./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3618643232 <...> Warning: Permanently added '10.128.1.141' (ED25519) to the list of known hosts. execve("./syz-executor3618643232", ["./syz-executor3618643232"], 0x7ffd2452d3d0 /* 10 vars */) = 0 brk(NULL) = 0x55558dd23000 brk(0x55558dd23e00) = 0x55558dd23e00 arch_prctl(ARCH_SET_FS, 0x55558dd23480) = 0 set_tid_address(0x55558dd23750) = 5817 set_robust_list(0x55558dd23760, 24) = 0 rseq(0x55558dd23da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3618643232", 4096) = 28 getrandom("\x7d\x66\xe3\xc2\xb8\xcc\xb8\xf1", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558dd23e00 brk(0x55558dd44e00) = 0x55558dd44e00 brk(0x55558dd45000) = 0x55558dd45000 mprotect(0x7f604eed7000, 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=0x7f604ee2c020, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f604ee34090}, NULL, 8) = 0 executing program rt_sigaction(SIGBUS, {sa_handler=0x7f604ee2c020, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f604ee34090}, NULL, 8) = 0 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) = 0x7f6046a00000 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(0x7f6046a00000, 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 syzkaller login: [ 86.089600][ T5817] loop0: detected capacity change from 0 to 32768 [ 86.125767][ T5817] ======================================================= [ 86.125767][ T5817] WARNING: The mand mount option has been deprecated and mount("/dev/loop0", "./file1", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "acl,heartbeat=none,nouser_xattr,coherency=full,data=writeback,localalloc=00000000000000000001,acl,no"...) = 0 openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [ 86.125767][ T5817] and is ignored by this kernel. Remove the mand [ 86.125767][ T5817] option from the mount to silence this warning. [ 86.125767][ T5817] ======================================================= [ 86.178795][ T5817] ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode. chdir("./file1") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) mkdir("./file0", 0100) = 0 mkdir("./file2", 0777) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 86.236640][ T5817] overlayfs: upper fs does not support tmpfile. [ 86.245231][ T5817] overlayfs: upper fs does not support RENAME_WHITEOUT. [ 86.252553][ T5817] [ 86.254882][ T5817] ====================================================== [ 86.261889][ T5817] WARNING: possible circular locking dependency detected [ 86.268909][ T5817] 6.15.0-rc4-syzkaller-00021-gca91b9500108 #0 Not tainted [ 86.276003][ T5817] ------------------------------------------------------ [ 86.283028][ T5817] syz-executor361/5817 is trying to acquire lock: [ 86.289430][ T5817] ffff88807ad7d100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x15e/0x45f0 [ 86.302766][ T5817] [ 86.302766][ T5817] but task is already holding lock: [ 86.310144][ T5817] ffff88807adf86f8 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0 [ 86.319625][ T5817] [ 86.319625][ T5817] which lock already depends on the new lock. [ 86.319625][ T5817] [ 86.330015][ T5817] [ 86.330015][ T5817] the existing dependency chain (in reverse order) is: [ 86.339015][ T5817] [ 86.339015][ T5817] -> #4 (&oi->ip_xattr_sem){+.+.