./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3535704385 <...> Warning: Permanently added '10.128.1.8' (ED25519) to the list of known hosts. execve("./syz-executor3535704385", ["./syz-executor3535704385"], 0x7fff08f92460 /* 10 vars */) = 0 brk(NULL) = 0x55555c5cf000 brk(0x55555c5cfe00) = 0x55555c5cfe00 arch_prctl(ARCH_SET_FS, 0x55555c5cf480) = 0 set_tid_address(0x55555c5cf750) = 5819 set_robust_list(0x55555c5cf760, 24) = 0 rseq(0x55555c5cfda0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3535704385", 4096) = 28 getrandom("\x6f\xdd\xcc\xdc\xb2\x51\xed\x61", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555c5cfe00 brk(0x55555c5f0e00) = 0x55555c5f0e00 brk(0x55555c5f1000) = 0x55555c5f1000 mprotect(0x7f4624b65000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f4624ab7a50, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f4624ac0660}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f4624ab7a50, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f4624ac0660}, NULL, 8) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5821 attached , child_tidptr=0x55555c5cf750) = 5821 [pid 5821] set_robust_list(0x55555c5cf760, 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) = 0x7f461c600000 [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(0x7f461c600000, 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 [ 62.129408][ T5821] loop0: detected capacity change from 0 to 32768 [ 62.171346][ T5821] ======================================================= [ 62.171346][ T5821] WARNING: The mand mount option has been deprecated and [ 62.171346][ T5821] and is ignored by this kernel. Remove the mand [ 62.171346][ T5821] option from the mount to silence this warning. [ 62.171346][ T5821] ======================================================= [pid 5821] mount("/dev/loop0", "./file1", "ocfs2", MS_SYNCHRONOUS|MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME|MS_STRICTATIME, "acl,heartbeat=none,errors=remount-ro,coherency=full,preferred_slot=00000000000000000001,localflocks,"...) = 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) [ 62.223565][ T5821] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [pid 5821] mkdir("./file0", 0777) = 0 [pid 5821] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5821] mkdir("./file2", 0777) = 0 [pid 5821] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5821] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [ 62.302788][ T5821] overlayfs: upper fs does not support tmpfile. [ 62.311834][ T5821] overlayfs: upper fs does not support RENAME_WHITEOUT. [ 62.319421][ T5821] [ 62.321770][ T5821] ====================================================== [ 62.328768][ T5821] WARNING: possible circular locking dependency detected [ 62.335773][ T5821] 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 Not tainted [ 62.342862][ T5821] ------------------------------------------------------ [ 62.349869][ T5821] syz-executor353/5821 is trying to acquire lock: [ 62.356297][ T5821] ffff88807490c2c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x132/0x2840 [ 62.369783][ T5821] [ 62.369783][ T5821] but task is already holding lock: [ 62.377155][ T5821] ffff8880749186f8 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x633/0x1930 [ 62.386637][ T5821] [ 62.386637][ T5821] which lock already depends on the new lock. [ 62.386637][ T5821] [ 62.397023][ T5821] [ 62.397023][ T5821] the existing dependency chain (in reverse order) is: [ 62.406018][ T5821] [ 62.406018][ T5821] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}: [ 62.413818][ T5821] lock_acquire+0x1ed/0x550 [ 62.418822][ T5821] down_write+0x99/0x220 [ 62.423578][ T5821] ocfs2_xattr_set_handle+0x539/0xa10 [ 62.429451][ T5821] ocfs2_init_security_set+0xbd/0xd0 [ 62.435247][ T5821] ocfs2_mknod+0x1ccf/0x2b30 [ 62.440344][ T5821] ocfs2_mkdir+0x1ab/0x470 [ 62.445274][ T5821] vfs_mkdir+0x2f9/0x4f0 [ 62.450021][ T5821] do_mkdirat+0x264/0x3a0 [ 62.454854][ T5821] __x64_sys_mkdir+0x6c/0x80 [ 62.459952][ T5821] do_syscall_64+0xf3/0x230 [ 62.464959][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 62.471355][ T5821] [ 62.471355][ T5821] -> #3 (jbd2_handle){.+.+}-{0:0}: [ 62.478637][ T5821] lock_acquire+0x1ed/0x550 [ 62.483646][ T5821] start_this_handle+0x1eb4/0x2110 [ 62.489262][ T5821] jbd2__journal_start+0x2da/0x5d0 [ 62.494877][ T5821] jbd2_journal_start+0x29/0x40 [ 62.500228][ T5821] ocfs2_start_trans+0x3c9/0x700 [ 62.505680][ T5821] ocfs2_reserve_suballoc_bits+0x9f6/0x4e70 [ 62.512098][ T5821] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0 [ 62.518933][ T5821] ocfs2_mknod+0x143a/0x2b30 [ 62.524026][ T5821] ocfs2_mkdir+0x1ab/0x470 [ 62.528942][ T5821] vfs_mkdir+0x2f9/0x4f0 [ 62.533694][ T5821] do_mkdirat+0x264/0x3a0 [ 62.538527][ T5821] __x64_sys_mkdir+0x6c/0x80 [ 62.543641][ T5821] do_syscall_64+0xf3/0x230 [ 62.548653][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 62.555050][ T5821] [ 62.555050][ T5821] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: [ 62.563544][ T5821] lock_acquire+0x1ed/0x550 [ 62.568552][ T5821] down_read+0xb1/0xa40 [ 62.573235][ T5821] ocfs2_start_trans+0x3be/0x700 [ 62.578676][ T5821] ocfs2_reserve_suballoc_bits+0x9f6/0x4e70 [ 62.585073][ T5821] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0 [ 62.591900][ T5821] ocfs2_mknod+0x143a/0x2b30 [ 62.596993][ T5821] ocfs2_mkdir+0x1ab/0x470 [ 62.601910][ T5821] vfs_mkdir+0x2f9/0x4f0 [ 62.606654][ T5821] do_mkdirat+0x264/0x3a0 [ 62.611501][ T5821] __x64_sys_mkdir+0x6c/0x80 [ 62.616610][ T5821] do_syscall_64+0xf3/0x230 [ 62.621616][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 62.628013][ T5821] [ 62.628013][ T5821] -> #1 (sb_internal#2){.