syzbot


WARNING: nested lock was not taken in evict

Status: upstream: reported on 2022/10/01 13:41
Reported-by: syzbot+91a81c5ebb1f330e5fbd@syzkaller.appspotmail.com
First crash: 59d, last: 44d

Sample crash report:
ntfs3: loop3: RAW NTFS volume: Filesystem size 0.00 Gb > volume size 0.00 Gb. Mount in read-only
ntfs3: loop3: failed to read volume at offset 0x120000
==================================
WARNING: Nested lock was not taken
6.0.0-syzkaller-05118-g833477fce7a1 #0 Not tainted
----------------------------------
syz-executor.3/13002 is trying to lock:
ffff88803d8c69d8 (&s->s_inode_list_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline]
ffff88803d8c69d8 (&s->s_inode_list_lock){+.+.}-{2:2}, at: inode_sb_list_del fs/inode.c:503 [inline]
ffff88803d8c69d8 (&s->s_inode_list_lock){+.+.}-{2:2}, at: evict+0x161/0x620 fs/inode.c:654

but this task is not holding:
general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 0 PID: 13002 Comm: syz-executor.3 Not tainted 6.0.0-syzkaller-05118-g833477fce7a1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:print_lock_nested_lock_not_held kernel/locking/lockdep.c:4885 [inline]
RIP: 0010:__lock_acquire+0x1112/0x1f60 kernel/locking/lockdep.c:5044
Code: 3c 30 00 48 8b 5c 24 70 74 12 48 89 df e8 b6 84 74 00 49 be 00 00 00 00 00 fc ff df 48 8b 1b 48 83 c3 18 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 8f 84 74 00 48 8b 33 45 31 f6 48
RSP: 0018:ffffc90005c7f828 EFLAGS: 00010006
RAX: 0000000000000003 RBX: 0000000000000018 RCX: 8c87a4d98b13e800
RDX: ffffc9000d734000 RSI: 000000000002b6b2 RDI: 000000000002b6b3
RBP: ffff88803e03a360 R08: ffffffff816c58bd R09: ffffed1017344f13
R10: ffffed1017344f13 R11: 1ffff11017344f12 R12: ffff88803e03a5c8
R13: d4afeeafaccb0031 R14: dffffc0000000000 R15: ffff88803e039d80
FS:  00007f8248db8700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020404030 CR3: 0000000071bcd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5666
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:349 [inline]
 inode_sb_list_del fs/inode.c:503 [inline]
 evict+0x161/0x620 fs/inode.c:654
 ntfs_fill_super+0x3c6c/0x4420 fs/ntfs3/super.c:1190
 get_tree_bdev+0x400/0x620 fs/super.c:1323
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x289/0xad0 fs/namespace.c:3040
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3568
 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: 0033:0x7f8247c8bada
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8248db7f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f8247c8bada
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f8248db7fe0
RBP: 00007f8248db8020 R08: 00007f8248db8020 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f8248db7fe0 R15: 000000002007aa80
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:print_lock_nested_lock_not_held kernel/locking/lockdep.c:4885 [inline]
RIP: 0010:__lock_acquire+0x1112/0x1f60 kernel/locking/lockdep.c:5044
Code: 3c 30 00 48 8b 5c 24 70 74 12 48 89 df e8 b6 84 74 00 49 be 00 00 00 00 00 fc ff df 48 8b 1b 48 83 c3 18 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 8f 84 74 00 48 8b 33 45 31 f6 48
RSP: 0018:ffffc90005c7f828 EFLAGS: 00010006
RAX: 0000000000000003 RBX: 0000000000000018 RCX: 8c87a4d98b13e800
RDX: ffffc9000d734000 RSI: 000000000002b6b2 RDI: 000000000002b6b3
RBP: ffff88803e03a360 R08: ffffffff816c58bd R09: ffffed1017344f13
R10: ffffed1017344f13 R11: 1ffff11017344f12 R12: ffff88803e03a5c8
R13: d4afeeafaccb0031 R14: dffffc0000000000 R15: ffff88803e039d80
FS:  00007f8248db8700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020404030 CR3: 0000000071bcd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	3c 30                	cmp    $0x30,%al
   2:	00 48 8b             	add    %cl,-0x75(%rax)
   5:	5c                   	pop    %rsp
   6:	24 70                	and    $0x70,%al
   8:	74 12                	je     0x1c
   a:	48 89 df             	mov    %rbx,%rdi
   d:	e8 b6 84 74 00       	callq  0x7484c8
  12:	49 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%r14
  19:	fc ff df
  1c:	48 8b 1b             	mov    (%rbx),%rbx
  1f:	48 83 c3 18          	add    $0x18,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 8f 84 74 00       	callq  0x7484c8
  39:	48 8b 33             	mov    (%rbx),%rsi
  3c:	45 31 f6             	xor    %r14d,%r14d
  3f:	48                   	rex.W

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2022/10/06 14:33 upstream 833477fce7a1 131b38ac .config log report info WARNING: nested lock was not taken in evict
ci-upstream-kasan-gce-smack-root 2022/09/28 15:16 upstream 49c13ed0316d e2556bc3 .config log report info WARNING: nested lock was not taken in evict
ci-upstream-gce-arm64 2022/10/13 19:13 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bbed346d5a96 adf90437 .config log report info WARNING: nested lock was not taken in evict
* Struck through repros no longer work on HEAD.