./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1003472221 <...> Warning: Permanently added '10.128.0.41' (ED25519) to the list of known hosts. execve("./syz-executor1003472221", ["./syz-executor1003472221"], 0x7ffe74fa2040 /* 10 vars */) = 0 brk(NULL) = 0x555593019000 brk(0x555593019e00) = 0x555593019e00 arch_prctl(ARCH_SET_FS, 0x555593019480) = 0 set_tid_address(0x555593019750) = 5824 set_robust_list(0x555593019760, 24) = 0 rseq(0x555593019da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1003472221", 4096) = 28 getrandom("\x30\x54\x90\xf1\xfa\x96\xab\xf7", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555593019e00 brk(0x55559303ae00) = 0x55559303ae00 brk(0x55559303b000) = 0x55559303b000 mprotect(0x7fd0762ff000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7fd076254060, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fd07625c0d0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7fd076254060, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fd07625c0d0}, NULL, 8) = 0 write(1, "executing program\n", 18executing program ) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd06de00000 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 munmap(0x7fd06de00000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 [ 88.425950][ T5824] loop0: detected capacity change from 0 to 32768 mkdir("./file1", 0777) = 0 mount("/dev/loop0", "./file1", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "acl,heartbeat=none,errors=remount-ro,coherency=full,coherency=full,localflocks,intr,noacl,") = 0 [ 88.467781][ T5824] ======================================================= [ 88.467781][ T5824] WARNING: The mand mount option has been deprecated and [ 88.467781][ T5824] and is ignored by this kernel. Remove the mand [ 88.467781][ T5824] option from the mount to silence this warning. [ 88.467781][ T5824] ======================================================= openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 chdir("./file1") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) mkdir("./file0", 0777) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- mkdir("./file2", 0777) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 88.549259][ T5824] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 88.630065][ T5824] overlayfs: upper fs does not support tmpfile. [ 88.638973][ T5824] overlayfs: upper fs does not support RENAME_WHITEOUT. [ 88.646335][ T5824] [ 88.648688][ T5824] ====================================================== [ 88.655702][ T5824] WARNING: possible circular locking dependency detected [ 88.662817][ T5824] 6.15.0-syzkaller #0 Not tainted [ 88.667832][ T5824] ------------------------------------------------------ [ 88.674835][ T5824] syz-executor100/5824 is trying to acquire lock: [ 88.681236][ T5824] ffff888075c9ed80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 88.694771][ T5824] [ 88.694771][ T5824] but task is already holding lock: [ 88.702154][ T5824] ffff888075ca1538 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0 [ 88.711662][ T5824] [ 88.711662][ T5824] which lock already depends on the new lock. [ 88.711662][ T5824] [ 88.722082][ T5824] [ 88.722082][ T5824] the existing dependency chain (in reverse order) is: [ 88.731101][ T5824] [ 88.731101][ T5824] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}: [ 88.738932][ T5824] lock_acquire+0x120/0x360 [ 88.743967][ T5824] down_write+0x96/0x1f0 [ 88.748836][ T5824] ocfs2_xattr_set_handle+0x3b0/0x7a0 [ 88.754729][ T5824] ocfs2_init_security_set+0xbd/0xe0 [ 88.760624][ T5824] ocfs2_mknod+0x137f/0x2050 [ 88.765762][ T5824] ocfs2_mkdir+0x191/0x440 [ 88.770723][ T5824] vfs_mkdir+0x303/0x510 [ 88.775489][ T5824] do_mkdirat+0x247/0x590 [ 88.780356][ T5824] __x64_sys_mkdir+0x6c/0x80 [ 88.785471][ T5824] do_syscall_64+0xf6/0x210 [ 88.790501][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.796916][ T5824] [ 88.796916][ T5824] -> #3 (jbd2_handle){.+.+}-{0:0}: [ 88.804230][ T5824] lock_acquire+0x120/0x360 [ 88.809261][ T5824] start_this_handle+0x1fa7/0x21c0 [ 88.814895][ T5824] jbd2__journal_start+0x2c1/0x5b0 [ 88.820530][ T5824] jbd2_journal_start+0x2a/0x40 [ 88.825987][ T5824] ocfs2_start_trans+0x376/0x6d0 [ 88.831466][ T5824] ocfs2_reserve_suballoc_bits+0x711/0x4640 [ 88.837881][ T5824] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 88.844730][ T5824] ocfs2_mknod+0xe08/0x2050 [ 88.849762][ T5824] ocfs2_mkdir+0x191/0x440 [ 88.855053][ T5824] vfs_mkdir+0x303/0x510 [ 88.859827][ T5824] do_mkdirat+0x247/0x590 [ 88.864682][ T5824] __x64_sys_mkdir+0x6c/0x80 [ 88.869796][ T5824] do_syscall_64+0xf6/0x210 [ 88.874825][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.881257][ T5824] [ 88.881257][ T5824] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: [ 88.889810][ T5824] lock_acquire+0x120/0x360 [ 88.894871][ T5824] down_read+0x46/0x2e0 [ 88.899564][ T5824] ocfs2_start_trans+0x36a/0x6d0 [ 88.905030][ T5824] ocfs2_reserve_suballoc_bits+0x711/0x4640 [ 88.911450][ T5824] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 88.918303][ T5824] ocfs2_mknod+0xe08/0x2050 [ 88.923359][ T5824] ocfs2_mkdir+0x191/0x440 [ 88.928304][ T5824] vfs_mkdir+0x303/0x510 [ 88.933071][ T5824] do_mkdirat+0x247/0x590 [ 88.937926][ T5824] __x64_sys_mkdir+0x6c/0x80 [ 88.943043][ T5824] do_syscall_64+0xf6/0x210 [ 88.948073][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.954485][ T5824] [ 88.954485][ T5824] -> #1 (sb_internal#2){.+.+}-{0:0}: [ 88.961979][ T5824] lock_acquire+0x120/0x360 [ 88.967028][ T5824] ocfs2_start_trans+0x26b/0x6d0 [ 88.972490][ T5824] ocfs2_mknod+0xe93/0x2050 [ 88.977522][ T5824] ocfs2_mkdir+0x191/0x440 [ 88.982467][ T5824] vfs_mkdir+0x303/0x510 [ 88.987237][ T5824] do_mkdirat+0x247/0x590 [ 88.992097][ T5824] __x64_sys_mkdir+0x6c/0x80 [ 88.997215][ T5824] do_syscall_64+0xf6/0x210 [ 89.002243][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.008671][ T5824] [ 89.008671][ T5824] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}: [ 89.019196][ T5824] validate_chain+0xb9b/0x2140 [ 89.024581][ T5824] __lock_acquire+0xaac/0xd20 [ 89.029785][ T5824] lock_acquire+0x120/0x360 [ 89.034825][ T5824] down_write+0x96/0x1f0 [ 89.039592][ T5824] ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 89.046287][ T5824] ocfs2_reserve_clusters_with_limit+0x1be/0xba0 [ 89.053222][ T5824] ocfs2_init_xattr_set_ctxt+0x376/0x700 [ 89.059381][ T5824] ocfs2_xattr_set+0xb70/0x11f0 [ 89.064756][ T5824] __vfs_setxattr+0x439/0x480 [ 89.069962][ T5824] __vfs_setxattr_noperm+0x12d/0x660 [ 89.075863][ T5824] vfs_setxattr+0x16b/0x2f0 [ 89.080886][ T5824] ovl_get_workdir+0xb86/0x1700 [ 89.086267][ T5824] ovl_fill_super+0x1386/0x35d0 [ 89.091652][ T5824] get_tree_nodev+0xb8/0x150 [ 89.096768][ T5824] vfs_get_tree+0x92/0x2b0 [ 89.101767][ T5824] do_new_mount+0x24a/0xa40 [ 89.106825][ T5824] __se_sys_mount+0x317/0x410 [ 89.112033][ T5824] do_syscall_64+0xf6/0x210 [ 89.117066][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.123481][ T5824] [ 89.123481][ T5824] other info that might help us debug this: [ 89.123481][ T5824] [ 89.133713][ T5824] Chain exists of: [ 89.133713][ T5824] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5 --> jbd2_handle --> &oi->ip_xattr_sem [ 89.133713][ T5824] [ 89.149564][ T5824] Possible unsafe locking scenario: [ 89.149564][ T5824] [ 89.157368][ T5824] CPU0 CPU1 [ 89.162730][ T5824] ---- ---- [ 89.168092][ T5824] lock(&oi->ip_xattr_sem); [ 89.172776][ T5824] lock(jbd2_handle); [ 89.179367][ T5824] lock(&oi->ip_xattr_sem); [ 89.186477][ T5824] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); [ 89.193858][ T5824] [ 89.193858][ T5824] *** DEADLOCK *** [ 89.193858][ T5824] [ 89.201995][ T5824] 4 locks held by syz-executor100/5824: [ 89.207537][ T5824] #0: ffff88807679e0e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970 [ 89.217689][ T5824] #1: ffff8880116f2420 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 89.226848][ T5824] #2: ffff888075ca1800 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x144/0x2f0 [ 89.237327][ T5824] #3: ffff888075ca1538 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0 [ 89.247264][ T5824] [ 89.247264][ T5824] stack backtrace: [ 89.253165][ T5824] CPU: 0 UID: 0 PID: 5824 Comm: syz-executor100 Not tainted 6.15.0-syzkaller #0 PREEMPT(full) [ 89.253184][ T5824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 89.253203][ T5824] Call Trace: [ 89.253210][ T5824] [ 89.253220][ T5824] dump_stack_lvl+0x189/0x250 [ 89.253245][ T5824] ? __pfx_dump_stack_lvl+0x10/0x10 [ 89.253265][ T5824] ? __pfx__printk+0x10/0x10 [ 89.253290][ T5824] ? print_lock_name+0xde/0x100 [ 89.253314][ T5824] print_circular_bug+0x2ee/0x310 [ 89.253331][ T5824] check_noncircular+0x134/0x160 [ 89.253348][ T5824] validate_chain+0xb9b/0x2140 [ 89.253373][ T5824] ? __mutex_unlock_slowpath+0x1cd/0x700 [ 89.253396][ T5824] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 89.253420][ T5824] __lock_acquire+0xaac/0xd20 [ 89.253443][ T5824] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 89.253465][ T5824] lock_acquire+0x120/0x360 [ 89.253484][ T5824] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 89.253508][ T5824] ? is_bpf_text_address+0x292/0x2b0 [ 89.253528][ T5824] ? is_bpf_text_address+0x26/0x2b0 [ 89.253551][ T5824] down_write+0x96/0x1f0 [ 89.253571][ T5824] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 89.253593][ T5824] ? __pfx_down_write+0x10/0x10 [ 89.253613][ T5824] ? arch_stack_walk+0xfc/0x150 [ 89.253635][ T5824] ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 89.253657][ T5824] ? stack_trace_save+0x9c/0xe0 [ 89.253678][ T5824] ? __pfx_stack_trace_save+0x10/0x10 [ 89.253694][ T5824] ? check_path+0x21/0x40 [ 89.253706][ T5824] ? check_noncircular+0xe0/0x160 [ 89.253721][ T5824] ? lockdep_unlock+0x89/0x120 [ 89.253739][ T5824] ? validate_chain+0x897/0x2140 [ 89.253762][ T5824] ? __pfx_ocfs2_reserve_local_alloc_bits+0x10/0x10 [ 89.253784][ T5824] ? do_new_mount+0x24a/0xa40 [ 89.253815][ T5824] ? __lock_acquire+0xaac/0xd20 [ 89.253842][ T5824] ? do_raw_spin_unlock+0x122/0x240 [ 89.253859][ T5824] ? _raw_spin_unlock+0x28/0x50 [ 89.253874][ T5824] ? ocfs2_alloc_should_use_local+0x152/0x310 [ 89.253894][ T5824] ? ocfs2_reserve_clusters_with_limit+0x16b/0xba0 [ 89.253912][ T5824] ocfs2_reserve_clusters_with_limit+0x1be/0xba0 [ 89.253930][ T5824] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10 [ 89.253950][ T5824] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10 [ 89.253973][ T5824] ? __lock_acquire+0xaac/0xd20 [ 89.253996][ T5824] ocfs2_init_xattr_set_ctxt+0x376/0x700 [ 89.254016][ T5824] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10 [ 89.254036][ T5824] ? ocfs2_xattr_set+0xb36/0x11f0 [ 89.254054][ T5824] ? up_write+0x1c4/0x420 [ 89.254067][ T5824] ? ocfs2_xattr_set+0x334/0x11f0 [ 89.254085][ T5824] ocfs2_xattr_set+0xb70/0x11f0 [ 89.254110][ T5824] ? __pfx_ocfs2_xattr_set+0x10/0x10 [ 89.254128][ T5824] ? up+0xde/0x150 [ 89.254149][ T5824] ? smack_log+0xef/0x3f0 [ 89.254173][ T5824] ? smk_access+0x14c/0x4e0 [ 89.254197][ T5824] ? smk_tskacc+0x2fc/0x370 [ 89.254232][ T5824] ? posix_xattr_acl+0x93/0xc0 [ 89.254254][ T5824] ? evm_protect_xattr+0x4d4/0xa90 [ 89.254276][ T5824] ? __pfx_evm_protect_xattr+0x10/0x10 [ 89.254295][ T5824] ? safesetid_security_capable+0xa9/0x1a0 [ 89.254313][ T5824] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10 [ 89.254331][ T5824] __vfs_setxattr+0x439/0x480 [ 89.254359][ T5824] __vfs_setxattr_noperm+0x12d/0x660 [ 89.254385][ T5824] vfs_setxattr+0x16b/0x2f0 [ 89.254401][ T5824] ? __pfx_vfs_setxattr+0x10/0x10 [ 89.254426][ T5824] ? up_write+0x1c4/0x420 [ 89.254442][ T5824] ovl_get_workdir+0xb86/0x1700 [ 89.254467][ T5824] ? __pfx_ovl_get_workdir+0x10/0x10 [ 89.254497][ T5824] ? do_raw_spin_unlock+0x122/0x240 [ 89.254514][ T5824] ? _raw_spin_unlock+0x28/0x50 [ 89.254529][ T5824] ? ovl_inuse_trylock+0xae/0xf0 [ 89.254549][ T5824] ovl_fill_super+0x1386/0x35d0 [ 89.254574][ T5824] ? rcu_is_watching+0x15/0xb0 [ 89.254600][ T5824] ? shrinker_register+0x124/0x230 [ 89.254623][ T5824] ? __pfx_ovl_fill_super+0x10/0x10 [ 89.254643][ T5824] ? __pfx___mutex_lock+0x10/0x10 [ 89.254662][ T5824] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 89.254690][ T5824] ? __raw_spin_lock_init+0x45/0x100 [ 89.254711][ T5824] ? sget_fc+0x962/0xa40 [ 89.254730][ T5824] ? __pfx_set_anon_super_fc+0x10/0x10 [ 89.254750][ T5824] ? __pfx_ovl_fill_super+0x10/0x10 [ 89.254770][ T5824] get_tree_nodev+0xb8/0x150 [ 89.254791][ T5824] vfs_get_tree+0x92/0x2b0 [ 89.254813][ T5824] do_new_mount+0x24a/0xa40 [ 89.254840][ T5824] __se_sys_mount+0x317/0x410 [ 89.254856][ T5824] ? __pfx___se_sys_mount+0x10/0x10 [ 89.254871][ T5824] ? __x64_sys_mount+0x20/0xc0 [ 89.254886][ T5824] do_syscall_64+0xf6/0x210 [ 89.254906][ T5824] ? clear_bhb_loop+0x60/0xb0 [ 89.254923][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.254938][ T5824] RIP: 0033:0x7fd0762880f9 [ 89.254959][ T5824] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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 [ 89.254972][ T5824] RSP: 002b:00007ffc82760c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 89.254988][ T5824] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd0762880f9 [ 89.254999][ T5824] RDX: 0000200000000000 RSI: 0000200000000080 RDI: 0000000000000000 [ 89.255009][ T5824] RBP: 00007ffc82760c78 R08: 0000200000000140 R09: 00007fd076254060 [ 89.255020][ T5824] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 89.255028][ T5824] R13: 00007ffc82760ed8 R14: 0000000000000001 R15: 0000000000000001 [ 89.255044][ T5824] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [