./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2613249911
<...>
Warning: Permanently added '10.128.1.143' (ED25519) to the list of known hosts.
execve("./syz-executor2613249911", ["./syz-executor2613249911"], 0x7ffd3f0612b0 /* 10 vars */) = 0
brk(NULL) = 0x55558534e000
brk(0x55558534ed00) = 0x55558534ed00
arch_prctl(ARCH_SET_FS, 0x55558534e380) = 0
set_tid_address(0x55558534e650) = 5822
set_robust_list(0x55558534e660, 24) = 0
rseq(0x55558534eca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor2613249911", 4096) = 28
getrandom("\xde\xfc\x1f\x97\xd2\x19\xd2\x96", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55558534ed00
brk(0x55558536fd00) = 0x55558536fd00
brk(0x555585370000) = 0x555585370000
mprotect(0x7f009f41b000, 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 5823 attached
, child_tidptr=0x55558534e650) = 5823
[pid 5823] set_robust_list(0x55558534e660, 24) = 0
[pid 5823] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5823] setpgid(0, 0) = 0
[pid 5823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5823] write(3, "1000", 4) = 4
[pid 5823] close(3) = 0
executing program
[pid 5823] write(1, "executing program\n", 18) = 18
[pid 5823] memfd_create("syzkaller", 0) = 3
[pid 5823] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[pid 5823] 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 5823] munmap(0x7f0096e00000, 138412032) = 0
[pid 5823] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5823] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5823] close(3) = 0
[pid 5823] close(4) = 0
[pid 5823] mkdir("./file1", 0777) = 0
syzkaller login: [ 75.614353][ T5823] loop0: detected capacity change from 0 to 32768
[ 75.660438][ T5823] =======================================================
[ 75.660438][ T5823] WARNING: The mand mount option has been deprecated and
[ 75.660438][ T5823] and is ignored by this kernel. Remove the mand
[ 75.660438][ T5823] option from the mount to silence this warning.
[ 75.660438][ T5823] =======================================================
[pid 5823] 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 5823] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3
[pid 5823] chdir("./file1") = 0
[pid 5823] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5823] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid 5823] mkdirat(AT_FDCWD, "./file1", 000) = 0
[pid 5823] mkdir("./bus", 000) = 0
[ 75.712402][ T5823] ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode.
[ 75.773482][ T5823] overlayfs: upper fs does not support tmpfile.
[ 75.782509][ T5823] overlayfs: upper fs does not support RENAME_WHITEOUT.
[ 75.790128][ T5823]
[ 75.792470][ T5823] ======================================================
[ 75.799585][ T5823] WARNING: possible circular locking dependency detected
[ 75.806617][ T5823] 6.14.0-rc7-syzkaller-00074-ga7f2e10ecd8f #0 Not tainted
[ 75.813726][ T5823] ------------------------------------------------------
[ 75.820741][ T5823] syz-executor261/5823 is trying to acquire lock:
[ 75.827140][ T5823] ffff88807381d100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x192/0x4e70
[ 75.840454][ T5823]
[ 75.840454][ T5823] but task is already holding lock:
[ 75.847808][ T5823] ffff888073824e38 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x633/0x1930
[ 75.857296][ T5823]
[ 75.857296][ T5823] which lock already depends on the new lock.
