./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor460237784

<...>
Warning: Permanently added '10.128.1.146' (ED25519) to the list of known hosts.
execve("./syz-executor460237784", ["./syz-executor460237784"], 0x7fffe8742130 /* 10 vars */) = 0
brk(NULL)                               = 0x55557af2d000
brk(0x55557af2de00)                     = 0x55557af2de00
arch_prctl(ARCH_SET_FS, 0x55557af2d480) = 0
set_tid_address(0x55557af2d750)         = 5835
set_robust_list(0x55557af2d760, 24)     = 0
rseq(0x55557af2dda0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor460237784", 4096) = 27
getrandom("\x2b\x5d\x00\x1e\xce\x6d\x5d\x94", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55557af2de00
brk(0x55557af4ee00)                     = 0x55557af4ee00
brk(0x55557af4f000)                     = 0x55557af4f000
mprotect(0x7f63603bb000, 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=0x7f636030da60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f63603164a0}, NULL, 8) = 0
rt_sigaction(SIGBUS, {sa_handler=0x7f636030da60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f63603164a0}, 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 5836 attached
 <unfinished ...>
[pid  5836] set_robust_list(0x55557af2d760, 24) = 0
[pid  5836] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5835] <... clone resumed>, child_tidptr=0x55557af2d750) = 5836
[pid  5836] <... prctl resumed>)        = 0
[pid  5836] setpgid(0, 0)               = 0
[pid  5836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5836] write(3, "1000", 4)         = 4
[pid  5836] close(3)                    = 0
[pid  5836] write(1, "executing program\n", 18executing program
) = 18
[pid  5836] memfd_create("syzkaller", 0) = 3
[pid  5836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[pid  5836] 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  5836] munmap(0x7f6357e00000, 138412032) = 0
[pid  5836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5836] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5836] close(3)                    = 0
[pid  5836] close(4)                    = 0
[pid  5836] mkdir("./file1", 0777)      = 0
[   86.541847][ T5836] loop0: detected capacity change from 0 to 32768
[   86.559984][ T5836] =======================================================
[   86.559984][ T5836] WARNING: The mand mount option has been deprecated and
[   86.559984][ T5836]          and is ignored by this kernel. Remove the mand
[   86.559984][ T5836]          option from the mount to silence this warning.
[pid  5836] mount("/dev/loop0", "./file1", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "acl,heartbeat=none,nouser_xattr,coherency=full,data=writeback,localalloc=00000000000000000001,acl,no"...) = 0
[pid  5836] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3
[pid  5836] chdir("./file1")            = 0
[pid  5836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5836] mkdir("./file0", 0777)      = 0
[pid  5836] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5836] mkdir("./file1", 0777)      = 0
[pid  5836] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[   86.559984][ T5836] =======================================================
[   86.610854][ T5836] ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode.
[   86.666385][ T5836] overlayfs: upper fs does not support tmpfile.
[   86.675052][ T5836] overlayfs: upper fs does not support RENAME_WHITEOUT.
[   86.682700][ T5836] 
[   86.685052][ T5836] ======================================================
[   86.692054][ T5836] WARNING: possible circular locking dependency detected
[   86.699069][ T5836] 6.15.0-rc2-syzkaller-00471-g119009db2674 #0 Not tainted
[   86.706161][ T5836] ------------------------------------------------------
[   86.713171][ T5836] syz-executor460/5836 is trying to acquire lock:
[   86.719575][ T5836] ffff888075d1d100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x18d/0x4f30
[   86.732839][ T5836] 
[   86.732839][ T5836] but task is already holding lock:
[   86.740197][ T5836] ffff888075d25c78 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x635/0x1940
[   86.749688][ T5836] 
[   86.749688][ T5836] which lock already depends on the new lock.
