./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4156490704 <...> Warning: Permanently added '10.128.1.61' (ED25519) to the list of known hosts. execve("./syz-executor4156490704", ["./syz-executor4156490704"], 0x7ffc7f4b9d40 /* 10 vars */) = 0 brk(NULL) = 0x555566ef5000 brk(0x555566ef5e00) = 0x555566ef5e00 arch_prctl(ARCH_SET_FS, 0x555566ef5480) = 0 set_tid_address(0x555566ef5750) = 5831 set_robust_list(0x555566ef5760, 24) = 0 rseq(0x555566ef5da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4156490704", 4096) = 28 getrandom("\xe7\x63\xab\xf6\x8b\x10\x5c\xcc", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555566ef5e00 brk(0x555566f16e00) = 0x555566f16e00 brk(0x555566f17000) = 0x555566f17000 mprotect(0x7f706fe82000, 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=0x7f706fdd7020, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f706fddf090}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f706fdd7020, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f706fddf090}, NULL, 8) = 0 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) = 0x7f7067800000 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(0x7f7067800000, 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 [ 95.304531][ T5831] loop0: detected capacity change from 0 to 32768 [ 95.338032][ T5831] ======================================================= [ 95.338032][ T5831] WARNING: The mand mount option has been deprecated and [ 95.338032][ T5831] and is ignored by this kernel. Remove the mand [ 95.338032][ T5831] option from the mount to silence this warning. [ 95.338032][ T5831] ======================================================= [ 95.390560][ T5831] 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, "./file0", 000) = 0 mkdir("./file2", 0777) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 95.426033][ T5831] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 95.487278][ T5831] overlayfs: upper fs does not support tmpfile. [ 95.496775][ T5831] overlayfs: upper fs does not support RENAME_WHITEOUT. [ 95.504521][ T5831] [ 95.506911][ T5831] ====================================================== [ 95.513926][ T5831] WARNING: possible circular locking dependency detected [ 95.521049][ T5831] 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 Not tainted [ 95.528155][ T5831] ------------------------------------------------------ [ 95.535203][ T5831] syz-executor415/5831 is trying to acquire lock: [ 95.541628][ T5831] ffff88807a9f2640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 95.555175][ T5831] [ 95.555175][ T5831] but task is already holding lock: [ 95.562546][ T5831] ffff888075569538 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0 [ 95.572124][ T5831] [ 95.572124][ T5831] which lock already depends on the new lock. [ 95.572124][ T5831] [ 95.582522][ T5831] [ 95.582522][ T5831] the existing dependency chain (in reverse order) is: [ 95.591532][ T5831] [ 95.591532][ T5831] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}: [ 95.599356][ T5831] lock_acquire+0x120/0x360 [ 95.604386][ T5831] down_write+0x96/0x1f0 [ 95.609156][ T5831] ocfs2_xattr_set_handle+0x3b0/0x7a0 [ 95.615069][ T5831] ocfs2_init_security_set+0xbd/0xe0 [ 95.620878][ T5831] ocfs2_mknod+0x137f/0x2050 [ 95.626062][ T5831] ocfs2_mkdir+0x191/0x440 [ 95.630999][ T5831] vfs_mkdir+0x303/0x510 [ 95.635793][ T5831] do_mkdirat+0x247/0x590 [ 95.640642][ T5831] __x64_sys_mkdirat+0x87/0xa0 [ 95.645925][ T5831] do_syscall_64+0xfa/0x3b0 [ 95.650957][ T5831] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.657370][ T5831] [ 95.657370][ T5831] -> #3 (jbd2_handle){.