./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3398024102 <...> DUID 00:04:76:8b:f6:84:a4:3b:36:39:6c:68:e7:10:38:dd:b7:2c forked to background, child pid 5491 [ 53.279355][ T5492] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.301756][ T5492] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 92.339919][ T975] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.60' (ED25519) to the list of known hosts. execve("./syz-executor3398024102", ["./syz-executor3398024102"], 0x7ffcaa5f9590 /* 10 vars */) = 0 brk(NULL) = 0x55556dc6e000 brk(0x55556dc6ed00) = 0x55556dc6ed00 arch_prctl(ARCH_SET_FS, 0x55556dc6e380) = 0 set_tid_address(0x55556dc6e650) = 5828 set_robust_list(0x55556dc6e660, 24) = 0 rseq(0x55556dc6eca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3398024102", 4096) = 28 getrandom("\x69\xde\x31\x0d\x0f\xcd\x1d\x8c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556dc6ed00 brk(0x55556dc8fd00) = 0x55556dc8fd00 brk(0x55556dc90000) = 0x55556dc90000 mprotect(0x7f7b879af000, 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) = 0x7f7b7f400000 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(0x7f7b7f400000, 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 [ 98.405179][ T5828] loop0: detected capacity change from 0 to 32768 [ 98.457473][ T5828] ======================================================= [ 98.457473][ T5828] WARNING: The mand mount option has been deprecated and [ 98.457473][ T5828] and is ignored by this kernel. Remove the mand [ 98.457473][ T5828] option from the mount to silence this warning. [ 98.457473][ T5828] ======================================================= mount("/dev/loop0", "./file1", "ocfs2", MS_MANDLOCK|MS_DIRSYNC|MS_NODIRATIME, "acl,heartbeat=none,errors=remount-ro,coherency=full,coherency=full,localflocks,errors=remount-ro,acl"...) = 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) [ 98.504282][ T5828] ocfs2: Slot 0 on device (7,0) was already allocated to this node! [ 98.518802][ T5828] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. mkdirat(AT_FDCWD, "./file0", 000) = 0 mkdirat(AT_FDCWD, "./file1", 000) = 0 mkdir("./bus", 000) = 0 [ 98.609831][ T5828] [ 98.612205][ T5828] ====================================================== [ 98.619232][ T5828] WARNING: possible circular locking dependency detected [ 98.626355][ T5828] 6.14.0-rc5-syzkaller-00013-g99fa936e8e4f #0 Not tainted [ 98.633471][ T5828] ------------------------------------------------------ [ 98.640517][ T5828] syz-executor339/5828 is trying to acquire lock: [ 98.646927][ T5828] ffff888066a5c610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_setattr+0x9dd/0x1ef0 [ 98.655954][ T5828] [ 98.655954][ T5828] but task is already holding lock: [ 98.663319][ T5828] ffff88807b3ecda0 (&oi->ip_alloc_sem){+.+.}-{4:4}, at: ocfs2_setattr+0x9d0/0x1ef0 [ 98.672676][ T5828] [ 98.672676][ T5828] which lock already depends on the new lock. [ 98.672676][ T5828] [ 98.683081][ T5828] [ 98.683081][ T5828] the existing dependency chain (in reverse order) is: [ 98.692128][ T5828] [ 98.692128][ T5828] -> #4 (&oi->ip_alloc_sem){+.+.}-{4:4}: [ 98.699960][ T5828] lock_acquire+0x1ed/0x550 [ 98.704991][ T5828] down_write+0x99/0x220 [ 98.709764][ T5828] ocfs2_try_remove_refcount_tree+0xb6/0x330 [ 98.716264][ T5828] ocfs2_xattr_set+0xa4f/0x1930 [ 98.721639][ T5828] ocfs2_set_acl+0x4cb/0x580 [ 98.726747][ T5828] ocfs2_iop_set_acl+0x24a/0x3c0 [ 98.732223][ T5828] vfs_remove_acl+0x4cb/0x770 [ 98.737422][ T5828] ovl_workdir_create+0x52f/0x980 [ 98.742967][ T5828] ovl_get_workdir+0x311/0x1930 [ 98.748336][ T5828] ovl_fill_super+0x12b3/0x3640 [ 98.753704][ T5828] get_tree_nodev+0xb7/0x140 [ 98.758813][ T5828] vfs_get_tree+0x90/0x2b0 [ 98.763752][ T5828] do_new_mount+0x2be/0xb40 [ 98.768784][ T5828] __se_sys_mount+0x2d6/0x3c0 [ 98.773974][ T5828] do_syscall_64+0xf3/0x230 [ 98.778995][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 98.785410][ T5828] [ 98.785410][ T5828] -> #3 (&oi->ip_xattr_sem){++++}-{4:4}: [ 98.793248][ T5828] lock_acquire+0x1ed/0x550 [ 98.798277][ T5828] down_read+0xb1/0xa40 [ 98.802971][ T5828] ocfs2_init_acl+0x397/0x930 [ 98.808185][ T5828] ocfs2_mknod+0x1c05/0x2b30 [ 98.813334][ T5828] ocfs2_mkdir+0x1ab/0x470 [ 98.818291][ T5828] vfs_mkdir+0x2f9/0x4f0 [ 98.823067][ T5828] do_mkdirat+0x264/0x3a0 [ 98.827933][ T5828] __x64_sys_mkdirat+0x87/0xa0 [ 98.833254][ T5828] do_syscall_64+0xf3/0x230 [ 98.838288][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 98.844724][ T5828] [ 98.844724][ T5828] -> #2 (jbd2_handle){.+.+}-{0:0}: [ 98.852044][ T5828] lock_acquire+0x1ed/0x550 [ 98.857082][ T5828] start_this_handle+0x1eb4/0x2110 [ 98.862720][ T5828] jbd2__journal_start+0x2da/0x5d0 [ 98.868366][ T5828] jbd2_journal_start+0x29/0x40 [ 98.873761][ T5828] ocfs2_start_trans+0x3c9/0x700 [ 98.879214][ T5828] ocfs2_reserve_suballoc_bits+0x9f6/0x4e70 [ 98.885649][ T5828] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0 [ 98.892497][ T5828] ocfs2_mknod+0x143a/0x2b30 [ 98.897609][ T5828] ocfs2_mkdir+0x1ab/0x470 [ 98.902547][ T5828] vfs_mkdir+0x2f9/0x4f0 [ 98.907307][ T5828] do_mkdirat+0x264/0x3a0 [ 98.912189][ T5828] __x64_sys_mkdirat+0x87/0xa0 [ 98.917493][ T5828] do_syscall_64+0xf3/0x230 [ 98.922526][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 98.928947][ T5828] [ 98.928947][ T5828] -> #1 (&journal->j_trans_barrier){.+.+}-{4:4}: [ 98.937569][ T5828] lock_acquire+0x1ed/0x550 [ 98.942597][ T5828] down_read+0xb1/0xa40 [ 98.947331][ T5828] ocfs2_start_trans+0x3be/0x700 [ 98.952799][ T5828] ocfs2_reserve_suballoc_bits+0x9f6/0x4e70 [ 98.959215][ T5828] ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0 [ 98.966095][ T5828] ocfs2_mknod+0x143a/0x2b30 [ 98.971224][ T5828] ocfs2_mkdir+0x1ab/0x470 [ 98.976183][ T5828] vfs_mkdir+0x2f9/0x4f0 [ 98.980963][ T5828] do_mkdirat+0x264/0x3a0 [ 98.985839][ T5828] __x64_sys_mkdirat+0x87/0xa0 [ 98.991138][ T5828] do_syscall_64+0xf3/0x230 [ 98.996175][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.002601][ T5828] [ 99.002601][ T5828] -> #0 (sb_internal#2){.+.