}-{4:4}: [ 86.346832][ T5817] lock_acquire+0x120/0x360 [ 86.351852][ T5817] down_write+0x96/0x1f0 [ 86.356620][ T5817] ocfs2_xattr_set_handle+0x3b0/0x7a0 [ 86.362505][ T5817] ocfs2_init_security_set+0xbd/0xe0 [ 86.368306][ T5817] ocfs2_mknod+0x137f/0x2050 [ 86.373415][ T5817] ocfs2_mkdir+0x191/0x440 [ 86.378349][ T5817] vfs_mkdir+0x303/0x510 [ 86.383107][ T5817] do_mkdirat+0x247/0x590 [ 86.387979][ T5817] __x64_sys_mkdir+0x6c/0x80 [ 86.393085][ T5817] do_syscall_64+0xf6/0x210 [ 86.398365][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.404770][ T5817] [ 86.404770][ T5817] -> #3 (jbd2_handle){.+.+}-{0:0}: [ 86.412082][ T5817] lock_acquire+0x120/0x360 [ 86.417101][ T5817] start_this_handle+0x1fa7/0x21c0 [ 86.422723][ T5817] jbd2__journal_start+0x2c1/0x5b0 [ 86.428345][ T5817] jbd2_journal_start+0x2a/0x40 [ 86.433708][ T5817] ocfs2_start_trans+0x376/0x6d0 [ 86.439167][ T5817] ocfs2_reserve_suballoc_bits+0x711/0x45f0 [ 86.445594][ T5817] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 86.452464][ T5817] ocfs2_mknod+0xe08/0x2050 [ 86.457505][ T5817] ocfs2_mkdir+0x191/0x440 [ 86.462458][ T5817] vfs_mkdir+0x303/0x510 [ 86.467236][ T5817] do_mkdirat+0x247/0x590 [ 86.472122][ T5817] __x64_sys_mkdir+0x6c/0x80 [ 86.477252][ T5817] do_syscall_64+0xf6/0x210 [ 86.482275][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.488683][ T5817] [ 86.488683][ T5817] -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: [ 86.497198][ T5817] lock_acquire+0x120/0x360 [ 86.502235][ T5817] down_read+0x46/0x2e0 [ 86.506916][ T5817] ocfs2_start_trans+0x36a/0x6d0 [ 86.512371][ T5817] ocfs2_reserve_suballoc_bits+0x711/0x45f0 [ 86.518792][ T5817] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 86.525651][ T5817] ocfs2_mknod+0xe08/0x2050 [ 86.530673][ T5817] ocfs2_mkdir+0x191/0x440 [ 86.535609][ T5817] vfs_mkdir+0x303/0x510 [ 86.540370][ T5817] do_mkdirat+0x247/0x590 [ 86.545226][ T5817] __x64_sys_mkdir+0x6c/0x80 [ 86.550351][ T5817] do_syscall_64+0xf6/0x210 [ 86.555370][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.561773][ T5817] [ 86.561773][ T5817] -> #1 (sb_internal#2){.+.+}-{0:0}: [ 86.569262][ T5817] lock_acquire+0x120/0x360 [ 86.574305][ T5817] ocfs2_start_trans+0x26b/0x6d0 [ 86.579752][ T5817] ocfs2_reserve_suballoc_bits+0x711/0x45f0 [ 86.586163][ T5817] ocfs2_reserve_new_metadata_blocks+0x403/0x940 [ 86.593009][ T5817] ocfs2_mknod+0xe08/0x2050 [ 86.598029][ T5817] ocfs2_mkdir+0x191/0x440 [ 86.602964][ T5817] vfs_mkdir+0x303/0x510 [ 86.607721][ T5817] do_mkdirat+0x247/0x590 [ 86.612580][ T5817] __x64_sys_mkdir+0x6c/0x80 [ 86.617686][ T5817] do_syscall_64+0xf6/0x210 [ 86.622701][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.629122][ T5817] [ 86.629122][ T5817] -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}: [ 86.639648][ T5817] validate_chain+0xb9b/0x2140 [ 86.644941][ T5817] __lock_acquire+0xaac/0xd20 [ 86.650138][ T5817] lock_acquire+0x120/0x360 [ 86.655158][ T5817] down_write+0x96/0x1f0 [ 86.659916][ T5817] ocfs2_reserve_suballoc_bits+0x15e/0x45f0 [ 86.666328][ T5817] ocfs2_reserve_clusters_with_limit+0x2fb/0xba0 [ 86.673172][ T5817] ocfs2_init_xattr_set_ctxt+0x376/0x700 [ 86.679320][ T5817] ocfs2_xattr_set+0xb70/0x11f0 [ 86.684681][ T5817] __vfs_setxattr+0x439/0x480 [ 86.689882][ T5817] __vfs_setxattr_noperm+0x12d/0x660 [ 86.695692][ T5817] vfs_setxattr+0x16b/0x2f0 [ 86.700722][ T5817] ovl_get_workdir+0xb86/0x1700 [ 86.706093][ T5817] ovl_fill_super+0x1386/0x35d0 [ 86.711462][ T5817] get_tree_nodev+0xb8/0x150 [ 86.716584][ T5817] vfs_get_tree+0x8f/0x2b0 [ 86.721533][ T5817] do_new_mount+0x24a/0xa40 [ 86.726565][ T5817] __se_sys_mount+0x317/0x410 [ 86.731779][ T5817] do_syscall_64+0xf6/0x210 [ 86.736810][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.743223][ T5817] [ 86.743223][ T5817] other info that might help us debug this: [ 86.743223][ T5817] [ 86.753444][ T5817] Chain exists of: [ 86.753444][ T5817] &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4 --> jbd2_handle --> &oi->ip_xattr_sem [ 86.753444][ T5817] [ 86.769183][ T5817] Possible unsafe locking scenario: [ 86.769183][ T5817] [ 86.776622][ T5817] CPU0 CPU1 [ 86.781975][ T5817] ---- ---- [ 86.787328][ T5817] lock(&oi->ip_xattr_sem); [ 86.791916][ T5817] lock(jbd2_handle); [ 86.798504][ T5817] lock(&oi->ip_xattr_sem); [ 86.805610][ T5817] lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4); [ 86.812897][ T5817] [ 86.812897][ T5817] *** DEADLOCK *** [ 86.812897][ T5817] [ 86.821030][ T5817] 4 locks held by syz-executor361/5817: [ 86.826575][ T5817] #0: ffff888034cc60e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x204/0x970 [ 86.836691][ T5817] #1: ffff8880238da420 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 86.845845][ T5817] #2: ffff88807adf89c0 (&sb->s_type->i_mutex_key#16){++++}-{4:4}, at: vfs_setxattr+0x144/0x2f0 [ 86.856309][ T5817] #3: ffff88807adf86f8 (&oi->ip_xattr_sem){+.+.}-{4:4}, at: ocfs2_xattr_set+0x40f/0x11f0 [ 86.866269][ T5817] [ 86.866269][ T5817] stack backtrace: [ 86.872197][ T5817] CPU: 0 UID: 0 PID: 5817 Comm: syz-executor361 Not tainted 6.15.0-rc4-syzkaller-00021-gca91b9500108 #0 PREEMPT(full) [ 86.872214][ T5817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 86.872229][ T5817] Call Trace: [ 86.872237][ T5817] [ 86.872246][ T5817] dump_stack_lvl+0x189/0x250 [ 86.872273][ T5817] ? __pfx_dump_stack_lvl+0x10/0x10 [ 86.872291][ T5817] ? __pfx__printk+0x10/0x10 [ 86.872314][ T5817] ? print_lock_name+0xde/0x100 [ 86.872336][ T5817] print_circular_bug+0x2ee/0x310 [ 86.872360][ T5817] check_noncircular+0x134/0x160 [ 86.872383][ T5817] validate_chain+0xb9b/0x2140 [ 86.872404][ T5817] ? __mutex_unlock_slowpath+0x1cd/0x700 [ 86.872422][ T5817] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 86.872441][ T5817] __lock_acquire+0xaac/0xd20 [ 86.872460][ T5817] ? ocfs2_reserve_suballoc_bits+0x15e/0x45f0 [ 86.872481][ T5817] lock_acquire+0x120/0x360 [ 86.872498][ T5817] ? ocfs2_reserve_suballoc_bits+0x15e/0x45f0 [ 86.872521][ T5817] ? unwind_next_frame+0xa5/0x2390 [ 86.872536][ T5817] ? __kasan_check_byte+0x12/0x40 [ 86.872559][ T5817] down_write+0x96/0x1f0 [ 86.872575][ T5817] ? ocfs2_reserve_suballoc_bits+0x15e/0x45f0 [ 86.872596][ T5817] ? __pfx_down_write+0x10/0x10 [ 86.872612][ T5817] ? is_bpf_text_address+0x26/0x2b0 [ 86.872629][ T5817] ? rcu_is_watching+0x15/0xb0 [ 86.872648][ T5817] ? __kasan_check_byte+0x12/0x40 [ 86.872668][ T5817] ? rcu_is_watching+0x15/0xb0 [ 86.872688][ T5817] ocfs2_reserve_suballoc_bits+0x15e/0x45f0 [ 86.872711][ T5817] ? is_bpf_text_address+0x292/0x2b0 [ 86.872730][ T5817] ? kernel_text_address+0xa5/0xe0 [ 86.872747][ T5817] ? __kernel_text_address+0xd/0x40 [ 86.872763][ T5817] ? unwind_get_return_address+0x4d/0x90 [ 86.872778][ T5817] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 86.872792][ T5817] ? arch_stack_walk+0xfc/0x150 [ 86.872819][ T5817] ? __pfx_ocfs2_reserve_suballoc_bits+0x10/0x10 [ 86.872839][ T5817] ? stack_trace_save+0x9c/0xe0 [ 86.872851][ T5817] ? __pfx_stack_trace_save+0x10/0x10 [ 86.872865][ T5817] ? check_path+0x21/0x40 [ 86.872884][ T5817] ? check_noncircular+0xe0/0x160 [ 86.872906][ T5817] ? lockdep_unlock+0x89/0x120 [ 86.872921][ T5817] ? validate_chain+0x897/0x2140 [ 86.872942][ T5817] ? do_new_mount+0x24a/0xa40 [ 86.872968][ T5817] ? __lock_acquire+0xaac/0xd20 [ 86.872992][ T5817] ? do_raw_spin_unlock+0x122/0x240 [ 86.873006][ T5817] ? _raw_spin_unlock+0x28/0x50 [ 86.873027][ T5817] ? ocfs2_alloc_should_use_local+0x152/0x310 [ 86.873044][ T5817] ? ocfs2_reserve_clusters_with_limit+0x16b/0xba0 [ 86.873067][ T5817] ocfs2_reserve_clusters_with_limit+0x2fb/0xba0 [ 86.873091][ T5817] ? __pfx_ocfs2_reserve_clusters_with_limit+0x10/0x10 [ 86.873117][ T5817] ? __pfx_ocfs2_calc_xattr_set_need+0x10/0x10 [ 86.873136][ T5817] ? __lock_acquire+0xaac/0xd20 [ 86.873156][ T5817] ocfs2_init_xattr_set_ctxt+0x376/0x700 [ 86.873173][ T5817] ? __pfx_ocfs2_init_xattr_set_ctxt+0x10/0x10 [ 86.873190][ T5817] ? ocfs2_xattr_set+0xb36/0x11f0 [ 86.873205][ T5817] ? up_write+0x1c4/0x420 [ 86.873216][ T5817] ? ocfs2_xattr_set+0x334/0x11f0 [ 86.873230][ T5817] ocfs2_xattr_set+0xb70/0x11f0 [ 86.873252][ T5817] ? __pfx_ocfs2_xattr_set+0x10/0x10 [ 86.873266][ T5817] ? up+0xde/0x150 [ 86.873282][ T5817] ? smack_log+0xef/0x3f0 [ 86.873303][ T5817] ? smk_access+0x14c/0x4e0 [ 86.873322][ T5817] ? smk_tskacc+0x2fc/0x370 [ 86.873343][ T5817] ? posix_xattr_acl+0x93/0xc0 [ 86.873360][ T5817] ? evm_protect_xattr+0x4d4/0xa90 [ 86.873377][ T5817] ? __pfx_evm_protect_xattr+0x10/0x10 [ 86.873392][ T5817] ? safesetid_security_capable+0xa9/0x1a0 [ 86.873407][ T5817] ? __pfx_ocfs2_xattr_trusted_set+0x10/0x10 [ 86.873422][ T5817] __vfs_setxattr+0x439/0x480 [ 86.873447][ T5817] __vfs_setxattr_noperm+0x12d/0x660 [ 86.873470][ T5817] vfs_setxattr+0x16b/0x2f0 [ 86.873492][ T5817] ? __pfx_vfs_setxattr+0x10/0x10 [ 86.873512][ T5817] ? up_write+0x1c4/0x420 [ 86.873526][ T5817] ovl_get_workdir+0xb86/0x1700 [ 86.873547][ T5817] ? __pfx_ovl_get_workdir+0x10/0x10 [ 86.873573][ T5817] ? do_raw_spin_unlock+0x122/0x240 [ 86.873588][ T5817] ? _raw_spin_unlock+0x28/0x50 [ 86.873608][ T5817] ? ovl_inuse_trylock+0xae/0xf0 [ 86.873626][ T5817] ovl_fill_super+0x1386/0x35d0 [ 86.873647][ T5817] ? rcu_is_watching+0x15/0xb0 [ 86.873669][ T5817] ? shrinker_register+0x124/0x230 [ 86.873688][ T5817] ? __pfx_ovl_fill_super+0x10/0x10 [ 86.873705][ T5817] ? __pfx___mutex_lock+0x10/0x10 [ 86.873720][ T5817] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 86.873738][ T5817] ? __raw_spin_lock_init+0x45/0x100 [ 86.873756][ T5817] ? sget_fc+0x962/0xa40 [ 86.873772][ T5817] ? __pfx_set_anon_super_fc+0x10/0x10 [ 86.873789][ T5817] ? __pfx_ovl_fill_super+0x10/0x10 [ 86.873811][ T5817] get_tree_nodev+0xb8/0x150 [ 86.873829][ T5817] vfs_get_tree+0x8f/0x2b0 [ 86.873848][ T5817] do_new_mount+0x24a/0xa40 [ 86.873871][ T5817] __se_sys_mount+0x317/0x410 [ 86.873893][ T5817] ? __pfx___se_sys_mount+0x10/0x10 [ 86.873915][ T5817] ? __x64_sys_mount+0x20/0xc0 [ 86.873936][ T5817] do_syscall_64+0xf6/0x210 [ 86.873953][ T5817] ? clear_bhb_loop+0x45/0xa0 [ 86.873968][ T5817] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.873982][ T5817] RIP: 0033:0x7f604ee600b9 [ 86.873999][ T5817] 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 [ 86.874010][ T5817] RSP: 002b:00007fff1d9ab7e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 86.874025][ T5817] RAX: ffffffffffffffda RBX: 00007fff1d9ab7f0 RCX: 00007f604ee600b9 [ 86.874035][ T5817] RDX: 0000200000000000 RSI: 0000200000000040 RDI: 0000000000000000 [ 86.874044][ T5817] RBP: 00007fff1d9ab7f8 R08: 0000200000000140 R09: 00007f604ee2c020 [ 86.874054][ T5817] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 86.874062][ T5817] R13: 00007fff1d9aba58 R14: 0000000000000001 R15: 0000000000000001 mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,,") = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 86.874076][ T58