+.+}-{0:0}: [ 95.664673][ T5831] lock_acquire+0x120/0x360 [ 95.669700][ T5831] start_this_handle+0x1fa7/0x21c0 [ 95.675368][ T5831] jbd2__journal_start+0x2c1/0x5b0 [ 95.681006][ T5831] jbd2_journal_start+0x2a/0x40 [ 95.686372][ T5831] ocfs2_start_trans+0x376/0x6d0 [ 95.691834][ T5831] ocfs2_reserve_suballoc_bits+0x711/0x4640 [ 95.698256][ T5831] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 95.705177][ T5831] ocfs2_mknod+0xe08/0x2050 [ 95.710258][ T5831] ocfs2_mkdir+0x191/0x440 [ 95.715201][ T5831] vfs_mkdir+0x303/0x510 [ 95.719962][ T5831] do_mkdirat+0x247/0x590 [ 95.724814][ T5831] __x64_sys_mkdirat+0x87/0xa0 [ 95.730100][ T5831] do_syscall_64+0xfa/0x3b0 [ 95.735132][ T5831] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.741547][ T5831] [ 95.741547][ T5831] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: [ 95.750067][ T5831] lock_acquire+0x120/0x360 [ 95.755095][ T5831] down_read+0x46/0x2e0 [ 95.759768][ T5831] ocfs2_start_trans+0x36a/0x6d0 [ 95.765320][ T5831] ocfs2_reserve_suballoc_bits+0x711/0x4640 [ 95.771738][ T5831] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 95.778601][ T5831] ocfs2_mknod+0xe08/0x2050 [ 95.783658][ T5831] ocfs2_mkdir+0x191/0x440 [ 95.788599][ T5831] vfs_mkdir+0x303/0x510 [ 95.793369][ T5831] do_mkdirat+0x247/0x590 [ 95.798218][ T5831] __x64_sys_mkdirat+0x87/0xa0 [ 95.803509][ T5831] do_syscall_64+0xfa/0x3b0 [ 95.808678][ T5831] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.815120][ T5831] [ 95.815120][ T5831] -> #1 (sb_internal#2){.+.+}-{0:0}: [ 95.822604][ T5831] lock_acquire+0x120/0x360 [ 95.827634][ T5831] ocfs2_start_trans+0x26b/0x6d0 [ 95.833096][ T5831] ocfs2_mknod+0xe93/0x2050 [ 95.838149][ T5831] ocfs2_mkdir+0x191/0x440 [ 95.843087][ T5831] vfs_mkdir+0x303/0x510 [ 95.847858][ T5831] do_mkdirat+0x247/0x590 [ 95.852709][ T5831] __x64_sys_mkdirat+0x87/0xa0 [ 95.858020][ T5831] do_syscall_64+0xfa/0x3b0 [ 95.863052][ T5831] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.869480][ T5831] [ 95.869480][ T5831] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}: [ 95.880101][ T5831] validate_chain+0xb9b/0x2140 [ 95.885396][ T5831] __lock_acquire+0xab9/0xd20 [ 95.890683][ T5831] lock_acquire+0x120/0x360 [ 95.895713][ T5831] down_write+0x96/0x1f0 [ 95.900487][ T5831] ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 95.907167][ T5831] ocfs2_reserve_clusters_with_limit+0x1be/0xba0 [ 95.914024][ T5831] ocfs2_init_xattr_set_ctxt+0x376/0x700 [ 95.920263][ T5831] ocfs2_xattr_set+0xb70/0x11f0 [ 95.925653][ T5831] __vfs_setxattr+0x43c/0x480 [ 95.930854][ T5831] __vfs_setxattr_noperm+0x12d/0x660 [ 95.936670][ T5831] vfs_setxattr+0x16b/0x2f0 [ 95.941785][ T5831] ovl_get_workdir+0xbb7/0x1730 [ 95.947180][ T5831] ovl_fill_super+0x1386/0x35d0 [ 95.952569][ T5831] get_tree_nodev+0xbb/0x150 [ 95.957706][ T5831] vfs_get_tree+0x92/0x2b0 [ 95.962674][ T5831] do_new_mount+0x24a/0xa40 [ 95.967724][ T5831] __se_sys_mount+0x317/0x410 [ 95.973008][ T5831] do_syscall_64+0xfa/0x3b0 [ 95.978057][ T5831] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.984501][ T5831] [ 95.984501][ T5831] other info that might help us debug this: [ 95.984501][ T5831] [ 95.994745][ T5831] Chain exists of: [ 95.994745][ T5831] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5 --> jbd2_handle --> &oi->ip_xattr_sem [ 95.994745][ T5831] [ 96.010675][ T5831] Possible unsafe locking scenario: [ 96.010675][ T5831] [ 96.018134][ T5831] CPU0 CPU1 [ 96.023494][ T5831] ---- ---- [ 96.028977][ T5831] lock(&oi->ip_xattr_sem); [ 96.033578][ T5831] lock(jbd2_handle); [ 96.040167][ T5831] lock(&oi->ip_xattr_sem); [ 96.047277][ T5831] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); [ 96.054571][ T5831] [ 96.054571][ T5831] *** DEADLOCK *** [ 96.054571][ T5831] [ 96.062826][ T5831] 4 locks held by syz-executor415/5831: [ 96.068366][ T5831] #0: ffff88803455c0e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970 [ 96.078482][ T5831] #1: ffff88807d224428 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 96.087629][ T5831] #2: ffff888075569800 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x144/0x2f0 [ 96.098092][ T5831] #3: ffff888075569538 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0 [ 96.108019][ T5831] [ 96.108019][ T5831] stack backtrace: [ 96.113919][ T5831] CPU: 0 UID: 0 PID: 5831 Comm: syz-executor415 Not tainted 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full) [ 96.113939][ T5831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 96.113951][ T5831] Call Trace: [ 96.113963][ T5831] [ 96.113971][ T5831] dump_stack_lvl+0x189/0x250 [ 96.113999][ T5831] ? __pfx_dump_stack_lvl+0x10/0x10 [ 96.114020][ T5831] ? __pfx__printk+0x10/0x10 [ 96.114034][ T5831] ? print_lock_name+0xde/0x100 [ 96.114058][ T5831] print_circular_bug+0x2ee/0x310 [ 96.114082][ T5831] check_noncircular+0x134/0x160 [ 96.114106][ T5831] validate_chain+0xb9b/0x2140 [ 96.114129][ T5831] ? __mutex_unlock_slowpath+0x1cd/0x700 [ 96.114153][ T5831] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 96.114178][ T5831] __lock_acquire+0xab9/0xd20 [ 96.114198][ T5831] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 96.114217][ T5831] lock_acquire+0x120/0x360 [ 96.114234][ T5831] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 96.114252][ T5831] ? is_bpf_text_address+0x26/0x2b0 [ 96.114274][ T5831] ? kernel_text_address+0xa5/0xe0 [ 96.114292][ T5831] down_write+0x96/0x1f0 [ 96.114306][ T5831] ? ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 96.114323][ T5831] ? __pfx_down_write+0x10/0x10 [ 96.114340][ T5831] ocfs2_reserve_local_alloc_bits+0x125/0x24e0 [ 96.114361][ T5831] ? check_noncircular+0xe0/0x160 [ 96.114384][ T5831] ? lockdep_unlock+0x89/0x120 [ 96.114400][ T5831] ? validate_chain+0x897/0x2140 [ 96.114421][ T5831] ? __pfx_ocfs2_reserve_local_alloc_bits+0x10/0x10 [ 96.114438][ T5831] ? get_tree_nodev+0xbb/0x150 [ 96.114459][ T5831] ? __lock_acquire+0xab9/0xd20 [ 96.114485][ T5831] ? do_raw_spin_unlock+0x122/0x240 [ 96.114500][ T5831] ? _raw_spin_unlock+0x28/0x50 [ 96.114517][ T5831] ? ocfs2_alloc_should_use_local+0x152/0x310 [ 96.114533][ T5831] ? ocfs2_reserve_clusters_with_limit+0x16b/0xba0 [ 96.114556][ T5831] ocfs2_reserve_clusters_with_limit+0x1be/0xba0 [ 96.114579][ T5831] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10 [ 96.114604][ T5831] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10 [ 96.114622][ T5831] ? __lock_acquire+0xab9/0xd20 [ 96.114644][ T5831] ocfs2_init_xattr_set_ctxt+0x376/0x700 [ 96.114660][ T5831] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10 [ 96.114675][ T5831] ? ocfs2_xattr_set+0xb36/0x11f0 [ 96.114689][ T5831] ? up_write+0x1c4/0x420 [ 96.114701][ T5831] ? ocfs2_xattr_set+0x334/0x11f0 [ 96.114714][ T5831] ocfs2_xattr_set+0xb70/0x11f0 [ 96.114735][ T5831] ? __pfx_ocfs2_xattr_set+0x10/0x10 [ 96.114747][ T5831] ? up+0xde/0x150 [ 96.114761][ T5831] ? smack_log+0xef/0x3f0 [ 96.114776][ T5831] ? __pfx___console_unlock+0x10/0x10 [ 96.114789][ T5831] ? smk_access+0x14c/0x4e0 [ 96.114803][ T5831] ? smk_tskacc+0x2fc/0x370 [ 96.114827][ T5831] ? posix_xattr_acl+0x93/0xc0 [ 96.114849][ T5831] ? evm_protect_xattr+0x4d4/0xa90 [ 96.114871][ T5831] ? __pfx_evm_protect_xattr+0x10/0x10 [ 96.114891][ T5831] ? safesetid_security_capable+0xa9/0x1a0 [ 96.114909][ T5831] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10 [ 96.114923][ T5831] __vfs_setxattr+0x43c/0x480 [ 96.114946][ T5831] __vfs_setxattr_noperm+0x12d/0x660 [ 96.114967][ T5831] vfs_setxattr+0x16b/0x2f0 [ 96.114987][ T5831] ? __pfx_vfs_setxattr+0x10/0x10 [ 96.115005][ T5831] ? up_write+0x1c4/0x420 [ 96.115019][ T5831] ovl_get_workdir+0xbb7/0x1730 [ 96.115043][ T5831] ? __pfx_ovl_get_workdir+0x10/0x10 [ 96.115074][ T5831] ? do_raw_spin_unlock+0x122/0x240 [ 96.115089][ T5831] ? _raw_spin_unlock+0x28/0x50 [ 96.115106][ T5831] ? ovl_inuse_trylock+0xae/0xf0 [ 96.115126][ T5831] ovl_fill_super+0x1386/0x35d0 [ 96.115150][ T5831] ? rcu_is_watching+0x15/0xb0 [ 96.115174][ T5831] ? shrinker_register+0x124/0x230 [ 96.115197][ T5831] ? __pfx_ovl_fill_super+0x10/0x10 [ 96.115218][ T5831] ? __pfx___mutex_lock+0x10/0x10 [ 96.115239][ T5831] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 96.115263][ T5831] ? __raw_spin_lock_init+0x45/0x100 [ 96.115281][ T5831] ? sget_fc+0x962/0xa40 [ 96.115295][ T5831] ? __pfx_set_anon_super_fc+0x10/0x10 [ 96.115309][ T5831] ? __pfx_ovl_fill_super+0x10/0x10 [ 96.115329][ T5831] get_tree_nodev+0xbb/0x150 [ 96.115345][ T5831] vfs_get_tree+0x92/0x2b0 [ 96.115362][ T5831] do_new_mount+0x24a/0xa40 [ 96.115383][ T5831] __se_sys_mount+0x317/0x410 [ 96.115403][ T5831] ? __pfx___se_sys_mount+0x10/0x10 [ 96.115424][ T5831] ? __x64_sys_mount+0x20/0xc0 [ 96.115443][ T5831] do_syscall_64+0xfa/0x3b0 [ 96.115465][ T5831] ? lockdep_hardirqs_on+0x9c/0x150 [ 96.115485][ T5831] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 96.115499][ T5831] ? clear_bhb_loop+0x60/0xb0 [ 96.115514][ T5831] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 96.115528][ T5831] RIP: 0033:0x7f706fe0b0b9 [ 96.115548][ T5831] 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 [ 96.115563][ T5831] RSP: 002b:00007ffdea4dd0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 96.115578][ T5831] RAX: ffffffffffffffda RBX: 00007ffdea4dd0d0 RCX: 00007f706fe0b0b9 [ 96.115588][ T5831] RDX: 0000200000000000 RSI: 00002000000002c0 RDI: 0000000000000000 [ 96.115598][ T5831] RBP: 00007ffdea4dd0d8 R08: 00002000000000c0 R09: 00007f706fdd7020 [ 96.115608][ T5831] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 96.115616][ T5831] R13: 00007ffdea4dd338 R14: 0000000000000001 R15: 0000000000000001 [ 96.115630][ T5831] mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 96.639049][ T5831] overlayfs: upper