./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor371479330
<...>
Warning: Permanently added '10.128.0.112' (ED25519) to the list of known hosts.
execve("./syz-executor371479330", ["./syz-executor371479330"], 0x7ffe68d87370 /* 10 vars */) = 0
brk(NULL) = 0x555586177000
brk(0x555586177d00) = 0x555586177d00
arch_prctl(ARCH_SET_FS, 0x555586177380) = 0
set_tid_address(0x555586177650) = 5820
set_robust_list(0x555586177660, 24) = 0
rseq(0x555586177ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor371479330", 4096) = 27
getrandom("\x0b\x32\x1e\xfc\x79\xbf\xca\xdc", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555586177d00
brk(0x555586198d00) = 0x555586198d00
brk(0x555586199000) = 0x555586199000
mprotect(0x7f8c9dddf000, 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
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 5821 attached
, child_tidptr=0x555586177650) = 5821
[pid 5821] set_robust_list(0x555586177660, 24) = 0
[pid 5821] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5821] setpgid(0, 0) = 0
[pid 5821] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5821] write(3, "1000", 4) = 4
[pid 5821] close(3) = 0
executing program
[pid 5821] write(1, "executing program\n", 18) = 18
[pid 5821] memfd_create("syzkaller", 0) = 3
[pid 5821] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[pid 5821] 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 5821] munmap(0x7f8c95800000, 138412032) = 0
[pid 5821] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5821] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5821] close(3) = 0
[pid 5821] close(4) = 0
[pid 5821] mkdir("./file1", 0777) = 0
[ 74.620108][ T5821] loop0: detected capacity change from 0 to 32768
[ 74.658575][ T5821] =======================================================
[ 74.658575][ T5821] WARNING: The mand mount option has been deprecated and
[ 74.658575][ T5821] and is ignored by this kernel. Remove the mand
[ 74.658575][ T5821] option from the mount to silence this warning.
[ 74.658575][ T5821] =======================================================
[pid 5821] 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 5821] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3
[pid 5821] chdir("./file1") = 0
[pid 5821] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5821] mkdir("./file0", 0304) = 0
[pid 5821] mkdir("./bus", 000) = 0
[pid 5821] mkdir("./file1", 000) = 0
[ 74.715010][ T5821] ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode.
[ 74.754375][ T5821] overlayfs: upper fs does not support tmpfile.
[ 74.764231][ T5821] overlayfs: upper fs does not support RENAME_WHITEOUT.
[ 74.772065][ T5821]
[ 74.774435][ T5821] ======================================================
[ 74.781481][ T5821] WARNING: possible circular locking dependency detected
[ 74.788531][ T5821] 6.14.0-rc7-syzkaller-00179-gb3ee1e460951 #0 Not tainted
[ 74.795642][ T5821] ------------------------------------------------------
[ 74.802672][ T5821] syz-executor371/5821 is trying to acquire lock:
[ 74.809089][ T5821] ffff88807a72d100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x192/0x4e70
[ 74.822370][ T5821]
[ 74.822370][ T5821] but task is already holding lock:
[ 74.829744][ T5821] ffff88807a6831b8 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x633/0x1930
[ 74.839254][ T5821]
[ 74.839254][ T5821] which lock already depends on the new lock.
