./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2364015699 <...> Warning: Permanently added '10.128.10.49' (ED25519) to the list of known hosts. execve("./syz-executor2364015699", ["./syz-executor2364015699"], 0x7fff960e8480 /* 10 vars */) = 0 brk(NULL) = 0x5555814ba000 brk(0x5555814bad00) = 0x5555814bad00 arch_prctl(ARCH_SET_FS, 0x5555814ba380) = 0 set_tid_address(0x5555814ba650) = 5824 set_robust_list(0x5555814ba660, 24) = 0 rseq(0x5555814baca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2364015699", 4096) = 28 getrandom("\x60\xfe\x60\xfc\xc6\x8b\xf8\x9b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555814bad00 brk(0x5555814dbd00) = 0x5555814dbd00 brk(0x5555814dc000) = 0x5555814dc000 mprotect(0x7f0a26c00000, 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 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) = 0x7f0a1e600000 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(0x7f0a1e600000, 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 [ 74.003937][ T5824] loop0: detected capacity change from 0 to 32768 [ 74.028336][ T5824] ======================================================= [ 74.028336][ T5824] WARNING: The mand mount option has been deprecated and [ 74.028336][ T5824] and is ignored by this kernel. Remove the mand mount("/dev/loop0", "./file1", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "nouser_xattr,heartbeat=none,errors=remount-ro,coherency=full,errors=continue,data=writeback,errors=r"...) = 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) mkdir("./file0", 000) = 0 mkdirat(AT_FDCWD, "./file1", 000) = 0 mkdir("./bus", 0222) = 0 [ 74.028336][ T5824] option from the mount to silence this warning. [ 74.028336][ T5824] ======================================================= [ 74.088047][ T5824] ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode. [ 74.134186][ T5824] overlayfs: upper fs does not support tmpfile. [ 74.142400][ T5824] overlayfs: upper fs does not support RENAME_WHITEOUT. [ 74.149783][ T5824] [ 74.152105][ T5824] ====================================================== [ 74.159098][ T5824] WARNING: possible circular locking dependency detected [ 74.166102][ T5824] 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0 Not tainted [ 74.173185][ T5824] ------------------------------------------------------ [ 74.180179][ T5824] syz-executor236/5824 is trying to acquire lock: [ 74.186563][ T5824] ffff8880777f2640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 74.200040][ T5824] [ 74.200040][ T5824] but task is already holding lock: [ 74.207382][ T5824] ffff8880777f5c78 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0 [ 74.216859][ T5824] [ 74.216859][ T5824] which lock already depends on the new lock. [ 74.216859][ T5824] [ 74.227244][ T5824] [ 74.227244][ T5824] the existing dependency chain (in reverse order) is: [ 74.236239][ T5824] [ 74.236239][ T5824] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}: [ 74.244048][ T5824] lock_acquire+0x120/0x360 [ 74.249065][ T5824] down_write+0x96/0x1f0 [ 74.253829][ T5824] ocfs2_xattr_set_handle+0x3b0/0x7a0 [ 74.259707][ T5824] ocfs2_init_security_set+0xbd/0xe0 [ 74.265498][ T5824] ocfs2_mknod+0x137f/0x2050 [ 74.270602][ T5824] ocfs2_mkdir+0x191/0x440 [ 74.275534][ T5824] vfs_mkdir+0x303/0x510 [ 74.280283][ T5824] do_mkdirat+0x247/0x590 [ 74.285120][ T5824] __x64_sys_mkdir+0x6c/0x80 [ 74.290224][ T5824] do_syscall_64+0xfa/0x3b0 [ 74.295246][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.301823][ T5824] [ 74.301823][ T5824] -> #3 (jbd2_handle){.