REISERFS (device loop2): Using tea hash to sort names REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: possible circular locking dependency detected 5.15.139-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.2/6128 is trying to acquire lock: ffff8000263d70f0 (&journal->j_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:814 [inline] ffff8000263d70f0 (&journal->j_mutex){+.+.}-{3:3}, at: lock_journal fs/reiserfs/journal.c:534 [inline] ffff8000263d70f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x2e8/0xe3c fs/reiserfs/journal.c:3045 but task is already holding lock: ffff0000d8b1e460 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:421 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (sb_writers#19){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1742 [inline] sb_start_write+0xf0/0x3ac include/linux/fs.h:1812 mnt_want_write_file+0x64/0x1e8 fs/namespace.c:421 reiserfs_ioctl+0x188/0x4b8 fs/reiserfs/ioctl.c:103 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #1 (&sbi->lock){+.+.}-{3:3}: __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 reiserfs_write_lock_nested+0x68/0xd8 fs/reiserfs/lock.c:78 reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:815 [inline] lock_journal fs/reiserfs/journal.c:534 [inline] do_journal_begin_r+0x2f4/0xe3c fs/reiserfs/journal.c:3045 journal_begin+0x110/0x2f4 fs/reiserfs/journal.c:3253 reiserfs_fill_super+0x13c0/0x1e8c fs/reiserfs/super.c:2108 mount_bdev+0x274/0x370 fs/super.c:1387 get_super_block+0x44/0x58 fs/reiserfs/super.c:2608 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1517 do_new_mount+0x25c/0x8c4 fs/namespace.c:2994 path_mount+0x594/0x101c fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount fs/namespace.c:3522 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3522 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #0 (&journal->j_mutex){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3787 [inline] __lock_acquire+0x32cc/0x7620 kernel/locking/lockdep.c:5011 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:814 [inline] lock_journal fs/reiserfs/journal.c:534 [inline] do_journal_begin_r+0x2e8/0xe3c fs/reiserfs/journal.c:3045 journal_begin+0x110/0x2f4 fs/reiserfs/journal.c:3253 reiserfs_dirty_inode+0x104/0x204 fs/reiserfs/super.c:710 __mark_inode_dirty+0x2b0/0x10f4 fs/fs-writeback.c:2464 mark_inode_dirty include/linux/fs.h:2393 [inline] reiserfs_ioctl+0x3c0/0x4b8 fs/reiserfs/ioctl.c:111 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 other info that might help us debug this: Chain exists of: &journal->j_mutex --> &sbi->lock --> sb_writers#19 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sb_writers#19); lock(&sbi->lock); lock(sb_writers#19); lock(&journal->j_mutex); *** DEADLOCK *** 1 lock held by syz-executor.2/6128: #0: ffff0000d8b1e460 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:421 stack backtrace: CPU: 0 PID: 6128 Comm: syz-executor.2 Not tainted 5.15.139-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2011 check_noncircular+0x2cc/0x378 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3787 [inline] __lock_acquire+0x32cc/0x7620 kernel/locking/lockdep.c:5011 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:814 [inline] lock_journal fs/reiserfs/journal.c:534 [inline] do_journal_begin_r+0x2e8/0xe3c fs/reiserfs/journal.c:3045 journal_begin+0x110/0x2f4 fs/reiserfs/journal.c:3253 reiserfs_dirty_inode+0x104/0x204 fs/reiserfs/super.c:710 __mark_inode_dirty+0x2b0/0x10f4 fs/fs-writeback.c:2464 mark_inode_dirty include/linux/fs.h:2393 [inline] reiserfs_ioctl+0x3c0/0x4b8 fs/reiserfs/ioctl.c:111 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584