0.13 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5839 attached
, child_tidptr=0x55558e59e750) = 5839
[pid  5839] set_robust_list(0x55558e59e760, 24) = 0
[pid  5839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5839] setpgid(0, 0)               = 0
[pid  5839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5839] write(3, "1000", 4)         = 4
[pid  5839] close(3)                    = 0
executing program
[pid  5839] write(1, "executing program\n", 18) = 18
[   94.421666][ T5837] overlay: filesystem on ./file0 not supported as upperdir
[pid  5839] memfd_create("syzkaller", 0) = 3
[pid  5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5839] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5839] munmap(0x7f6525c00000, 138412032) = 0
[pid  5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5839] close(3)                    = 0
[pid  5839] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5839] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5839] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5839] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5839] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5839] exit_group(0)               = ?
[pid  5839] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5839, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=13 /* 0.13 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5842 attached
, child_tidptr=0x55558e59e750) = 5842
[pid  5842] set_robust_list(0x55558e59e760, 24) = 0
[pid  5842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[   94.783734][ T5839] overlay: filesystem on ./file0 not supported as upperdir
[pid  5842] setpgid(0, 0)               = 0
[pid  5842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5842] write(3, "1000", 4)         = 4
[pid  5842] close(3)                    = 0
[pid  5842] write(1, "executing program\n", 18executing program
) = 18
[pid  5842] memfd_create("syzkaller", 0) = 3
[pid  5842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5842] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5842] munmap(0x7f6525c00000, 138412032) = 0
[pid  5842] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5842] close(3)                    = 0
[pid  5842] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5842] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5842] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5842] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5842] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5842] exit_group(0)               = ?
[pid  5842] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5842, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=11 /* 0.11 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5845 attached
, child_tidptr=0x55558e59e750) = 5845
[pid  5845] set_robust_list(0x55558e59e760, 24) = 0
[pid  5845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5845] setpgid(0, 0)               = 0
[pid  5845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5845] write(3, "1000", 4)         = 4
[pid  5845] close(3)                    = 0
executing program
[pid  5845] write(1, "executing program\n", 18) = 18
[   95.158982][ T5842] overlay: filesystem on ./file0 not supported as upperdir
[pid  5845] memfd_create("syzkaller", 0) = 3
[pid  5845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5845] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5845] munmap(0x7f6525c00000, 138412032) = 0
[pid  5845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5845] close(3)                    = 0
[pid  5845] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5845] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5845] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5845] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5845] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5845] exit_group(0)               = ?
[pid  5845] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5845, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5846 attached
, child_tidptr=0x55558e59e750) = 5846
[pid  5846] set_robust_list(0x55558e59e760, 24) = 0
[pid  5846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5846] setpgid(0, 0)               = 0
[pid  5846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5846] write(3, "1000", 4)         = 4
[pid  5846] close(3)                    = 0
[pid  5846] write(1, "executing program\n", 18executing program
) = 18
[pid  5846] memfd_create("syzkaller", 0) = 3
[pid  5846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[   95.491388][ T5845] overlay: filesystem on ./file0 not supported as upperdir
[pid  5846] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5846] munmap(0x7f6525c00000, 138412032) = 0
[pid  5846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5846] close(3)                    = 0
[pid  5846] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5846] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5846] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5846] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5846] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5846] exit_group(0)               = ?
[pid  5846] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5846, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5847 attached
, child_tidptr=0x55558e59e750) = 5847
[pid  5847] set_robust_list(0x55558e59e760, 24) = 0
[pid  5847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[   95.750350][ T5846] overlay: filesystem on ./file0 not supported as upperdir
[pid  5847] setpgid(0, 0)               = 0
[pid  5847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5847] write(3, "1000", 4)         = 4
[pid  5847] close(3)                    = 0
executing program
[pid  5847] write(1, "executing program\n", 18) = 18
[pid  5847] memfd_create("syzkaller", 0) = 3
[pid  5847] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5847] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5847] munmap(0x7f6525c00000, 138412032) = 0
[pid  5847] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5847] close(3)                    = 0
[pid  5847] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5847] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5847] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5847] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5847] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5847] exit_group(0)               = ?