+.+}-{0:0}: [ 62.635472][ T5821] lock_acquire+0x1ed/0x550 [ 62.640477][ T5821] ocfs2_start_trans+0x2b9/0x700 [ 62.645917][ T5821] ocfs2_mknod+0x150c/0x2b30 [ 62.651007][ T5821] ocfs2_mkdir+0x1ab/0x470 [ 62.655925][ T5821] vfs_mkdir+0x2f9/0x4f0 [ 62.660667][ T5821] do_mkdirat+0x264/0x3a0 [ 62.665497][ T5821] __x64_sys_mkdir+0x6c/0x80 [ 62.670588][ T5821] do_syscall_64+0xf3/0x230 [ 62.675596][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 62.681992][ T5821] [ 62.681992][ T5821] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}: [ 62.692507][ T5821] validate_chain+0x18ef/0x5920 [ 62.697865][ T5821] __lock_acquire+0x1397/0x2100 [ 62.703217][ T5821] lock_acquire+0x1ed/0x550 [ 62.708223][ T5821] down_write+0x99/0x220 [ 62.712968][ T5821] ocfs2_reserve_local_alloc_bits+0x132/0x2840 [ 62.719626][ T5821] ocfs2_reserve_clusters_with_limit+0x1b8/0xb60 [ 62.726458][ T5821] ocfs2_init_xattr_set_ctxt+0x420/0x8e0 [ 62.732590][ T5821] ocfs2_xattr_set+0xf4e/0x1930 [ 62.737947][ T5821] __vfs_setxattr+0x468/0x4a0 [ 62.743144][ T5821] __vfs_setxattr_noperm+0x12e/0x660 [ 62.748935][ T5821] vfs_setxattr+0x221/0x430 [ 62.753947][ T5821] ovl_get_workdir+0xd90/0x1920 [ 62.759301][ T5821] ovl_fill_super+0x12a8/0x3560 [ 62.764654][ T5821] get_tree_nodev+0xb7/0x140 [ 62.769749][ T5821] vfs_get_tree+0x90/0x2b0 [ 62.774680][ T5821] do_new_mount+0x2be/0xb40 [ 62.779688][ T5821] __se_sys_mount+0x2d6/0x3c0 [ 62.784863][ T5821] do_syscall_64+0xf3/0x230 [ 62.789869][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 62.796270][ T5821] [ 62.796270][ T5821] other info that might help us debug this: [ 62.796270][ T5821] [ 62.806478][ T5821] Chain exists of: [ 62.806478][ T5821] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5 --> jbd2_handle --> &oi->ip_xattr_sem [ 62.806478][ T5821] [ 62.822190][ T5821] Possible unsafe locking scenario: [ 62.822190][ T5821] [ 62.829627][ T5821] CPU0 CPU1 [ 62.834972][ T5821] ---- ---- [ 62.840319][ T5821] lock(&oi->ip_xattr_sem); [ 62.844892][ T5821] lock(jbd2_handle); [ 62.851462][ T5821] lock(&oi->ip_xattr_sem); [ 62.858554][ T5821] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); [ 62.865823][ T5821] [ 62.865823][ T5821] *** DEADLOCK *** [ 62.865823][ T5821] [ 62.873947][ T5821] 4 locks held by syz-executor353/5821: [ 62.879470][ T5821] #0: ffff888035e160e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0 [ 62.889562][ T5821] #1: ffff88807a4b2420 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 [ 62.898707][ T5821] #2: ffff8880749189c0 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x1e1/0x430 [ 62.909131][ T5821] #3: ffff8880749186f8 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x633/0x1930 [ 62.919032][ T5821] [ 62.919032][ T5821] stack backtrace: [ 62.924911][ T5821] CPU: 1 UID: 0 PID: 5821 Comm: syz-executor353 Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 [ 62.935998][ T5821] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 62.946133][ T5821] Call Trace: [ 62.949424][ T5821] [ 62.952341][ T5821] dump_stack_lvl+0x241/0x360 [ 62.957012][ T5821] ? __pfx_dump_stack_lvl+0x10/0x10 [ 62.962198][ T5821] ? __pfx__printk+0x10/0x10 [ 62.966772][ T5821] print_circular_bug+0x13a/0x1b0 [ 62.971782][ T5821] check_noncircular+0x36a/0x4a0 [ 62.976705][ T5821] ? __pfx_check_noncircular+0x10/0x10 [ 62.982147][ T5821] ? lockdep_lock+0x123/0x2b0 [ 62.986808][ T5821] validate_chain+0x18ef/0x5920 [ 62.991641][ T5821] ? __pfx_validate_chain+0x10/0x10 [ 62.996827][ T5821] ? __pfx_validate_chain+0x10/0x10 [ 63.002011][ T5821] ? mark_lock+0x9a/0x360 [ 63.006323][ T5821] ? ocfs2_get_system_file_inode+0x1d4/0x7b0 [ 63.012284][ T5821] ? __pfx_lock_release+0x10/0x10 [ 63.017291][ T5821] ? mark_lock+0x9a/0x360 [ 63.021605][ T5821] __lock_acquire+0x1397/0x2100 [ 63.026440][ T5821] lock_acquire+0x1ed/0x550 [ 63.030922][ T5821] ? ocfs2_reserve_local_alloc_bits+0x132/0x2840 [ 63.037234][ T5821] ? __pfx_lock_acquire+0x10/0x10 [ 63.042245][ T5821] ? __pfx___might_resched+0x10/0x10 [ 63.047517][ T5821] ? __pfx_ocfs2_get_system_file_inode+0x10/0x10 [ 63.053827][ T5821] ? __pfx_validate_chain+0x10/0x10 [ 63.059011][ T5821] down_write+0x99/0x220 [ 63.063239][ T5821] ? ocfs2_reserve_local_alloc_bits+0x132/0x2840 [ 63.069549][ T5821] ? __pfx_down_write+0x10/0x10 [ 63.074386][ T5821] ? mark_lock+0x9a/0x360 [ 63.078694][ T5821] ocfs2_reserve_local_alloc_bits+0x132/0x2840 [ 63.084833][ T5821] ? mark_lock+0x9a/0x360 [ 63.089143][ T5821] ? __lock_acquire+0x1397/0x2100 [ 63.094148][ T5821] ? __pfx_ocfs2_reserve_local_alloc_bits+0x10/0x10 [ 63.100721][ T5821] ? __pfx_lock_acquire+0x10/0x10 [ 63.105732][ T5821] ? ocfs2_alloc_should_use_local+0x155/0x320 [ 63.111783][ T5821] ? __pfx_lock_release+0x10/0x10 [ 63.116790][ T5821] ? do_raw_spin_lock+0x14f/0x370 [ 