[ 74.839254][ T5821]
[ 74.849664][ T5821]
[ 74.849664][ T5821] the existing dependency chain (in reverse order) is:
[ 74.858711][ T5821]
[ 74.858711][ T5821] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}:
[ 74.866567][ T5821] lock_acquire+0x1ed/0x550
[ 74.871619][ T5821] down_write+0x99/0x220
[ 74.876418][ T5821] ocfs2_xattr_set_handle+0x539/0xa10
[ 74.882349][ T5821] ocfs2_init_security_set+0xbd/0xd0
[ 74.888181][ T5821] ocfs2_mknod+0x1ccf/0x2b30
[ 74.893299][ T5821] ocfs2_mkdir+0x1ab/0x470
[ 74.898243][ T5821] vfs_mkdir+0x2f9/0x4f0
[ 74.903031][ T5821] do_mkdirat+0x264/0x3a0
[ 74.907898][ T5821] __x64_sys_mkdir+0x6c/0x80
[ 74.913023][ T5821] do_syscall_64+0xf3/0x230
[ 74.918076][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 74.924529][ T5821]
[ 74.924529][ T5821] -> #3 (jbd2_handle){.+.+}-{0:0}:
[ 74.931857][ T5821] lock_acquire+0x1ed/0x550
[ 74.936905][ T5821] start_this_handle+0x1eb4/0x2110
[ 74.942558][ T5821] jbd2__journal_start+0x2da/0x5d0
[ 74.948243][ T5821] jbd2_journal_start+0x29/0x40
[ 74.953633][ T5821] ocfs2_start_trans+0x3c9/0x700
[ 74.959107][ T5821] ocfs2_reserve_suballoc_bits+0x9f6/0x4e70
[ 74.965551][ T5821] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0
[ 74.972420][ T5821] ocfs2_mknod+0x143a/0x2b30
[ 74.977541][ T5821] ocfs2_mkdir+0x1ab/0x470
[ 74.982485][ T5821] vfs_mkdir+0x2f9/0x4f0
[ 74.987263][ T5821] do_mkdirat+0x264/0x3a0
[ 74.992235][ T5821] __x64_sys_mkdir+0x6c/0x80
[ 74.997378][ T5821] do_syscall_64+0xf3/0x230
[ 75.002428][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 75.008860][ T5821]
[ 75.008860][ T5821] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
[ 75.017388][ T5821] lock_acquire+0x1ed/0x550
[ 75.022426][ T5821] down_read+0xb1/0xa40
[ 75.027109][ T5821] ocfs2_start_trans+0x3be/0x700
[ 75.032580][ T5821] ocfs2_reserve_suballoc_bits+0x9f6/0x4e70
[ 75.039004][ T5821] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0
[ 75.045865][ T5821] ocfs2_mknod+0x143a/0x2b30
[ 75.050983][ T5821] ocfs2_mkdir+0x1ab/0x470
[ 75.055930][ T5821] vfs_mkdir+0x2f9/0x4f0
[ 75.060709][ T5821] do_mkdirat+0x264/0x3a0
[ 75.065575][ T5821] __x64_sys_mkdir+0x6c/0x80
[ 75.070701][ T5821] do_syscall_64+0xf3/0x230
[ 75.075754][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 75.082191][ T5821]
[ 75.082191][ T5821] -> #1 (sb_internal#2){.+.+}-{0:0}:
[ 75.089692][ T5821] lock_acquire+0x1ed/0x550
[ 75.094735][ T5821] ocfs2_start_trans+0x2b9/0x700
[ 75.100241][ T5821] ocfs2_reserve_suballoc_bits+0x9f6/0x4e70
[ 75.106668][ T5821] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0
[ 75.114052][ T5821] ocfs2_mknod+0x143a/0x2b30
[ 75.119176][ T5821] ocfs2_mkdir+0x1ab/0x470
[ 75.124126][ T5821] vfs_mkdir+0x2f9/0x4f0
[ 75.128909][ T5821] do_mkdirat+0x264/0x3a0
[ 75.133780][ T5821] __x64_sys_mkdir+0x6c/0x80
[ 75.138914][ T5821] do_syscall_64+0xf3/0x230
[ 75.143962][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 75.150392][ T5821]
[ 75.150392][ T5821] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}:
[ 75.160934][ T5821] validate_chain+0x18ef/0x5920
[ 75.166319][ T5821] __lock_acquire+0x1397/0x2100
[ 75.171707][ T5821] lock_acquire+0x1ed/0x550
[ 75.176749][ T5821] down_write+0x99/0x220
[ 75.181534][ T5821] ocfs2_reserve_suballoc_bits+0x192/0x4e70
[ 75.187963][ T5821] ocfs2_reserve_clusters_with_limit+0x3dd/0xb60
[ 75.194861][ T5821] ocfs2_init_xattr_set_ctxt+0x433/0x8f0
[ 75.201031][ T5821] ocfs2_xattr_set+0xf4e/0x1930
[ 75.206416][ T5821] __vfs_setxattr+0x468/0x4a0
[ 75.211633][ T5821] __vfs_setxattr_noperm+0x12e/0x660
[ 75.217460][ T5821] vfs_setxattr+0x221/0x430
[ 75.222502][ T5821] ovl_get_workdir+0xda0/0x1930
[ 75.227892][ T5821] ovl_fill_super+0x12b3/0x3640
[ 75.233281][ T5821] get_tree_nodev+0xb7/0x140
[ 75.238408][ T5821] vfs_get_tree+0x90/0x2b0
[ 75.243364][ T5821] do_new_mount+0x2be/0xb40
[ 75.248397][ T5821] __se_sys_mount+0x2d6/0x3c0
[ 75.253605][ T5821] do_syscall_64+0xf3/0x230
[ 75.258653][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 75.265094][ T5821]
[ 75.265094][ T5821] other info that might help us debug this:
[ 75.265094][ T5821]
[ 75.275328][ T5821] Chain exists of:
[ 75.275328][ T5821] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4 --> jbd2_handle --> &oi->ip_xattr_sem
[ 75.275328][ T5821]
[ 75.291088][ T5821] Possible unsafe locking scenario:
[ 75.291088][ T5821]
[ 75.298543][ T5821] CPU0 CPU1
[ 75.303913][ T5821] ---- ----
[ 75.309300][ T5821] lock(&oi->ip_xattr_sem);
[ 75.313908][ T5821] lock(jbd2_handle);
[ 75.320509][ T5821] lock(&oi->ip_xattr_sem);
[ 75.327637][ T5821] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4);
[ 75.334952][ T5821]
[ 75.334952][ T5821] *** DEADLOCK ***
[ 75.334952][ T5821]
[ 75.343100][ T5821] 4 locks held by syz-executor371/5821:
[ 75.348646][ T5821] #0: ffff88806e56a0e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0
[ 75.358789][ T5821] #1: ffff88807f814420 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90
[ 75.368055][ T5821] #2: ffff88807a683480 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x1e1/0x430
[ 75.378720][ T5821] #3: ffff88807a6831b8 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x633/0x1930
[ 75.388673][ T5821]
[ 75.388673][ T5821] stack backtrace:
[ 75.394585][ T5821] CPU: 0 UID: 0 PID: 5821 Comm: syz-executor371 Not tainted 6.14.0-rc7-syzkaller-00179-gb3ee1e460951 #0
[ 75.394605][ T5821] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[ 75.394619][ T5821] Call Trace:
[ 75.394628][ T5821] <TASK>
[ 75.394636][ T5821] dump_stack_lvl+0x241/0x360
[ 75.394658][ T5821] ? __pfx_dump_stack_lvl+0x10/0x10
[ 75.394673][ T5821] ? __pfx__printk+0x10/0x10
[ 75.394701][ T5821] print_circular_bug+0x13a/0x1b0
[ 75.394720][ T5821] check_noncircular+0x36a/0x4a0
[ 75.394738][ T5821] ? __pfx_check_noncircular+0x10/0x10
[ 75.394754][ T5821] ? lockdep_lock+0x123/0x2b0
[ 75.394779][ T5821] validate_chain+0x18ef/0x5920
[ 75.394803][ T5821] ? __pfx_validate_chain+0x10/0x10
[ 75.394826][ T5821] ? lock_acquire+0x264/0x550
[ 75.394849][ T5821] ? mark_lock+0x9a/0x360
[ 75.394877][ T5821] ? ocfs2_get_system_file_inode+0x1e3/0x840
[ 75.394904][ T5821] ? __pfx_lock_release+0x10/0x10
[ 75.394927][ T5821] ? mark_lock+0x9a/0x360
[ 75.394952][ T5821] __lock_acquire+0x1397/0x2100
[ 75.394980][ T5821] lock_acquire+0x1ed/0x550
[ 75.395002][ T5821] ? ocfs2_reserve_suballoc_bits+0x192/0x4e70
[ 75.395022][ T5821] ? __pfx_lock_acquire+0x10/0x10
[ 75.395045][ T5821] ? __pfx___might_resched+0x10/0x10
[ 75.395067][ T5821] ? __pfx_ocfs2_get_system_file_inode+0x10/0x10
[ 75.395096][ T5821] down_write+0x99/0x220
[ 75.395112][ T5821] ? ocfs2_reserve_suballoc_bits+0x192/0x4e70
[ 75.395130][ T5821] ? __pfx_down_write+0x10/0x10