[ 75.857296][ T5823]
[ 75.867718][ T5823]
[ 75.867718][ T5823] the existing dependency chain (in reverse order) is:
[ 75.876729][ T5823]
[ 75.876729][ T5823] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}:
[ 75.884605][ T5823] lock_acquire+0x1ed/0x550
[ 75.889670][ T5823] down_write+0x99/0x220
[ 75.894455][ T5823] ocfs2_xattr_set_handle+0x539/0xa10
[ 75.900347][ T5823] ocfs2_init_security_set+0xbd/0xd0
[ 75.906150][ T5823] ocfs2_mknod+0x1ccf/0x2b30
[ 75.911252][ T5823] ocfs2_mkdir+0x1ab/0x470
[ 75.916179][ T5823] vfs_mkdir+0x2f9/0x4f0
[ 75.920934][ T5823] do_mkdirat+0x264/0x3a0
[ 75.925791][ T5823] __x64_sys_mkdirat+0x87/0xa0
[ 75.931168][ T5823] do_syscall_64+0xf3/0x230
[ 75.936212][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 75.942649][ T5823]
[ 75.942649][ T5823] -> #3 (jbd2_handle){.+.+}-{0:0}:
[ 75.949967][ T5823] lock_acquire+0x1ed/0x550
[ 75.954991][ T5823] start_this_handle+0x1eb4/0x2110
[ 75.960636][ T5823] jbd2__journal_start+0x2da/0x5d0
[ 75.966268][ T5823] jbd2_journal_start+0x29/0x40
[ 75.971641][ T5823] ocfs2_start_trans+0x3c9/0x700
[ 75.977114][ T5823] ocfs2_reserve_suballoc_bits+0x9f6/0x4e70
[ 75.983528][ T5823] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0
[ 75.990372][ T5823] ocfs2_mknod+0x143a/0x2b30
[ 75.995479][ T5823] ocfs2_mkdir+0x1ab/0x470
[ 76.000405][ T5823] vfs_mkdir+0x2f9/0x4f0
[ 76.005189][ T5823] do_mkdirat+0x264/0x3a0
[ 76.010036][ T5823] __x64_sys_mkdirat+0x87/0xa0
[ 76.015334][ T5823] do_syscall_64+0xf3/0x230
[ 76.020359][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 76.026772][ T5823]
[ 76.026772][ T5823] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}:
[ 76.035311][ T5823] lock_acquire+0x1ed/0x550
[ 76.040333][ T5823] down_read+0xb1/0xa40
[ 76.045005][ T5823] ocfs2_start_trans+0x3be/0x700
[ 76.050464][ T5823] ocfs2_reserve_suballoc_bits+0x9f6/0x4e70
[ 76.056890][ T5823] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0
[ 76.063748][ T5823] ocfs2_mknod+0x143a/0x2b30
[ 76.068852][ T5823] ocfs2_mkdir+0x1ab/0x470
[ 76.073783][ T5823] vfs_mkdir+0x2f9/0x4f0
[ 76.078547][ T5823] do_mkdirat+0x264/0x3a0
[ 76.083402][ T5823] __x64_sys_mkdirat+0x87/0xa0
[ 76.088687][ T5823] do_syscall_64+0xf3/0x230
[ 76.093735][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 76.100174][ T5823]
[ 76.100174][ T5823] -> #1 (sb_internal#2){.+.+}-{0:0}:
[ 76.107667][ T5823] lock_acquire+0x1ed/0x550
[ 76.113303][ T5823] ocfs2_start_trans+0x2b9/0x700
[ 76.118761][ T5823] ocfs2_reserve_suballoc_bits+0x9f6/0x4e70
[ 76.125174][ T5823] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0
[ 76.132020][ T5823] ocfs2_mknod+0x143a/0x2b30
[ 76.137127][ T5823] ocfs2_mkdir+0x1ab/0x470
[ 76.142055][ T5823] vfs_mkdir+0x2f9/0x4f0
[ 76.146826][ T5823] do_mkdirat+0x264/0x3a0
[ 76.151676][ T5823] __x64_sys_mkdirat+0x87/0xa0
[ 76.156960][ T5823] do_syscall_64+0xf3/0x230
[ 76.161983][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 76.168394][ T5823]
[ 76.168394][ T5823] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}:
[ 76.178916][ T5823] validate_chain+0x18ef/0x5920
[ 76.184311][ T5823] __lock_acquire+0x1397/0x2100
[ 76.189716][ T5823] lock_acquire+0x1ed/0x550
[ 76.194753][ T5823] down_write+0x99/0x220
[ 76.199520][ T5823] ocfs2_reserve_suballoc_bits+0x192/0x4e70
[ 76.205946][ T5823] ocfs2_reserve_clusters_with_limit+0x3dd/0xb60
[ 76.212818][ T5823] ocfs2_init_xattr_set_ctxt+0x433/0x8f0
[ 76.218980][ T5823] ocfs2_xattr_set+0xf4e/0x1930
[ 76.224360][ T5823] __vfs_setxattr+0x468/0x4a0
[ 76.229576][ T5823] __vfs_setxattr_noperm+0x12e/0x660
[ 76.235387][ T5823] vfs_setxattr+0x221/0x430
[ 76.240436][ T5823] ovl_get_workdir+0xda0/0x1930
[ 76.245847][ T5823] ovl_fill_super+0x12b3/0x3640
[ 76.251234][ T5823] get_tree_nodev+0xb7/0x140
[ 76.256353][ T5823] vfs_get_tree+0x90/0x2b0
[ 76.261307][ T5823] do_new_mount+0x2be/0xb40
[ 76.266327][ T5823] __se_sys_mount+0x2d6/0x3c0
[ 76.271535][ T5823] do_syscall_64+0xf3/0x230
[ 76.276589][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 76.283009][ T5823]
[ 76.283009][ T5823] other info that might help us debug this:
[ 76.283009][ T5823]
[ 76.293233][ T5823] Chain exists of:
[ 76.293233][ T5823] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4 --> jbd2_handle --> &oi->ip_xattr_sem
[ 76.293233][ T5823]
[ 76.309429][ T5823] Possible unsafe locking scenario:
[ 76.309429][ T5823]
[ 76.316875][ T5823] CPU0 CPU1
[ 76.322234][ T5823] ---- ----
[ 76.327615][ T5823] lock(&oi->ip_xattr_sem);
[ 76.332209][ T5823] lock(jbd2_handle);
[ 76.338798][ T5823] lock(&oi->ip_xattr_sem);
[ 76.345906][ T5823] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4);
[ 76.353193][ T5823]
[ 76.353193][ T5823] *** DEADLOCK ***
[ 76.353193][ T5823]
[ 76.361330][ T5823] 4 locks held by syz-executor261/5823:
[ 76.366866][ T5823] #0: ffff88807d2c20e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0
[ 76.376984][ T5823] #1: ffff88807a5c8420 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90
[ 76.386136][ T5823] #2: ffff888073825100 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x1e1/0x430
[ 76.396678][ T5823] #3: ffff888073824e38 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x633/0x1930
[ 76.406606][ T5823]
[ 76.406606][ T5823] stack backtrace:
[ 76.412511][ T5823] CPU: 0 UID: 0 PID: 5823 Comm: syz-executor261 Not tainted 6.14.0-rc7-syzkaller-00074-ga7f2e10ecd8f #0
[ 76.412529][ T5823] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[ 76.412541][ T5823] Call Trace:
[ 76.412549][ T5823]
[ 76.412556][ T5823] dump_stack_lvl+0x241/0x360
[ 76.412573][ T5823] ? __pfx_dump_stack_lvl+0x10/0x10
[ 76.412587][ T5823] ? __pfx__printk+0x10/0x10
[ 76.412613][ T5823] print_circular_bug+0x13a/0x1b0
[ 76.412630][ T5823] check_noncircular+0x36a/0x4a0
[ 76.412646][ T5823] ? __pfx_check_noncircular+0x10/0x10
[ 76.412661][ T5823] ? lockdep_lock+0x123/0x2b0
[ 76.412684][ T5823] validate_chain+0x18ef/0x5920
[ 76.412706][ T5823] ? __pfx_validate_chain+0x10/0x10
[ 76.412723][ T5823] ? mark_lock+0x9a/0x360
[ 76.412748][ T5823] ? ocfs2_get_system_file_inode+0x1e3/0x840
[ 76.412773][ T5823] ? __pfx_lock_release+0x10/0x10
[ 76.412794][ T5823] ? mark_lock+0x9a/0x360
[ 76.412816][ T5823] __lock_acquire+0x1397/0x2100
[ 76.412842][ T5823] lock_acquire+0x1ed/0x550
[ 76.412861][ T5823] ? ocfs2_reserve_suballoc_bits+0x192/0x4e70
[ 76.412880][ T5823] ? __pfx_lock_acquire+0x10/0x10
[ 76.412900][ T5823] ? __pfx___might_resched+0x10/0x10
[ 76.412919][ T5823] ? __pfx_ocfs2_get_system_file_inode+0x10/0x10
[ 76.412945][ T5823] down_write+0x99/0x220
[ 76.412960][ T5823] ? ocfs2_reserve_suballoc_bits+0x192/0x4e70
[ 76.412975][ T5823] ? __pfx_down_write+0x10/0x10
[ 76.412992][ T5823] ocfs2_reserve_suballoc_bits+0x192/0x4e70
[ 76.413010][ T5823] ? __pfx_validate_chain+0x10/0x10
[ 76.413025][ T5823] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 76.413046][ T5823] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 76.413069][ T5823] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 76.413089][ T5823] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 76.413109][ T5823] ? __pfx_ocfs2_reserve_suballoc_bits+0x10/0x10
[ 76.413128][ T5823] ? mark_lock+0x9a/0x360
[ 76.413150][ T5823] ? __lock_acquire+0x1397/0x2100
[ 76.413179][ T5823] ? __pfx_lock_acquire+0x10/0x10
[ 76.413198][ T5823] ? ocfs2_alloc_should_use_local+0x155/0x320
[ 76.413220][ T5823] ? __pfx_lock_release+0x10/0x10
[ 76.413239][ T5823] ? do_raw_spin_lock+0x14f/0x370
[ 76.413258][ T5823] ? do_raw_spin_unlock+0x13c/0x8b0
[ 76.413277][ T5823] ? _raw_spin_unlock+0x28/0x50
[ 76.413294][ T5823] ? ocfs2_alloc_should_use_local+0x155/0x320
[ 76.413316][ T5823] ocfs2_reserve_clusters_with_limit+0x3dd/0xb60
[ 76.413335][ T5823] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10
[ 76.413355][ T5823] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10
[ 76.413380][ T5823] ? ocfs2_xattr_set+0xf00/0x1930
[ 76.413399][ T5823] ocfs2_init_xattr_set_ctxt+0x433/0x8f0
[ 76.413420][ T5823] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10
[ 76.413440][ T5823] ? up_write+0x1a9/0x590
[ 76.413455][ T5823] ? __pfx_ocfs2_truncate_log_needs_flush+0x10/0x10
[ 76.413473][ T5823] ? __pfx_up_write+0x10/0x10
[ 76.413488][ T5823] ? __kmalloc_cache_noprof+0x243/0x390
[ 76.413503][ T5823] ? ocfs2_xattr_set+0x4d5/0x1930
[ 76.413527][ T5823] ocfs2_xattr_set+0xf4e/0x1930
[ 76.413550][ T5823] ? __pfx_ocfs2_xattr_set+0x10/0x10
[ 76.413568][ T5823] ? _prb_read_valid+0xa4c/0xad0
[ 76.413590][ T5823] ? mark_lock+0x9a/0x360
[ 76.413618][ T5823] ? smk_tskacc+0x300/0x370
[ 76.413650][ T5823] ? posix_xattr_acl+0xa9/0xd0
[ 76.413666][ T5823] ? evm_protect_xattr+0x4be/0xb40
[ 76.413681][ T5823] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10
[ 76.413700][ T5823] __vfs_setxattr+0x468/0x4a0
[ 76.413726][ T5823] __vfs_setxattr_noperm+0x12e/0x660
[ 76.413750][ T5823] vfs_setxattr+0x221/0x430
[ 76.413774][ T5823] ? __pfx_vfs_setxattr+0x10/0x10
[ 76.413796][ T5823] ? _raw_spin_unlock+0x28/0x50
[ 76.413814][ T5823] ? dput+0x37/0x2b0
[ 76.413828][ T5823] ovl_get_workdir+0xda0/0x1930
[ 76.413852][ T5823] ? __pfx_ovl_get_workdir+0x10/0x10
[ 76.413873][ T5823] ? ovl_inuse_trylock+0xab/0xf0
[ 76.413890][ T5823] ? do_raw_spin_lock+0x14f/0x370
[ 76.413912][ T5823] ? _raw_spin_unlock+0x28/0x50
[ 76.413928][ T5823] ? ovl_inuse_trylock+0xab/0xf0
[ 76.413946][ T5823] ovl_fill_super+0x12b3/0x3640
[ 76.413974][ T5823] ? __pfx_ovl_fill_super+0x10/0x10
[ 76.413993][ T5823] ? __pfx_lockdep_init_map_type+0x10/0x10
[ 76.414013][ T5823] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 76.414041][ T5823] ? sget_fc+0x960/0xa50
[ 76.414058][ T5823] ? __pfx_set_anon_super_fc+0x10/0x10
[ 76.414075][ T5823] ? __pfx_ovl_fill_super+0x10/0x10
[ 76.414094][ T5823] get_tree_nodev+0xb7/0x140
[ 76.414113][ T5823] vfs_get_tree+0x90/0x2b0
[ 76.414132][ T5823] do_new_mount+0x2be/0xb40
[ 76.414147][ T5823] ? __pfx_do_new_mount+0x10/0x10
[ 76.414163][ T5823] __se_sys_mount+0x2d6/0x3c0
[ 76.414179][ T5823] ? __pfx___se_sys_mount+0x10/0x10
[ 76.414193][ T5823] ? do_syscall_64+0x100/0x230
[ 76.414215][ T5823] ? __x64_sys_mount+0x20/0xc0
[ 76.414229][ T5823] do_syscall_64+0xf3/0x230
[ 76.414250][ T5823] ? clear_bhb_loop+0x35/0x90
[ 76.414276][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 76.414310][ T5823] RIP: 0033:0x7f009f3a3c19
[ 76.414331][ T5823] 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
[ 76.414347][ T5823] RSP: 002b:00007fff31081148 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[pid 5823] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -1 EINVAL (Invalid argument)
[pid 5823] exit_group(0) = ?
[pid 5823] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5823, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=21 /* 0.21 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 5827 attached
, child_tidptr=0x55558534e650) = 5827
[pid 5827] set_robust_list(0x55558534e660, 24) = 0
[pid 5827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5827] setpgid(0, 0) = 0
[pid 5827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5827] write(3, "1000", 4) = 4
[pid 5827] close(3) = 0
[pid 5827] write(1, "executing program\n", 18executing program
) = 18
[pid 5827] memfd_create("syzkaller", 0) = 3
[pid 5827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[ 76.414366][ T5823] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f009f3a3c19
[ 76.414383][ T5823] RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
[ 76.414393][ T5823] RBP: 00007f009f41b5f0 R08: 0000200000000900 R09: 000055558534f4c0
[ 76.414403][ T5823] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff31081170
[ 76.414412][ T5823] R13: 00007fff31081398 R14: 431bde82d7b634db R15: 00007f009f3ec03b
[ 76.414427][ T5823]
[ 76.967083][ T5823] overlayfs: upper fs missing required features.
