./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3449930193 <...> Warning: Permanently added '10.128.0.77' (ED25519) to the list of known hosts. execve("./syz-executor3449930193", ["./syz-executor3449930193"], 0x7ffcf8ebbbf0 /* 10 vars */) = 0 brk(NULL) = 0x5555581a9000 brk(0x5555581a9d00) = 0x5555581a9d00 arch_prctl(ARCH_SET_FS, 0x5555581a9380) = 0 set_tid_address(0x5555581a9650) = 5821 set_robust_list(0x5555581a9660, 24) = 0 rseq(0x5555581a9ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3449930193", 4096) = 28 getrandom("\xa2\xc8\x45\xec\xb3\x96\x73\x21", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555581a9d00 brk(0x5555581cad00) = 0x5555581cad00 brk(0x5555581cb000) = 0x5555581cb000 mprotect(0x7f7cb76ac000, 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) = 0x7f7caf000000 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(0x7f7caf000000, 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 [ 87.638285][ T5821] loop0: detected capacity change from 0 to 32768 [ 87.682735][ T5821] ======================================================= [ 87.682735][ T5821] WARNING: The mand mount option has been deprecated and [ 87.682735][ T5821] and is ignored by this kernel. Remove the mand [ 87.682735][ T5821] option from the mount to silence this warning. [ 87.682735][ T5821] ======================================================= [ 87.729658][ T5821] JBD2: Ignoring recovery information on journal mount("/dev/loop0", "./file1", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "acl,heartbeat=none,dir_resv_level=00000000000000000003,resv_level=00000000000000000006,coherency=ful"...) = 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, "./file1", 000) = 0 mkdirat(AT_FDCWD, "./file0", 000) = 0 mkdir("./bus", 000) = 0 [ 87.762490][ T5821] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 87.810299][ T5821] overlayfs: upper fs does not support tmpfile. [ 87.818951][ T5821] overlayfs: upper fs does not support RENAME_WHITEOUT. [ 87.826425][ T5821] [ 87.828760][ T5821] ====================================================== [ 87.835775][ T5821] WARNING: possible circular locking dependency detected [ 87.842794][ T5821] 6.15.0-rc4-syzkaller #0 Not tainted [ 87.848155][ T5821] ------------------------------------------------------ [ 87.855161][ T5821] syz-executor344/5821 is trying to acquire lock: [ 87.861576][ T5821] ffff88807a38c2c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 87.875100][ T5821] [ 87.875100][ T5821] but task is already holding lock: [ 87.882468][ T5821] ffff88807a391538 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0 [ 87.891979][ T5821] [ 87.891979][ T5821] which lock already depends on the new lock. [ 87.891979][ T5821] [ 87.902390][ T5821] [ 87.902390][ T5821] the existing dependency chain (in reverse order) is: [ 87.911407][ T5821] [ 87.911407][ T5821] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}: [ 87.919239][ T5821] lock_acquire+0x120/0x360 [ 87.924278][ T5821] down_write+0x96/0x1f0 [ 87.929062][ T5821] ocfs2_xattr_set_handle+0x3b0/0x7a0 [ 87.934957][ T5821] ocfs2_init_security_set+0xbd/0xe0 [ 87.940767][ T5821] ocfs2_mknod+0x137f/0x2050 [ 87.945899][ T5821] ocfs2_mkdir+0x191/0x440 [ 87.950858][ T5821] vfs_mkdir+0x303/0x510 [ 87.955735][ T5821] do_mkdirat+0x247/0x590 [ 87.960611][ T5821] __x64_sys_mkdirat+0x87/0xa0 [ 87.965903][ T5821] do_syscall_64+0xf6/0x210 [ 87.970930][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.977348][ T5821] [ 87.977348][ T5821] -> #3 (jbd2_handle){.