REISERFS (device loop0): checking transaction log (loop0) REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop0): using 3.5.x disk format REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: possible circular locking dependency detected 6.7.0-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/5777 is trying to acquire lock: ffff8880207d0090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock_nested+0x69/0xe0 fs/reiserfs/lock.c:78 but task is already holding lock: ffff88806501ad20 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:857 [inline] ffff88806501ad20 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x13a/0x5f0 mm/readahead.c:225 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (mapping.invalidate_lock#3){.+.+}-{3:3}: down_read+0x9a/0x330 kernel/locking/rwsem.c:1526 filemap_invalidate_lock_shared include/linux/fs.h:857 [inline] page_cache_ra_unbounded+0x13a/0x5f0 mm/readahead.c:225 do_page_cache_ra mm/readahead.c:299 [inline] page_cache_ra_order+0x72b/0xa80 mm/readahead.c:546 do_sync_mmap_readahead mm/filemap.c:3150 [inline] filemap_fault+0x16a8/0x3570 mm/filemap.c:3242 __do_fault+0x107/0x600 mm/memory.c:4266 do_shared_fault mm/memory.c:4693 [inline] do_fault mm/memory.c:4767 [inline] do_pte_missing mm/memory.c:3731 [inline] handle_pte_fault mm/memory.c:5039 [inline] __handle_mm_fault+0x29a9/0x3d70 mm/memory.c:5180 handle_mm_fault+0x47a/0xa10 mm/memory.c:5345 do_user_addr_fault+0x3f8/0x1030 arch/x86/mm/fault.c:1415 handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x5d/0xc0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 __put_user_4+0x11/0x20 arch/x86/lib/putuser.S:86 reiserfs_ioctl+0x1f6/0x2e0 fs/reiserfs/ioctl.c:96 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b -> #0 (&sbi->lock){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2433/0x3b20 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x175/0x9d0 kernel/locking/mutex.c:747 reiserfs_write_lock_nested+0x69/0xe0 fs/reiserfs/lock.c:78 reiserfs_cond_resched fs/reiserfs/reiserfs.h:848 [inline] reiserfs_cond_resched fs/reiserfs/reiserfs.h:841 [inline] search_by_key+0x26ae/0x3e60 fs/reiserfs/stree.c:712 search_for_position_by_key+0xe4/0xd50 fs/reiserfs/stree.c:874 _get_block_create_0+0x2b9/0x1ba0 fs/reiserfs/inode.c:305 reiserfs_get_block+0x2c7e/0x4570 fs/reiserfs/inode.c:695 do_mpage_readpage+0x6f8/0x1a90 fs/mpage.c:233 mpage_readahead+0x34d/0x590 fs/mpage.c:381 read_pages+0x1d1/0xdc0 mm/readahead.c:160 page_cache_ra_unbounded+0x457/0x5f0 mm/readahead.c:269 do_page_cache_ra mm/readahead.c:299 [inline] page_cache_ra_order+0x72b/0xa80 mm/readahead.c:546 do_sync_mmap_readahead mm/filemap.c:3150 [inline] filemap_fault+0x16a8/0x3570 mm/filemap.c:3242 __do_fault+0x107/0x600 mm/memory.c:4266 do_shared_fault mm/memory.c:4693 [inline] do_fault mm/memory.c:4767 [inline] do_pte_missing mm/memory.c:3731 [inline] handle_pte_fault mm/memory.c:5039 [inline] __handle_mm_fault+0x29a9/0x3d70 mm/memory.c:5180 handle_mm_fault+0x47a/0xa10 mm/memory.c:5345 do_user_addr_fault+0x3f8/0x1030 arch/x86/mm/fault.c:1415 handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x5d/0xc0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 __put_user_4+0x11/0x20 arch/x86/lib/putuser.S:86 reiserfs_ioctl+0x1f6/0x2e0 fs/reiserfs/ioctl.c:96 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(mapping.invalidate_lock#3); lock(&sbi->lock); lock(mapping.invalidate_lock#3); lock(&sbi->lock); *** DEADLOCK *** 1 lock held by syz-executor.0/5777: #0: ffff88806501ad20 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:857 [inline] #0: ffff88806501ad20 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x13a/0x5f0 mm/readahead.c:225 stack backtrace: CPU: 1 PID: 5777 Comm: syz-executor.0 Not tainted 6.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 check_noncircular+0x317/0x400 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2433/0x3b20 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x175/0x9d0 kernel/locking/mutex.c:747 reiserfs_write_lock_nested+0x69/0xe0 fs/reiserfs/lock.c:78 reiserfs_cond_resched fs/reiserfs/reiserfs.h:848 [inline] reiserfs_cond_resched fs/reiserfs/reiserfs.h:841 [inline] search_by_key+0x26ae/0x3e60 fs/reiserfs/stree.c:712 search_for_position_by_key+0xe4/0xd50 fs/reiserfs/stree.c:874 _get_block_create_0+0x2b9/0x1ba0 fs/reiserfs/inode.c:305 reiserfs_get_block+0x2c7e/0x4570 fs/reiserfs/inode.c:695 do_mpage_readpage+0x6f8/0x1a90 fs/mpage.c:233 mpage_readahead+0x34d/0x590 fs/mpage.c:381 read_pages+0x1d1/0xdc0 mm/readahead.c:160 page_cache_ra_unbounded+0x457/0x5f0 mm/readahead.c:269 do_page_cache_ra mm/readahead.c:299 [inline] page_cache_ra_order+0x72b/0xa80 mm/readahead.c:546 do_sync_mmap_readahead mm/filemap.c:3150 [inline] filemap_fault+0x16a8/0x3570 mm/filemap.c:3242 __do_fault+0x107/0x600 mm/memory.c:4266 do_shared_fault mm/memory.c:4693 [inline] do_fault mm/memory.c:4767 [inline] do_pte_missing mm/memory.c:3731 [inline] handle_pte_fault mm/memory.c:5039 [inline] __handle_mm_fault+0x29a9/0x3d70 mm/memory.c:5180 handle_mm_fault+0x47a/0xa10 mm/memory.c:5345 do_user_addr_fault+0x3f8/0x1030 arch/x86/mm/fault.c:1415 handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x5d/0xc0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:__put_user_4+0x11/0x20 arch/x86/lib/putuser.S:88 Code: 01 ca c3 66 0f 1f 44 00 00 f3 0f 1e fa 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 f3 0f 1e fa 48 89 cb 48 c1 fb 3f 48 09 d9 0f 01 cb <89> 01 31 c9 0f 01 ca c3 0f 1f 80 00 00 00 00 f3 0f 1e fa 0f 01 cb RSP: 0018:ffffc9000364fec0 EFLAGS: 00050206 RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000020000000 RDX: 1ffff1100ca035d3 RSI: ffffffff822ad2d4 RDI: ffff88806501ae98 RBP: ffff88806501aa30 R08: 0000000000000000 R09: fffffbfff1e30e12 R10: ffffffff8f187097 R11: 0000000000000001 R12: ffff888019ab0040 R13: 0000000020000000 R14: ffff88806501aa58 R15: 0000000000000005 reiserfs_ioctl+0x1f6/0x2e0 fs/reiserfs/ioctl.c:96 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fe9b0c7cce9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe9b19210c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe9b0d9bf80 RCX: 00007fe9b0c7cce9 RDX: 0000000020000000 RSI: 0000000080087601 RDI: 0000000000000005 RBP: 00007fe9b0cc947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fe9b0d9bf80 R15: 00007ffdf56be0d8 ---------------- Code disassembly (best guess): 0: 01 ca add %ecx,%edx 2: c3 ret 3: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 9: f3 0f 1e fa endbr64 d: 0f 01 cb stac 10: 66 89 01 mov %ax,(%rcx) 13: 31 c9 xor %ecx,%ecx 15: 0f 01 ca clac 18: c3 ret 19: f3 0f 1e fa endbr64 1d: 48 89 cb mov %rcx,%rbx 20: 48 c1 fb 3f sar $0x3f,%rbx 24: 48 09 d9 or %rbx,%rcx 27: 0f 01 cb stac * 2a: 89 01 mov %eax,(%rcx) <-- trapping instruction 2c: 31 c9 xor %ecx,%ecx 2e: 0f 01 ca clac 31: c3 ret 32: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 39: f3 0f 1e fa endbr64 3d: 0f 01 cb stac