./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor191037185 <...> Warning: Permanently added '10.128.10.52' (ED25519) to the list of known hosts. execve("./syz-executor191037185", ["./syz-executor191037185"], 0x7ffe180c4750 /* 10 vars */) = 0 brk(NULL) = 0x55557207c000 brk(0x55557207cd00) = 0x55557207cd00 arch_prctl(ARCH_SET_FS, 0x55557207c380) = 0 set_tid_address(0x55557207c650) = 5817 set_robust_list(0x55557207c660, 24) = 0 rseq(0x55557207cca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor191037185", 4096) = 27 getrandom("\x42\x3f\x97\xef\x7f\x61\xa4\x17", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557207cd00 brk(0x55557209dd00) = 0x55557209dd00 brk(0x55557209e000) = 0x55557209e000 mprotect(0x7fd953d95000, 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 executing program write(1, "executing program\n", 18) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd94b800000 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(0x7fd94b800000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file1", 0777) = 0 [ 87.395612][ T5817] loop0: detected capacity change from 0 to 32768 [ 87.422796][ T5817] ======================================================= [ 87.422796][ T5817] WARNING: The mand mount option has been deprecated and [ 87.422796][ T5817] and is ignored by this kernel. Remove the mand mount("/dev/loop0", "./file1", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "acl,heartbeat=none,nouser_xattr,coherency=full,data=writeback,localalloc=00000000000000000001,acl,no"...) = 0 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) mkdirat(AT_FDCWD, "./file0", 000) = 0 mkdir("./file1", 000) = 0 mkdir("./bus", 000) = 0 [ 87.422796][ T5817] option from the mount to silence this warning. [ 87.422796][ T5817] ======================================================= [ 87.477451][ T5817] ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode. [ 87.508892][ T5817] overlayfs: upper fs does not support tmpfile. [ 87.518232][ T5817] overlayfs: upper fs does not support RENAME_WHITEOUT. [ 87.525581][ T5817] [ 87.528085][ T5817] ====================================================== [ 87.535091][ T5817] WARNING: possible circular locking dependency detected [ 87.542102][ T5817] 6.15.0-rc4-syzkaller-00051-g7a13c14ee59d #0 Not tainted [ 87.549197][ T5817] ------------------------------------------------------ [ 87.556204][ T5817] syz-executor191/5817 is trying to acquire lock: [ 87.562615][ T5817] ffff8880748d5100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x15e/0x45f0 [ 87.575874][ T5817] [ 87.575874][ T5817] but task is already holding lock: [ 87.583325][ T5817] ffff8880748d9538 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0 [ 87.592909][ T5817] [ 87.592909][ T5817] which lock already depends on the new lock. [ 87.592909][ T5817] [ 87.603317][ T5817] [ 87.603317][ T5817] the existing dependency chain (in reverse order) is: [ 87.612327][ T5817] [ 87.612327][ T5817] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}: [ 87.620148][ T5817] lock_acquire+0x120/0x360 [ 87.625176][ T5817] down_write+0x96/0x1f0 [ 87.629954][ T5817] ocfs2_xattr_set_handle+0x3b0/0x7a0 [ 87.635845][ T5817] ocfs2_init_security_set+0xbd/0xe0 [ 87.641651][ T5817] ocfs2_mknod+0x137f/0x2050 [ 87.646766][ T5817] ocfs2_mkdir+0x191/0x440 [ 87.651705][ T5817] vfs_mkdir+0x303/0x510 [ 87.656496][ T5817] do_mkdirat+0x247/0x590 [ 87.661350][ T5817] __x64_sys_mkdirat+0x87/0xa0 [ 87.666639][ T5817] do_syscall_64+0xf6/0x210 [ 87.671669][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.678086][ T5817] [ 87.678086][ T5817] -> #3 (jbd2_handle){.+.+}-{0:0}: [ 87.685407][ T5817] lock_acquire+0x120/0x360 [ 87.690434][ T5817] start_this_handle+0x1fa7/0x21c0 [ 87.696151][ T5817] jbd2__journal_start+0x2c1/0x5b0 [ 87.701785][ T5817] jbd2_journal_start+0x2a/0x40 [ 87.707159][ T5817] ocfs2_start_trans+0x376/0x6d0 [ 87.712616][ T5817] ocfs2_reserve_suballoc_bits+0x711/0x45f0 [ 87.719047][ T5817] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 87.725904][ T5817] ocfs2_mknod+0xe08/0x2050 [ 87.730930][ T5817] ocfs2_mkdir+0x191/0x440 [ 87.735873][ T5817] vfs_mkdir+0x303/0x510 [ 87.740641][ T5817] do_mkdirat+0x247/0x590 [ 87.745495][ T5817] __x64_sys_mkdirat+0x87/0xa0 [ 87.750787][ T5817] do_syscall_64+0xf6/0x210 [ 87.755814][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.762227][ T5817] [ 87.762227][ T5817] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: [ 87.770754][ T5817] lock_acquire+0x120/0x360 [ 87.775786][ T5817] down_read+0x46/0x2e0 [ 87.780553][ T5817] ocfs2_start_trans+0x36a/0x6d0 [ 87.786012][ T5817] ocfs2_reserve_suballoc_bits+0x711/0x45f0 [ 87.792434][ T5817] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 87.799288][ T5817] ocfs2_mknod+0xe08/0x2050 [ 87.804318][ T5817] ocfs2_mkdir+0x191/0x440 [ 87.809259][ T5817] vfs_mkdir+0x303/0x510 [ 87.814110][ T5817] do_mkdirat+0x247/0x590 [ 87.818973][ T5817] __x64_sys_mkdirat+0x87/0xa0 [ 87.824284][ T5817] do_syscall_64+0xf6/0x210 [ 87.829342][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.835760][ T5817] [ 87.835760][ T5817] -> #1 (sb_internal#2){.+.+}-{0:0}: [ 87.843246][ T5817] lock_acquire+0x120/0x360 [ 87.848278][ T5817] ocfs2_start_trans+0x26b/0x6d0 [ 87.853734][ T5817] ocfs2_reserve_suballoc_bits+0x711/0x45f0 [ 87.860158][ T5817] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 87.867021][ T5817] ocfs2_mknod+0xe08/0x2050 [ 87.872054][ T5817] ocfs2_mkdir+0x191/0x440 [ 87.877009][ T5817] vfs_mkdir+0x303/0x510 [ 87.881778][ T5817] do_mkdirat+0x247/0x590 [ 87.886633][ T5817] __x64_sys_mkdirat+0x87/0xa0 [ 87.891923][ T5817] do_syscall_64+0xf6/0x210 [ 87.896946][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.903361][ T5817] [ 87.903361][ T5817] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}: [ 87.913887][ T5817] validate_chain+0xb9b/0x2140 [ 87.919179][ T5817] __lock_acquire+0xaac/0xd20 [ 87.924381][ T5817] lock_acquire+0x120/0x360 [ 87.929407][ T5817] down_write+0x96/0x1f0 [ 87.934172][ T5817] ocfs2_reserve_suballoc_bits+0x15e/0x45f0 [ 87.940596][ T5817] ocfs2_reserve_clusters_with_limit+0x2fb/0xba0 [ 87.947451][ T5817] ocfs2_init_xattr_set_ctxt+0x376/0x700 [ 87.953607][ T5817] ocfs2_xattr_set+0xb70/0x11f0 [ 87.958980][ T5817] __vfs_setxattr+0x439/0x480 [ 87.964187][ T5817] __vfs_setxattr_noperm+0x12d/0x660 [ 87.970000][ T5817] vfs_setxattr+0x16b/0x2f0 [ 87.975031][ T5817] ovl_get_workdir+0xb86/0x1700 [ 87.980407][ T5817] ovl_fill_super+0x1386/0x35d0 [ 87.985785][ T5817] get_tree_nodev+0xb8/0x150 [ 87.990902][ T5817] vfs_get_tree+0x8f/0x2b0 [ 87.995843][ T5817] do_new_mount+0x24a/0xa40 [ 88.000876][ T5817] __se_sys_mount+0x317/0x410 [ 88.006082][ T5817] do_syscall_64+0xf6/0x210 [ 88.011106][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.017521][ T5817] [ 88.017521][ T5817] other info that might help us debug this: [ 88.017521][ T5817] [ 88.027744][ T5817] Chain exists of: [ 88.027744][ T5817] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4 --> jbd2_handle --> &oi->ip_xattr_sem [ 88.027744][ T5817] [ 88.043490][ T5817] Possible unsafe locking scenario: [ 88.043490][ T5817] [ 88.050934][ T5817] CPU0 CPU1 [ 88.056313][ T5817] ---- ---- [ 88.061678][ T5817] lock(&oi->ip_xattr_sem); [ 88.066274][ T5817] lock(jbd2_handle); [ 88.072866][ T5817] lock(&oi->ip_xattr_sem); [ 88.079975][ T5817] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4); [ 88.087273][ T5817] [ 88.087273][ T5817] *** DEADLOCK *** [ 88.087273][ T5817] [ 88.095412][ T5817] 4 locks held by syz-executor191/5817: [ 88.100949][ T5817] #0: ffff88807bb7c0e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970 [ 88.111093][ T5817] #1: ffff88807b918420 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 88.120249][ T5817] #2: ffff8880748d9800 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x144/0x2f0 [ 88.130708][ T5817] #3: ffff8880748d9538 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0 [ 88.140633][ T5817] [ 88.140633][ T5817] stack backtrace: [ 88.146533][ T5817] CPU: 0 UID: 0 PID: 5817 Comm: syz-executor191 Not tainted 6.15.0-rc4-syzkaller-00051-g7a13c14ee59d #0 PREEMPT(full) [ 88.146553][ T5817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 88.146570][ T5817] Call Trace: [ 88.146578][ T5817] [ 88.146589][ T5817] dump_stack_lvl+0x189/0x250 [ 88.146616][ T5817] ? __pfx_dump_stack_lvl+0x10/0x10 [ 88.146648][ T5817] ? __pfx__printk+0x10/0x10 [ 88.146673][ T5817] ? print_lock_name+0xde/0x100 [ 88.146696][ T5817] print_circular_bug+0x2ee/0x310 [ 88.146721][ T5817] check_noncircular+0x134/0x160 [ 88.146748][ T5817] validate_chain+0xb9b/0x2140 [ 88.146771][ T5817] ? __mutex_unlock_slowpath+0x1cd/0x700 [ 88.146790][ T5817] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 88.146810][ T5817] __lock_acquire+0xaac/0xd20 [ 88.146831][ T5817] ? ocfs2_reserve_suballoc_bits+0x15e/0x45f0 [ 88.146854][ T5817] lock_acquire+0x120/0x360 [ 88.146872][ T5817] ? ocfs2_reserve_suballoc_bits+0x15e/0x45f0 [ 88.146895][ T5817] ? unwind_next_frame+0xa5/0x2390 [ 88.146912][ T5817] ? __kasan_check_byte+0x12/0x40 [ 88.146935][ T5817] down_write+0x96/0x1f0 [ 88.146952][ T5817] ? ocfs2_reserve_suballoc_bits+0x15e/0x45f0 [ 88.146979][ T5817] ? __pfx_down_write+0x10/0x10 [ 88.146996][ T5817] ? is_bpf_text_address+0x26/0x2b0 [ 88.147015][ T5817] ? rcu_is_watching+0x15/0xb0 [ 88.147035][ T5817] ? __kasan_check_byte+0x12/0x40 [ 88.147056][ T5817] ? rcu_is_watching+0x15/0xb0 [ 88.147077][ T5817] ocfs2_reserve_suballoc_bits+0x15e/0x45f0 [ 88.147102][ T5817] ? is_bpf_text_address+0x292/0x2b0 [ 88.147123][ T5817] ? kernel_text_address+0xa5/0xe0 [ 88.147142][ T5817] ? __kernel_text_address+0xd/0x40 [ 88.147159][ T5817] ? unwind_get_return_address+0x4d/0x90 [ 88.147175][ T5817] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 88.147189][ T5817] ? arch_stack_walk+0xfc/0x150 [ 88.147210][ T5817] ? __pfx_ocfs2_reserve_suballoc_bits+0x10/0x10 [ 88.147232][ T5817] ? stack_trace_save+0x9c/0xe0 [ 88.147245][ T5817] ? __pfx_stack_trace_save+0x10/0x10 [ 88.147260][ T5817] ? check_path+0x21/0x40 [ 88.147280][ T5817] ? check_noncircular+0xe0/0x160 [ 88.147304][ T5817] ? lockdep_unlock+0x89/0x120 [ 88.147320][ T5817] ? validate_chain+0x897/0x2140 [ 88.147343][ T5817] ? do_new_mount+0x24a/0xa40 [ 88.147371][ T5817] ? __lock_acquire+0xaac/0xd20 [ 88.147396][ T5817] ? do_raw_spin_unlock+0x122/0x240 [ 88.147411][ T5817] ? _raw_spin_unlock+0x28/0x50 [ 88.147433][ T5817] ? ocfs2_alloc_should_use_local+0x152/0x310 [ 88.147451][ T5817] ? ocfs2_reserve_clusters_with_limit+0x16b/0xba0 [ 88.147476][ T5817] ocfs2_reserve_clusters_with_limit+0x2fb/0xba0 [ 88.147502][ T5817] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10 [ 88.147529][ T5817] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10 [ 88.147550][ T5817] ? __lock_acquire+0xaac/0xd20 [ 88.147571][ T5817] ocfs2_init_xattr_set_ctxt+0x376/0x700 [ 88.147589][ T5817] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10 [ 88.147607][ T5817] ? ocfs2_xattr_set+0xb36/0x11f0 [ 88.147623][ T5817] ? up_write+0x1c4/0x420 [ 88.147635][ T5817] ? ocfs2_xattr_set+0x334/0x11f0 [ 88.147651][ T5817] ocfs2_xattr_set+0xb70/0x11f0 [ 88.147673][ T5817] ? __pfx_ocfs2_xattr_set+0x10/0x10 [ 88.147688][ T5817] ? up+0xde/0x150 [ 88.147706][ T5817] ? smack_log+0xef/0x3f0 [ 88.147729][ T5817] ? smk_access+0x14c/0x4e0 [ 88.147750][ T5817] ? smk_tskacc+0x2fc/0x370 [ 88.147772][ T5817] ? posix_xattr_acl+0x93/0xc0 [ 88.147790][ T5817] ? evm_protect_xattr+0x4d4/0xa90 [ 88.147809][ T5817] ? __pfx_evm_protect_xattr+0x10/0x10 [ 88.147825][ T5817] ? safesetid_security_capable+0xa9/0x1a0 [ 88.147840][ T5817] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10 [ 88.147856][ T5817] __vfs_setxattr+0x439/0x480 [ 88.147882][ T5817] __vfs_setxattr_noperm+0x12d/0x660 [ 88.147906][ T5817] vfs_setxattr+0x16b/0x2f0 [ 88.147929][ T5817] ? __pfx_vfs_setxattr+0x10/0x10 [ 88.147951][ T5817] ? up_write+0x1c4/0x420 [ 88.147966][ T5817] ovl_get_workdir+0xb86/0x1700 [ 88.147996][ T5817] ? __pfx_ovl_get_workdir+0x10/0x10 [ 88.148023][ T5817] ? do_raw_spin_unlock+0x122/0x240 [ 88.148039][ T5817] ? _raw_spin_unlock+0x28/0x50 [ 88.148060][ T5817] ? ovl_inuse_trylock+0xae/0xf0 [ 88.148079][ T5817] ovl_fill_super+0x1386/0x35d0 [ 88.148101][ T5817] ? rcu_is_watching+0x15/0xb0 [ 88.148124][ T5817] ? shrinker_register+0x124/0x230 [ 88.148145][ T5817] ? __pfx_ovl_fill_super+0x10/0x10 [ 88.148163][ T5817] ? __pfx___mutex_lock+0x10/0x10 [ 88.148179][ T5817] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 88.148198][ T5817] ? __raw_spin_lock_init+0x45/0x100 [ 88.148217][ T5817] ? sget_fc+0x962/0xa40 [ 88.148234][ T5817] ? __pfx_set_anon_super_fc+0x10/0x10 [ 88.148252][ T5817] ? __pfx_ovl_fill_super+0x10/0x10 [ 88.148271][ T5817] get_tree_nodev+0xb8/0x150 [ 88.148290][ T5817] vfs_get_tree+0x8f/0x2b0 [ 88.148310][ T5817] do_new_mount+0x24a/0xa40 [ 88.148335][ T5817] __se_sys_mount+0x317/0x410 [ 88.148359][ T5817] ? __pfx___se_sys_mount+0x10/0x10 [ 88.148383][ T5817] ? __x64_sys_mount+0x20/0xc0 [ 88.148405][ T5817] do_syscall_64+0xf6/0x210 [ 88.148423][ T5817] ? clear_bhb_loop+0x45/0xa0 [ 88.148439][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.148454][ T5817] RIP: 0033:0x7fd953d1e779 [ 88.148475][ T5817] 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 [ 88.148487][ T5817] RSP: 002b:00007ffc471b2d78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 88.148503][ T5817] RAX: ffffffffffffffda RBX: 0000200000000040 RCX: 00007fd953d1e779 [ 88.148513][ T5817] RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000 [ 88.148523][ T5817] RBP: 0031656c69662f2e R08: 0000200000000340 R09: 0000000000000000 [ 88.148533][ T5817] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 88.148541][ T5817] R13: 00007ffc471b2f58 R14: 0000000000000001 R15: 0000000000000001 mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 88.