[ 75.395149][ T5821] ocfs2_reserve_suballoc_bits+0x192/0x4e70
[ 75.395169][ T5821] ? __pfx_validate_chain+0x10/0x10
[ 75.395186][ T5821] ? kfence_guarded_alloc+0x8b8/0xcd0
[ 75.395215][ T5821] ? __pfx_ocfs2_reserve_suballoc_bits+0x10/0x10
[ 75.395234][ T5821] ? __kfence_alloc+0x3ca/0x400
[ 75.395257][ T5821] ? mark_lock+0x9a/0x360
[ 75.395280][ T5821] ? ocfs2_reserve_clusters_with_limit+0xe6/0xb60
[ 75.395300][ T5821] ? __lock_acquire+0x1397/0x2100
[ 75.395332][ T5821] ? __pfx_lock_acquire+0x10/0x10
[ 75.395353][ T5821] ? ocfs2_alloc_should_use_local+0x155/0x320
[ 75.395378][ T5821] ? __pfx_lock_release+0x10/0x10
[ 75.395399][ T5821] ? do_raw_spin_lock+0x14f/0x370
[ 75.395420][ T5821] ? do_raw_spin_unlock+0x13c/0x8b0
[ 75.395441][ T5821] ? _raw_spin_unlock+0x28/0x50
[ 75.395460][ T5821] ? ocfs2_alloc_should_use_local+0x155/0x320
[ 75.395485][ T5821] ocfs2_reserve_clusters_with_limit+0x3dd/0xb60
[ 75.395506][ T5821] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10
[ 75.395528][ T5821] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10
[ 75.395555][ T5821] ? ocfs2_xattr_set+0xf00/0x1930
[ 75.395577][ T5821] ocfs2_init_xattr_set_ctxt+0x433/0x8f0
[ 75.395601][ T5821] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10
[ 75.395639][ T5821] ? up_write+0x1a9/0x590
[ 75.395655][ T5821] ? __pfx_ocfs2_truncate_log_needs_flush+0x10/0x10
[ 75.395676][ T5821] ? __pfx_up_write+0x10/0x10
[ 75.395693][ T5821] ? __kmalloc_cache_noprof+0x243/0x390
[ 75.395709][ T5821] ? ocfs2_xattr_set+0x4d5/0x1930
[ 75.395730][ T5821] ocfs2_xattr_set+0xf4e/0x1930
[ 75.395756][ T5821] ? __pfx_ocfs2_xattr_set+0x10/0x10
[ 75.395777][ T5821] ? _prb_read_valid+0xa4c/0xad0
[ 75.395801][ T5821] ? mark_lock+0x9a/0x360
[ 75.395837][ T5821] ? smk_tskacc+0x300/0x370
[ 75.395861][ T5821] ? posix_xattr_acl+0xa9/0xd0
[ 75.395879][ T5821] ? evm_protect_xattr+0x4be/0xb40
[ 75.395897][ T5821] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10
[ 75.395919][ T5821] __vfs_setxattr+0x468/0x4a0
[ 75.395949][ T5821] __vfs_setxattr_noperm+0x12e/0x660
[ 75.395978][ T5821] vfs_setxattr+0x221/0x430
[ 75.396006][ T5821] ? __pfx_vfs_setxattr+0x10/0x10
[ 75.396031][ T5821] ? _raw_spin_unlock+0x28/0x50
[ 75.396052][ T5821] ? dput+0x37/0x2b0
[ 75.396070][ T5821] ovl_get_workdir+0xda0/0x1930
[ 75.396097][ T5821] ? __pfx_ovl_get_workdir+0x10/0x10
[ 75.396121][ T5821] ? ovl_inuse_trylock+0xab/0xf0
[ 75.396142][ T5821] ? do_raw_spin_lock+0x14f/0x370
[ 75.396166][ T5821] ? _raw_spin_unlock+0x28/0x50
[ 75.396185][ T5821] ? ovl_inuse_trylock+0xab/0xf0
[ 75.396207][ T5821] ovl_fill_super+0x12b3/0x3640
[ 75.396239][ T5821] ? __pfx_ovl_fill_super+0x10/0x10
[ 75.396260][ T5821] ? __pfx_lockdep_init_map_type+0x10/0x10
[ 75.396284][ T5821] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 75.396317][ T5821] ? sget_fc+0x960/0xa50
[ 75.396336][ T5821] ? __pfx_set_anon_super_fc+0x10/0x10
[ 75.396357][ T5821] ? __pfx_ovl_fill_super+0x10/0x10
[ 75.396378][ T5821] get_tree_nodev+0xb7/0x140
[ 75.396400][ T5821] vfs_get_tree+0x90/0x2b0
[ 75.396423][ T5821] do_new_mount+0x2be/0xb40
[ 75.396440][ T5821] ? __pfx_do_new_mount+0x10/0x10
[ 75.396458][ T5821] __se_sys_mount+0x2d6/0x3c0
[ 75.396476][ T5821] ? __pfx___se_sys_mount+0x10/0x10
[ 75.396493][ T5821] ? do_syscall_64+0x100/0x230
[ 75.396519][ T5821] ? __x64_sys_mount+0x20/0xc0
[ 75.396535][ T5821] do_syscall_64+0xf3/0x230
[ 75.396560][ T5821] ? clear_bhb_loop+0x35/0x90
[ 75.396584][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 75.396614][ T5821] RIP: 0033:0x7f8c9dd67bd9
[ 75.396633][ T5821] 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
[ 75.396646][ T5821] RSP: 002b:00007ffebc7976e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 75.396663][ T5821] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f8c9dd67bd9
[ 75.396676][ T5821] RDX: 0000200000000340 RSI: 00002000000000c0 RDI: 0000000000000000
[pid 5821] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5821] exit_group(0) = ?
[pid 5821] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5821, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=26 /* 0.26 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
[ 75.396687][ T5821] RBP: 00007f8c9dddf5f0 R08: 0000200000000080 R09: 00005555861784c0
[ 75.396698][ T5821] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffebc797710
[ 75.396708][ T5821] R13: 00007ffebc797938 R14: 431bde82d7b634db R15: 00007f8c9ddb003b
[ 75.396725][ T5821] </TASK>
[ 75.949771][ T5821] overlayfs: upper fs missing required features.
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 5825 attached
, child_tidptr=0x555586177650) = 5825
[pid 5825] set_robust_list(0x555586177660, 24) = 0
[pid 5825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5825] setpgid(0, 0) = 0
[pid 5825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5825] write(3, "1000", 4) = 4
[pid 5825] close(3) = 0
[pid 5825] write(1, "executing program\n", 18executing program
) = 18
[pid 5825] memfd_create("syzkaller", 0) = 3
[pid 5825] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[pid 5825] 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 5825] munmap(0x7f8c95800000, 138412032) = 0
[pid 5825] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5825] close(3) = 0
[pid 5825] mkdir("./file0", 0304) = 0
[pid 5825] mkdir("./bus", 000) = 0
[pid 5825] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5825] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5825] exit_group(0) = ?
[pid 5825] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5825, 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 5826 attached
<unfinished ...>
[pid 5826] set_robust_list(0x555586177660, 24 <unfinished ...>
[pid 5820] <... clone resumed>, child_tidptr=0x555586177650) = 5826
[pid 5826] <... set_robust_list resumed>) = 0
[pid 5826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5826] setpgid(0, 0) = 0
[pid 5826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5826] write(3, "1000", 4) = 4
[pid 5826] close(3) = 0
executing program
[pid 5826] write(1, "executing program\n", 18) = 18
[pid 5826] memfd_create("syzkaller", 0) = 3
[ 76.226325][ T5825] overlayfs: workdir and upperdir must reside under the same mount
[pid 5826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[pid 5826] 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 5826] munmap(0x7f8c95800000, 138412032) = 0
[pid 5826] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5826] close(3) = 0
[pid 5826] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5826] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5826] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5826] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5826] exit_group(0) = ?
