./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor869622332 <...> Warning: Permanently added '10.128.1.141' (ED25519) to the list of known hosts. execve("./syz-executor869622332", ["./syz-executor869622332"], 0x7ffd962dfcd0 /* 10 vars */) = 0 brk(NULL) = 0x555588e70000 brk(0x555588e70d00) = 0x555588e70d00 arch_prctl(ARCH_SET_FS, 0x555588e70380) = 0 set_tid_address(0x555588e70650) = 5829 set_robust_list(0x555588e70660, 24) = 0 rseq(0x555588e70ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor869622332", 4096) = 27 getrandom("\x72\x78\x02\xb1\xa8\x10\xda\x2f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555588e70d00 brk(0x555588e91d00) = 0x555588e91d00 brk(0x555588e92000) = 0x555588e92000 mprotect(0x7fbbcf2f4000, 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) = 0x7fbbc6e00000 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(0x7fbbc6e00000, 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 [ 89.412477][ T5829] loop0: detected capacity change from 0 to 32768 [ 89.456576][ T5829] ======================================================= [ 89.456576][ T5829] WARNING: The mand mount option has been deprecated and [ 89.456576][ T5829] and is ignored by this kernel. Remove the mand [ 89.456576][ T5829] option from the mount to silence this warning. [ 89.456576][ T5829] ======================================================= 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 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 mkdirat(AT_FDCWD, "./file1", 000) = 0 mkdir("./bus", 000) = 0 [ 89.509048][ T5829] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 89.548405][ T5829] overlayfs: upper fs does not support tmpfile. [ 89.557043][ T5829] overlayfs: upper fs does not support RENAME_WHITEOUT. [ 89.564318][ T5829] [ 89.566649][ T5829] ====================================================== [ 89.573649][ T5829] WARNING: possible circular locking dependency detected [ 89.580662][ T5829] 6.15.0-rc2-syzkaller-00042-g1a1d569a75f3 #0 Not tainted [ 89.587762][ T5829] ------------------------------------------------------ [ 89.594764][ T5829] syz-executor869/5829 is trying to acquire lock: [ 89.601156][ T5829] ffff888073562640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x12b/0x2800 [ 89.614658][ T5829] [ 89.614658][ T5829] but task is already holding lock: [ 89.622008][ T5829] ffff8880735431b8 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x635/0x1940 [ 89.631513][ T5829] [ 89.631513][ T5829] which lock already depends on the new lock. [ 89.631513][ T5829] [ 89.641921][ T5829] [ 89.641921][ T5829] the existing dependency chain (in reverse order) is: [ 89.650929][ T5829] [ 89.650929][ T5829] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}: [ 89.658753][ T5829] lock_acquire+0x116/0x2f0 [ 89.663775][ T5829] down_write+0x9c/0x220 [ 89.668560][ T5829] ocfs2_xattr_set_handle+0x53b/0xa20 [ 89.674495][ T5829] ocfs2_init_security_set+0xbd/0xd0 [ 89.680336][ T5829] ocfs2_mknod+0x1cd3/0x2b30 [ 89.685461][ T5829] ocfs2_mkdir+0x19c/0x470 [ 89.690404][ T5829] vfs_mkdir+0x2f9/0x500 [ 89.695176][ T5829] do_mkdirat+0x273/0x3f0 [ 89.700032][ T5829] __x64_sys_mkdirat+0x87/0xa0 [ 89.705327][ T5829] do_syscall_64+0xf3/0x230 [ 89.710376][ T5829] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.716814][ T5829] [ 89.716814][ T5829] -> #3 (jbd2_handle){.