Hello, syzbot found the following issue on: HEAD commit: ef4d3ea40565 afs: Fix server->active leak in afs_put_server git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=174b244d880000 kernel config: https://syzkaller.appspot.com/x/.config?x=8e7e79f8a1e34200 dashboard link: https://syzkaller.appspot.com/bug?extid=1c8ff72d0cd8a50dfeaa compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=165f624d880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17e7e55b880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ef790e7777cd/disk-ef4d3ea4.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/2ed3c6bc9230/vmlinux-ef4d3ea4.xz kernel image: https://storage.googleapis.com/syzbot-assets/f1dbd004fa88/bzImage-ef4d3ea4.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/ac35ccffd559/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1c8ff72d0cd8a50dfeaa@xxxxxxxxxxxxxxxxxxxxxxxxx loop0: detected capacity change from 0 to 1024 hfsplus: trying to free free bnode 0(1) hfsplus: new node 0 already hashed? ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3631 at fs/hfsplus/bnode.c:573 hfsplus_bnode_create+0x3d4/0x460 fs/hfsplus/bnode.c:572 Modules linked in: CPU: 0 PID: 3631 Comm: syz-executor306 Not tainted 6.1.0-rc7-syzkaller-00103-gef4d3ea40565 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:hfsplus_bnode_create+0x3d4/0x460 fs/hfsplus/bnode.c:573 Code: 31 c0 e8 41 9b 43 08 e9 5f fd ff ff e8 45 25 2b ff 4c 89 ff e8 7d fe 4e 08 48 c7 c7 c0 52 27 8b 44 89 e6 31 c0 e8 1e 9b 43 08 <0f> 0b eb b1 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 61 fc ff ff 48 89 RSP: 0018:ffffc90003bfedb0 EFLAGS: 00010246 RAX: 0000000000000023 RBX: ffff888017af7400 RCX: 99976e79c3affa00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff816fdabd R09: fffff5200077fd6d R10: fffff5200077fd6d R11: 1ffff9200077fd6c R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88807bef8000 R15: ffff88807bef80e0 FS: 00005555558fc300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe4e739000 CR3: 000000007bbce000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> hfsplus_bmap_alloc+0x5a5/0x640 fs/hfsplus/btree.c:415 hfs_btree_inc_height+0x131/0xda0 fs/hfsplus/brec.c:475 hfsplus_brec_insert+0x160/0xdf0 fs/hfsplus/brec.c:75 hfsplus_create_attr+0x4b2/0x620 fs/hfsplus/attributes.c:252 __hfsplus_setxattr+0x6e4/0x2270 fs/hfsplus/xattr.c:354 hfsplus_initxattrs+0x15c/0x230 fs/hfsplus/xattr_security.c:59 security_inode_init_security+0x3bf/0x3f0 security/security.c:1119 hfsplus_mknod+0x1bd/0x290 fs/hfsplus/dir.c:498 lookup_open fs/namei.c:3413 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x12e2/0x2e00 fs/namei.c:3711 do_filp_open+0x275/0x500 fs/namei.c:3741 do_sys_openat2+0x13b/0x500 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_creat fs/open.c:1402 [inline] __se_sys_creat fs/open.c:1396 [inline] __x64_sys_creat+0x11f/0x160 fs/open.c:1396 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f4788f48779 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe4e738698 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4788f48779 RDX: 00007f4788f48779 RSI: 0000000000000000 RDI: 0000000020000300 RBP: 00007f4788f08010 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000604 R11: 0000000000000246 R12: 00007f4788f080a0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches