./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4182353244 <...> Warning: Permanently added '10.128.10.59' (ED25519) to the list of known hosts. execve("./syz-executor4182353244", ["./syz-executor4182353244"], 0x7ffd2fe36130 /* 10 vars */) = 0 brk(NULL) = 0x55558e784000 brk(0x55558e784e00) = 0x55558e784e00 arch_prctl(ARCH_SET_FS, 0x55558e784480) = 0 set_tid_address(0x55558e784750) = 5828 set_robust_list(0x55558e784760, 24) = 0 rseq(0x55558e784da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4182353244", 4096) = 28 getrandom("\x88\x85\x5e\xf7\x0b\x32\xa6\x1d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558e784e00 brk(0x55558e7a5e00) = 0x55558e7a5e00 brk(0x55558e7a6000) = 0x55558e7a6000 mprotect(0x7f39ccb63000, 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=0x7f39ccab8150, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f39ccac01c0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f39ccab8150, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f39ccac01c0}, 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) = 0x7f39c4600000 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(0x7f39c4600000, 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 [ 74.955803][ T5828] loop0: detected capacity change from 0 to 32768 [ 74.989538][ T5828] ======================================================= [ 74.989538][ T5828] WARNING: The mand mount option has been deprecated and [ 74.989538][ T5828] and is ignored by this kernel. Remove the mand [ 74.989538][ T5828] option from the mount to silence this warning. [ 74.989538][ T5828] ======================================================= mount("/dev/loop0", "./file1", "ocfs2", MS_NOEXEC|MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME|MS_POSIXACL, "acl,heartbeat=none,errors=remount-ro,coherency=full,coherency=full,localflocks,intr,noacl,") = 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", 0777) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- mkdir("./file1", 0777) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 75.058604][ T5828] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 75.122045][ T5828] overlayfs: failed to create directory ./file1/work (errno: 28); mounting read-only [ 75.132799][ T5828] [ 75.135137][ T5828] ====================================================== [ 75.142139][ T5828] WARNING: possible circular locking dependency detected [ 75.149164][ T5828] 6.15.0-rc2-syzkaller-00087-gcfb2e2c57aef #0 Not tainted [ 75.156262][ T5828] ------------------------------------------------------ [ 75.163268][ T5828] syz-executor418/5828 is trying to acquire lock: [ 75.169670][ T5828] ffff88807b27c2c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x12b/0x2800 [ 75.183182][ T5828] [ 75.183182][ T5828] but task is already holding lock: [ 75.190543][ T5828] ffff88807b27dc78 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x635/0x1940 [ 75.200037][ T5828] [ 75.200037][ T5828] which lock already depends on the new lock. [ 75.200037][ T5828] [ 75.210471][ T5828] [ 75.210471][ T5828] the existing dependency chain (in reverse order) is: [ 75.219480][ T5828] [ 75.219480][ T5828] -> #4 (&oi->ip_xattr_sem){++++}-{4:4}: [ 75.227305][ T5828] lock_acquire+0x116/0x2f0 [ 75.232340][ T5828] down_write+0x9c/0x220 [ 75.237118][ T5828] ocfs2_xattr_set_handle+0x53b/0xa20 [ 75.243094][ T5828] ocfs2_init_security_set+0xbd/0xd0 [ 75.248898][ T5828] ocfs2_mknod+0x1cd3/0x2b30 [ 75.254006][ T5828] ocfs2_mkdir+0x19c/0x470 [ 75.258939][ T5828] vfs_mkdir+0x2f9/0x500 [ 75.263713][ T5828] do_mkdirat+0x273/0x3f0 [ 75.268570][ T5828] __x64_sys_mkdir+0x6c/0x80 [ 75.273699][ T5828] do_syscall_64+0xf3/0x230 [ 75.278727][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.285156][ T5828] [ 75.285156][ T5828] -> #3 (jbd2_handle){.+.+}-{0:0}: [ 75.292473][ T5828] lock_acquire+0x116/0x2f0 [ 75.297502][ T5828] start_this_handle+0x1ee4/0x21a0 [ 75.303151][ T5828] jbd2__journal_start+0x2da/0x5d0 [ 75.308794][ T5828] jbd2_journal_start+0x29/0x40 [ 75.314175][ T5828] ocfs2_start_trans+0x3cd/0x710 [ 75.319644][ T5828] ocfs2_reserve_suballoc_bits+0xa54/0x4f30 [ 75.326067][ T5828] ocfs2_reserve_new_metadata_blocks+0x41c/0x9b0 [ 75.332928][ T5828] ocfs2_mknod+0x143e/0x2b30 [ 75.338049][ T5828] ocfs2_mkdir+0x19c/0x470 [ 75.342998][ T5828] vfs_mkdir+0x2f9/0x500 [ 75.347794][ T5828] do_mkdirat+0x273/0x3f0 [ 75.352655][ T5828] __x64_sys_mkdir+0x6c/0x80 [ 75.357775][ T5828] do_syscall_64+0xf3/0x230 [ 75.362805][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.369217][ T5828] [ 75.369217][ T5828] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: [ 75.377738][ T5828] lock_acquire+0x116/0x2f0 [ 75.382775][ T5828] down_read+0xb3/0xa50 [ 75.387475][ T5828] ocfs2_start_trans+0x3c2/0x710 [ 75.392950][ T5828] ocfs2_reserve_suballoc_bits+0xa54/0x4f30 [ 75.399375][ T5828] ocfs2_reserve_new_metadata_blocks+0x41c/0x9b0 [ 75.406223][ T5828] ocfs2_mknod+0x143e/0x2b30 [ 75.411334][ T5828] ocfs2_mkdir+0x19c/0x470 [ 75.416268][ T5828] vfs_mkdir+0x2f9/0x500 [ 75.421036][ T5828] do_mkdirat+0x273/0x3f0 [ 75.425893][ T5828] __x64_sys_mkdir+0x6c/0x80 [ 75.431010][ T5828] do_syscall_64+0xf3/0x230 [ 75.436036][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.442539][ T5828] [ 75.442539][ T5828] -> #1 (sb_internal#2){.+.+}-{0:0}: [ 75.450038][ T5828] lock_acquire+0x116/0x2f0 [ 75.455059][ T5828] ocfs2_start_trans+0x2bd/0x710 [ 75.460527][ T5828] ocfs2_mknod+0x1510/0x2b30 [ 75.465649][ T5828] ocfs2_mkdir+0x19c/0x470 [ 75.470590][ T5828] vfs_mkdir+0x2f9/0x500 [ 75.475363][ T5828] do_mkdirat+0x273/0x3f0 [ 75.480312][ T5828] __x64_sys_mkdir+0x6c/0x80 [ 75.485453][ T5828] do_syscall_64+0xf3/0x230 [ 75.490478][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.496891][ T5828] [ 75.496891][ T5828] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}: [ 75.507431][ T5828] validate_chain+0xa69/0x24e0 [ 75.512715][ T5828] __lock_acquire+0xad5/0xd80 [ 75.517914][ T5828] lock_acquire+0x116/0x2f0 [ 75.522937][ T5828] down_write+0x9c/0x220 [ 75.527701][ T5828] ocfs2_reserve_local_alloc_bits+0x12b/0x2800 [ 75.534369][ T5828] ocfs2_reserve_clusters_with_limit+0x1ba/0xb60 [ 75.541229][ T5828] ocfs2_init_xattr_set_ctxt+0x435/0x900 [ 75.547408][ T5828] ocfs2_xattr_set+0xf52/0x1940 [ 75.552779][ T5828] __vfs_setxattr+0x468/0x4a0 [ 75.558060][ T5828] __vfs_setxattr_noperm+0x12e/0x660 [ 75.563859][ T5828] vfs_setxattr+0x223/0x430 [ 75.568883][ T5828] ovl_init_uuid_xattr+0x518/0x900 [ 75.574513][ T5828] ovl_fill_super+0x2d5c/0x39f0 [ 75.579880][ T5828] get_tree_nodev+0xb7/0x140 [ 75.584987][ T5828] vfs_get_tree+0x90/0x2b0 [ 75.589920][ T5828] do_new_mount+0x2cf/0xb70 [ 75.594938][ T5828] __se_sys_mount+0x38c/0x400 [ 75.600128][ T5828] do_syscall_64+0xf3/0x230 [ 75.605159][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.611573][ T5828] [ 75.611573][ T5828] other info that might help us debug this: [ 75.611573][ T5828] [ 75.621798][ T5828] Chain exists of: [ 75.621798][ T5828] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5 --> jbd2_handle --> &oi->ip_xattr_sem [ 75.621798][ T5828] [ 75.637547][ T5828] Possible unsafe locking scenario: [ 75.637547][ T5828] [ 75.644989][ T5828] CPU0 CPU1 [ 75.650342][ T5828] ---- ---- [ 75.655699][ T5828] lock(&oi->ip_xattr_sem); [ 75.660293][ T5828] lock(jbd2_handle); [ 75.666878][ T5828] lock(&oi->ip_xattr_sem); [ 75.673983][ T5828] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); [ 75.681271][ T5828] [ 75.681271][ T5828] *** DEADLOCK *** [ 75.681271][ T5828] [ 75.689409][ T5828] 3 locks held by syz-executor418/5828: [ 75.694949][ T5828] #0: ffff88806fc200e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0 [ 75.705088][ T5828] #1: ffff88807b27df40 (&sb->s_type->i_mutex_key#16){+.+.}-{4:4}, at: vfs_setxattr+0x1e3/0x430 [ 75.715545][ T5828] #2: ffff88807b27dc78 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x635/0x1940 [ 75.725465][ T5828] [ 75.725465][ T5828] stack backtrace: [ 75.731360][ T5828] CPU: 1 UID: 0 PID: 5828 Comm: syz-executor418 Not tainted 6.15.0-rc2-syzkaller-00087-gcfb2e2c57aef #0 PREEMPT(full) [ 75.731379][ T5828] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 75.731393][ T5828] Call Trace: [ 75.731401][ T5828] [ 75.731408][ T5828] dump_stack_lvl+0x241/0x360 [ 75.731436][ T5828] ? __pfx_dump_stack_lvl+0x10/0x10 [ 75.731457][ T5828] ? __pfx__printk+0x10/0x10 [ 75.731478][ T5828] ? print_lock+0x171/0x1a0 [ 75.731497][ T5828] print_circular_bug+0x2e1/0x300 [ 75.731518][ T5828] check_noncircular+0x142/0x160 [ 75.731545][ T5828] validate_chain+0xa69/0x24e0 [ 75.731566][ T5828] ? do_raw_spin_lock+0x151/0x370 [ 75.731593][ T5828] __lock_acquire+0xad5/0xd80 [ 75.731611][ T5828] lock_acquire+0x116/0x2f0 [ 75.731624][ T5828] ? ocfs2_reserve_local_alloc_bits+0x12b/0x2800 [ 75.731642][ T5828] ? unwind_get_return_address+0x4d/0x90 [ 75.731663][ T5828] down_write+0x9c/0x220 [ 75.731703][ T5828] ? ocfs2_reserve_local_alloc_bits+0x12b/0x2800 [ 75.731720][ T5828] ? __pfx_down_write+0x10/0x10 [ 75.731743][ T5828] ? stack_trace_save+0x11a/0x1d0 [ 75.731766][ T5828] ocfs2_reserve_local_alloc_bits+0x12b/0x2800 [ 75.731786][ T5828] ? check_noncircular+0xee/0x160 [ 75.731807][ T5828] ? lockdep_unlock+0x8d/0x120 [ 75.731833][ T5828] ? __pfx_ocfs2_reserve_local_alloc_bits+0x10/0x10 [ 75.731850][ T5828] ? vfs_get_tree+0x90/0x2b0 [ 75.731873][ T5828] ? do_new_mount+0x2cf/0xb70 [ 75.731897][ T5828] ? __lock_acquire+0xad5/0xd80 [ 75.731913][ T5828] ? do_raw_spin_lock+0x151/0x370 [ 75.731937][ T5828] ? do_raw_spin_unlock+0x13c/0x8b0 [ 75.731962][ T5828] ? _raw_spin_unlock+0x28/0x50 [ 75.731977][ T5828] ? ocfs2_alloc_should_use_local+0x155/0x320 [ 75.731994][ T5828] ocfs2_reserve_clusters_with_limit+0x1ba/0xb60 [ 75.732018][ T5828] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10 [ 75.732043][ T5828] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10 [ 75.732062][ T5828] ? __lock_acquire+0xad5/0xd80 [ 75.732079][ T5828] ocfs2_init_xattr_set_ctxt+0x435/0x900 [ 75.732105][ T5828] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10 [ 75.732129][ T5828] ? up_write+0x1ab/0x590 [ 75.732149][ T5828] ? __pfx_ocfs2_truncate_log_needs_flush+0x10/0x10 [ 75.732173][ T5828] ? __pfx_up_write+0x10/0x10 [ 75.732193][ T5828] ? __kmalloc_cache_noprof+0x236/0x370 [ 75.732210][ T5828] ? ocfs2_xattr_set+0x4d7/0x1940 [ 75.732233][ T5828] ocfs2_xattr_set+0xf52/0x1940 [ 75.732263][ T5828] ? __pfx_ocfs2_xattr_set+0x10/0x10 [ 75.732292][ T5828] ? __kernel_text_address+0xd/0x40 [ 75.732317][ T5828] ? __pfx_stack_trace_save+0x10/0x10 [ 75.732354][ T5828] ? smk_tskacc+0x300/0x370 [ 75.732380][ T5828] ? posix_xattr_acl+0xa9/0xd0 [ 75.732396][ T5828] ? evm_protect_xattr+0x4c0/0xb50 [ 75.732413][ T5828] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10 [ 75.732438][ T5828] __vfs_setxattr+0x468/0x4a0 [ 75.732460][ T5828] __vfs_setxattr_noperm+0x12e/0x660 [ 75.732480][ T5828] vfs_setxattr+0x223/0x430 [ 75.732501][ T5828] ? __pfx_vfs_setxattr+0x10/0x10 [ 75.732518][ T5828] ? __pfx_vfs_getxattr+0x10/0x10 [ 75.732544][ T5828] ovl_init_uuid_xattr+0x518/0x900 [ 75.732573][ T5828] ? __pfx_ovl_init_uuid_xattr+0x10/0x10 [ 75.732603][ T5828] ovl_fill_super+0x2d5c/0x39f0 [ 75.732627][ T5828] ? shrinker_register+0x118/0x230 [ 75.732656][ T5828] ? __pfx_ovl_fill_super+0x10/0x10 [ 75.732675][ T5828] ? __raw_spin_lock_init+0x45/0x100 [ 75.732703][ T5828] ? sget_fc+0x960/0xa50 [ 75.732724][ T5828] ? __pfx_set_anon_super_fc+0x10/0x10 [ 75.732747][ T5828] ? __pfx_ovl_fill_super+0x10/0x10 [ 75.732762][ T5828] get_tree_nodev+0xb7/0x140 [ 75.732786][ T5828] vfs_get_tree+0x90/0x2b0 [ 75.732811][ T5828] do_new_mount+0x2cf/0xb70 [ 75.732831][ T5828] ? __pfx_do_new_mount+0x10/0x10 [ 75.732852][ T5828] __se_sys_mount+0x38c/0x400 [ 75.732885][ T5828] ? __pfx___se_sys_mount+0x10/0x10 [ 75.732904][ T5828] ? __x64_sys_mount+0x20/0xc0 [ 75.732933][ T5828] do_syscall_64+0xf3/0x230 [ 75.732951][ T5828] ? clear_bhb_loop+0x45/0xa0 [ 75.732968][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.732986][ T5828] RIP: 0033:0x7f39ccaec1b9 [ 75.733005][ T5828] 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 [ 75.733017][ T5828] RSP: 002b:00007ffc8f19d378 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 75.733032][ T5828] RAX: ffffffffffffffda RBX: 6e6f3d74726f7078 RCX: 00007f39ccaec1b9 [ 75.733043][ T5828] RDX: 0000200000000040 RSI: 0000200000000000 RDI: 0000000000000000 [ 75.733053][ T5828] RBP: 00007ffc8f19d388 R08: 00002000000002c0 R09: 00007f39ccab8150 mount(NULL, "./file0", "overlay", 0, "workdir=./file1,upperdir=./file0,lowerdir=.,nfs_export=on,,") = 0 exit_group(0) = ? +++ exited with 0 +++ [