[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(0x7f0096e00000, 138412032) = 0
[pid 5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5827] close(3) = 0
[pid 5827] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid 5827] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5827] mkdir("./bus", 000) = 0
[pid 5827] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=0, si_stime=15 /* 0.15 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5828 attached
, child_tidptr=0x55558534e650) = 5828
[pid 5828] set_robust_list(0x55558534e660, 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
[pid 5828] write(1, "executing program\n", 18executing program
) = 18
[pid 5828] memfd_create("syzkaller", 0) = 3
[pid 5828] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[ 77.159576][ T5827] overlayfs: workdir and upperdir must reside under the same mount
[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(0x7f0096e00000, 138412032) = 0
[pid 5828] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5828] close(3) = 0
[pid 5828] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5828] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5828] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5828] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=3 /* 0.03 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 5829 attached
[pid 5829] set_robust_list(0x55558534e660, 24
[pid 5822] <... clone resumed>, child_tidptr=0x55558534e650) = 5829
[pid 5829] <... set_robust_list resumed>) = 0
[pid 5829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5829] setpgid(0, 0) = 0
[ 77.343339][ T5828] overlayfs: workdir and upperdir must reside under the same mount
[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
executing program
[pid 5829] write(1, "executing program\n", 18) = 18
[pid 5829] memfd_create("syzkaller", 0) = 3
[pid 5829] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5829] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5829] close(3) = 0
[pid 5829] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5829] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5829] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5829] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=4 /* 0.04 s */, si_stime=10 /* 0.10 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 77.597178][ T5829] 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 5830 attached
, child_tidptr=0x55558534e650) = 5830
[pid 5830] set_robust_list(0x55558534e660, 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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5830] close(3) = 0
[pid 5830] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5830] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5830] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5830] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=0, si_stime=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 77.939941][ 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=0x55558534e650) = 5831
[pid 5831] set_robust_list(0x55558534e660, 24) = 0
[pid 5831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5831] setpgid(0, 0) = 0
[pid 5831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5831] write(3, "1000", 4) = 4
[pid 5831] close(3) = 0
executing program
[pid 5831] write(1, "executing program\n", 18) = 18
[pid 5831] memfd_create("syzkaller", 0) = 3
[pid 5831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5831] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5831] close(3) = 0
[pid 5831] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5831] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5831] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5831] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 78.253484][ 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=0x55558534e650) = 5832
[pid 5832] set_robust_list(0x55558534e660, 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(3) = 0
executing program
[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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5832] close(3) = 0
[pid 5832] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5832] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5832] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5832] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=3 /* 0.03 s */, si_stime=11 /* 0.11 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 78.619750][ T5832] 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 5833 attached
, child_tidptr=0x55558534e650) = 5833
[pid 5833] set_robust_list(0x55558534e660, 24) = 0
[pid 5833] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5833] setpgid(0, 0) = 0
[pid 5833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5833] write(3, "1000", 4) = 4
[pid 5833] close(3) = 0
[pid 5833] write(1, "executing program\n", 18executing program
) = 18
[pid 5833] memfd_create("syzkaller", 0) = 3
[pid 5833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5833] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5833] close(3) = 0
[pid 5833] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5833] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5833] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5833] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -1 EINVAL (Invalid argument)
[pid 5833] exit_group(0) = ?
[pid 5833] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5833, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=12 /* 0.12 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 78.960282][ 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=0x55558534e650) = 5834
[pid 5834] set_robust_list(0x55558534e660, 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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5834] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5834] close(3) = 0
[pid 5834] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5834] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5834] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5834] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=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 5835 attached
, child_tidptr=0x55558534e650) = 5835
[pid 5835] set_robust_list(0x55558534e660, 24) = 0
[ 79.289655][ T5834] overlayfs: workdir and upperdir must reside under the same mount
[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(3) = 0
[pid 5835] write(1, "executing program\n", 18executing program
) = 18
[pid 5835] memfd_create("syzkaller", 0) = 3
[pid 5835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5835] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5835] close(3) = 0
[pid 5835] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5835] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5835] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5835] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5836 attached
, child_tidptr=0x55558534e650) = 5836
[ 79.606901][ T5835] overlayfs: workdir and upperdir must reside under the same mount
[pid 5836] set_robust_list(0x55558534e660, 24) = 0
[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
executing program
[pid 5836] write(1, "executing program\n", 18) = 18
[pid 5836] memfd_create("syzkaller", 0) = 3
[pid 5836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5836] close(3) = 0
[pid 5836] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5836] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5836] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5836] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=2 /* 0.02 s */, si_stime=12 /* 0.12 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
[ 79.911564][ T5836] 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 5837 attached
, child_tidptr=0x55558534e650) = 5837
[pid 5837] set_robust_list(0x55558534e660, 24) = 0
[pid 5837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5837] setpgid(0, 0) = 0
[pid 5837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5837] write(3, "1000", 4) = 4
[pid 5837] close(3) = 0
executing program
[pid 5837] write(1, "executing program\n", 18) = 18
[pid 5837] memfd_create("syzkaller", 0) = 3
[pid 5837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5837] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5837] close(3) = 0
[pid 5837] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5837] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5837] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5837] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=2 /* 0.02 s */, si_stime=12 /* 0.12 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 80.252997][ T5837] 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 5838 attached
, child_tidptr=0x55558534e650) = 5838
[pid 5838] set_robust_list(0x55558534e660, 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
[pid 5838] write(1, "executing program\n", 18executing program
) = 18
[pid 5838] memfd_create("syzkaller", 0) = 3
[pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5838] close(3) = 0
[pid 5838] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5838] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5838] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5838] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=12 /* 0.12 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 80.550205][ T5838] 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 5839 attached
, child_tidptr=0x55558534e650) = 5839
[pid 5839] set_robust_list(0x55558534e660, 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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5839] close(3) = 0
[pid 5839] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5839] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5839] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5839] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=1 /* 0.01 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 5840 attached
, child_tidptr=0x55558534e650) = 5840
[ 80.894832][ T5839] overlayfs: workdir and upperdir must reside under the same mount
[pid 5840] set_robust_list(0x55558534e660, 24) = 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
[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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5840] close(3) = 0
[pid 5840] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5840] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5840] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5840] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 81.217965][ 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=0x55558534e650) = 5841
[pid 5841] set_robust_list(0x55558534e660, 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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5841] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5841] close(3) = 0
[pid 5841] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5841] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5841] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5841] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=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 5842 attached
, child_tidptr=0x55558534e650) = 5842
[ 81.537077][ T5841] overlayfs: workdir and upperdir must reside under the same mount
[pid 5842] set_robust_list(0x55558534e660, 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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5842] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5842] close(3) = 0
[pid 5842] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5842] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5842] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5842] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=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 5843 attached
, child_tidptr=0x55558534e650) = 5843
[pid 5843] set_robust_list(0x55558534e660, 24) = 0
[ 81.867469][ T5842] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5843] close(3) = 0
[pid 5843] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5843] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5843] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5843] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=3 /* 0.03 s */, si_stime=9 /* 0.09 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=0x55558534e650) = 5844
[pid 5844] set_robust_list(0x55558534e660, 24) = 0
[pid 5844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 82.169951][ T5843] overlayfs: workdir and upperdir must reside under the same mount
[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
[pid 5844] write(1, "executing program\n", 18executing program
) = 18
[pid 5844] memfd_create("syzkaller", 0) = 3
[pid 5844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5844] close(3) = 0
[pid 5844] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5844] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5844] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5844] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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 */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 82.514235][ T5844] 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 5845 attached
, child_tidptr=0x55558534e650) = 5845
[pid 5845] set_robust_list(0x55558534e660, 24) = 0
[pid 5845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5845] setpgid(0, 0) = 0
[pid 5845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5845] write(3, "1000", 4) = 4
[pid 5845] close(3) = 0
executing program
[pid 5845] write(1, "executing program\n", 18) = 18
[pid 5845] memfd_create("syzkaller", 0) = 3
[pid 5845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5845] close(3) = 0
[pid 5845] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5845] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5845] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5845] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -1 EINVAL (Invalid argument)
[pid 5845] exit_group(0) = ?
[pid 5845] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5845, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=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 5846 attached
, child_tidptr=0x55558534e650) = 5846
[ 82.884058][ T5845] overlayfs: workdir and upperdir must reside under the same mount
[pid 5846] set_robust_list(0x55558534e660, 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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5846] close(3) = 0
[pid 5846] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5846] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5846] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5846] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=12 /* 0.12 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 83.213034][ 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=0x55558534e650) = 5847
[pid 5847] set_robust_list(0x55558534e660, 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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5847] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5847] close(3) = 0
[pid 5847] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5847] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5847] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5847] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=2 /* 0.02 s */, si_stime=12 /* 0.12 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 83.535477][ 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=0x55558534e650) = 5848
[pid 5848] set_robust_list(0x55558534e660, 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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5848] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5848] close(3) = 0
[pid 5848] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5848] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5848] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5848] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -1 EINVAL (Invalid argument)
[pid 5848] exit_group(0) = ?
[pid 5848] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5848, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=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 5849 attached
, child_tidptr=0x55558534e650) = 5849
[pid 5849] set_robust_list(0x55558534e660, 24) = 0
[pid 5849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 83.849431][ T5848] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5849] close(3) = 0
[pid 5849] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5849] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5849] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5849] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=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 5850 attached
, child_tidptr=0x55558534e650) = 5850
[ 84.163198][ T5849] overlayfs: workdir and upperdir must reside under the same mount
[pid 5850] set_robust_list(0x55558534e660, 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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5850] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5850] close(3) = 0
[pid 5850] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5850] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5850] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5850] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=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 5851 attached
, child_tidptr=0x55558534e650) = 5851
[pid 5851] set_robust_list(0x55558534e660, 24) = 0
[ 84.520257][ T5850] overlayfs: workdir and upperdir must reside under the same mount
[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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5851] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5851] close(3) = 0
[pid 5851] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5851] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5851] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5851] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
[ 84.832051][ T5851] 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 5852 attached
, child_tidptr=0x55558534e650) = 5852
[pid 5852] set_robust_list(0x55558534e660, 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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5852] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5852] close(3) = 0
[pid 5852] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5852] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5852] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5852] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -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=2 /* 0.02 s */, si_stime=13 /* 0.13 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 85.176498][ T5852] 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 5853 attached
, child_tidptr=0x55558534e650) = 5853
[pid 5853] set_robust_list(0x55558534e660, 24) = 0
[pid 5853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5853] setpgid(0, 0) = 0
[pid 5853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5853] write(3, "1000", 4) = 4
[pid 5853] close(3) = 0
[pid 5853] write(1, "executing program\n", 18executing program
) = 18
[pid 5853] memfd_create("syzkaller", 0) = 3
[pid 5853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0096e00000
[pid 5853] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216
[pid 5853] munmap(0x7f0096e00000, 138412032) = 0
[pid 5853] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5853] close(3) = 0
[pid 5853] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists)
[pid 5853] mkdirat(AT_FDCWD, "./file1", 000) = -1 EEXIST (File exists)
[pid 5853] mkdir("./bus", 000) = -1 EEXIST (File exists)
[pid 5853] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,volatile,") = -1 EINVAL (Invalid argument)
[pid 5853] exit_group(0) = ?
[pid 5853] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5853, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[ 85.497441][ T5853] 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 5854 attached
, child_tidptr=0x55558534e650) = 5854
[pid 5854] set_robust_list(0x55558534e660, 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) = 0x7f0096e00000
[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(0x7f0096e00000, 138412032) = 0
[pid 5854] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5854] close(3) = 0