+.+}-{0:0}: [ 87.984657][ T5821] lock_acquire+0x120/0x360 [ 87.989692][ T5821] start_this_handle+0x1fa7/0x21c0 [ 87.995327][ T5821] jbd2__journal_start+0x2c1/0x5b0 [ 88.000962][ T5821] jbd2_journal_start+0x2a/0x40 [ 88.006336][ T5821] ocfs2_start_trans+0x376/0x6d0 [ 88.011800][ T5821] ocfs2_reserve_suballoc_bits+0x711/0x45f0 [ 88.018224][ T5821] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 88.025089][ T5821] ocfs2_mknod+0xe08/0x2050 [ 88.030120][ T5821] ocfs2_mkdir+0x191/0x440 [ 88.035071][ T5821] vfs_mkdir+0x303/0x510 [ 88.039841][ T5821] do_mkdirat+0x247/0x590 [ 88.044695][ T5821] __x64_sys_mkdirat+0x87/0xa0 [ 88.049994][ T5821] do_syscall_64+0xf6/0x210 [ 88.055021][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.061441][ T5821] [ 88.061441][ T5821] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: [ 88.069965][ T5821] lock_acquire+0x120/0x360 [ 88.074996][ T5821] down_read+0x46/0x2e0 [ 88.079677][ T5821] ocfs2_start_trans+0x36a/0x6d0 [ 88.085136][ T5821] ocfs2_reserve_suballoc_bits+0x711/0x45f0 [ 88.091558][ T5821] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 88.098415][ T5821] ocfs2_mknod+0xe08/0x2050 [ 88.103448][ T5821] ocfs2_mkdir+0x191/0x440 [ 88.108391][ T5821] vfs_mkdir+0x303/0x510 [ 88.113160][ T5821] do_mkdirat+0x247/0x590 [ 88.118015][ T5821] __x64_sys_mkdirat+0x87/0xa0 [ 88.123313][ T5821] do_syscall_64+0xf6/0x210 [ 88.128341][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.134759][ T5821] [ 88.134759][ T5821] -> #1 (sb_internal#2){.+.+}-{0:0}: [ 88.142245][ T5821] lock_acquire+0x120/0x360 [ 88.147281][ T5821] ocfs2_start_trans+0x26b/0x6d0 [ 88.152740][ T5821] ocfs2_mknod+0xe93/0x2050 [ 88.157775][ T5821] ocfs2_mkdir+0x191/0x440 [ 88.162717][ T5821] vfs_mkdir+0x303/0x510 [ 88.167494][ T5821] do_mkdirat+0x247/0x590 [ 88.172348][ T5821] __x64_sys_mkdirat+0x87/0xa0 [ 88.177638][ T5821] do_syscall_64+0xf6/0x210 [ 88.182678][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.189097][ T5821] [ 88.189097][ T5821] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}: [ 88.199627][ T5821] validate_chain+0xb9b/0x2140 [ 88.204922][ T5821] __lock_acquire+0xaac/0xd20 [ 88.210123][ T5821] lock_acquire+0x120/0x360 [ 88.215150][ T5821] down_write+0x96/0x1f0 [ 88.219917][ T5821] ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 88.226596][ T5821] ocfs2_reserve_clusters_with_limit+0x1be/0xba0 [ 88.233459][ T5821] ocfs2_init_xattr_set_ctxt+0x376/0x700 [ 88.239616][ T5821] ocfs2_xattr_set+0xb70/0x11f0 [ 88.244989][ T5821] __vfs_setxattr+0x439/0x480 [ 88.250201][ T5821] __vfs_setxattr_noperm+0x12d/0x660 [ 88.256018][ T5821] vfs_setxattr+0x16b/0x2f0 [ 88.261070][ T5821] ovl_get_workdir+0xb86/0x1700 [ 88.266469][ T5821] ovl_fill_super+0x1386/0x35d0 [ 88.271854][ T5821] get_tree_nodev+0xb8/0x150 [ 88.276979][ T5821] vfs_get_tree+0x8f/0x2b0 [ 88.281931][ T5821] do_new_mount+0x24a/0xa40 [ 88.286968][ T5821] __se_sys_mount+0x317/0x410 [ 88.292178][ T5821] do_syscall_64+0xf6/0x210 [ 88.297207][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.303623][ T5821] [ 88.303623][ T5821] other info that might help us debug this: [ 88.303623][ T5821] [ 88.313854][ T5821] Chain exists of: [ 88.313854][ T5821] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5 --> jbd2_handle --> &oi->ip_xattr_sem [ 88.313854][ T5821] [ 88.329604][ T5821] Possible unsafe locking scenario: [ 88.329604][ T5821] [ 88.337058][ T5821] CPU0 CPU1 [ 88.342420][ T5821] ---- ---- [ 88.347784][ T5821] lock(&oi->ip_xattr_sem); [ 88.352378][ T5821] lock(jbd2_handle); [ 88.358973][ T5821] lock(&oi->ip_xattr_sem); [ 88.366092][ T5821] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); [ 88.373477][ T5821] [ 88.373477][ T5821] *** DEADLOCK *** [ 88.373477][ T5821] [ 88.381622][ T5821] 4 locks held by syz-executor344/5821: [ 88.387166][ T5821] #0: ffff88807b6520e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970 [ 88.397304][ T5821] #1: ffff888079634420 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 88.406460][ T5821] #2: ffff88807a391800 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x144/0x2f0 [ 88.416925][ T5821] #3: ffff88807a391538 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0 [ 88.426859][ T5821] [ 88.426859][ T5821] stack backtrace: [ 88.432776][ T5821] CPU: 1 UID: 0 PID: 5821 Comm: syz-executor344 Not tainted 6.15.0-rc4-syzkaller #0 PREEMPT(full) [ 88.432795][ T5821] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 88.432811][ T5821] Call Trace: [ 88.432821][ T5821] [ 88.432832][ T5821] dump_stack_lvl+0x189/0x250 [ 88.432860][ T5821] ? __pfx_dump_stack_lvl+0x10/0x10 [ 88.432880][ T5821] ? __pfx__printk+0x10/0x10 [ 88.432905][ T5821] ? print_lock_name+0xde/0x100 [ 88.432928][ T5821] print_circular_bug+0x2ee/0x310 [ 88.432954][ T5821] check_noncircular+0x134/0x160 [ 88.432980][ T5821] validate_chain+0xb9b/0x2140 [ 88.433003][ T5821] ? __mutex_unlock_slowpath+0x1cd/0x700 [ 88.433028][ T5821] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 88.433047][ T5821] __lock_acquire+0xaac/0xd20 [ 88.433068][ T5821] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 88.433089][ T5821] lock_acquire+0x120/0x360 [ 88.433107][ T5821] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 88.433129][ T5821] ? is_bpf_text_address+0x292/0x2b0 [ 88.433149][ T5821] ? is_bpf_text_address+0x26/0x2b0 [ 88.433170][ T5821] down_write+0x96/0x1f0 [ 88.433187][ T5821] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 88.433207][ T5821] ? __pfx_down_write+0x10/0x10 [ 88.433224][ T5821] ? arch_stack_walk+0xfc/0x150 [ 88.433249][ T5821] ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 88.433274][ T5821] ? stack_trace_save+0x9c/0xe0 [ 88.433288][ T5821] ? __pfx_stack_trace_save+0x10/0x10 [ 88.433303][ T5821] ? check_path+0x21/0x40 [ 88.433324][ T5821] ? check_noncircular+0xe0/0x160 [ 88.433349][ T5821] ? lockdep_unlock+0x89/0x120 [ 88.433365][ T5821] ? validate_chain+0x897/0x2140 [ 88.433387][ T5821] ? __pfx_ocfs2_reserve_local_alloc_bits+0x10/0x10 [ 88.433407][ T5821] ? do_new_mount+0x24a/0xa40 [ 88.433437][ T5821] ? __lock_acquire+0xaac/0xd20 [ 88.433462][ T5821] ? do_raw_spin_unlock+0x122/0x240 [ 88.433479][ T5821] ? _raw_spin_unlock+0x28/0x50 [ 88.433500][ T5821] ? ocfs2_alloc_should_use_local+0x152/0x310 [ 88.433518][ T5821] ? ocfs2_reserve_clusters_with_limit+0x16b/0xba0 [ 88.433544][ T5821] ocfs2_reserve_clusters_with_limit+0x1be/0xba0 [ 88.433571][ T5821] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10 [ 88.433599][ T5821] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10 [ 88.433620][ T5821] ? __lock_acquire+0xaac/0xd20 [ 88.433642][ T5821] ocfs2_init_xattr_set_ctxt+0x376/0x700 [ 88.433661][ T5821] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10 [ 88.433679][ T5821] ? ocfs2_xattr_set+0xb36/0x11f0 [ 88.433695][ T5821] ? up_write+0x1c4/0x420 [ 88.433707][ T5821] ? ocfs2_xattr_set+0x334/0x11f0 [ 88.433723][ T5821] ocfs2_xattr_set+0xb70/0x11f0 [ 88.433747][ T5821] ? __pfx_ocfs2_xattr_set+0x10/0x10 [ 88.433762][ T5821] ? up+0xde/0x150 [ 88.433779][ T5821] ? smack_log+0xef/0x3f0 [ 88.433800][ T5821] ? __pfx___console_unlock+0x10/0x10 [ 88.433814][ T5821] ? smk_access+0x14c/0x4e0 [ 88.433835][ T5821] ? smk_tskacc+0x2fc/0x370 [ 88.433858][ T5821] ? posix_xattr_acl+0x93/0xc0 [ 88.433876][ T5821] ? evm_protect_xattr+0x4d4/0xa90 [ 88.433896][ T5821] ? __pfx_evm_protect_xattr+0x10/0x10 [ 88.433912][ T5821] ? safesetid_security_capable+0xa9/0x1a0 [ 88.433928][ T5821] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10 [ 88.433944][ T5821] __vfs_setxattr+0x439/0x480 [ 88.433970][ T5821] __vfs_setxattr_noperm+0x12d/0x660 [ 88.433995][ T5821] vfs_setxattr+0x16b/0x2f0 [ 88.434026][ T5821] ? __pfx_vfs_setxattr+0x10/0x10 [ 88.434049][ T5821] ? up_write+0x1c4/0x420 [ 88.434063][ T5821] ovl_get_workdir+0xb86/0x1700 [ 88.434087][ T5821] ? __pfx_ovl_get_workdir+0x10/0x10 [ 88.434116][ T5821] ? do_raw_spin_unlock+0x122/0x240 [ 88.434132][ T5821] ? _raw_spin_unlock+0x28/0x50 [ 88.434153][ T5821] ? ovl_inuse_trylock+0xae/0xf0 [ 88.434172][ T5821] ovl_fill_super+0x1386/0x35d0 [ 88.434195][ T5821] ? rcu_is_watching+0x15/0xb0 [ 88.434220][ T5821] ? shrinker_register+0x124/0x230 [ 88.434241][ T5821] ? __pfx_ovl_fill_super+0x10/0x10 [ 88.434262][ T5821] ? __pfx___mutex_lock+0x10/0x10 [ 88.434276][ T5821] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 88.434294][ T5821] ? __raw_spin_lock_init+0x45/0x100 [ 88.434314][ T5821] ? sget_fc+0x962/0xa40 [ 88.434332][ T5821] ? __pfx_set_anon_super_fc+0x10/0x10 [ 88.434350][ T5821] ? __pfx_ovl_fill_super+0x10/0x10 [ 88.434369][ T5821] get_tree_nodev+0xb8/0x150 [ 88.434389][ T5821] vfs_get_tree+0x8f/0x2b0 [ 88.434410][ T5821] do_new_mount+0x24a/0xa40 [ 88.434435][ T5821] __se_sys_mount+0x317/0x410 [ 88.434460][ T5821] ? __pfx___se_sys_mount+0x10/0x10 [ 88.434484][ T5821] ? __x64_sys_mount+0x20/0xc0 [ 88.434508][ T5821] do_syscall_64+0xf6/0x210 [ 88.434523][ T5821] ? clear_bhb_loop+0x45/0xa0 [ 88.434541][ T5821] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.434556][ T5821] RIP: 0033:0x7f7cb7635779 [ 88.434579][ T5821] 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 [ 88.434592][ T5821] RSP: 002b:00007fff75ce1498 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 88.434608][ T5821] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f7cb7635779 [ 88.434620][ T5821] RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000 [ 88.434630][ T5821] RBP: 00007f7cb76ac610 R08: 0000200000000380 R09: 0000000000000000 [ 88.434640][ T5821] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 88.434649][ T5821] R13: 00007fff75ce1668 R14: 0000000000000001 R15: 0000000000000001 [ 88.434664][ T5821] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,") = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [