ocfs2: Mounting device (7,3) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.14.0-rc4-syzkaller-ge056da87c780 #0 Not tainted ------------------------------------------------------ syz.3.238/7578 is trying to acquire lock: ffff0000d0cd8610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_inline fs/ocfs2/aops.c:1465 [inline] ffff0000d0cd8610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1569 [inline] ffff0000d0cd8610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_write_begin_nolock+0xa04/0x3e90 fs/ocfs2/aops.c:1655 but task is already holding lock: ffff0000f40ca2e0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_write_begin+0x178/0x38c fs/ocfs2/aops.c:1887 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&oi->ip_alloc_sem){++++}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 ocfs2_try_remove_refcount_tree+0xb4/0x2f0 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x670/0x1448 fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x410/0x4b4 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x230/0x374 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:954 [inline] vfs_remove_acl+0x470/0x6f4 fs/posix_acl.c:1241 removexattr fs/xattr.c:1022 [inline] filename_removexattr fs/xattr.c:1052 [inline] path_removexattrat+0x2ec/0x5b4 fs/xattr.c:1088 __do_sys_removexattr fs/xattr.c:1100 [inline] __se_sys_removexattr fs/xattr.c:1097 [inline] __arm64_sys_removexattr+0x64/0x7c fs/xattr.c:1097 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #3 (&oi->ip_xattr_sem){++++}-{4:4}: down_read+0x58/0x2fc kernel/locking/rwsem.c:1524 ocfs2_init_acl+0x2c8/0x764 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1388/0x2438 fs/ocfs2/namei.c:410 ocfs2_create+0x194/0x4d4 fs/ocfs2/namei.c:673 vfs_create+0x21c/0x36c fs/namei.c:3350 do_mknodat+0x3cc/0x56c fs/namei.c:4241 __do_sys_mknodat fs/namei.c:4269 [inline] __se_sys_mknodat fs/namei.c:4266 [inline] __arm64_sys_mknodat+0xac/0xc8 fs/namei.c:4266 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #2 (jbd2_handle){++++}-{0:0}: start_this_handle+0xf34/0x11c4 fs/jbd2/transaction.c:448 jbd2__journal_start+0x298/0x544 fs/jbd2/transaction.c:505 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:544 ocfs2_start_trans+0x3d0/0x71c fs/ocfs2/journal.c:352 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:685 [inline] ocfs2_reserve_suballoc_bits+0x840/0x4254 fs/ocfs2/suballoc.c:832 ocfs2_reserve_new_metadata_blocks+0x384/0x848 fs/ocfs2/suballoc.c:982 ocfs2_mknod+0xdc8/0x2438 fs/ocfs2/namei.c:347 ocfs2_create+0x194/0x4d4 fs/ocfs2/namei.c:673 vfs_create+0x21c/0x36c fs/namei.c:3350 do_mknodat+0x3cc/0x56c fs/namei.c:4241 __do_sys_mknodat fs/namei.c:4269 [inline] __se_sys_mknodat fs/namei.c:4266 [inline] __arm64_sys_mknodat+0xac/0xc8 fs/namei.c:4266 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #1 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x58/0x2fc kernel/locking/rwsem.c:1524 ocfs2_start_trans+0x3c4/0x71c fs/ocfs2/journal.c:350 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:685 [inline] ocfs2_reserve_suballoc_bits+0x840/0x4254 fs/ocfs2/suballoc.c:832 ocfs2_reserve_new_metadata_blocks+0x384/0x848 fs/ocfs2/suballoc.c:982 ocfs2_mknod+0xdc8/0x2438 fs/ocfs2/namei.c:347 ocfs2_create+0x194/0x4d4 fs/ocfs2/namei.c:673 vfs_create+0x21c/0x36c fs/namei.c:3350 do_mknodat+0x3cc/0x56c fs/namei.c:4241 __do_sys_mknodat fs/namei.c:4269 [inline] __se_sys_mknodat fs/namei.c:4266 [inline] __arm64_sys_mknodat+0xac/0xc8 fs/namei.c:4266 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #0 (sb_internal#2){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3163 [inline] check_prevs_add kernel/locking/lockdep.c:3282 [inline] validate_chain kernel/locking/lockdep.c:3906 [inline] __lock_acquire+0x34f0/0x7904 kernel/locking/lockdep.c:5228 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5851 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1785 [inline] sb_start_intwrite include/linux/fs.h:1968 [inline] ocfs2_start_trans+0x244/0x71c fs/ocfs2/journal.c:348 ocfs2_write_begin_inline fs/ocfs2/aops.c:1465 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1569 [inline] ocfs2_write_begin_nolock+0xa04/0x3e90 fs/ocfs2/aops.c:1655 ocfs2_write_begin+0x1ac/0x38c fs/ocfs2/aops.c:1889 generic_perform_write+0x29c/0x868 mm/filemap.c:4189 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4290 ocfs2_file_write_iter+0x161c/0x1f3c fs/ocfs2/file.c:2469 new_sync_write fs/read_write.c:586 [inline] vfs_write+0x704/0xa9c fs/read_write.c:679 ksys_write+0x15c/0x26c fs/read_write.c:731 __do_sys_write fs/read_write.c:742 [inline] __se_sys_write fs/read_write.c:739 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:739 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 other info that might help us debug this: Chain exists of: sb_internal#2 --> &oi->ip_xattr_sem --> &oi->ip_alloc_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_alloc_sem); lock(&oi->ip_xattr_sem); lock(&oi->ip_alloc_sem); rlock(sb_internal#2); *** DEADLOCK *** 4 locks held by syz.3.238/7578: #0: ffff0000cca0bb38 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x220/0x2ac fs/file.c:1192 #1: ffff0000d0cd8420 (sb_writers#13){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3035 [inline] #1: ffff0000d0cd8420 (sb_writers#13){.+.+}-{0:0}, at: vfs_write+0x248/0xa9c fs/read_write.c:675 #2: ffff0000f40ca640 (&sb->s_type->i_mutex_key#21){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline] #2: ffff0000f40ca640 (&sb->s_type->i_mutex_key#21){+.+.}-{4:4}, at: ocfs2_file_write_iter+0x3a4/0x1f3c fs/ocfs2/file.c:2399 #3: ffff0000f40ca2e0 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_write_begin+0x178/0x38c fs/ocfs2/aops.c:1887 stack backtrace: CPU: 0 UID: 0 PID: 7578 Comm: syz.3.238 Not tainted 6.14.0-rc4-syzkaller-ge056da87c780 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x154/0x1c0 kernel/locking/lockdep.c:2076 check_noncircular+0x310/0x404 kernel/locking/lockdep.c:2208 check_prev_add kernel/locking/lockdep.c:3163 [inline] check_prevs_add kernel/locking/lockdep.c:3282 [inline] validate_chain kernel/locking/lockdep.c:3906 [inline] __lock_acquire+0x34f0/0x7904 kernel/locking/lockdep.c:5228 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5851 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1785 [inline] sb_start_intwrite include/linux/fs.h:1968 [inline] ocfs2_start_trans+0x244/0x71c fs/ocfs2/journal.c:348 ocfs2_write_begin_inline fs/ocfs2/aops.c:1465 [inline] ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1569 [inline] ocfs2_write_begin_nolock+0xa04/0x3e90 fs/ocfs2/aops.c:1655 ocfs2_write_begin+0x1ac/0x38c fs/ocfs2/aops.c:1889 generic_perform_write+0x29c/0x868 mm/filemap.c:4189 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4290 ocfs2_file_write_iter+0x161c/0x1f3c fs/ocfs2/file.c:2469 new_sync_write fs/read_write.c:586 [inline] vfs_write+0x704/0xa9c fs/read_write.c:679 ksys_write+0x15c/0x26c fs/read_write.c:731 __do_sys_write fs/read_write.c:742 [inline] __se_sys_write fs/read_write.c:739 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:739 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600