[   86.749688][ T5836] 
[   86.760093][ T5836] 
[   86.760093][ T5836] the existing dependency chain (in reverse order) is:
[   86.769099][ T5836] 
[   86.769099][ T5836] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}:
[   86.776928][ T5836]        lock_acquire+0x116/0x2f0
[   86.781965][ T5836]        down_write+0x9c/0x220
[   86.786737][ T5836]        ocfs2_xattr_set_handle+0x53b/0xa20
[   86.792636][ T5836]        ocfs2_init_security_set+0xbd/0xd0
[   86.798450][ T5836]        ocfs2_mknod+0x1cd3/0x2b30
[   86.803563][ T5836]        ocfs2_mkdir+0x19c/0x470
[   86.808496][ T5836]        vfs_mkdir+0x2f9/0x500
[   86.813252][ T5836]        do_mkdirat+0x273/0x3f0
[   86.818095][ T5836]        __x64_sys_mkdir+0x6c/0x80
[   86.823196][ T5836]        do_syscall_64+0xf3/0x210
[   86.828215][ T5836]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   86.834623][ T5836] 
[   86.834623][ T5836] -> #3 (jbd2_handle){.+.+}-{0:0}:
[   86.841947][ T5836]        lock_acquire+0x116/0x2f0
[   86.846970][ T5836]        start_this_handle+0x1ee4/0x21a0
[   86.852603][ T5836]        jbd2__journal_start+0x2da/0x5d0
[   86.858238][ T5836]        jbd2_journal_start+0x29/0x40
[   86.863605][ T5836]        ocfs2_start_trans+0x3cd/0x710
[   86.869058][ T5836]        ocfs2_reserve_suballoc_bits+0xa54/0x4f30
[   86.875465][ T5836]        ocfs2_reserve_new_metadata_blocks+0x41c/0x9b0
[   86.882313][ T5836]        ocfs2_mknod+0x143e/0x2b30
[   86.887422][ T5836]        ocfs2_mkdir+0x19c/0x470
[   86.892353][ T5836]        vfs_mkdir+0x2f9/0x500
[   86.897196][ T5836]        do_mkdirat+0x273/0x3f0
[   86.902037][ T5836]        __x64_sys_mkdir+0x6c/0x80
[   86.907143][ T5836]        do_syscall_64+0xf3/0x210
[   86.912166][ T5836]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   86.918577][ T5836] 
[   86.918577][ T5836] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
[   86.927110][ T5836]        lock_acquire+0x116/0x2f0
[   86.932148][ T5836]        down_read+0xb3/0xa50
[   86.936820][ T5836]        ocfs2_start_trans+0x3c2/0x710
[   86.942278][ T5836]        ocfs2_reserve_suballoc_bits+0xa54/0x4f30
[   86.948690][ T5836]        ocfs2_reserve_new_metadata_blocks+0x41c/0x9b0
[   86.955534][ T5836]        ocfs2_mknod+0x143e/0x2b30
[   86.960667][ T5836]        ocfs2_mkdir+0x19c/0x470
[   86.965602][ T5836]        vfs_mkdir+0x2f9/0x500
[   86.970359][ T5836]        do_mkdirat+0x273/0x3f0
[   86.975202][ T5836]        __x64_sys_mkdir+0x6c/0x80
[   86.980304][ T5836]        do_syscall_64+0xf3/0x210
[   86.985324][ T5836]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   86.991728][ T5836] 
[   86.991728][ T5836] -> #1 (sb_internal#2){.+.+}-{0:0}:
[   86.999219][ T5836]        lock_acquire+0x116/0x2f0
[   87.004241][ T5836]        ocfs2_start_trans+0x2bd/0x710
[   87.009695][ T5836]        ocfs2_reserve_suballoc_bits+0xa54/0x4f30
[   87.016103][ T5836]        ocfs2_reserve_new_metadata_blocks+0x41c/0x9b0
[   87.022947][ T5836]        ocfs2_mknod+0x143e/0x2b30
[   87.028052][ T5836]        ocfs2_mkdir+0x19c/0x470
[   87.032981][ T5836]        vfs_mkdir+0x2f9/0x500
[   87.037744][ T5836]        do_mkdirat+0x273/0x3f0
[   87.042591][ T5836]        __x64_sys_mkdir+0x6c/0x80
[   87.047699][ T5836]        do_syscall_64+0xf3/0x210
[   87.052718][ T5836]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   87.059127][ T5836] 
[   87.059127][ T5836] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}:
[   87.069652][ T5836]        validate_chain+0xa69/0x24e0
[   87.074962][ T5836]        __lock_acquire+0xad5/0xd80
[   87.080175][ T5836]        lock_acquire+0x116/0x2f0
[   87.085201][ T5836]        down_write+0x9c/0x220
[   87.089967][ T5836]        ocfs2_reserve_suballoc_bits+0x18d/0x4f30
[   87.096381][ T5836]        ocfs2_reserve_clusters_with_limit+0x3df/0xb60
[   87.103229][ T5836]        ocfs2_init_xattr_set_ctxt+0x435/0x900
[   87.109382][ T5836]        ocfs2_xattr_set+0xf52/0x1940
[   87.114752][ T5836]        __vfs_setxattr+0x468/0x4a0
[   87.119948][ T5836]        __vfs_setxattr_noperm+0x12e/0x660
[   87.125750][ T5836]        vfs_setxattr+0x223/0x430
[   87.130770][ T5836]        ovl_get_workdir+0xea3/0x19e0
[   87.136141][ T5836]        ovl_fill_super+0x1508/0x39f0
[   87.141510][ T5836]        get_tree_nodev+0xb7/0x140
[   87.146636][ T5836]        vfs_get_tree+0x90/0x2b0
[   87.151593][ T5836]        do_new_mount+0x2cf/0xb70
[   87.156615][ T5836]        __se_sys_mount+0x38c/0x400
[   87.162158][ T5836]        do_syscall_64+0xf3/0x210
[   87.167184][ T5836]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   87.173593][ T5836] 
[   87.173593][ T5836] other info that might help us debug this:
[   87.173593][ T5836] 
[   87.183823][ T5836] Chain exists of:
[   87.183823][ T5836]   &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4 --> jbd2_handle --> &oi->ip_xattr_sem
[   87.183823][ T5836] 
[   87.199677][ T5836]  Possible unsafe locking scenario:
[   87.199677][ T5836] 
[   87.207124][ T5836]        CPU0                    CPU1
[   87.212483][ T5836]        ----                    ----
[   87.217852][ T5836]   lock(&oi->ip_xattr_sem);
[   87.222458][ T5836]                                lock(jbd2_handle);
[   87.229060][ T5836]                                lock(&oi->ip_xattr_sem);
[   87.236186][ T5836]   lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4);
[   87.243492][ T5836] 
[   87.243492][ T5836]  *** DEADLOCK ***
[   87.243492][ T5836] 
[   87.251640][ T5836] 4 locks held by syz-executor460/5836:
[   87.257181][ T5836]  #0: ffff88807a2ae0e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0
[   87.267324][ T5836]  #1: ffff888035c30420 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90
[   87.276494][ T5836]  #2: ffff888075d25f40 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x1e3/0x430
[   87.286966][ T5836]  #3: ffff888075d25c78 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x635/0x1940
[   87.296904][ T5836] 
[   87.296904][ T5836] stack backtrace:
[   87.302899][ T5836] CPU: 0 UID: 0 PID: 5836 Comm: syz-executor460 Not tainted 6.15.0-rc2-syzkaller-00471-g119009db2674 #0 PREEMPT(full) 
[   87.302921][ T5836] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[   87.302937][ T5836] Call Trace:
[   87.302946][ T5836]  <TASK>
[   87.302954][ T5836]  dump_stack_lvl+0x241/0x360
[   87.302979][ T5836]  ? __pfx_dump_stack_lvl+0x10/0x10
[   87.303001][ T5836]  ? __pfx__printk+0x10/0x10
[   87.303021][ T5836]  ? print_lock+0x171/0x1a0
[   87.303047][ T5836]  print_circular_bug+0x2e1/0x300
[   87.303064][ T5836]  check_noncircular+0x142/0x160
[   87.303092][ T5836]  validate_chain+0xa69/0x24e0
[   87.303119][ T5836]  ? do_raw_spin_lock+0x151/0x370
[   87.303142][ T5836]  __lock_acquire+0xad5/0xd80
[   87.303165][ T5836]  lock_acquire+0x116/0x2f0
[   87.303185][ T5836]  ? ocfs2_reserve_suballoc_bits+0x18d/0x4f30
[   87.303208][ T5836]  down_write+0x9c/0x220
[   87.303227][ T5836]  ? ocfs2_reserve_suballoc_bits+0x18d/0x4f30
[   87.303245][ T5836]  ? __pfx_down_write+0x10/0x10
[   87.303262][ T5836]  ? rcu_is_watching+0x15/0xb0
[   87.303276][ T5836]  ? lock_release+0x4e/0x3e0
[   87.303295][ T5836]  ? lock_release+0x4e/0x3e0
[   87.303317][ T5836]  ocfs2_reserve_suballoc_bits+0x18d/0x4f30
[   87.303335][ T5836]  ? is_bpf_text_address+0x288/0x2a0
[   87.303357][ T5836]  ? is_bpf_text_address+0x26/0x2a0
[   87.303378][ T5836]  ? __pfx_stack_trace_consume_entry+0x10/0x10
[   87.303396][ T5836]  ? kernel_text_address+0xa7/0xe0
[   87.303416][ T5836]  ? __kernel_text_address+0xd/0x40
[   87.303436][ T5836]  ? arch_stack_walk+0xff/0x150
[   87.303459][ T5836]  ? stack_trace_save+0x11a/0x1d0
[   87.303475][ T5836]  ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[   87.303500][ T5836]  ? __pfx_ocfs2_reserve_suballoc_bits+0x10/0x10
[   87.303517][ T5836]  ? __bfs+0x14a/0x270
[   87.303541][ T5836]  ? check_path+0x21/0x40
[   87.303553][ T5836]  ? check_noncircular+0xee/0x160
[   87.303579][ T5836]  ? lockdep_unlock+0x8d/0x120
[   87.303598][ T5836]  ? validate_chain+0x8a7/0x24e0
[   87.303624][ T5836]  ? __vfs_setxattr+0x468/0x4a0
[   87.303641][ T5836]  ? vfs_setxattr+0x223/0x430
[   87.303657][ T5836]  ? vfs_get_tree+0x90/0x2b0
[   87.303672][ T5836]  ? do_new_mount+0x2cf/0xb70
[   87.303696][ T5836]  ? __lock_acquire+0xad5/0xd80
[   87.303717][ T5836]  ? do_raw_spin_lock+0x151/0x370
[   87.303736][ T5836]  ? do_raw_spin_unlock+0x13c/0x8b0
[   87.303755][ T5836]  ? _raw_spin_unlock+0x28/0x50
[   87.303777][ T5836]  ? ocfs2_alloc_should_use_local+0x155/0x320
