loop0: detected capacity change from 0 to 4096 ================================== WARNING: Nested lock was not taken 5.15.183-syzkaller #0 Not tainted ---------------------------------- syz.0.312/6245 is trying to lock: ffff888058f8e2d0 (&sb->s_type->i_lock_key#35){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:363 [inline] ffff888058f8e2d0 (&sb->s_type->i_lock_key#35){+.+.}-{2:2}, at: _atomic_dec_and_lock+0xa5/0x110 lib/dec_and_lock.c:28 but this task is not holding: general protection fault, probably for non-canonical address 0xdffffc0020000002: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x0000000100000010-0x0000000100000017] CPU: 1 PID: 6245 Comm: syz.0.312 Not tainted 5.15.183-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:print_lock_nested_lock_not_held kernel/locking/lockdep.c:4844 [inline] RIP: 0010:__lock_acquire+0x11d4/0x7c60 kernel/locking/lockdep.c:5003 Code: 48 8b 9c 24 a8 00 00 00 74 12 48 89 df e8 d4 38 61 00 48 b9 00 00 00 00 00 fc ff df 48 8b 1b 48 83 c3 18 48 89 d8 48 c1 e8 03 <80> 3c 08 00 74 08 48 89 df e8 ae 38 61 00 48 8b 33 48 c7 c7 20 3b RSP: 0018:ffffc900037ef720 EFLAGS: 00010003 RAX: 0000000020000002 RBX: 0000000100000017 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffffc900037ef970 R08: dffffc0000000000 R09: ffffed1017224f24 R10: ffffed1017224f24 R11: 1ffff11017224f23 R12: 0000000000040a0f R13: ffff888022bdd940 R14: ffff888022bde458 R15: 5983a59d59b2039d FS: 00007f03a4b446c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000002f000 CR3: 000000002ab1d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:363 [inline] _atomic_dec_and_lock+0xa5/0x110 lib/dec_and_lock.c:28 iput+0x7e/0x8a0 fs/inode.c:1787 ntfs_fill_super+0x355c/0x3c10 fs/ntfs3/super.c:1185 get_tree_bdev+0x3f1/0x610 fs/super.c:1325 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x24a/0xa40 fs/namespace.c:3014 do_mount fs/namespace.c:3357 [inline] __do_sys_mount fs/namespace.c:3565 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3542 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f03a58d610a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f03a4b43e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f03a4b43ef0 RCX: 00007f03a58d610a RDX: 0000200000000000 RSI: 0000200000000280 RDI: 00007f03a4b43eb0 RBP: 0000200000000000 R08: 00007f03a4b43ef0 R09: 0000000002010c14 R10: 0000000002010c14 R11: 0000000000000246 R12: 0000200000000280 R13: 00007f03a4b43eb0 R14: 000000000001f75b R15: 00002000000000c0 Modules linked in: ---[ end trace 9ba607c91e4aef9a ]--- RIP: 0010:print_lock_nested_lock_not_held kernel/locking/lockdep.c:4844 [inline] RIP: 0010:__lock_acquire+0x11d4/0x7c60 kernel/locking/lockdep.c:5003 Code: 48 8b 9c 24 a8 00 00 00 74 12 48 89 df e8 d4 38 61 00 48 b9 00 00 00 00 00 fc ff df 48 8b 1b 48 83 c3 18 48 89 d8 48 c1 e8 03 <80> 3c 08 00 74 08 48 89 df e8 ae 38 61 00 48 8b 33 48 c7 c7 20 3b RSP: 0018:ffffc900037ef720 EFLAGS: 00010003 RAX: 0000000020000002 RBX: 0000000100000017 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffffc900037ef970 R08: dffffc0000000000 R09: ffffed1017224f24 R10: ffffed1017224f24 R11: 1ffff11017224f23 R12: 0000000000040a0f R13: ffff888022bdd940 R14: ffff888022bde458 R15: 5983a59d59b2039d FS: 00007f03a4b446c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000002f000 CR3: 000000002ab1d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 8b 9c 24 a8 00 00 mov 0xa8(%rsp),%rbx 7: 00 8: 74 12 je 0x1c a: 48 89 df mov %rbx,%rdi d: e8 d4 38 61 00 call 0x6138e6 12: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 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: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 ae 38 61 00 call 0x6138e6 38: 48 8b 33 mov (%rbx),%rsi 3b: 48 rex.W 3c: c7 .byte 0xc7 3d: c7 (bad) 3e: 20 3b and %bh,(%rbx)