[pid 5826] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5826, 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 5827 attached
<unfinished ...>
[pid 5827] set_robust_list(0x555586177660, 24) = 0
[pid 5820] <... clone resumed>, child_tidptr=0x555586177650) = 5827
[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) = 0x7f8c95800000
[ 76.458712][ T5826] overlayfs: workdir and upperdir must reside under the same mount
[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(0x7f8c95800000, 138412032) = 0
[pid 5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5827] close(3) = 0
[pid 5827] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5827] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5827] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5827] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5827] exit_group(0) = ?
[pid 5827] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5827, 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)
[ 76.701065][ T5827] 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 5828 attached
, child_tidptr=0x555586177650) = 5828
[pid 5828] set_robust_list(0x555586177660, 24) = 0
[pid 5828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5828] setpgid(0, 0) = 0
[pid 5828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5828] write(3, "1000", 4) = 4
[pid 5828] close(3) = 0
executing program
[pid 5828] write(1, "executing program\n", 18) = 18
[pid 5828] memfd_create("syzkaller", 0) = 3
[pid 5828] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[pid 5828] 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 5828] munmap(0x7f8c95800000, 138412032) = 0
[pid 5828] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5828] close(3) = 0
[pid 5828] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5828] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5828] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5828] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5828] exit_group(0) = ?
[pid 5828] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5828, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 77.026720][ T5828] 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 5829 attached
, child_tidptr=0x555586177650) = 5829
[pid 5829] set_robust_list(0x555586177660, 24) = 0
[pid 5829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5829] setpgid(0, 0) = 0
[pid 5829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5829] write(3, "1000", 4) = 4
[pid 5829] close(3) = 0
[pid 5829] write(1, "executing program\n", 18executing program
) = 18
[pid 5829] memfd_create("syzkaller", 0) = 3
[pid 5829] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[pid 5829] 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 5829] munmap(0x7f8c95800000, 138412032) = 0
[pid 5829] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5829] close(3) = 0
[pid 5829] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5829] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5829] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5829] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5829] exit_group(0) = ?
[pid 5829] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5829, si_uid=0, si_status=0, si_utime=1 /* 0.01 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 5830 attached
, child_tidptr=0x555586177650) = 5830
[ 77.359336][ T5829] overlayfs: workdir and upperdir must reside under the same mount
[pid 5830] set_robust_list(0x555586177660, 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
executing program
[pid 5830] write(1, "executing program\n", 18) = 18
[pid 5830] memfd_create("syzkaller", 0) = 3
[pid 5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 138412032) = 0
[pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5830] close(3) = 0
[pid 5830] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5830] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5830] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5830] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[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=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)
[ 77.725285][ T5830] 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 5831 attached
, child_tidptr=0x555586177650) = 5831
[pid 5831] set_robust_list(0x555586177660, 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
[pid 5831] write(1, "executing program\n", 18executing program
) = 18
[pid 5831] memfd_create("syzkaller", 0) = 3
[pid 5831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 138412032) = 0
[pid 5831] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5831] close(3) = 0
[pid 5831] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5831] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5831] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5831] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=11 /* 0.11 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 78.072769][ T5831] 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 5832 attached
, child_tidptr=0x555586177650) = 5832
[pid 5832] set_robust_list(0x555586177660, 24) = 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(3executing program
) = 0
[pid 5832] write(1, "executing program\n", 18) = 18
[pid 5832] memfd_create("syzkaller", 0) = 3
[pid 5832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 138412032) = 0
[pid 5832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5832] close(3) = 0
[pid 5832] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5832] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5832] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5832] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=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 5833 attached
, child_tidptr=0x555586177650) = 5833
[ 78.408004][ T5832] overlayfs: workdir and upperdir must reside under the same mount
[pid 5833] set_robust_list(0x555586177660, 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
executing program
[pid 5833] write(1, "executing program\n", 18) = 18
[pid 5833] memfd_create("syzkaller", 0) = 3
[pid 5833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 138412032) = 0
[pid 5833] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5833] close(3) = 0
[pid 5833] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5833] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5833] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5833] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=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)
[ 78.734909][ T5833] 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 5834 attached
, child_tidptr=0x555586177650) = 5834
[pid 5834] set_robust_list(0x555586177660, 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
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) = 0x7f8c95800000
[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(0x7f8c95800000, 138412032) = 0
[pid 5834] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5834] close(3) = 0
[pid 5834] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5834] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5834] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5834] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=5 /* 0.05 s */, si_stime=10 /* 0.10 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 79.062175][ T5834] 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 5835 attached
, child_tidptr=0x555586177650) = 5835
[pid 5835] set_robust_list(0x555586177660, 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
[pid 5835] close(3executing program
) = 0
[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) = 0x7f8c95800000
[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(0x7f8c95800000, 138412032) = 0
[pid 5835] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5835] close(3) = 0
[pid 5835] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5835] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5835] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5835] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=2 /* 0.02 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 5836 attached
, child_tidptr=0x555586177650) = 5836
[pid 5836] set_robust_list(0x555586177660, 24) = 0
[ 79.391521][ T5835] overlayfs: workdir and upperdir must reside under the same mount
[pid 5836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 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) = 0x7f8c95800000
[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(0x7f8c95800000, 138412032) = 0
[pid 5836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5836] close(3) = 0
[pid 5836] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5836] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5836] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5836] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=10 /* 0.10 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 79.727719][ T5836] 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 5837 attached
, child_tidptr=0x555586177650) = 5837
[pid 5837] set_robust_list(0x555586177660, 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
[pid 5837] write(1, "executing program\n", 18executing program
) = 18
[pid 5837] memfd_create("syzkaller", 0) = 3
[pid 5837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 138412032) = 0
[pid 5837] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5837] close(3) = 0
[pid 5837] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5837] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5837] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5837] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=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 5838 attached
, child_tidptr=0x555586177650) = 5838
[ 80.044171][ T5837] overlayfs: workdir and upperdir must reside under the same mount
[pid 5838] set_robust_list(0x555586177660, 24) = 0
[pid 5838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5838] setpgid(0, 0) = 0
[pid 5838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5838] write(3, "1000", 4) = 4
[pid 5838] close(3) = 0
executing program
[pid 5838] write(1, "executing program\n", 18) = 18
[pid 5838] memfd_create("syzkaller", 0) = 3
[pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[pid 5838] 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 5838] munmap(0x7f8c95800000, 138412032) = 0
[pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5838] close(3) = 0
[pid 5838] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5838] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5838] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5838] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument)
[pid 5838] exit_group(0) = ?
[pid 5838] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5838, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=10 /* 0.10 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=0x555586177650) = 5839
[ 80.369157][ T5838] overlayfs: workdir and upperdir must reside under the same mount
[pid 5839] set_robust_list(0x555586177660, 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
[pid 5839] memfd_create("syzkaller", 0) = 3
[pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 138412032) = 0
[pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5839] close(3) = 0
[pid 5839] mkdir("./file0", 0304) = -1 EEXIST (File exists)
[pid 5839] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5839] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5839] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=2 /* 0.02 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 5840 attached
, child_tidptr=0x555586177650) = 5840
[pid 5840] set_robust_list(0x555586177660, 24) = 0
[ 80.718826][ T5839] overlayfs: workdir and upperdir must reside under the same mount
[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
[pid 5840] write(1, "executing program\n", 18executing program
) = 18
[pid 5840] memfd_create("syzkaller", 0) = 3
[pid 5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 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", 0304) = -1 EEXIST (File exists)
[pid 5840] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5840] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5840] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 81.067697][ T5840] 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 5841 attached
, child_tidptr=0x555586177650) = 5841
[pid 5841] set_robust_list(0x555586177660, 24) = 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
[pid 5841] memfd_create("syzkaller", 0) = 3
[pid 5841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 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", 0304) = -1 EEXIST (File exists)
[pid 5841] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5841] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5841] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=3 /* 0.03 s */, si_stime=12 /* 0.12 s */} ---
[ 81.436101][ T5841] 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 5842 attached
, child_tidptr=0x555586177650) = 5842
[pid 5842] set_robust_list(0x555586177660, 24) = 0
[pid 5842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[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
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) = 0x7f8c95800000
[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(0x7f8c95800000, 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", 0304) = -1 EEXIST (File exists)
[pid 5842] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5842] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5842] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 81.764295][ 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=0x555586177650) = 5843
[pid 5843] set_robust_list(0x555586177660, 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
[pid 5843] write(1, "executing program\n", 18executing program
) = 18
[pid 5843] memfd_create("syzkaller", 0) = 3
[pid 5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 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", 0304) = -1 EEXIST (File exists)
[pid 5843] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5843] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5843] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=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)
[ 82.129945][ T5843] 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 5844 attached
, child_tidptr=0x555586177650) = 5844
[pid 5844] set_robust_list(0x555586177660, 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) = 0x7f8c95800000
[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(0x7f8c95800000, 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", 0304) = -1 EEXIST (File exists)
[pid 5844] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5844] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5844] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=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 5845 attached
, child_tidptr=0x555586177650) = 5845
[pid 5845] set_robust_list(0x555586177660, 24) = 0
[ 82.457100][ 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
[pid 5845] write(1, "executing program\n", 18executing program
) = 18
[pid 5845] memfd_create("syzkaller", 0) = 3
[pid 5845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 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", 0304) = -1 EEXIST (File exists)
[pid 5845] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5845] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5845] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 82.778752][ T5845] 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 5846 attached
, child_tidptr=0x555586177650) = 5846
[pid 5846] set_robust_list(0x555586177660, 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) = 0x7f8c95800000
[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(0x7f8c95800000, 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", 0304) = -1 EEXIST (File exists)
[pid 5846] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5846] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5846] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=2 /* 0.02 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 5847 attached
, child_tidptr=0x555586177650) = 5847
[ 83.099729][ T5846] overlayfs: workdir and upperdir must reside under the same mount
[pid 5847] set_robust_list(0x555586177660, 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
[pid 5847] write(1, "executing program\n", 18executing program
) = 18
[pid 5847] memfd_create("syzkaller", 0) = 3
[pid 5847] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 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", 0304) = -1 EEXIST (File exists)
[pid 5847] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5847] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5847] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=12 /* 0.12 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 83.370854][ T5847] 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 5848 attached
, child_tidptr=0x555586177650) = 5848
[pid 5848] set_robust_list(0x555586177660, 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
[pid 5848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 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", 0304) = -1 EEXIST (File exists)
[pid 5848] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5848] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5848] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=3 /* 0.03 s */, si_stime=11 /* 0.11 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 83.676866][ T5848] 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 5849 attached
, child_tidptr=0x555586177650) = 5849
[pid 5849] set_robust_list(0x555586177660, 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) = 0x7f8c95800000
[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(0x7f8c95800000, 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", 0304) = -1 EEXIST (File exists)
[pid 5849] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5849] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5849] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
[ 84.021341][ T5849] 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 5850 attached
, child_tidptr=0x555586177650) = 5850
[pid 5850] set_robust_list(0x555586177660, 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
[pid 5850] write(1, "executing program\n", 18executing program
) = 18
[pid 5850] memfd_create("syzkaller", 0) = 3
[pid 5850] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 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", 0304) = -1 EEXIST (File exists)
[pid 5850] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5850] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5850] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=0, si_stime=15 /* 0.15 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 84.371308][ T5850] 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 5851 attached
, child_tidptr=0x555586177650) = 5851
[pid 5851] set_robust_list(0x555586177660, 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
[pid 5851] close(3) = 0
[pid 5851] write(1, "executing program\n", 18executing program
) = 18
[pid 5851] memfd_create("syzkaller", 0) = 3
[pid 5851] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8c95800000
[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(0x7f8c95800000, 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", 0304) = -1 EEXIST (File exists)
[pid 5851] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5851] mkdir("./file1", 000) = -1 EEXIST (File exists)
[pid 5851] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -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=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 5852 attached
, child_tidptr=0x555586177650) = 5852
[ 84.697690][ T5851] overlayfs: workdir and upperdir must reside under the same mount
[pid 5852] set_robust_list(0x555586177660, 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) = 0x7f8c95800000