+.+}-{0:0}: [ 74.309117][ T5824] lock_acquire+0x120/0x360 [ 74.314146][ T5824] start_this_handle+0x1fa7/0x21c0 [ 74.319772][ T5824] jbd2__journal_start+0x2c1/0x5b0 [ 74.325397][ T5824] jbd2_journal_start+0x2a/0x40 [ 74.330752][ T5824] ocfs2_start_trans+0x376/0x6d0 [ 74.336207][ T5824] ocfs2_reserve_suballoc_bits+0x711/0x4640 [ 74.342612][ T5824] ocfs2_reserve_new_inode+0x4f4/0xcc0 [ 74.348586][ T5824] ocfs2_mknod+0x83c/0x2050 [ 74.353603][ T5824] ocfs2_mkdir+0x191/0x440 [ 74.358530][ T5824] vfs_mkdir+0x303/0x510 [ 74.363281][ T5824] do_mkdirat+0x247/0x590 [ 74.368120][ T5824] __x64_sys_mkdir+0x6c/0x80 [ 74.373222][ T5824] do_syscall_64+0xfa/0x3b0 [ 74.378241][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.384640][ T5824] [ 74.384640][ T5824] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: [ 74.393493][ T5824] lock_acquire+0x120/0x360 [ 74.398509][ T5824] down_read+0x46/0x2e0 [ 74.403175][ T5824] ocfs2_start_trans+0x36a/0x6d0 [ 74.408628][ T5824] ocfs2_reserve_suballoc_bits+0x711/0x4640 [ 74.415035][ T5824] ocfs2_reserve_new_inode+0x4f4/0xcc0 [ 74.421004][ T5824] ocfs2_mknod+0x83c/0x2050 [ 74.426018][ T5824] ocfs2_mkdir+0x191/0x440 [ 74.430946][ T5824] vfs_mkdir+0x303/0x510 [ 74.435696][ T5824] do_mkdirat+0x247/0x590 [ 74.440534][ T5824] __x64_sys_mkdir+0x6c/0x80 [ 74.445632][ T5824] do_syscall_64+0xfa/0x3b0 [ 74.450652][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.457054][ T5824] [ 74.457054][ T5824] -> #1 (sb_internal#2){.+.+}-{0:0}: [ 74.464529][ T5824] lock_acquire+0x120/0x360 [ 74.469544][ T5824] ocfs2_start_trans+0x26b/0x6d0 [ 74.474999][ T5824] ocfs2_mknod+0xe93/0x2050 [ 74.480015][ T5824] ocfs2_mkdir+0x191/0x440 [ 74.484940][ T5824] vfs_mkdir+0x303/0x510 [ 74.489690][ T5824] do_mkdirat+0x247/0x590 [ 74.494529][ T5824] __x64_sys_mkdir+0x6c/0x80 [ 74.499628][ T5824] do_syscall_64+0xfa/0x3b0 [ 74.504647][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.511058][ T5824] [ 74.511058][ T5824] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}: [ 74.521574][ T5824] validate_chain+0xb9b/0x2140 [ 74.526853][ T5824] __lock_acquire+0xab9/0xd20 [ 74.532040][ T5824] lock_acquire+0x120/0x360 [ 74.537057][ T5824] down_write+0x96/0x1f0 [ 74.541805][ T5824] ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 74.548468][ T5824] ocfs2_reserve_clusters_with_limit+0x1be/0xba0 [ 74.555312][ T5824] ocfs2_init_xattr_set_ctxt+0x376/0x700 [ 74.561450][ T5824] ocfs2_xattr_set+0xb70/0x11f0 [ 74.566807][ T5824] __vfs_setxattr+0x43c/0x480 [ 74.571995][ T5824] __vfs_setxattr_noperm+0x12d/0x660 [ 74.577789][ T5824] vfs_setxattr+0x16b/0x2f0 [ 74.582802][ T5824] ovl_get_workdir+0xbb7/0x1730 [ 74.588167][ T5824] ovl_fill_super+0x1386/0x35d0 [ 74.593531][ T5824] get_tree_nodev+0xb8/0x150 [ 74.598630][ T5824] vfs_get_tree+0x92/0x2b0 [ 74.603555][ T5824] do_new_mount+0x24a/0xa40 [ 74.608573][ T5824] __se_sys_mount+0x317/0x410 [ 74.613768][ T5824] do_syscall_64+0xfa/0x3b0 [ 74.618786][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.625184][ T5824] [ 74.625184][ T5824] other info that might help us debug this: [ 74.625184][ T5824] [ 74.635405][ T5824] Chain exists of: [ 74.635405][ T5824] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5 --> jbd2_handle --> &oi->ip_xattr_sem [ 74.635405][ T5824] [ 74.651134][ T5824] Possible unsafe locking scenario: [ 74.651134][ T5824] [ 74.658569][ T5824] CPU0 CPU1 [ 74.663919][ T5824] ---- ---- [ 74.669356][ T5824] lock(&oi->ip_xattr_sem); [ 74.673935][ T5824] lock(jbd2_handle); [ 74.680519][ T5824] lock(&oi->ip_xattr_sem); [ 74.687615][ T5824] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); [ 74.694896][ T5824] [ 74.694896][ T5824] *** DEADLOCK *** [ 74.694896][ T5824] [ 74.703030][ T5824] 4 locks held by syz-executor236/5824: [ 74.708560][ T5824] #0: ffff888034f0a0e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970 [ 74.718661][ T5824] #1: ffff888029ad4428 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 74.727795][ T5824] #2: ffff8880777f5f40 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x144/0x2f0 [ 74.738239][ T5824] #3: ffff8880777f5c78 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0 [ 74.748149][ T5824] [ 74.748149][ T5824] stack backtrace: [ 74.754037][ T5824] CPU: 1 UID: 0 PID: 5824 Comm: syz-executor236 Not tainted 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0 PREEMPT(full) [ 74.754056][ T5824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 74.754069][ T5824] Call Trace: [ 74.754082][ T5824] [ 74.754093][ T5824] dump_stack_lvl+0x189/0x250 [ 74.754118][ T5824] ? __pfx_dump_stack_lvl+0x10/0x10 [ 74.754140][ T5824] ? __pfx__printk+0x10/0x10 [ 74.754155][ T5824] ? print_lock_name+0xde/0x100 [ 74.754179][ T5824] print_circular_bug+0x2ee/0x310 [ 74.754204][ T5824] check_noncircular+0x134/0x160 [ 74.754228][ T5824] validate_chain+0xb9b/0x2140 [ 74.754252][ T5824] ? __mutex_unlock_slowpath+0x1cd/0x700 [ 74.754277][ T5824] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 74.754302][ T5824] __lock_acquire+0xab9/0xd20 [ 74.754323][ T5824] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 74.754341][ T5824] lock_acquire+0x120/0x360 [ 74.754360][ T5824] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 74.754379][ T5824] ? is_bpf_text_address+0x26/0x2b0 [ 74.754401][ T5824] ? kernel_text_address+0xa5/0xe0 [ 74.754420][ T5824] down_write+0x96/0x1f0 [ 74.754434][ T5824] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 74.754452][ T5824] ? __pfx_down_write+0x10/0x10 [ 74.754469][ T5824] ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 74.754490][ T5824] ? check_noncircular+0xe0/0x160 [ 74.754514][ T5824] ? lockdep_unlock+0x89/0x120 [ 74.754530][ T5824] ? validate_chain+0x897/0x2140 [ 74.754552][ T5824] ? __pfx_ocfs2_reserve_local_alloc_bits+0x10/0x10 [ 74.754570][ T5824] ? get_tree_nodev+0xb8/0x150 [ 74.754591][ T5824] ? __lock_acquire+0xab9/0xd20 [ 74.754616][ T5824] ? do_raw_spin_unlock+0x122/0x240 [ 74.754632][ T5824] ? _raw_spin_unlock+0x28/0x50 [ 74.754650][ T5824] ? ocfs2_alloc_should_use_local+0x152/0x310 [ 74.754666][ T5824] ? ocfs2_reserve_clusters_with_limit+0x16b/0xba0 [ 74.754690][ T5824] ocfs2_reserve_clusters_with_limit+0x1be/0xba0 [ 74.754714][ T5824] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10 [ 74.754739][ T5824] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10 [ 74.754758][ T5824] ? __lock_acquire+0xab9/0xd20 [ 74.754779][ T5824] ocfs2_init_xattr_set_ctxt+0x376/0x700 [ 74.754796][ T5824] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10 [ 74.754812][ T5824] ? ocfs2_xattr_set+0xb36/0x11f0 [ 74.754827][ T5824] ? up_write+0x1c4/0x420 [ 74.754839][ T5824] ? ocfs2_xattr_set+0x334/0x11f0 [ 74.754853][ T5824] ocfs2_xattr_set+0xb70/0x11f0 [ 74.754876][ T5824] ? __pfx_ocfs2_xattr_set+0x10/0x10 [ 74.754894][ T5824] ? smack_log+0xef/0x3f0 [ 74.754909][ T5824] ? __pfx___console_unlock+0x10/0x10 [ 74.754924][ T5824] ? smk_access+0x14c/0x4e0 [ 74.754939][ T5824] ? smk_tskacc+0x2fc/0x370 [ 74.754954][ T5824] ? posix_xattr_acl+0x93/0xc0 [ 74.754976][ T5824] ? evm_protect_xattr+0x4d4/0xa90 [ 74.754998][ T5824] ? __pfx_evm_protect_xattr+0x10/0x10 [ 74.755018][ T5824] ? safesetid_security_capable+0xa9/0x1a0 [ 74.755037][ T5824] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10 [ 74.755052][ T5824] __vfs_setxattr+0x43c/0x480 [ 74.755075][ T5824] __vfs_setxattr_noperm+0x12d/0x660 [ 74.755101][ T5824] vfs_setxattr+0x16b/0x2f0 [ 74.755122][ T5824] ? __pfx_vfs_setxattr+0x10/0x10 [ 74.755141][ T5824] ? up_write+0x1c4/0x420 [ 74.755156][ T5824] ovl_get_workdir+0xbb7/0x1730 [ 74.755181][ T5824] ? __pfx_ovl_get_workdir+0x10/0x10 [ 74.755211][ T5824] ? do_raw_spin_unlock+0x122/0x240 [ 74.755227][ T5824] ? _raw_spin_unlock+0x28/0x50 [ 74.755245][ T5824] ? ovl_inuse_trylock+0xae/0xf0 [ 74.755266][ T5824] ovl_fill_super+0x1386/0x35d0 [ 74.755291][ T5824] ? rcu_is_watching+0x15/0xb0 [ 74.755315][ T5824] ? shrinker_register+0x124/0x230 [ 74.755339][ T5824] ? __pfx_ovl_fill_super+0x10/0x10 [ 74.755361][ T5824] ? __pfx___mutex_lock+0x10/0x10 [ 74.755382][ T5824] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 74.755407][ T5824] ? __raw_spin_lock_init+0x45/0x100 [ 74.755426][ T5824] ? sget_fc+0x962/0xa40 [ 74.755440][ T5824] ? __pfx_set_anon_super_fc+0x10/0x10 [ 74.755455][ T5824] ? __pfx_ovl_fill_super+0x10/0x10 [ 74.755476][ T5824] get_tree_nodev+0xb8/0x150 [ 74.755493][ T5824] vfs_get_tree+0x92/0x2b0 [ 74.755510][ T5824] do_new_mount+0x24a/0xa40 [ 74.755532][ T5824] __se_sys_mount+0x317/0x410 [ 74.755553][ T5824] ? __pfx___se_sys_mount+0x10/0x10 [ 74.755572][ T5824] ? rcu_is_watching+0x15/0xb0 [ 74.755594][ T5824] ? __x64_sys_mount+0x20/0xc0 [ 74.755614][ T5824] do_syscall_64+0xfa/0x3b0 [ 74.755635][ T5824] ? lockdep_hardirqs_on+0x9c/0x150 [ 74.755656][ T5824] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.755670][ T5824] ? clear_bhb_loop+0x60/0xb0 [ 74.755687][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.755702][ T5824] RIP: 0033:0x7f0a26b89839 [ 74.755719][ 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 [ 74.755736][ T5824] RSP: 002b:00007ffcc7267b58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,metacopy=on,") = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 74.755752][ T5824] RAX: ffffffffffffffda RBX: 00002000000004