[   87.303804][ T5836]  ocfs2_reserve_clusters_with_limit+0x3df/0xb60
[   87.303826][ T5836]  ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10
[   87.303862][ T5836]  ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10
[   87.303895][ T5836]  ? __lock_acquire+0xad5/0xd80
[   87.303917][ T5836]  ocfs2_init_xattr_set_ctxt+0x435/0x900
[   87.303940][ T5836]  ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10
[   87.303962][ T5836]  ? up_write+0x1ab/0x590
[   87.303976][ T5836]  ? __pfx_ocfs2_truncate_log_needs_flush+0x10/0x10
[   87.303997][ T5836]  ? __pfx_up_write+0x10/0x10
[   87.304012][ T5836]  ? __kmalloc_cache_noprof+0x236/0x370
[   87.304032][ T5836]  ? ocfs2_xattr_set+0x4d7/0x1940
[   87.304053][ T5836]  ocfs2_xattr_set+0xf52/0x1940
[   87.304080][ T5836]  ? __pfx_ocfs2_xattr_set+0x10/0x10
[   87.304099][ T5836]  ? trace_sched_exit_tp+0x3c/0x120
[   87.304118][ T5836]  ? __schedule+0x1b51/0x51f0
[   87.304144][ T5836]  ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[   87.304182][ T5836]  ? smk_tskacc+0x300/0x370
[   87.304200][ T5836]  ? posix_xattr_acl+0xa9/0xd0
[   87.304224][ T5836]  ? evm_protect_xattr+0x4c0/0xb50
[   87.304247][ T5836]  ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10
[   87.304270][ T5836]  __vfs_setxattr+0x468/0x4a0
[   87.304291][ T5836]  __vfs_setxattr_noperm+0x12e/0x660
[   87.304312][ T5836]  vfs_setxattr+0x223/0x430
[   87.304332][ T5836]  ? __pfx_vfs_setxattr+0x10/0x10
[   87.304350][ T5836]  ? dput+0x37/0x2b0
[   87.304368][ T5836]  ? dput+0x37/0x2b0
[   87.304385][ T5836]  ovl_get_workdir+0xea3/0x19e0
[   87.304414][ T5836]  ? __pfx_ovl_get_workdir+0x10/0x10
[   87.304441][ T5836]  ? do_raw_spin_lock+0x151/0x370
[   87.304463][ T5836]  ? _raw_spin_unlock+0x28/0x50
[   87.304484][ T5836]  ? ovl_inuse_trylock+0xab/0xf0
[   87.304507][ T5836]  ovl_fill_super+0x1508/0x39f0
[   87.304538][ T5836]  ? shrinker_register+0x118/0x230
[   87.304558][ T5836]  ? __pfx_ovl_fill_super+0x10/0x10
[   87.304586][ T5836]  ? __raw_spin_lock_init+0x45/0x100
[   87.304608][ T5836]  ? sget_fc+0x960/0xa50
[   87.304631][ T5836]  ? __pfx_set_anon_super_fc+0x10/0x10
[   87.304645][ T5836]  ? __pfx_ovl_fill_super+0x10/0x10
[   87.304668][ T5836]  get_tree_nodev+0xb7/0x140
[   87.304683][ T5836]  vfs_get_tree+0x90/0x2b0
[   87.304699][ T5836]  do_new_mount+0x2cf/0xb70
[   87.304718][ T5836]  ? __pfx_do_new_mount+0x10/0x10
[   87.304738][ T5836]  __se_sys_mount+0x38c/0x400
[   87.304758][ T5836]  ? __pfx___se_sys_mount+0x10/0x10
[   87.304778][ T5836]  ? __x64_sys_mount+0x20/0xc0
[   87.304796][ T5836]  do_syscall_64+0xf3/0x210
[   87.304812][ T5836]  ? clear_bhb_loop+0x45/0xa0
[   87.304829][ T5836]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   87.304845][ T5836] RIP: 0033:0x7f6360343559
[   87.304863][ T5836] 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
[   87.304880][ T5836] RSP: 002b:00007ffeb71997c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   87.304897][ T5836] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6360343559
[   87.304908][ T5836] RDX: 0000200000000040 RSI: 0000200000000000 RDI: 0000000000000000
[   87.304918][ T5836] RBP: 0000000000000000 R08: 00002000000002c0 R09: 00007ffeb7199800
[   87.304928][ T5836] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeb7199800
[   87.304938][ T5836] R13: 00007ffeb7199a88 R14: 431bde82d7b634db R15: 00007f636038c03b
[   87.304956][ T5836]  </TASK>
[pid  5836] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid  5836] exit_group(0)               = ?
[pid  5836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5836, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=24 /* 0.24 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 5840 attached
[   87.874940][ T5836] overlayfs: upper fs missing required features.
 <unfinished ...>
[pid  5840] set_robust_list(0x55557af2d760, 24 <unfinished ...>
[pid  5835] <... clone resumed>, child_tidptr=0x55557af2d750) = 5840
[pid  5840] <... set_robust_list resumed>) = 0
[pid  5840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5840] setpgid(0, 0)               = 0
[pid  5840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5840] write(3, "1000", 4)         = 4
[pid  5840] close(3)                    = 0
executing program
[pid  5840] write(1, "executing program\n", 18) = 18
[pid  5840] memfd_create("syzkaller", 0) = 3
[pid  5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[pid  5840] 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  5840] munmap(0x7f6357e00000, 138412032) = 0
[pid  5840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5840] close(3)                    = 0
[pid  5840] mkdir("./file0", 0777)      = 0
[pid  5840] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5840] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[pid  5840] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5840] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid  5840] exit_group(0)               = ?
[pid  5840] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5840, 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 5841 attached
 <unfinished ...>
[pid  5841] set_robust_list(0x55557af2d760, 24 <unfinished ...>
[pid  5835] <... clone resumed>, child_tidptr=0x55557af2d750) = 5841
[pid  5841] <... set_robust_list resumed>) = 0
[pid  5841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5841] setpgid(0, 0)               = 0
[pid  5841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5841] write(3, "1000", 4)         = 4
[pid  5841] close(3)                    = 0
executing program
[pid  5841] write(1, "executing program\n", 18) = 18
[   88.164963][ T5840] overlayfs: workdir and upperdir must reside under the same mount
[pid  5841] memfd_create("syzkaller", 0) = 3
[pid  5841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[pid  5841] 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  5841] munmap(0x7f6357e00000, 138412032) = 0
[pid  5841] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5841] close(3)                    = 0
[pid  5841] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5841] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5841] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[pid  5841] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5841] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid  5841] exit_group(0)               = ?
[pid  5841] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5841, 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 5842 attached
, child_tidptr=0x55557af2d750) = 5842
[pid  5842] set_robust_list(0x55557af2d760, 24) = 0
[pid  5842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5842] setpgid(0, 0)               = 0
[   88.432669][ T5841] overlayfs: workdir and upperdir must reside under the same mount
[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
executing program
[pid  5842] write(1, "executing program\n", 18) = 18
[pid  5842] memfd_create("syzkaller", 0) = 3
[pid  5842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5842] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5842] close(3)                    = 0
[pid  5842] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5842] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5842] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=3 /* 0.03 s */, si_stime=12 /* 0.12 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
[   88.716913][ T5842] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5843 attached
, child_tidptr=0x55557af2d750) = 5843
[pid  5843] set_robust_list(0x55557af2d760, 24) = 0
[pid  5843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5843] setpgid(0, 0)               = 0
[pid  5843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5843] write(3, "1000", 4)         = 4
[pid  5843] close(3)                    = 0
executing program
[pid  5843] write(1, "executing program\n", 18) = 18
[pid  5843] memfd_create("syzkaller", 0) = 3
[pid  5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[pid  5843] 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  5843] munmap(0x7f6357e00000, 138412032) = 0
[pid  5843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5843] close(3)                    = 0
[pid  5843] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5843] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5843] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[pid  5843] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5843] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid  5843] exit_group(0)               = ?
[pid  5843] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5843, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=11 /* 0.11 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 5844 attached
, child_tidptr=0x55557af2d750) = 5844
[   89.051616][ T5843] overlayfs: workdir and upperdir must reside under the same mount
[pid  5844] set_robust_list(0x55557af2d760, 24) = 0
[pid  5844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5844] setpgid(0, 0)               = 0
[pid  5844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5844] write(3, "1000", 4)         = 4
[pid  5844] close(3)                    = 0
executing program
[pid  5844] write(1, "executing program\n", 18) = 18
[pid  5844] memfd_create("syzkaller", 0) = 3
[pid  5844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[pid  5844] 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  5844] munmap(0x7f6357e00000, 138412032) = 0
[pid  5844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5844] close(3)                    = 0
[pid  5844] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5844] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5844] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[pid  5844] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5844] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid  5844] exit_group(0)               = ?
[pid  5844] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5844, si_uid=0, si_status=0, si_utime=2 /* 0.02 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 5845 attached
, child_tidptr=0x55557af2d750) = 5845
[pid  5845] set_robust_list(0x55557af2d760, 24) = 0
[   89.382776][ T5844] overlayfs: workdir and upperdir must reside under the same mount
[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
[pid  5845] memfd_create("syzkaller", 0) = 3
[pid  5845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5845] close(3)                    = 0
[pid  5845] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5845] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5845] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=2 /* 0.02 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=0x55557af2d750) = 5846
[pid  5846] set_robust_list(0x55557af2d760, 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) = 0x7f6357e00000
[   89.699517][ T5845] overlayfs: workdir and upperdir must reside under the same mount
[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(0x7f6357e00000, 138412032) = 0
[pid  5846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5846] close(3)                    = 0
[pid  5846] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5846] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5846] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
[   89.958916][ T5846] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5847 attached
, child_tidptr=0x55557af2d750) = 5847
[pid  5847] set_robust_list(0x55557af2d760, 24) = 0
[pid  5847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[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) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5847] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5847] close(3)                    = 0
[pid  5847] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5847] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5847] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=4 /* 0.04 s */, si_stime=10 /* 0.10 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 5848 attached
, child_tidptr=0x55557af2d750) = 5848
[pid  5848] set_robust_list(0x55557af2d760, 24) = 0
[pid  5848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[   90.307638][ T5847] overlayfs: workdir and upperdir must reside under the same mount
[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
[pid  5848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5848] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5848] close(3)                    = 0
[pid  5848] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5848] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5848] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=5 /* 0.05 s */, si_stime=11 /* 0.11 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 5849 attached
, child_tidptr=0x55557af2d750) = 5849
[   90.619531][ T5848] overlayfs: workdir and upperdir must reside under the same mount
[pid  5849] set_robust_list(0x55557af2d760, 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) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5849] close(3)                    = 0
[pid  5849] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5849] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5849] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=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 5850 attached
, child_tidptr=0x55557af2d750) = 5850
[   90.979847][ T5849] overlayfs: workdir and upperdir must reside under the same mount
[pid  5850] set_robust_list(0x55557af2d760, 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
[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) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5850] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5850] close(3)                    = 0
[pid  5850] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5850] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5850] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=12 /* 0.12 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 5851 attached
, child_tidptr=0x55557af2d750) = 5851
[pid  5851] set_robust_list(0x55557af2d760, 24) = 0
[pid  5851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5851] setpgid(0, 0)               = 0
[pid  5851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5851] write(3, "1000", 4)         = 4
[   91.278877][ T5850] overlayfs: workdir and upperdir must reside under the same mount
[pid  5851] close(3)                    = 0
executing program
[pid  5851] write(1, "executing program\n", 18) = 18
[pid  5851] memfd_create("syzkaller", 0) = 3
[pid  5851] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[pid  5851] 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  5851] munmap(0x7f6357e00000, 138412032) = 0
[pid  5851] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5851] close(3)                    = 0
[pid  5851] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5851] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5851] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[pid  5851] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5851] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid  5851] exit_group(0)               = ?
[pid  5851] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5851, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=12 /* 0.12 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
[   91.610927][ T5851] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5852 attached
, child_tidptr=0x55557af2d750) = 5852
[pid  5852] set_robust_list(0x55557af2d760, 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
executing program
[pid  5852] write(1, "executing program\n", 18) = 18
[pid  5852] memfd_create("syzkaller", 0) = 3
[pid  5852] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5852] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5852] close(3)                    = 0
[pid  5852] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5852] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5852] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
[   91.937361][    T9] cfg80211: failed to load regulatory.db
[   91.947178][ T5852] overlayfs: workdir and upperdir must reside under the same mount
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=0x55557af2d750) = 5854
[pid  5854] set_robust_list(0x55557af2d760, 24) = 0
[pid  5854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[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) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5854] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5854] close(3)                    = 0
[pid  5854] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5854] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5854] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=2 /* 0.02 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 5855 attached
, child_tidptr=0x55557af2d750) = 5855
[pid  5855] set_robust_list(0x55557af2d760, 24) = 0
[   92.304067][ T5854] overlayfs: workdir and upperdir must reside under the same mount
[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
[pid  5855] write(1, "executing program\n", 18executing program
) = 18
[pid  5855] memfd_create("syzkaller", 0) = 3
[pid  5855] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5855] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5855] close(3)                    = 0
[pid  5855] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5855] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5855] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=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 5856 attached
, child_tidptr=0x55557af2d750) = 5856
[pid  5856] set_robust_list(0x55557af2d760, 24) = 0
[pid  5856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[   92.638567][ T5855] overlayfs: workdir and upperdir must reside under the same mount
[pid  5856] setpgid(0, 0)               = 0
[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) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5856] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5856] close(3)                    = 0
[pid  5856] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5856] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5856] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=5 /* 0.05 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 5857 attached
, child_tidptr=0x55557af2d750) = 5857
[   92.948456][ T5856] overlayfs: workdir and upperdir must reside under the same mount
[pid  5857] set_robust_list(0x55557af2d760, 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
[pid  5857] write(3, "1000", 4)         = 4
[pid  5857] close(3)                    = 0
executing program
[pid  5857] write(1, "executing program\n", 18) = 18
[pid  5857] memfd_create("syzkaller", 0) = 3
[pid  5857] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5857] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5857] close(3)                    = 0
[pid  5857] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5857] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5857] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=13 /* 0.13 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
[   93.270817][ T5857] overlayfs: workdir and upperdir must reside under the same mount
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=0x55557af2d750) = 5858
[pid  5858] set_robust_list(0x55557af2d760, 24) = 0
[pid  5858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5858] setpgid(0, 0)               = 0
[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
executing program
[pid  5858] write(1, "executing program\n", 18) = 18
[pid  5858] memfd_create("syzkaller", 0) = 3
[pid  5858] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5858] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5858] close(3)                    = 0
[pid  5858] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5858] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5858] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=3 /* 0.03 s */, si_stime=12 /* 0.12 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
[   93.595942][ T5858] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557af2d750) = 5859
./strace-static-x86_64: Process 5859 attached
[pid  5859] set_robust_list(0x55557af2d760, 24) = 0
[pid  5859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5859] setpgid(0, 0)               = 0
[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) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5859] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5859] close(3)                    = 0
[pid  5859] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5859] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5859] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
[   93.917790][ T5859] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5860 attached
, child_tidptr=0x55557af2d750) = 5860
[pid  5860] set_robust_list(0x55557af2d760, 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) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5860] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5860] close(3)                    = 0
[pid  5860] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5860] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5860] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=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 5861 attached
, child_tidptr=0x55557af2d750) = 5861
[   94.285226][ T5860] overlayfs: workdir and upperdir must reside under the same mount
[pid  5861] set_robust_list(0x55557af2d760, 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
[pid  5861] memfd_create("syzkaller", 0) = 3
[pid  5861] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5861] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5861] close(3)                    = 0
[pid  5861] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5861] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5861] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=2 /* 0.02 s */, si_stime=14 /* 0.14 s */} ---
[   94.575462][ T5861] overlayfs: workdir and upperdir must reside under the same mount
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 5862 attached
, child_tidptr=0x55557af2d750) = 5862
[pid  5862] set_robust_list(0x55557af2d760, 24) = 0
[pid  5862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5862] setpgid(0, 0)               = 0
[pid  5862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5862] write(3, "1000", 4)         = 4
[pid  5862] close(3)                    = 0
executing program
[pid  5862] write(1, "executing program\n", 18) = 18
[pid  5862] memfd_create("syzkaller", 0) = 3
[pid  5862] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[pid  5862] 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  5862] munmap(0x7f6357e00000, 138412032) = 0
[pid  5862] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5862] close(3)                    = 0
[pid  5862] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5862] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5862] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[pid  5862] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5862] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid  5862] exit_group(0)               = ?