63.121807][ T5821] ? do_raw_spin_unlock+0x13c/0x8b0 [ 63.126992][ T5821] ? _raw_spin_unlock+0x28/0x50 [ 63.131824][ T5821] ? ocfs2_alloc_should_use_local+0x155/0x320 [ 63.137880][ T5821] ocfs2_reserve_clusters_with_limit+0x1b8/0xb60 [ 63.144194][ T5821] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10 [ 63.151027][ T5821] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10 [ 63.157166][ T5821] ? ocfs2_xattr_set+0xf00/0x1930 [ 63.162176][ T5821] ocfs2_init_xattr_set_ctxt+0x420/0x8e0 [ 63.167793][ T5821] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10 [ 63.173933][ T5821] ? up_write+0x1a9/0x590 [ 63.178248][ T5821] ? __pfx_ocfs2_truncate_log_needs_flush+0x10/0x10 [ 63.184821][ T5821] ? __pfx_up_write+0x10/0x10 [ 63.189477][ T5821] ? __kmalloc_cache_noprof+0x243/0x390 [ 63.195007][ T5821] ? ocfs2_xattr_set+0x4d5/0x1930 [ 63.200026][ T5821] ocfs2_xattr_set+0xf4e/0x1930 [ 63.204867][ T5821] ? __pfx_ocfs2_xattr_set+0x10/0x10 [ 63.210135][ T5821] ? _prb_read_valid+0xa39/0xac0 [ 63.215062][ T5821] ? mark_lock+0x9a/0x360 [ 63.219383][ T5821] ? smk_tskacc+0x300/0x370 [ 63.223870][ T5821] ? posix_xattr_acl+0xa9/0xd0 [ 63.228614][ T5821] ? evm_protect_xattr+0x4be/0xb30 [ 63.233708][ T5821] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10 [ 63.239669][ T5821] __vfs_setxattr+0x468/0x4a0 [ 63.244335][ T5821] __vfs_setxattr_noperm+0x12e/0x660 [ 63.249606][ T5821] vfs_setxattr+0x221/0x430 [ 63.254098][ T5821] ? __pfx_vfs_setxattr+0x10/0x10 [ 63.259103][ T5821] ? _raw_spin_unlock+0x28/0x50 [ 63.263938][ T5821] ? dput+0x37/0x2b0 [ 63.267810][ T5821] ovl_get_workdir+0xd90/0x1920 [ 63.272650][ T5821] ? __pfx_ovl_get_workdir+0x10/0x10 [ 63.277924][ T5821] ? ovl_inuse_trylock+0xab/0xf0 [ 63.282847][ T5821] ? do_raw_spin_lock+0x14f/0x370 [ 63.287857][ T5821] ? _raw_spin_unlock+0x28/0x50 [ 63.292690][ T5821] ? ovl_inuse_trylock+0xab/0xf0 [ 63.297612][ T5821] ovl_fill_super+0x12a8/0x3560 [ 63.302459][ T5821] ? __pfx___mutex_trylock_common+0x10/0x10 [ 63.308337][ T5821] ? shrinker_register+0x118/0x230 [ 63.313439][ T5821] ? __pfx_lock_release+0x10/0x10 [ 63.318447][ T5821] ? __pfx_ovl_fill_super+0x10/0x10 [ 63.323630][ T5821] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 63.329423][ T5821] ? __pfx___mutex_lock+0x10/0x10 [ 63.334431][ T5821] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 63.340401][ T5821] ? sget_fc+0x909/0x9c0 [ 63.344645][ T5821] ? __pfx_set_anon_super_fc+0x10/0x10 [ 63.350083][ T5821] ? __pfx_ovl_fill_super+0x10/0x10 [ 63.355297][ T5821] get_tree_nodev+0xb7/0x140 [ 63.359870][ T5821] vfs_get_tree+0x90/0x2b0 [ 63.364272][ T5821] do_new_mount+0x2be/0xb40 [ 63.368761][ T5821] ? __pfx_do_new_mount+0x10/0x10 [ 63.373777][ T5821] __se_sys_mount+0x2d6/0x3c0 [ 63.378434][ T5821] ? __pfx___se_sys_mount+0x10/0x10 [ 63.383619][ T5821] ? do_syscall_64+0x100/0x230 [ 63.388377][ T5821] ? __x64_sys_mount+0x20/0xc0 [ 63.393116][ T5821] do_syscall_64+0xf3/0x230 [ 63.397605][ T5821] ? clear_bhb_loop+0x35/0x90 [ 63.402270][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 63.408146][ T5821] RIP: 0033:0x7f4624aed719 [ 63.412556][ 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 [ 63.432147][ T5821] RSP: 002b:00007ffdb31ffa78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 63.440546][ T5821] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4624aed719 [ 63.448502][ T5821] RDX: 0000000020000000 RSI: 0000000020000080 RDI: 0000000000000000 [pid 5821] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5821] memfd_create("syzkaller", 0) = 4 [pid 5821] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 63.456458][ T5821] RBP: 0000000000000000 R08: 0000000020000140 R09: 00007ffdb31ffab0 [ 63.464411][ T5821] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdb31ffab0 [ 63.472365][ T5821] R13: 00007ffdb31ffd38 R14: 431bde82d7b634db R15: 00007f4624b3603b [ 63.480333][ T5821] [ 63.484501][ T5821] overlayfs: upper fs missing required features. [pid 5821] write(4, "\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(0x7f461c600000, 138412032) = 0 [pid 5821] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5821] close(4) = 0 [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=7 /* 0.07 s */, si_stime=24 /* 0.24 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5824 attached , child_tidptr=0x55555c5cf750) = 5824 [pid 5824] set_robust_list(0x55555c5cf760, 24) = 0 [pid 5824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5824] setpgid(0, 0) = 0 [pid 5824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5824] write(3, "1000", 4) = 4 executing program [pid 5824] close(3) = 0 [pid 5824] write(1, "executing program\n", 18) = 18 [pid 5824] memfd_create("syzkaller", 0) = 3 [pid 5824] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [pid 5824] 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 5824] munmap(0x7f461c600000, 138412032) = 0 [pid 5824] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5824] close(3) = 0 [pid 5824] mkdir("./file0", 0777) = 0 [pid 5824] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5824] mkdir("./file2", 0777) = 0 [pid 5824] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5824] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5824] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = 0 [pid 5824] memfd_create("syzkaller", 0) = 3 [pid 5824] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [pid 5824] 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 5824] munmap(0x7f461c600000, 138412032) = 0 [pid 5824] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5824] close(3) = 0 [pid 5824] exit_group(0) = ? [pid 5824] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5824, si_uid=0, si_status=0, si_utime=8 /* 0.08 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, child_tidptr=0x55555c5cf750) = 5825 ./strace-static-x86_64: Process 5825 attached [pid 5825] set_robust_list(0x55555c5cf760, 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) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5825] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5825] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5825] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5825] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5825] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5825] memfd_create("syzkaller", 0) = 3 [pid 5825] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 64.258888][ T5825] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5825] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5825] close(3) = 0 [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=5 /* 0.05 s */, si_stime=17 /* 0.17 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5826 attached , child_tidptr=0x55555c5cf750) = 5826 [pid 5826] set_robust_list(0x55555c5cf760, 24) = 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 [pid 5826] write(1, "executing program\n", 18executing program ) = 18 [pid 5826] memfd_create("syzkaller", 0) = 3 [pid 5826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5826] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5826] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5826] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5826] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5826] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5826] memfd_create("syzkaller", 0) = 3 [pid 5826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 64.662115][ T5826] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5826] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5826] close(3) = 0 [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=6 /* 0.06 s */, si_stime=16 /* 0.16 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5827 attached , child_tidptr=0x55555c5cf750) = 5827 [pid 5827] set_robust_list(0x55555c5cf760, 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 executing program [pid 5827] write(1, "executing program\n", 18) = 18 [pid 5827] memfd_create("syzkaller", 0) = 3 [pid 5827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5827] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5827] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5827] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5827] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5827] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5827] memfd_create("syzkaller", 0) = 3 [pid 5827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 65.002489][ T5827] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5827] close(3) = 0 [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=6 /* 0.06 s */, si_stime=18 /* 0.18 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=0x55555c5cf750) = 5828 [pid 5828] set_robust_list(0x55555c5cf760, 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) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5828] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5828] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5828] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5828] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5828] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5828] memfd_create("syzkaller", 0) = 3 [pid 5828] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 65.420501][ T5828] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5828] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5828] close(3) = 0 [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=6 /* 0.06 s */, si_stime=16 /* 0.16 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5829 attached , child_tidptr=0x55555c5cf750) = 5829 [pid 5829] set_robust_list(0x55555c5cf760, 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 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) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5829] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5829] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5829] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5829] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5829] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5829] memfd_create("syzkaller", 0) = 3 [pid 5829] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 65.828603][ T5829] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5829] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5829] close(3) = 0 [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=5 /* 0.05 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555c5cf750) = 5830 ./strace-static-x86_64: Process 5830 attached [pid 5830] set_robust_list(0x55555c5cf760, 24) = 0 [pid 5830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5830] setpgid(0, 0) = 0 [pid 5830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5830] write(3, "1000", 4) = 4 [pid 5830] close(3) = 0 [pid 5830] write(1, "executing program\n", 18executing program ) = 18 [pid 5830] memfd_create("syzkaller", 0) = 3 [pid 5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5830] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5830] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5830] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5830] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5830] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5830] memfd_create("syzkaller", 0) = 3 [pid 5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 66.192699][ T5830] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5830] close(3) = 0 [pid 5830] exit_group(0) = ? [pid 5830] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5830, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=17 /* 0.17 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5831 attached , child_tidptr=0x55555c5cf750) = 5831 [pid 5831] set_robust_list(0x55555c5cf760, 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(3executing program ) = 0 [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) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5831] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5831] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5831] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5831] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5831] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5831] memfd_create("syzkaller", 0) = 3 [pid 5831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 66.574488][ T5831] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5831] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5831] close(3) = 0 [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=7 /* 0.07 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 5832 attached , child_tidptr=0x55555c5cf750) = 5832 [pid 5832] set_robust_list(0x55555c5cf760, 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 [pid 5832] write(1, "executing program\n", 18executing program ) = 18 [pid 5832] memfd_create("syzkaller", 0) = 3 [pid 5832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5832] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5832] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5832] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5832] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5832] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5832] memfd_create("syzkaller", 0) = 3 [pid 5832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 67.011542][ T5832] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5832] close(3) = 0 [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=19 /* 0.19 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5833 attached , child_tidptr=0x55555c5cf750) = 5833 [pid 5833] set_robust_list(0x55555c5cf760, 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) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5833] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5833] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5833] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5833] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5833] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5833] memfd_create("syzkaller", 0) = 3 [pid 5833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 67.487183][ T5833] overlay: filesystem on ./file0 not supported as upperdir [pid 5833] write(3, "\x02\x02\x02\x02\x02\x02\x02\x02\x74\x68\x69\x73\x20\x69\x73\x20\x61\x6e\x20\x6f\x63\x66\x73\x32\x20\x76\x6f\x6c\x75\x6d\x65\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02"..., 16777216) = 16777216 [pid 5833] munmap(0x7f461c600000, 138412032) = 0 [pid 5833] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5833] close(3) = 0 [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=6 /* 0.06 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 5834 attached , child_tidptr=0x55555c5cf750) = 5834 [pid 5834] set_robust_list(0x55555c5cf760, 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) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5834] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5834] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5834] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5834] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5834] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5834] memfd_create("syzkaller", 0) = 3 [pid 5834] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 67.960360][ T5834] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5834] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5834] close(3) = 0 [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=6 /* 0.06 s */, si_stime=15 /* 0.15 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=0x55555c5cf750) = 5835 [pid 5835] set_robust_list(0x55555c5cf760, 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(3) = 0 executing