./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor851500406 <...> Warning: Permanently added '10.128.1.55' (ED25519) to the list of known hosts. execve("./syz-executor851500406", ["./syz-executor851500406"], 0x7fffc70a7970 /* 10 vars */) = 0 brk(NULL) = 0x555583959000 brk(0x555583959d00) = 0x555583959d00 arch_prctl(ARCH_SET_FS, 0x555583959380) = 0 set_tid_address(0x555583959650) = 5826 set_robust_list(0x555583959660, 24) = 0 rseq(0x555583959ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor851500406", 4096) = 27 getrandom("\xae\xfd\x68\x57\x7c\x53\xd2\xae", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555583959d00 brk(0x55558397ad00) = 0x55558397ad00 brk(0x55558397b000) = 0x55558397b000 mprotect(0x7fdf9779c000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 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) = 0x7fdf8f200000 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(0x7fdf8f200000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 [ 60.629265][ T5826] loop0: detected capacity change from 0 to 32768 [ 60.665757][ T5826] ======================================================= [ 60.665757][ T5826] WARNING: The mand mount option has been deprecated and mkdir("./file1", 0777) = 0 [ 60.665757][ T5826] and is ignored by this kernel. Remove the mand [ 60.665757][ T5826] option from the mount to silence this warning. [ 60.665757][ T5826] ======================================================= [ 60.714314][ T5826] 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 mkdirat(AT_FDCWD, "./file1", 000) = 0 mkdir("./bus", 000) = 0 [ 60.737947][ T5826] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 60.778782][ T5826] overlayfs: upper fs does not support tmpfile. [ 60.787669][ T5826] overlayfs: upper fs does not support RENAME_WHITEOUT. [ 60.795328][ T5826] [ 60.797660][ T5826] ====================================================== [ 60.804657][ T5826] WARNING: possible circular locking dependency detected [ 60.811691][ T5826] 6.14.0-rc5-syzkaller-00023-gbb2281fb05e5 #0 Not tainted [ 60.818784][ T5826] ------------------------------------------------------ [ 60.825782][ T5826] syz-executor851/5826 is trying to acquire lock: [ 60.832171][ T5826] ffff88807cf9c2c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: ocfs2_reserve_local_alloc_bits+0x135/0x28d0 [ 60.845663][ T5826] [ 60.845663][ T5826] but task is already holding lock: [ 60.853021][ T5826] ffff888076011538 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x633/0x1930 [ 60.862492][ T5826] [ 60.862492][ T5826] which lock already depends on the new lock. [ 60.862492][ T5826] [ 60.872872][ T5826] [ 60.872872][ T5826] the existing dependency chain (in reverse order) is: [ 60.881867][ T5826] [ 60.881867][ T5826] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}: [ 60.889684][ T5826] lock_acquire+0x1ed/0x550 [ 60.894697][ T5826] down_write+0x99/0x220 [ 60.899457][ T5826] ocfs2_xattr_set_handle+0x539/0xa10 [ 60.905339][ T5826] ocfs2_init_security_set+0xbd/0xd0 [ 60.911127][ T5826] ocfs2_mknod+0x1ccf/0x2b30 [ 60.916224][ T5826] ocfs2_mkdir+0x1ab/0x470 [ 60.921152][ T5826] vfs_mkdir+0x2f9/0x4f0 [ 60.925900][ T5826] do_mkdirat+0x264/0x3a0 [ 60.930732][ T5826] __x64_sys_mkdirat+0x87/0xa0 [ 60.935996][ T5826] do_syscall_64+0xf3/0x230 [ 60.941009][ T5826] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 60.947430][ T5826] [ 60.947430][ T5826] -> #3 (jbd2_handle){.+.+}-{0:0}: [ 60.954715][ T5826] lock_acquire+0x1ed/0x550 [ 60.959721][ T5826] start_this_handle+0x1eb4/0x2110 [ 60.965335][ T5826] jbd2__journal_start+0x2da/0x5d0 [ 60.970948][ T5826] jbd2_journal_start+0x29/0x40 [ 60.976304][ T5826] ocfs2_start_trans+0x3c9/0x700 [ 60.981741][ T5826] ocfs2_reserve_suballoc_bits+0x9f6/0x4e70 [ 60.988149][ T5826] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0 [ 60.994987][ T5826] ocfs2_mknod+0x143a/0x2b30 [ 61.000102][ T5826] ocfs2_mkdir+0x1ab/0x470 [ 61.005026][ T5826] vfs_mkdir+0x2f9/0x4f0 [ 61.009830][ T5826] do_mkdirat+0x264/0x3a0 [ 61.014672][ T5826] __x64_sys_mkdirat+0x87/0xa0 [ 61.019945][ T5826] do_syscall_64+0xf3/0x230 [ 61.024958][ T5826] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 61.031354][ T5826] [ 61.031354][ T5826] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: [ 61.039934][ T5826] lock_acquire+0x1ed/0x550 [ 61.044958][ T5826] down_read+0xb1/0xa40 [ 61.049620][ T5826] ocfs2_start_trans+0x3be/0x700 [ 61.055090][ T5826] ocfs2_reserve_suballoc_bits+0x9f6/0x4e70 [ 61.061488][ T5826] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0 [ 61.068344][ T5826] ocfs2_mknod+0x143a/0x2b30 [ 61.073446][ T5826] ocfs2_mkdir+0x1ab/0x470 [ 61.078392][ T5826] vfs_mkdir+0x2f9/0x4f0 [ 61.083167][ T5826] do_mkdirat+0x264/0x3a0 [ 61.088013][ T5826] __x64_sys_mkdirat+0x87/0xa0 [ 61.093281][ T5826] do_syscall_64+0xf3/0x230 [ 61.098291][ T5826] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 61.104694][ T5826] [ 61.104694][ T5826] -> #1 (sb_internal#2){.+.+}-{0:0}: [ 61.112147][ T5826] lock_acquire+0x1ed/0x550 [ 61.117162][ T5826] ocfs2_start_trans+0x2b9/0x700 [ 61.122602][ T5826] ocfs2_mknod+0x150c/0x2b30 [ 61.127698][ T5826] ocfs2_mkdir+0x1ab/0x470 [ 61.132618][ T5826] vfs_mkdir+0x2f9/0x4f0 [ 61.137363][ T5826] do_mkdirat+0x264/0x3a0 [ 61.142196][ T5826] __x64_sys_mkdirat+0x87/0xa0 [ 61.147482][ T5826] do_syscall_64+0xf3/0x230 [ 61.152487][ T5826] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 61.158886][ T5826] [ 61.158886][ T5826] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}: [ 61.169397][ T5826] validate_chain+0x18ef/0x5920 [ 61.174750][ T5826] __lock_acquire+0x1397/0x2100 [ 61.180106][ T5826] lock_acquire+0x1ed/0x550 [ 61.185113][ T5826] down_write+0x99/0x220 [ 61.189856][ T5826] ocfs2_reserve_local_alloc_bits+0x135/0x28d0 [ 61.196516][ T5826] ocfs2_reserve_clusters_with_limit+0x1b8/0xb60 [ 61.203343][ T5826] ocfs2_init_xattr_set_ctxt+0x433/0x8f0 [ 61.209476][ T5826] ocfs2_xattr_set+0xf4e/0x1930 [ 61.214831][ T5826] __vfs_setxattr+0x468/0x4a0 [ 61.220011][ T5826] __vfs_setxattr_noperm+0x12e/0x660 [ 61.225816][ T5826] vfs_setxattr+0x221/0x430 [ 61.230821][ T5826] ovl_get_workdir+0xda0/0x1930 [ 61.236174][ T5826] ovl_fill_super+0x12b3/0x3640 [ 61.241523][ T5826] get_tree_nodev+0xb7/0x140 [ 61.246616][ T5826] vfs_get_tree+0x90/0x2b0 [ 61.251535][ T5826] do_new_mount+0x2be/0xb40 [ 61.256541][ T5826] __se_sys_mount+0x2d6/0x3c0 [ 61.261726][ T5826] do_syscall_64+0xf3/0x230 [ 61.266732][ T5826] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 61.273124][ T5826] [ 61.273124][ T5826] other info that might help us debug this: [ 61.273124][ T5826] [ 61.283418][ T5826] Chain exists of: [ 61.283418][ T5826] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5 --> jbd2_handle --> &oi->ip_xattr_sem [ 61.283418][ T5826] [ 61.299149][ T5826] Possible unsafe locking scenario: [ 61.299149][ T5826] [ 61.306576][ T5826] CPU0 CPU1 [ 61.311919][ T5826] ---- ---- [ 61.317264][ T5826] lock(&oi->ip_xattr_sem); [ 61.321857][ T5826] lock(jbd2_handle); [ 61.328425][ T5826] lock(&oi->ip_xattr_sem); [ 61.335515][ T5826] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); [ 61.342780][ T5826] [ 61.342780][ T5826] *** DEADLOCK *** [ 61.342780][ T5826] [ 61.350898][ T5826] 4 locks held by syz-executor851/5826: [ 61.356418][ T5826] #0: ffff888041dac0e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0 [ 61.366493][ T5826] #1: ffff88803537e420 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 [ 61.375609][ T5826] #2: ffff888076011800 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x1e1/0x430 [ 61.386033][ T5826] #3: ffff888076011538 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x633/0x1930 [ 61.395931][ T5826] [ 61.395931][ T5826] stack backtrace: [ 61.401812][ T5826] CPU: 0 UID: 0 PID: 5826 Comm: syz-executor851 Not tainted 6.14.0-rc5-syzkaller-00023-gbb2281fb05e5 #0 [ 61.401824][ T5826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 61.401845][ T5826] Call Trace: [ 61.401850][ T5826] [ 61.401855][ T5826] dump_stack_lvl+0x241/0x360 [ 61.401868][ T5826] ? __pfx_dump_stack_lvl+0x10/0x10 [ 61.401877][ T5826] ? __pfx__printk+0x10/0x10 [ 61.401892][ T5826] print_circular_bug+0x13a/0x1b0 [ 61.401902][ T5826] check_noncircular+0x36a/0x4a0 [ 61.401913][ T5826] ? __pfx_check_noncircular+0x10/0x10 [ 61.401921][ T5826] ? lockdep_lock+0x123/0x2b0 [ 61.401935][ T5826] validate_chain+0x18ef/0x5920 [ 61.401944][ T5826] ? __pfx_validate_chain+0x10/0x10 [ 61.401956][ T5826] ? __pfx_validate_chain+0x10/0x10 [ 61.401966][ T5826] ? mark_lock+0x9a/0x360 [ 61.401981][ T5826] ? ocfs2_get_system_file_inode+0x1e3/0x840 [ 61.401995][ T5826] ? __pfx_lock_release+0x10/0x10 [ 61.402008][ T5826] ? mark_lock+0x9a/0x360 [ 61.402025][ T5826] __lock_acquire+0x1397/0x2100 [ 61.402040][ T5826] lock_acquire+0x1ed/0x550 [ 61.402051][ T5826] ? ocfs2_reserve_local_alloc_bits+0x135/0x28d0 [ 61.402066][ T5826] ? __pfx_lock_acquire+0x10/0x10 [ 61.402078][ T5826] ? __pfx___might_resched+0x10/0x10 [ 61.402089][ T5826] ? __pfx_ocfs2_get_system_file_inode+0x10/0x10 [ 61.402102][ T5826] ? __pfx_validate_chain+0x10/0x10 [ 61.402111][ T5826] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 61.402123][ T5826] down_write+0x99/0x220 [ 61.402137][ T5826] ? ocfs2_reserve_local_alloc_bits+0x135/0x28d0 [ 61.402149][ T5826] ? __pfx_down_write+0x10/0x10 [ 61.402164][ T5826] ocfs2_reserve_local_alloc_bits+0x135/0x28d0 [ 61.402179][ T5826] ? mark_lock+0x9a/0x360 [ 61.402192][ T5826] ? __lock_acquire+0x1397/0x2100 [ 61.402204][ T5826] ? __pfx_ocfs2_reserve_local_alloc_bits+0x10/0x10 [ 61.402221][ T5826] ? __pfx_lock_acquire+0x10/0x10 [ 61.402232][ T5826] ? ocfs2_alloc_should_use_local+0x155/0x320 [ 61.402245][ T5826] ? __pfx_lock_release+0x10/0x10 [ 61.402256][ T5826] ? do_raw_spin_lock+0x14f/0x370 [ 61.402267][ T5826] ? do_raw_spin_unlock+0x13c/0x8b0 [ 61.402278][ T5826] ? _raw_spin_unlock+0x28/0x50 [ 61.402288][ T5826] ? ocfs2_alloc_should_use_local+0x155/0x320 [ 61.402300][ T5826] ocfs2_reserve_clusters_with_limit+0x1b8/0xb60 [ 61.402312][ T5826] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10 [ 61.402323][ T5826] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10 [ 61.402337][ T5826] ? ocfs2_xattr_set+0xf00/0x1930 [ 61.402349][ T5826] ocfs2_init_xattr_set_ctxt+0x433/0x8f0 [ 61.402361][ T5826] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10 [ 61.402372][ T5826] ? up_write+0x1a9/0x590 [ 61.402381][ T5826] ? __pfx_ocfs2_truncate_log_needs_flush+0x10/0x10 [ 61.402391][ T5826] ? __pfx_up_write+0x10/0x10 [ 61.402401][ T5826] ocfs2_xattr_set+0xf4e/0x1930 [ 61.402415][ T5826] ? __pfx_ocfs2_xattr_set+0x10/0x10 [ 61.402431][ T5826] ? mark_lock+0x9a/0x360 [ 61.402447][ T5826] ? smk_tskacc+0x300/0x370 [ 61.402459][ T5826] ? posix_xattr_acl+0xa9/0xd0 [ 61.402469][ T5826] ? evm_protect_xattr+0x4be/0xb40 [ 61.402478][ T5826] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10 [ 61.402489][ T5826] __vfs_setxattr+0x468/0x4a0 [ 61.402506][ T5826] __vfs_setxattr_noperm+0x12e/0x660 [ 61.402520][ T5826] vfs_setxattr+0x221/0x430 [ 61.402535][ T5826] ? __pfx_vfs_setxattr+0x10/0x10 [ 61.402548][ T5826] ? _raw_spin_unlock+0x28/0x50 [ 61.402558][ T5826] ? dput+0x37/0x2b0 [ 61.402567][ T5826] ovl_get_workdir+0xda0/0x1930 [ 61.402581][ T5826] ? __pfx_ovl_get_workdir+0x10/0x10 [ 61.402593][ T5826] ? ovl_inuse_trylock+0xab/0xf0 [ 61.402604][ T5826] ? do_raw_spin_lock+0x14f/0x370 [ 61.402616][ T5826] ? _raw_spin_unlock+0x28/0x50 [ 61.402625][ T5826] ? ovl_inuse_trylock+0xab/0xf0 [ 61.402636][ T5826] ovl_fill_super+0x12b3/0x3640 [ 61.402652][ T5826] ? __pfx_ovl_fill_super+0x10/0x10 [ 61.402663][ T5826] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 61.402675][ T5826] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 61.402691][ T5826] ? sget_fc+0x960/0xa50 [ 61.402702][ T5826] ? __pfx_set_anon_super_fc+0x10/0x10 [ 61.402712][ T5826] ? __pfx_ovl_fill_super+0x10/0x10 [ 61.402723][ T5826] get_tree_nodev+0xb7/0x140 [ 61.402734][ T5826] vfs_get_tree+0x90/0x2b0 [ 61.402746][ T5826] do_new_mount+0x2be/0xb40 [ 61.402762][ T5826] ? __pfx_do_new_mount+0x10/0x10 [ 61.402776][ T5826] __se_sys_mount+0x2d6/0x3c0 [ 61.402786][ T5826] ? __pfx___se_sys_mount+0x10/0x10 [ 61.402794][ T5826] ? do_syscall_64+0x100/0x230 [ 61.402807][ T5826] ? __x64_sys_mount+0x20/0xc0 [ 61.402816][ T5826] do_syscall_64+0xf3/0x230 [ 61.402827][ T5826] ? clear_bhb_loop+0x35/0x90 [ 61.402842][ T5826] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 61.402857][ T5826] RIP: 0033:0x7fdf97725779 [ 61.402869][ T5826] 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 [ 61.402877][ T5826] RSP: 002b:00007ffce5e82208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 mount(NULL, "./bus", "overlay", 0, "workdir=./bus,lowerdir=./file0,upperdir=./file1,") = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 61.402887][ T5