[pid  5862] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5862, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = -1 EBUSY (Device or resource busy)
[   94.920225][ T5862] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557af2d750) = 5863
./strace-static-x86_64: Process 5863 attached
[pid  5863] set_robust_list(0x55557af2d760, 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
[pid  5863] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[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(0x7f6357e00000, 138412032) = 0
[pid  5863] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5863] close(3)                    = 0
[pid  5863] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5863] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5863] mkdir("./file1", 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, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -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=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 5865 attached
, child_tidptr=0x55557af2d750) = 5865
[   95.235115][ T5863] overlayfs: workdir and upperdir must reside under the same mount
[pid  5865] set_robust_list(0x55557af2d760, 24) = 0
[pid  5865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5865] setpgid(0, 0)               = 0
[pid  5865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5865] write(3, "1000", 4)         = 4
[pid  5865] close(3)                    = 0
[pid  5865] write(1, "executing program\n", 18executing program
) = 18
[pid  5865] memfd_create("syzkaller", 0) = 3
[pid  5865] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[pid  5865] 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  5865] munmap(0x7f6357e00000, 138412032) = 0
[pid  5865] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5865] close(3)                    = 0
[pid  5865] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5865] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5865] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[pid  5865] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5865] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid  5865] exit_group(0)               = ?
[pid  5865] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5865, 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 5866 attached
, child_tidptr=0x55557af2d750) = 5866
[pid  5866] set_robust_list(0x55557af2d760, 24) = 0
[   95.549413][ T5865] overlayfs: workdir and upperdir must reside under the same mount
[pid  5866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5866] setpgid(0, 0)               = 0
[pid  5866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5866] write(3, "1000", 4)         = 4
[pid  5866] close(3)                    = 0
executing program
[pid  5866] write(1, "executing program\n", 18) = 18
[pid  5866] memfd_create("syzkaller", 0) = 3
[pid  5866] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[pid  5866] 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  5866] munmap(0x7f6357e00000, 138412032) = 0
[pid  5866] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5866] close(3)                    = 0
[pid  5866] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5866] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5866] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[pid  5866] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5866] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid  5866] exit_group(0)               = ?
[pid  5866] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5866, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=12 /* 0.12 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 5867 attached
, child_tidptr=0x55557af2d750) = 5867
[pid  5867] set_robust_list(0x55557af2d760, 24) = 0
[   95.885924][ T5866] overlayfs: workdir and upperdir must reside under the same mount
[pid  5867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5867] setpgid(0, 0)               = 0
[pid  5867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5867] write(3, "1000", 4)         = 4
[pid  5867] close(3)                    = 0
executing program
[pid  5867] write(1, "executing program\n", 18) = 18
[pid  5867] memfd_create("syzkaller", 0) = 3
[pid  5867] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[pid  5867] 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  5867] munmap(0x7f6357e00000, 138412032) = 0
[pid  5867] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5867] close(3)                    = 0
[pid  5867] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5867] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5867] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[pid  5867] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5867] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid  5867] exit_group(0)               = ?
[pid  5867] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5867, 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)
[   96.209090][ T5867] overlayfs: workdir and upperdir must reside under the same mount
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5868 attached
, child_tidptr=0x55557af2d750) = 5868
[pid  5868] set_robust_list(0x55557af2d760, 24) = 0
[pid  5868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5868] setpgid(0, 0)               = 0
[pid  5868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5868] write(3, "1000", 4)         = 4
[pid  5868] close(3)                    = 0
executing program
[pid  5868] write(1, "executing program\n", 18) = 18
[pid  5868] memfd_create("syzkaller", 0) = 3
[pid  5868] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6357e00000
[pid  5868] 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  5868] munmap(0x7f6357e00000, 138412032) = 0
[pid  5868] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5868] close(3)                    = 0
[pid  5868] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  5868] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5868] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[pid  5868] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  5868] mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,,") = -1 EINVAL (Invalid argument)
[pid  5868] exit_group(0)               = ?
[pid  5868] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5868, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=10 /* 0.10 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 5869 attached
, child_tidptr=0x55557af2d750) = 5869
[   96.622282][ T5868] overlayfs: workdir and upperdir must reside under the same mount
[pid  5869] set_robust_list(0x55557af2d760, 24) = 0
[pid  5869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5869] setpgid(0, 0)               = 0