program [pid 5835] write(1, "executing program\n", 18) = 18 [pid 5835] memfd_create("syzkaller", 0) = 3 [pid 5835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5835] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5835] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5835] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5835] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5835] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5835] memfd_create("syzkaller", 0) = 3 [pid 5835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 68.356669][ T5835] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5835] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5835] close(3) = 0 [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=7 /* 0.07 s */, si_stime=13 /* 0.13 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555c5cf750) = 5836 ./strace-static-x86_64: Process 5836 attached [pid 5836] set_robust_list(0x55555c5cf760, 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) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5836] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5836] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5836] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5836] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5836] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5836] memfd_create("syzkaller", 0) = 3 [pid 5836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 68.767955][ T5836] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5836] close(3) = 0 [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=6 /* 0.06 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 5837 attached , child_tidptr=0x55555c5cf750) = 5837 [pid 5837] set_robust_list(0x55555c5cf760, 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) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5837] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5837] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5837] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5837] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5837] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5837] memfd_create("syzkaller", 0) = 3 [pid 5837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 69.210912][ T5837] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5837] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5837] close(3) = 0 [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=5 /* 0.05 s */, si_stime=18 /* 0.18 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=0x55555c5cf750) = 5838 [pid 5838] set_robust_list(0x55555c5cf760, 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) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5838] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5838] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5838] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5838] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5838] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5838] memfd_create("syzkaller", 0) = 3 [pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 69.623808][ T5838] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5838] close(3) = 0 [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=5 /* 0.05 s */, si_stime=15 /* 0.15 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 5839 attached , child_tidptr=0x55555c5cf750) = 5839 [pid 5839] set_robust_list(0x55555c5cf760, 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 [pid 5839] write(1, "executing program\n", 18executing program ) = 18 [pid 5839] memfd_create("syzkaller", 0) = 3 [pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [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(0x7f461c600000, 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", 0777) = -1 EEXIST (File exists) [pid 5839] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5839] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5839] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5839] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5839] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5839] memfd_create("syzkaller", 0) = 3 [pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 69.964768][ T5839] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5839] close(3) = 0 [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=6 /* 0.06 s */, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5840 attached , child_tidptr=0x55555c5cf750) = 5840 [pid 5840] set_robust_list(0x55555c5cf760, 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 executing program [pid 5840] write(1, "executing program\n", 18) = 18 [pid 5840] memfd_create("syzkaller", 0) = 3 [pid 5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [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(0x7f461c600000, 138412032) = 0 [pid 5840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5840] close(3) = 0 [pid 5840] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5840] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5840] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5840] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5840] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5840] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5840] memfd_create("syzkaller", 0) = 3 [pid 5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 70.351390][ T5840] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5840] close(3) = 0 [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=3 /* 0.03 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5841 attached , child_tidptr=0x55555c5cf750) = 5841 [pid 5841] set_robust_list(0x55555c5cf760, 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 [pid 5841] write(1, "executing program\n", 18executing program ) = 18 [pid 5841] memfd_create("syzkaller", 0) = 3 [pid 5841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [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(0x7f461c600000, 138412032) = 0 [pid 5841] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5841] close(3) = 0 [pid 5841] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5841] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5841] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5841] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5841] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5841] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5841] memfd_create("syzkaller", 0) = 3 [pid 5841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 70.835994][ T5841] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5841] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5841] close(3) = 0 [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=6 /* 0.06 s */, si_stime=18 /* 0.18 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=0x55555c5cf750) = 5842 [pid 5842] set_robust_list(0x55555c5cf760, 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) = 0x7f461c600000 [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(0x7f461c600000, 138412032) = 0 [pid 5842] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5842] close(3) = 0 [pid 5842] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5842] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5842] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5842] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5842] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5842] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5842] memfd_create("syzkaller", 0) = 3 [pid 5842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 71.299497][ T5842] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5842] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5842] close(3) = 0 [pid 5842] exit_group(0) = ? [pid 5842] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5842, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555c5cf750) = 5843 ./strace-static-x86_64: Process 5843 attached [pid 5843] set_robust_list(0x55555c5cf760, 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(3executing program ) = 0 [pid 5843] write(1, "executing program\n", 18) = 18 [pid 5843] memfd_create("syzkaller", 0) = 3 [pid 5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [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(0x7f461c600000, 138412032) = 0 [pid 5843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5843] close(3) = 0 [pid 5843] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5843] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5843] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5843] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5843] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5843] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5843] memfd_create("syzkaller", 0) = 3 [pid 5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 71.724848][ T5843] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5843] close(3) = 0 [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=6 /* 0.06 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, child_tidptr=0x55555c5cf750) = 5844 ./strace-static-x86_64: Process 5844 attached [pid 5844] set_robust_list(0x55555c5cf760, 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) = 0x7f461c600000 [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(0x7f461c600000, 138412032) = 0 [pid 5844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5844] close(3) = 0 [pid 5844] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5844] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5844] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 5844] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5844] ioctl(-1, IMADDTIMER, 0) = -1 EBADF (Bad file descriptor) [pid 5844] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) [pid 5844] memfd_create("syzkaller", 0) = 3 [pid 5844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f461c600000 [ 72.130481][ T5844] overlay: filesystem on ./file0 not supported as upperdir [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(0x7f461c600000, 138412032) = 0 [pid 5844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5844] close(3) = 0 [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=5 /* 0.05 s */, si_stime=16 /* 0.16 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=0x55555c5cf750) = 5845 [pid 5845] set_robust_list(0x55555c5cf760, 24) = 0 [pid 5845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0