====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz.2.3483/19955 is trying to acquire lock: ffff8880b0904fa0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1024 [inline] ffff8880b0904fa0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_xattr_set+0xd4d/0x2bb0 fs/ocfs2/xattr.c:3666 but task is already holding lock: ffff8880b0905ae8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x429/0x2bb0 fs/ocfs2/xattr.c:3627 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&oi->ip_xattr_sem){++++}-{4:4}: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 down_read+0x99/0x4c0 kernel/locking/rwsem.c:1574 ocfs2_init_acl+0x35b/0x840 fs/ocfs2/acl.c:367 ocfs2_mknod+0x173c/0x2770 fs/ocfs2/namei.c:414 ocfs2_create+0xf4/0x430 fs/ocfs2/namei.c:677 lookup_open fs/namei.c:4508 [inline] open_last_lookups fs/namei.c:4608 [inline] path_openat+0x341f/0x4280 fs/namei.c:4860 do_file_open+0x20e/0x430 fs/namei.c:4892 do_sys_openat2+0x10f/0x1e0 fs/open.c:1368 do_sys_open fs/open.c:1374 [inline] __do_sys_openat fs/open.c:1390 [inline] __se_sys_openat fs/open.c:1385 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1385 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&journal->j_trans_barrier){.+.+}-{4:4}: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 down_read+0x99/0x4c0 kernel/locking/rwsem.c:1574 ocfs2_start_trans+0x5cc/0x8f0 fs/ocfs2/journal.c:369 ocfs2_mknod+0x160d/0x2770 fs/ocfs2/namei.c:365 ocfs2_create+0xf4/0x430 fs/ocfs2/namei.c:677 lookup_open fs/namei.c:4508 [inline] open_last_lookups fs/namei.c:4608 [inline] path_openat+0x341f/0x4280 fs/namei.c:4860 do_file_open+0x20e/0x430 fs/namei.c:4892 do_sys_openat2+0x10f/0x1e0 fs/open.c:1368 do_sys_open fs/open.c:1374 [inline] __do_sys_open fs/open.c:1382 [inline] __se_sys_open fs/open.c:1378 [inline] __x64_sys_open+0xfe/0x1d0 fs/open.c:1378 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (sb_internal#2){.+.+}-{0:0}: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs/super.h:19 [inline] sb_start_intwrite include/linux/fs/super.h:177 [inline] ocfs2_start_trans+0x4bb/0x8f0 fs/ocfs2/journal.c:367 ocfs2_shutdown_local_alloc+0x27a/0x820 fs/ocfs2/localalloc.c:417 ocfs2_dismount_volume+0x1ee/0x8d0 fs/ocfs2/super.c:1824 generic_shutdown_super+0x167/0x360 fs/super.c:647 kill_block_super+0x3b/0xa0 fs/super.c:1665 deactivate_locked_super+0xc1/0x1b0 fs/super.c:477 deactivate_super fs/super.c:510 [inline] deactivate_super+0xe7/0x110 fs/super.c:506 cleanup_mnt+0x21f/0x450 fs/namespace.c:1317 task_work_run+0x150/0x240 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:70 [inline] exit_to_user_mode_loop+0x1d8/0x6f0 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline] do_syscall_64+0x666/0x870 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE]){+.+.}-{4:4}: lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1631 inode_lock include/linux/fs.h:1024 [inline] __ocfs2_flush_truncate_log+0x495/0x1180 fs/ocfs2/alloc.c:6063 ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6093 [inline] ocfs2_truncate_log_shutdown+0x14d/0x310 fs/ocfs2/alloc.c:6354 ocfs2_dismount_volume+0x1f6/0x8d0 fs/ocfs2/super.c:1826 generic_shutdown_super+0x167/0x360 fs/super.c:647 kill_block_super+0x3b/0xa0 fs/super.c:1665 deactivate_locked_super+0xc1/0x1b0 fs/super.c:477 deactivate_super fs/super.c:510 [inline] deactivate_super+0xe7/0x110 fs/super.c:506 cleanup_mnt+0x21f/0x450 fs/namespace.c:1317 task_work_run+0x150/0x240 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:70 [inline] exit_to_user_mode_loop+0x1d8/0x6f0 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline] do_syscall_64+0x666/0x870 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]){+.+.}-{4:4}: check_prev_add+0xeb/0xe60 kernel/locking/lockdep.c:3165 check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x136c/0x1a40 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1631 inode_lock include/linux/fs.h:1024 [inline] ocfs2_xattr_set+0xd4d/0x2bb0 fs/ocfs2/xattr.c:3666 __vfs_setxattr+0x175/0x1e0 fs/xattr.c:223 __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:257 __vfs_setxattr_locked+0x127/0x2b0 fs/xattr.c:318 vfs_setxattr+0x14a/0x390 fs/xattr.c:344 do_setxattr+0x145/0x180 fs/xattr.c:662 file_setxattr fs/xattr.c:672 [inline] file_setxattr+0x139/0x1b0 fs/xattr.c:666 path_setxattrat+0x335/0x3b0 fs/xattr.c:732 __do_sys_fsetxattr fs/xattr.c:782 [inline] __se_sys_fsetxattr fs/xattr.c:779 [inline] __x64_sys_fsetxattr+0xc5/0x140 fs/xattr.c:779 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE] --> &journal->j_trans_barrier --> &oi->ip_xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_xattr_sem); lock(&journal->j_trans_barrier); lock(&oi->ip_xattr_sem); lock(&ocfs2_sysfile_lock_key[TRUNCATE_LOG_SYSTEM_INODE]); *** DEADLOCK *** 3 locks held by syz.2.3483/19955: #0: ffff8880777f2450 (sb_writers#18){.+.+}-{0:0}, at: file_setxattr+0x1f/0x1b0 fs/xattr.c:668 #1: ffff8880b0905da0 (&sb->s_type->i_mutex_key#31){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1024 [inline] #1: ffff8880b0905da0 (&sb->s_type->i_mutex_key#31){+.+.}-{4:4}, at: vfs_setxattr+0x120/0x390 fs/xattr.c:343 #2: ffff8880b0905ae8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x429/0x2bb0 fs/ocfs2/xattr.c:3627 stack backtrace: CPU: 0 UID: 0 PID: 19955 Comm: syz.2.3483 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/10/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 print_circular_bug.cold+0x178/0x1c7 kernel/locking/lockdep.c:2043 check_noncircular+0x146/0x160 kernel/locking/lockdep.c:2175 check_prev_add+0xeb/0xe60 kernel/locking/lockdep.c:3165 check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x136c/0x1a40 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1631 inode_lock include/linux/fs.h:1024 [inline] ocfs2_xattr_set+0xd4d/0x2bb0 fs/ocfs2/xattr.c:3666 __vfs_setxattr+0x175/0x1e0 fs/xattr.c:223 __vfs_setxattr_noperm+0x127/0x660 fs/xattr.c:257 __vfs_setxattr_locked+0x127/0x2b0 fs/xattr.c:318 vfs_setxattr+0x14a/0x390 fs/xattr.c:344 do_setxattr+0x145/0x180 fs/xattr.c:662 file_setxattr fs/xattr.c:672 [inline] file_setxattr+0x139/0x1b0 fs/xattr.c:666 path_setxattrat+0x335/0x3b0 fs/xattr.c:732 __do_sys_fsetxattr fs/xattr.c:782 [inline] __se_sys_fsetxattr fs/xattr.c:779 [inline] __x64_sys_fsetxattr+0xc5/0x140 fs/xattr.c:779 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f49de99de59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f49df8da028 EFLAGS: 00000246 ORIG_RAX: 00000000000000be RAX: ffffffffffffffda RBX: 00007f49dec25fa0 RCX: 00007f49de99de59 RDX: 0000000000000000 RSI: 0000200000000080 RDI: 0000000000000004 RBP: 00007f49dea33e6f R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f49dec26038 R14: 00007f49dec25fa0 R15: 00007ffceea1c3a8 syz.2.3483: attempt to access beyond end of device loop2: rw=0, sector=71, nr_sectors = 1 limit=64 (syz.2.3483,19955,0):ocfs2_assign_bh:2417 ERROR: status = -5 (syz.2.3483,19955,0):ocfs2_inode_lock_full_nested:2512 ERROR: status = -5 (syz.2.3483,19955,1):ocfs2_reserve_suballoc_bits:911 ERROR: status = -5 (syz.2.3483,19955,1):ocfs2_reserve_cluster_bitmap_bits:1255 ERROR: status = -5 (syz.2.3483,19955,1):ocfs2_reserve_clusters_with_limit:1324 ERROR: status = -5 (syz.2.3483,19955,1):ocfs2_reserve_clusters_with_limit:1337 ERROR: status = -5 (syz.2.3483,19955,1):ocfs2_block_group_alloc:795 ERROR: status = -5 (syz.2.3483,19955,1):ocfs2_block_group_alloc:880 ERROR: status = -5 (syz.2.3483,19955,1):ocfs2_reserve_suballoc_bits:955 ERROR: status = -5 (syz.2.3483,19955,1):ocfs2_reserve_suballoc_bits:972 ERROR: status = -5 (syz.2.3483,19955,0):ocfs2_reserve_new_metadata_blocks:1112 ERROR: status = -5 (syz.2.3483,19955,0):ocfs2_reserve_new_metadata_blocks:1135 ERROR: status = -5 (syz.2.3483,19955,0):ocfs2_init_xattr_set_ctxt:3324 ERROR: status = -5 (syz.2.3483,19955,1):ocfs2_xattr_set:3681 ERROR: status = -5 syz.2.3483: attempt to access beyond end of device loop2: rw=0, sector=71, nr_sectors = 1 limit=64 (syz.2.3483,19955,0):ocfs2_assign_bh:2417 ERROR: status = -5 (syz.2.3483,19955,0):ocfs2_inode_lock_full_nested:2512 ERROR: status = -5 (syz.2.3483,19955,0):ocfs2_shutdown_local_alloc:412 ERROR: status = -5 syz.2.3483: attempt to access beyond end of device loop2: rw=1, sector=17024, nr_sectors = 1 limit=64 Buffer I/O error on dev loop2, logical block 17024, lost sync page write (syz.2.3483,19955,0):ocfs2_write_block:76 ERROR: status = -5 (syz.2.3483,19955,0):ocfs2_update_disk_slot:203 ERROR: status = -5 (syz.2.3483,19955,0):ocfs2_put_slot:539 ERROR: status = -5 Aborting journal on device loop2-75. syz.2.3483: attempt to access beyond end of device loop2: rw=38913, sector=640, nr_sectors = 1 limit=64 Buffer I/O error on dev loop2, logical block 640, lost sync page write JBD2: I/O error when updating journal superblock for loop2-75. (syz.2.3483,19955,0):ocfs2_journal_shutdown:1103 ERROR: status = -5 ocfs2: Unmounting device (7,2) on (node local)