+.+}-{0:0}: [ 89.724132][ T5829] lock_acquire+0x116/0x2f0 [ 89.729177][ T5829] start_this_handle+0x1ee4/0x21a0 [ 89.734840][ T5829] jbd2__journal_start+0x2da/0x5d0 [ 89.740501][ T5829] jbd2_journal_start+0x29/0x40 [ 89.745889][ T5829] ocfs2_start_trans+0x3cd/0x710 [ 89.751374][ T5829] ocfs2_reserve_suballoc_bits+0xa54/0x4f30 [ 89.757822][ T5829] ocfs2_reserve_new_metadata_blocks+0x41c/0x9b0 [ 89.764694][ T5829] ocfs2_mknod+0x143e/0x2b30 [ 89.769831][ T5829] ocfs2_mkdir+0x19c/0x470 [ 89.774770][ T5829] vfs_mkdir+0x2f9/0x500 [ 89.779545][ T5829] do_mkdirat+0x273/0x3f0 [ 89.784403][ T5829] __x64_sys_mkdirat+0x87/0xa0 [ 89.789700][ T5829] do_syscall_64+0xf3/0x230 [ 89.794737][ T5829] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.801154][ T5829] [ 89.801154][ T5829] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: [ 89.809685][ T5829] lock_acquire+0x116/0x2f0 [ 89.814718][ T5829] down_read+0xb3/0xa50 [ 89.819417][ T5829] ocfs2_start_trans+0x3c2/0x710 [ 89.824895][ T5829] ocfs2_reserve_suballoc_bits+0xa54/0x4f30 [ 89.831323][ T5829] ocfs2_reserve_new_metadata_blocks+0x41c/0x9b0 [ 89.838178][ T5829] ocfs2_mknod+0x143e/0x2b30 [ 89.843287][ T5829] ocfs2_mkdir+0x19c/0x470 [ 89.848233][ T5829] vfs_mkdir+0x2f9/0x500 [ 89.852998][ T5829] do_mkdirat+0x273/0x3f0 [ 89.857845][ T5829] __x64_sys_mkdirat+0x87/0xa0 [ 89.863146][ T5829] do_syscall_64+0xf3/0x230 [ 89.868188][ T5829] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.874627][ T5829] [ 89.874627][ T5829] -> #1 (sb_internal#2){.+.+}-{0:0}: [ 89.882118][ T5829] lock_acquire+0x116/0x2f0 [ 89.887148][ T5829] ocfs2_start_trans+0x2bd/0x710 [ 89.892616][ T5829] ocfs2_mknod+0x1510/0x2b30 [ 89.897728][ T5829] ocfs2_mkdir+0x19c/0x470 [ 89.902666][ T5829] vfs_mkdir+0x2f9/0x500 [ 89.907438][ T5829] do_mkdirat+0x273/0x3f0 [ 89.912293][ T5829] __x64_sys_mkdirat+0x87/0xa0 [ 89.917584][ T5829] do_syscall_64+0xf3/0x230 [ 89.922612][ T5829] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.929034][ T5829] [ 89.929034][ T5829] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}: [ 89.939557][ T5829] validate_chain+0xa69/0x24e0 [ 89.944839][ T5829] __lock_acquire+0xad5/0xd80 [ 89.950039][ T5829] lock_acquire+0x116/0x2f0 [ 89.955060][ T5829] down_write+0x9c/0x220 [ 89.959826][ T5829] ocfs2_reserve_local_alloc_bits+0x12b/0x2800 [ 89.966496][ T5829] ocfs2_reserve_clusters_with_limit+0x1ba/0xb60 [ 89.973347][ T5829] ocfs2_init_xattr_set_ctxt+0x435/0x900 [ 89.979504][ T5829] ocfs2_xattr_set+0xf52/0x1940 [ 89.984883][ T5829] __vfs_setxattr+0x468/0x4a0 [ 89.990080][ T5829] __vfs_setxattr_noperm+0x12e/0x660 [ 89.995884][ T5829] vfs_setxattr+0x223/0x430 [ 90.000911][ T5829] ovl_get_workdir+0xea3/0x19e0 [ 90.006278][ T5829] ovl_fill_super+0x1508/0x39f0 [ 90.011643][ T5829] get_tree_nodev+0xb7/0x140 [ 90.016758][ T5829] vfs_get_tree+0x90/0x2b0 [ 90.021707][ T5829] do_new_mount+0x2cf/0xb70 [ 90.026732][ T5829] __se_sys_mount+0x38c/0x400 [ 90.031930][ T5829] do_syscall_64+0xf3/0x230 [ 90.036954][ T5829] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.043362][ T5829] [ 90.043362][ T5829] other info that might help us debug this: [ 90.043362][ T5829] [ 90.053582][ T5829] Chain exists of: [ 90.053582][ T5829] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5 --> jbd2_handle --> &oi->ip_xattr_sem [ 90.053582][ T5829] [ 90.069335][ T5829] Possible unsafe locking scenario: [ 90.069335][ T5829] [ 90.076784][ T5829] CPU0 CPU1 [ 90.082145][ T5829] ---- ---- [ 90.087506][ T5829] lock(&oi->ip_xattr_sem); [ 90.092102][ T5829] lock(jbd2_handle); [ 90.098716][ T5829] lock(&oi->ip_xattr_sem); [ 90.105824][ T5829] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); [ 90.113117][ T5829] [ 90.113117][ T5829] *** DEADLOCK *** [ 90.113117][ T5829] [ 90.121252][ T5829] 4 locks held by syz-executor869/5829: [ 90.126793][ T5829] #0: ffff8880241da0e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0 [ 90.136935][ T5829] #1: ffff88807a266420 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 [ 90.146096][ T5829] #2: ffff888073543480 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x1e3/0x430 [ 90.156553][ T5829] #3: ffff8880735431b8 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x635/0x1940 [ 90.166489][ T5829] [ 90.166489][ T5829] stack backtrace: [ 90.172391][ T5829] CPU: 0 UID: 0 PID: 5829 Comm: syz-executor869 Not tainted 6.15.0-rc2-syzkaller-00042-g1a1d569a75f3 #0 PREEMPT(full) [ 90.172417][ T5829] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 90.172433][ T5829] Call Trace: [ 90.172442][ T5829] [ 90.172449][ T5829] dump_stack_lvl+0x241/0x360 [ 90.172478][ T5829] ? __pfx_dump_stack_lvl+0x10/0x10 [ 90.172500][ T5829] ? __pfx__printk+0x10/0x10 [ 90.172522][ T5829] ? print_lock+0x171/0x1a0 [ 90.172542][ T5829] print_circular_bug+0x2e1/0x300 [ 90.172564][ T5829] check_noncircular+0x142/0x160 [ 90.172587][ T5829] validate_chain+0xa69/0x24e0 [ 90.172609][ T5829] ? do_raw_spin_lock+0x151/0x370 [ 90.172637][ T5829] __lock_acquire+0xad5/0xd80 [ 90.172656][ T5829] lock_acquire+0x116/0x2f0 [ 90.172670][ T5829] ? ocfs2_reserve_local_alloc_bits+0x12b/0x2800 [ 90.172688][ T5829] ? unwind_get_return_address+0x4d/0x90 [ 90.172710][ T5829] down_write+0x9c/0x220 [ 90.172732][ T5829] ? ocfs2_reserve_local_alloc_bits+0x12b/0x2800 [ 90.172749][ T5829] ? __pfx_down_write+0x10/0x10 [ 90.172777][ T5829] ? stack_trace_save+0x11a/0x1d0 [ 90.172801][ T5829] ocfs2_reserve_local_alloc_bits+0x12b/0x2800 [ 90.172821][ T5829] ? check_noncircular+0xee/0x160 [ 90.172842][ T5829] ? lockdep_unlock+0x8d/0x120 [ 90.172868][ T5829] ? __pfx_ocfs2_reserve_local_alloc_bits+0x10/0x10 [ 90.172885][ T5829] ? vfs_get_tree+0x90/0x2b0 [ 90.172909][ T5829] ? do_new_mount+0x2cf/0xb70 [ 90.172932][ T5829] ? __lock_acquire+0xad5/0xd80 [ 90.172949][ T5829] ? do_raw_spin_lock+0x151/0x370 [ 90.172974][ T5829] ? do_raw_spin_unlock+0x13c/0x8b0 [ 90.172998][ T5829] ? _raw_spin_unlock+0x28/0x50 [ 90.173014][ T5829] ? ocfs2_alloc_should_use_local+0x155/0x320 [ 90.173030][ T5829] ocfs2_reserve_clusters_with_limit+0x1ba/0xb60 [ 90.173054][ T5829] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10 [ 90.173084][ T5829] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10 [ 90.173103][ T5829] ? __lock_acquire+0xad5/0xd80 [ 90.173120][ T5829] ocfs2_init_xattr_set_ctxt+0x435/0x900 [ 90.173147][ T5829] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10 [ 90.173171][ T5829] ? up_write+0x1ab/0x590 [ 90.173191][ T5829] ? __pfx_ocfs2_truncate_log_needs_flush+0x10/0x10 [ 90.173215][ T5829] ? __pfx_up_write+0x10/0x10 [ 90.173235][ T5829] ? __kmalloc_cache_noprof+0x236/0x370 [ 90.173252][ T5829] ? ocfs2_xattr_set+0x4d7/0x1940 [ 90.173275][ T5829] ocfs2_xattr_set+0xf52/0x1940 [ 90.173306][ T5829] ? __pfx_ocfs2_xattr_set+0x10/0x10 [ 90.173329][ T5829] ? _prb_read_valid+0xb13/0xbb0 [ 90.173350][ T5829] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 90.173384][ T5829] ? smk_tskacc+0x300/0x370 [ 90.173405][ T5829] ? posix_xattr_acl+0xa9/0xd0 [ 90.173421][ T5829] ? evm_protect_xattr+0x4c0/0xb50 [ 90.173438][ T5829] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10 [ 90.173463][ T5829] __vfs_setxattr+0x468/0x4a0 [ 90.173486][ T5829] __vfs_setxattr_noperm+0x12e/0x660 [ 90.173506][ T5829] vfs_setxattr+0x223/0x430 [ 90.173529][ T5829] ? __pfx_vfs_setxattr+0x10/0x10 [ 90.173547][ T5829] ? dput+0x37/0x2b0 [ 90.173565][ T5829] ? dput+0x37/0x2b0 [ 90.173583][ T5829] ovl_get_workdir+0xea3/0x19e0 [ 90.173603][ T5829] ? __pfx_ovl_get_workdir+0x10/0x10 [ 90.173622][ T5829] ? do_raw_spin_lock+0x151/0x370 [ 90.173651][ T5829] ? _raw_spin_unlock+0x28/0x50 [ 90.173666][ T5829] ? ovl_inuse_trylock+0xab/0xf0 [ 90.173692][ T5829] ovl_fill_super+0x1508/0x39f0 [ 90.173715][ T5829] ? shrinker_register+0x118/0x230 [ 90.173744][ T5829] ? __pfx_ovl_fill_super+0x10/0x10 [ 90.173768][ T5829] ? __raw_spin_lock_init+0x45/0x100 [ 90.173796][ T5829] ? sget_fc+0x960/0xa50 [ 90.173817][ T5829] ? __pfx_set_anon_super_fc+0x10/0x10 [ 90.173840][ T5829] ? __pfx_ovl_fill_super+0x10/0x10 [ 90.173855][ T5829] get_tree_nodev+0xb7/0x140 [ 90.173879][ T5829] vfs_get_tree+0x90/0x2b0 [ 90.173904][ T5829] do_new_mount+0x2cf/0xb70 [ 90.173923][ T5829] ? __pfx_do_new_mount+0x10/0x10 [ 90.173944][ T5829] __se_sys_mount+0x38c/0x400 [ 90.173965][ T5829] ? __pfx___se_sys_mount+0x10/0x10 [ 90.173986][ T5829] ? __x64_sys_mount+0x20/0xc0 [ 90.174004][ T5829] do_syscall_64+0xf3/0x230 [ 90.174025][ T5829] ? clear_bhb_loop+0x45/0xa0 [ 90.174044][ T5829] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.174064][ T5829] RIP: 0033:0x7fbbcf27d7b9 [ 90.174083][ T5829] 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 [ 90.174096][ T5829] RSP: 002b:00007ffc363f5af8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 90.174112][ T5829] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007fbbcf27d7b9 [ 90.174125][ T5829] RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000 [ 90.174136][ T5829] RBP: 00007fbbcf2f4610 R08: 0000200000000400 R09: 0000000000000000 [ 90.174146][ T5829] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 90.174156][ T5829] R13: 00007ffc363f5cc8 R14: 0000000000000001 R15: 0000000000000001 [ 90.174172][ T5829] mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 90.663364][