loop1: detected capacity change from 0 to 1024 ====================================================== WARNING: possible circular locking dependency detected 6.9.0-rc2-next-20240405-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.1/16675 is trying to acquire lock: ffff88807d3d2798 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable+0x1d/0x70 include/linux/mmap_lock.h:153 but task is already holding lock: ffff88805e4ba0b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_find_init+0x14a/0x1c0 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&tree->tree_lock){+.+.}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752 hfsplus_file_truncate+0x811/0xb50 fs/hfsplus/extents.c:595 hfsplus_delete_inode+0x174/0x220 hfsplus_unlink+0x512/0x790 fs/hfsplus/dir.c:405 vfs_unlink+0x365/0x650 fs/namei.c:4335 do_unlinkat+0x4ae/0x830 fs/namei.c:4399 __do_sys_unlinkat fs/namei.c:4442 [inline] __se_sys_unlinkat fs/namei.c:4435 [inline] __x64_sys_unlinkat+0xce/0xf0 fs/namei.c:4435 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x72/0x7a -> #2 (&hip->extents_lock){+.+.}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752 hfsplus_get_block+0x383/0x14f0 fs/hfsplus/extents.c:260 block_read_full_folio+0x42e/0xe10 fs/buffer.c:2384 read_pages+0x5f9/0x840 mm/readahead.c:180 page_cache_ra_unbounded+0x6ce/0x7f0 mm/readahead.c:273 filemap_readahead mm/filemap.c:2504 [inline] filemap_get_pages+0x743/0x2090 mm/filemap.c:2545 filemap_read+0x457/0xfa0 mm/filemap.c:2625 __kernel_read+0x51b/0x9c0 fs/read_write.c:434 integrity_kernel_read+0xb0/0x100 security/integrity/iint.c:28 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:485 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline] ima_calc_file_hash+0xadb/0x1b30 security/integrity/ima/ima_crypto.c:573 ima_collect_measurement+0x536/0xb30 security/integrity/ima/ima_api.c:293 process_measurement+0x13ac/0x1f60 security/integrity/ima/ima_main.c:359 ima_file_mmap+0x1f4/0x2b0 security/integrity/ima/ima_main.c:449 security_mmap_file+0x145/0x1a0 security/security.c:2833 vm_mmap_pgoff+0x141/0x3d0 mm/util.c:569 ksys_mmap_pgoff+0x504/0x6e0 mm/mmap.c:1433 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x72/0x7a -> #1 (mapping.invalidate_lock#12){.+.+}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1526 filemap_invalidate_lock_shared include/linux/fs.h:841 [inline] filemap_fault+0x649/0x16a0 mm/filemap.c:3302 __do_fault+0x135/0x460 mm/memory.c:4541 do_read_fault mm/memory.c:4904 [inline] do_fault mm/memory.c:5034 [inline] do_pte_missing mm/memory.c:3887 [inline] handle_pte_fault+0x3b24/0x6650 mm/memory.c:5358 __handle_mm_fault mm/memory.c:5499 [inline] handle_mm_fault+0x10e7/0x1bb0 mm/memory.c:5664 do_user_addr_fault arch/x86/mm/fault.c:1419 [inline] handle_page_fault arch/x86/mm/fault.c:1511 [inline] exc_page_fault+0x2b9/0x900 arch/x86/mm/fault.c:1569 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 strncpy_from_user+0x110/0x2f0 lib/strncpy_from_user.c:139 getname_flags+0xfa/0x4f0 fs/namei.c:150 do_sys_openat2+0xd2/0x1d0 fs/open.c:1400 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1432 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x72/0x7a -> #0 (&mm->mmap_lock){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain+0x18cb/0x58e0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 down_read_killable+0xca/0xd30 kernel/locking/rwsem.c:1549 mmap_read_lock_killable+0x1d/0x70 include/linux/mmap_lock.h:153 get_mmap_lock_carefully mm/memory.c:5700 [inline] lock_mm_and_find_vma+0x29c/0x2f0 mm/memory.c:5751 do_user_addr_fault arch/x86/mm/fault.c:1391 [inline] handle_page_fault arch/x86/mm/fault.c:1511 [inline] exc_page_fault+0x1bf/0x900 arch/x86/mm/fault.c:1569 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 filldir64+0x2a6/0x6a0 fs/readdir.c:371 dir_emit_dot include/linux/fs.h:3566 [inline] hfsplus_readdir+0x499/0x1320 fs/hfsplus/dir.c:159 iterate_dir+0x65e/0x820 fs/readdir.c:110 __do_sys_getdents64 fs/readdir.c:409 [inline] __se_sys_getdents64+0x20d/0x4f0 fs/readdir.c:394 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x72/0x7a other info that might help us debug this: Chain exists of: &mm->mmap_lock --> &hip->extents_lock --> &tree->tree_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&tree->tree_lock); lock(&hip->extents_lock); lock(&tree->tree_lock); rlock(&mm->mmap_lock); *** DEADLOCK *** 3 locks held by syz-executor.1/16675: #0: ffff88801f01d9c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x259/0x320 fs/file.c:1191 #1: ffff88807ec0dac0 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: iterate_dir+0x55b/0x820 fs/readdir.c:103 #2: ffff88805e4ba0b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_find_init+0x14a/0x1c0 stack backtrace: CPU: 1 PID: 16675 Comm: syz-executor.1 Not tainted 6.9.0-rc2-next-20240405-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 check_noncircular+0x36a/0x4a0 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+0x18cb/0x58e0 kernel/locking/lockdep.c:3869 __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 down_read_killable+0xca/0xd30 kernel/locking/rwsem.c:1549 mmap_read_lock_killable+0x1d/0x70 include/linux/mmap_lock.h:153 get_mmap_lock_carefully mm/memory.c:5700 [inline] lock_mm_and_find_vma+0x29c/0x2f0 mm/memory.c:5751 do_user_addr_fault arch/x86/mm/fault.c:1391 [inline] handle_page_fault arch/x86/mm/fault.c:1511 [inline] exc_page_fault+0x1bf/0x900 arch/x86/mm/fault.c:1569 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0010:filldir64+0x2a6/0x6a0 fs/readdir.c:375 Code: 84 ff 4c 89 f7 48 89 de e8 97 5b 84 ff 49 01 df 0f 88 5a 02 00 00 49 39 df 0f 82 51 02 00 00 0f 01 cb 0f ae e8 48 8b 44 24 60 <48> 89 43 08 48 8b 4c 24 10 48 8b 44 24 58 48 89 01 48 8b 44 24 18 RSP: 0018:ffffc9001070f880 EFLAGS: 00050206 RAX: 0000000000000000 RBX: 0000000020002140 RCX: ffff88802d355a00 RDX: 0000000000000000 RSI: 0000000020002140 RDI: 0000000020002158 RBP: 0000000000000000 R08: ffffffff82113479 R09: 0000000000000004 R10: 0000000000000002 R11: ffffffff821131f0 R12: ffffffff8be17820 R13: 0000000000000001 R14: 0000000020002158 R15: 0000000020002158 dir_emit_dot include/linux/fs.h:3566 [inline] hfsplus_readdir+0x499/0x1320 fs/hfsplus/dir.c:159 iterate_dir+0x65e/0x820 fs/readdir.c:110 __do_sys_getdents64 fs/readdir.c:409 [inline] __se_sys_getdents64+0x20d/0x4f0 fs/readdir.c:394 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x72/0x7a RIP: 0033:0x7f2b86e7de69 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:00007f2b87be00c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007f2b86fabf80 RCX: 00007f2b86e7de69 RDX: 0000000000001009 RSI: 0000000020002140 RDI: 0000000000000005 RBP: 00007f2b86eca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f2b86fabf80 R15: 00007ffed44593f8 ---------------- Code disassembly (best guess): 0: 84 ff test %bh,%bh 2: 4c 89 f7 mov %r14,%rdi 5: 48 89 de mov %rbx,%rsi 8: e8 97 5b 84 ff call 0xff845ba4 d: 49 01 df add %rbx,%r15 10: 0f 88 5a 02 00 00 js 0x270 16: 49 39 df cmp %rbx,%r15 19: 0f 82 51 02 00 00 jb 0x270 1f: 0f 01 cb stac 22: 0f ae e8 lfence 25: 48 8b 44 24 60 mov 0x60(%rsp),%rax * 2a: 48 89 43 08 mov %rax,0x8(%rbx) <-- trapping instruction 2e: 48 8b 4c 24 10 mov 0x10(%rsp),%rcx 33: 48 8b 44 24 58 mov 0x58(%rsp),%rax 38: 48 89 01 mov %rax,(%rcx) 3b: 48 8b 44 24 18 mov 0x18(%rsp),%rax