+}-{0:0}: [ 99.010085][ T5828] validate_chain+0x18ef/0x5920 [ 99.015454][ T5828] __lock_acquire+0x1397/0x2100 [ 99.020835][ T5828] lock_acquire+0x1ed/0x550 [ 99.025860][ T5828] ocfs2_start_trans+0x2b9/0x700 [ 99.031322][ T5828] ocfs2_setattr+0x9dd/0x1ef0 [ 99.036535][ T5828] notify_change+0xbca/0xe90 [ 99.041645][ T5828] ovl_workdir_create+0x782/0x980 [ 99.047198][ T5828] ovl_get_workdir+0x311/0x1930 [ 99.052692][ T5828] ovl_fill_super+0x12b3/0x3640 [ 99.058089][ T5828] get_tree_nodev+0xb7/0x140 [ 99.063206][ T5828] vfs_get_tree+0x90/0x2b0 [ 99.068146][ T5828] do_new_mount+0x2be/0xb40 [ 99.073178][ T5828] __se_sys_mount+0x2d6/0x3c0 [ 99.078373][ T5828] do_syscall_64+0xf3/0x230 [ 99.083417][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.089849][ T5828] [ 99.089849][ T5828] other info that might help us debug this: [ 99.089849][ T5828] [ 99.100089][ T5828] Chain exists of: [ 99.100089][ T5828] sb_internal#2 --> &oi->ip_xattr_sem --> &oi->ip_alloc_sem [ 99.100089][ T5828] [ 99.113315][ T5828] Possible unsafe locking scenario: [ 99.113315][ T5828] [ 99.120756][ T5828] CPU0 CPU1 [ 99.126118][ T5828] ---- ---- [ 99.131474][ T5828] lock(&oi->ip_alloc_sem); [ 99.136062][ T5828] lock(&oi->ip_xattr_sem); [ 99.143199][ T5828] lock(&oi->ip_alloc_sem); [ 99.150312][ T5828] rlock(sb_internal#2); [ 99.154644][ T5828] [ 99.154644][ T5828] *** DEADLOCK *** [ 99.154644][ T5828] [ 99.162779][ T5828] 5 locks held by syz-executor339/5828: [ 99.168324][ T5828] #0: ffff888031a740e0 (&type->s_umount_key#43/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0 [ 99.178459][ T5828] #1: ffff888066a5c420 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 [ 99.187628][ T5828] #2: ffff888077839800 (&sb->s_type->i_mutex_key#14/1){+.+.}-{4:4}, at: ovl_workdir_create+0x160/0x980 [ 99.198785][ T5828] #3: ffff88807b3ed100 (&sb->s_type->i_mutex_key#16){+.+.}-{4:4}, at: ovl_workdir_create+0x6e3/0x980 [ 99.209759][ T5828] #4: ffff88807b3ecda0 (&oi->ip_alloc_sem){+.+.}-{4:4}, at: ocfs2_setattr+0x9d0/0x1ef0 [ 99.219527][ T5828] [ 99.219527][ T5828] stack backtrace: [ 99.225421][ T5828] CPU: 0 UID: 0 PID: 5828 Comm: syz-executor339 Not tainted 6.14.0-rc5-syzkaller-00013-g99fa936e8e4f #0 [ 99.225438][ T5828] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 99.225450][ T5828] Call Trace: [ 99.225458][ T5828] [ 99.225465][ T5828] dump_stack_lvl+0x241/0x360 [ 99.225482][ T5828] ? __pfx_dump_stack_lvl+0x10/0x10 [ 99.225496][ T5828] ? __pfx__printk+0x10/0x10 [ 99.225521][ T5828] print_circular_bug+0x13a/0x1b0 [ 99.225538][ T5828] check_noncircular+0x36a/0x4a0 [ 99.225554][ T5828] ? __pfx_check_noncircular+0x10/0x10 [ 99.225569][ T5828] ? lockdep_lock+0x123/0x2b0 [ 99.225588][ T5828] ? add_lock_to_list+0x1e8/0x2f0 [ 99.225604][ T5828] validate_chain+0x18ef/0x5920 [ 99.225626][ T5828] ? __pfx_validate_chain+0x10/0x10 [ 99.225641][ T5828] ? __pfx_validate_chain+0x10/0x10 [ 99.225665][ T5828] ? mark_lock+0x9a/0x360 [ 99.225686][ T5828] __lock_acquire+0x1397/0x2100 [ 99.225712][ T5828] lock_acquire+0x1ed/0x550 [ 99.225731][ T5828] ? ocfs2_setattr+0x9dd/0x1ef0 [ 99.225754][ T5828] ? __pfx_lock_acquire+0x10/0x10 [ 99.225773][ T5828] ? __pfx_lock_release+0x10/0x10 [ 99.225793][ T5828] ? __pfx___might_resched+0x10/0x10 [ 99.225812][ T5828] ? do_raw_spin_unlock+0x13c/0x8b0 [ 99.225829][ T5828] ? _raw_spin_unlock+0x28/0x50 [ 99.225847][ T5828] ocfs2_start_trans+0x2b9/0x700 [ 99.225863][ T5828] ? ocfs2_setattr+0x9dd/0x1ef0 [ 99.225893][ T5828] ? __pfx_ocfs2_start_trans+0x10/0x10 [ 99.225913][ T5828] ocfs2_setattr+0x9dd/0x1ef0 [ 99.225938][ T5828] ? __pfx_ocfs2_setattr+0x10/0x10 [ 99.225962][ T5828] ? __pfx_smack_inode_setattr+0x10/0x10 [ 99.225984][ T5828] ? current_time+0x279/0x3a0 [ 99.226001][ T5828] ? evm_inode_setattr+0x1b9/0x7d0 [ 99.226026][ T5828] ? security_inode_setattr+0xdb/0x350 [ 99.226045][ T5828] ? __pfx_ocfs2_setattr+0x10/0x10 [ 99.226066][ T5828] notify_change+0xbca/0xe90 [ 99.226089][ T5828] ovl_workdir_create+0x782/0x980 [ 99.226113][ T5828] ? __pfx_ovl_workdir_create+0x10/0x10 [ 99.226133][ T5828] ? rcu_read_lock_any_held+0xb7/0x160 [ 99.226152][ T5828] ? mnt_get_write_access+0x226/0x2b0 [ 99.226172][ T5828] ovl_get_workdir+0x311/0x1930 [ 99.226195][ T5828] ? __pfx_ovl_get_workdir+0x10/0x10 [ 99.226221][ T5828] ? ovl_inuse_trylock+0xab/0xf0 [ 99.226238][ T5828] ? do_raw_spin_lock+0x14f/0x370 [ 99.226254][ T5828] ? __pfx_lock_release+0x10/0x10 [ 99.226275][ T5828] ? do_raw_spin_unlock+0x13c/0x8b0 [ 99.226294][ T5828] ? _raw_spin_unlock+0x28/0x50 [ 99.226309][ T5828] ? ovl_inuse_trylock+0xab/0xf0 [ 99.226328][ T5828] ovl_fill_super+0x12b3/0x3640 [ 99.226356][ T5828] ? __pfx_ovl_fill_super+0x10/0x10 [ 99.226374][ T5828] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 99.226395][ T5828] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 99.226423][ T5828] ? sget_fc+0x960/0xa50 [ 99.226440][ T5828] ? __pfx_set_anon_super_fc+0x10/0x10 [ 99.226457][ T5828] ? __pfx_ovl_fill_super+0x10/0x10 [ 99.226476][ T5828] get_tree_nodev+0xb7/0x140 [ 99.226495][ T5828] vfs_get_tree+0x90/0x2b0 [ 99.226515][ T5828] do_new_mount+0x2be/0xb40 [ 99.226539][ T5828] ? __pfx_do_new_mount+0x10/0x10 [ 99.226564][ T5828] __se_sys_mount+0x2d6/0x3c0 [ 99.226580][ T5828] ? __pfx___se_sys_mount+0x10/0x10 [ 99.226594][ T5828] ? do_syscall_64+0x100/0x230 [ 99.226614][ T5828] ? __x64_sys_mount+0x20/0xc0 [ 99.226629][ T5828] do_syscall_64+0xf3/0x230 [ 99.226649][ T5828] ? clear_bhb_loop+0x35/0x90 [ 99.226670][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.226694][ T5828] RIP: 0033:0x7f7b879387b9 [ 99.226710][ 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 [ 99.226722][ T5828] RSP: 002b:00007fff8efcec88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 99.226737][ T5828] RAX: ffffffffffffffda RBX: 0000400000000000 RCX: 00007f7b879387b9 [ 99.226747][ T5828] RDX: 0000400000000200 RSI: 0000400000000000 RDI: 0000000000000000 mount(NULL, "./file0", "overlay", MS_NODEV|MS_SYNCHRONOUS|MS_MANDLOCK|MS_DIRSYNC, "upperdir=./file1,lowerdir=.,workdir=./bus,,") = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 99.226757][ T5828] RBP: 0000400000000140 R08: 0000400000000140 R09: 0000