[pid  5847] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5847, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=13 /* 0.13 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5848 attached
, child_tidptr=0x55558e59e750) = 5848
[pid  5848] set_robust_list(0x55558e59e760, 24) = 0
[pid  5848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5848] setpgid(0, 0)               = 0
[pid  5848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5848] write(3, "1000", 4)         = 4
[pid  5848] close(3)                    = 0
executing program
[pid  5848] write(1, "executing program\n", 18) = 18
[pid  5848] memfd_create("syzkaller", 0) = 3
[   96.119572][ T5847] overlay: filesystem on ./file0 not supported as upperdir
[pid  5848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5848] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5848] munmap(0x7f6525c00000, 138412032) = 0
[pid  5848] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5848] close(3)                    = 0
[pid  5848] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5848] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5848] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5848] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5848] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5848] exit_group(0)               = ?
[pid  5848] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5848, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5849 attached
, child_tidptr=0x55558e59e750) = 5849
[pid  5849] set_robust_list(0x55558e59e760, 24) = 0
[pid  5849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5849] setpgid(0, 0)               = 0
[pid  5849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5849] write(3, "1000", 4)         = 4
[pid  5849] close(3)                    = 0
executing program
[pid  5849] write(1, "executing program\n", 18) = 18
[pid  5849] memfd_create("syzkaller", 0) = 3
[pid  5849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[   96.446678][ T5848] overlay: filesystem on ./file0 not supported as upperdir
[pid  5849] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5849] munmap(0x7f6525c00000, 138412032) = 0
[pid  5849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5849] close(3)                    = 0
[pid  5849] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5849] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5849] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5849] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5849] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5849] exit_group(0)               = ?
[pid  5849] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5849, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5850 attached
, child_tidptr=0x55558e59e750) = 5850
[pid  5850] set_robust_list(0x55558e59e760, 24) = 0
[pid  5850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5850] setpgid(0, 0)               = 0
[pid  5850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[   96.739313][ T5849] overlay: filesystem on ./file0 not supported as upperdir
[pid  5850] write(3, "1000", 4)         = 4
[pid  5850] close(3)                    = 0
executing program
[pid  5850] write(1, "executing program\n", 18) = 18
[pid  5850] memfd_create("syzkaller", 0) = 3
[pid  5850] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5850] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5850] munmap(0x7f6525c00000, 138412032) = 0
[pid  5850] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5850] close(3)                    = 0
[pid  5850] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5850] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5850] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5850] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5850] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5850] exit_group(0)               = ?
[pid  5850] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5850, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5852 attached
, child_tidptr=0x55558e59e750) = 5852
[pid  5852] set_robust_list(0x55558e59e760, 24) = 0
[pid  5852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5852] setpgid(0, 0)               = 0
[pid  5852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5852] write(3, "1000", 4)         = 4
[pid  5852] close(3)                    = 0
[pid  5852] write(1, "executing program\n", 18executing program
[   97.071187][ T5850] overlay: filesystem on ./file0 not supported as upperdir
[   97.084979][    T9] cfg80211: failed to load regulatory.db
) = 18
[pid  5852] memfd_create("syzkaller", 0) = 3
[pid  5852] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5852] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5852] munmap(0x7f6525c00000, 138412032) = 0
[pid  5852] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5852] close(3)                    = 0
[pid  5852] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5852] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5852] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5852] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5852] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5852] exit_group(0)               = ?
[pid  5852] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5852, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=11 /* 0.11 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5853 attached
 <unfinished ...>
[pid  5853] set_robust_list(0x55558e59e760, 24 <unfinished ...>
[pid  5825] <... clone resumed>, child_tidptr=0x55558e59e750) = 5853
[pid  5853] <... set_robust_list resumed>) = 0
[pid  5853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5853] setpgid(0, 0)               = 0
[pid  5853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5853] write(3, "1000", 4)         = 4
[pid  5853] close(3)                    = 0
executing program
[pid  5853] write(1, "executing program\n", 18) = 18
[pid  5853] memfd_create("syzkaller", 0) = 3
[pid  5853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[   97.426085][ T5852] overlay: filesystem on ./file0 not supported as upperdir
[pid  5853] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5853] munmap(0x7f6525c00000, 138412032) = 0
[pid  5853] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5853] close(3)                    = 0
[pid  5853] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5853] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5853] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5853] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5853] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5853] exit_group(0)               = ?
[pid  5853] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5853, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5854 attached
, child_tidptr=0x55558e59e750) = 5854
[pid  5854] set_robust_list(0x55558e59e760, 24) = 0
[pid  5854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[   97.748931][ T5853] overlay: filesystem on ./file0 not supported as upperdir
[pid  5854] setpgid(0, 0)               = 0
[pid  5854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5854] write(3, "1000", 4)         = 4
[pid  5854] close(3)                    = 0
executing program
[pid  5854] write(1, "executing program\n", 18) = 18
[pid  5854] memfd_create("syzkaller", 0) = 3
[pid  5854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5854] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5854] munmap(0x7f6525c00000, 138412032) = 0
[pid  5854] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5854] close(3)                    = 0
[pid  5854] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5854] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5854] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5854] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5854] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5854] exit_group(0)               = ?
[pid  5854] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5854, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5855 attached
, child_tidptr=0x55558e59e750) = 5855
[pid  5855] set_robust_list(0x55558e59e760, 24) = 0
[pid  5855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5855] setpgid(0, 0)               = 0
[pid  5855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5855] write(3, "1000", 4)         = 4
[pid  5855] close(3)                    = 0
executing program
[pid  5855] write(1, "executing program\n", 18) = 18
[pid  5855] memfd_create("syzkaller", 0) = 3
[pid  5855] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[   98.134182][ T5854] overlay: filesystem on ./file0 not supported as upperdir
[pid  5855] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5855] munmap(0x7f6525c00000, 138412032) = 0
[pid  5855] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5855] close(3)                    = 0
[pid  5855] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5855] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5855] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5855] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5855] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5855] exit_group(0)               = ?
[pid  5855] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5855, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=13 /* 0.13 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558e59e750) = 5856
./strace-static-x86_64: Process 5856 attached
[pid  5856] set_robust_list(0x55558e59e760, 24) = 0
[pid  5856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5856] setpgid(0, 0)               = 0
[   98.439234][ T5855] overlay: filesystem on ./file0 not supported as upperdir
[pid  5856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5856] write(3, "1000", 4)         = 4
[pid  5856] close(3)                    = 0
executing program
[pid  5856] write(1, "executing program\n", 18) = 18
[pid  5856] memfd_create("syzkaller", 0) = 3
[pid  5856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5856] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5856] munmap(0x7f6525c00000, 138412032) = 0
[pid  5856] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5856] close(3)                    = 0
[pid  5856] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5856] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5856] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5856] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5856] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5856] exit_group(0)               = ?
[pid  5856] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5856, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=15 /* 0.15 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5857 attached
, child_tidptr=0x55558e59e750) = 5857
[pid  5857] set_robust_list(0x55558e59e760, 24) = 0
[pid  5857] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5857] setpgid(0, 0)               = 0
[pid  5857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[   98.804535][ T5856] overlay: filesystem on ./file0 not supported as upperdir
[pid  5857] write(3, "1000", 4)         = 4
[pid  5857] close(3)                    = 0
[pid  5857] write(1, "executing program\n", 18executing program
) = 18
[pid  5857] memfd_create("syzkaller", 0) = 3
[pid  5857] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5857] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5857] munmap(0x7f6525c00000, 138412032) = 0
[pid  5857] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5857] close(3)                    = 0
[pid  5857] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5857] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5857] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5857] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5857] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5857] exit_group(0)               = ?
[pid  5857] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5857, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5858 attached
, child_tidptr=0x55558e59e750) = 5858
[pid  5858] set_robust_list(0x55558e59e760, 24) = 0
[pid  5858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5858] setpgid(0, 0)               = 0
[   99.159348][ T5857] overlay: filesystem on ./file0 not supported as upperdir
[pid  5858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5858] write(3, "1000", 4)         = 4
[pid  5858] close(3)                    = 0
[pid  5858] write(1, "executing program\n", 18executing program
) = 18
[pid  5858] memfd_create("syzkaller", 0) = 3
[pid  5858] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5858] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5858] munmap(0x7f6525c00000, 138412032) = 0
[pid  5858] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5858] close(3)                    = 0
[pid  5858] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5858] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5858] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5858] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5858] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5858] exit_group(0)               = ?
[pid  5858] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5858, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=13 /* 0.13 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5859 attached
, child_tidptr=0x55558e59e750) = 5859
[pid  5859] set_robust_list(0x55558e59e760, 24) = 0
[pid  5859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5859] setpgid(0, 0)               = 0
[   99.506971][ T5858] overlay: filesystem on ./file0 not supported as upperdir
[pid  5859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5859] write(3, "1000", 4)         = 4
[pid  5859] close(3)                    = 0
executing program
[pid  5859] write(1, "executing program\n", 18) = 18
[pid  5859] memfd_create("syzkaller", 0) = 3
[pid  5859] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5859] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5859] munmap(0x7f6525c00000, 138412032) = 0
[pid  5859] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5859] close(3)                    = 0
[pid  5859] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5859] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5859] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5859] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5859] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5859] exit_group(0)               = ?
[pid  5859] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5859, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5860 attached
, child_tidptr=0x55558e59e750) = 5860
[pid  5860] set_robust_list(0x55558e59e760, 24) = 0
[pid  5860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5860] setpgid(0, 0)               = 0
[pid  5860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5860] write(3, "1000", 4)         = 4
[pid  5860] close(3)                    = 0
executing program
[pid  5860] write(1, "executing program\n", 18) = 18
[pid  5860] memfd_create("syzkaller", 0) = 3
[pid  5860] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[   99.870237][ T5859] overlay: filesystem on ./file0 not supported as upperdir
[pid  5860] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5860] munmap(0x7f6525c00000, 138412032) = 0
[pid  5860] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5860] close(3)                    = 0
[pid  5860] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5860] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5860] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5860] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5860] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5860] exit_group(0)               = ?
[pid  5860] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5860, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5861 attached
, child_tidptr=0x55558e59e750) = 5861
[pid  5861] set_robust_list(0x55558e59e760, 24) = 0
[pid  5861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5861] setpgid(0, 0)               = 0
[pid  5861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5861] write(3, "1000", 4)         = 4
[pid  5861] close(3)                    = 0
executing program
[pid  5861] write(1, "executing program\n", 18) = 18
[  100.197944][ T5860] overlay: filesystem on ./file0 not supported as upperdir
[pid  5861] memfd_create("syzkaller", 0) = 3
[pid  5861] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5861] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5861] munmap(0x7f6525c00000, 138412032) = 0
[pid  5861] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5861] close(3)                    = 0
[pid  5861] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5861] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5861] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5861] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5861] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5861] exit_group(0)               = ?
[pid  5861] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5861, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=12 /* 0.12 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5863 attached
, child_tidptr=0x55558e59e750) = 5863
[pid  5863] set_robust_list(0x55558e59e760, 24) = 0
[pid  5863] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5863] setpgid(0, 0)               = 0
[pid  5863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5863] write(3, "1000", 4)         = 4
[pid  5863] close(3)                    = 0
executing program
[pid  5863] write(1, "executing program\n", 18) = 18
[pid  5863] memfd_create("syzkaller", 0) = 3
[  100.532569][ T5861] overlay: filesystem on ./file0 not supported as upperdir
[pid  5863] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000
[pid  5863] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid  5863] munmap(0x7f6525c00000, 138412032) = 0
[pid  5863] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5863] close(3)                    = 0
[pid  5863] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid  5863] open(NULL, O_RDONLY)        = -1 EFAULT (Bad address)
[pid  5863] mkdir("./bus", 0777)        = -1 EEXIST (File exists)
[pid  5863] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5863] mount(NULL, "./file0", "overlay", 0, "upperdir=./file0,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument)
[pid  5863] exit_group(0)               = ?
[pid  5863] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5863, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5864 attached
, child_tidptr=0x55558e59e750) = 5864
[  100.857669][ T5863] overlay: filesystem on ./file0 not supported as upperdir
[pid  5864] set_robust_list(0x55558e59e760, 24) = 0
[pid  5864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5864] setpgid(0, 0)               = 0
[pid  5864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5864] write(3, "1000", 4)         = 4
[pid  5864] close(3)                    = 0
executing program
[pid  5864] write(1, "executing program\n", 18) = 18
[pid  5864] memfd_create("syzkaller", 0) = 3
[pid  5864] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6525c00000