================================== WARNING: Nested lock was not taken 6.6.0-syzkaller-15029-gbe3ca57cfb77 #0 Not tainted ---------------------------------- syz-executor.0/20660 is trying to lock: ffff88805ddc5460 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: inode_trylock include/linux/fs.h:822 [inline] ffff88805ddc5460 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: ntfs_file_write_iter+0x23b/0x1e60 fs/ntfs3/file.c:1061 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: 3 PID: 20660 Comm: syz-executor.0 Not tainted 6.6.0-syzkaller-15029-gbe3ca57cfb77 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:print_lock_nested_lock_not_held kernel/locking/lockdep.c:4966 [inline] RIP: 0010:__lock_acquire+0x12bb/0x5de0 kernel/locking/lockdep.c:5127 Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 40 4a 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 18 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 13 4a 00 00 48 8b 73 18 48 c7 c7 e0 dc cc 8a e8 RSP: 0018:ffffc900037d7368 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900054bb000 RDX: 0000000000000003 RSI: ffffffff816af882 RDI: 0000000000000018 RBP: ffff88802b7e9680 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 7369687420747562 R12: ffff88802b7e8bc0 R13: ffff88802b7e96a8 R14: 0000000000000001 R15: ffffed10056fd2cf FS: 00007f6983f426c0(0000) GS:ffff88806b900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2b0ecc56be CR3: 0000000056e51000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5753 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5718 down_write_trylock kernel/locking/rwsem.c:1610 [inline] down_write_trylock+0x1ae/0x3d0 kernel/locking/rwsem.c:1605 inode_trylock include/linux/fs.h:822 [inline] ntfs_file_write_iter+0x23b/0x1e60 fs/ntfs3/file.c:1061 call_write_iter include/linux/fs.h:2020 [inline] do_iter_readv_writev+0x21e/0x3c0 fs/read_write.c:735 do_iter_write+0x17f/0x7f0 fs/read_write.c:860 vfs_iter_write+0x7a/0xb0 fs/read_write.c:901 iter_file_splice_write+0x698/0xc00 fs/splice.c:736 do_splice_from fs/splice.c:933 [inline] direct_splice_actor+0x118/0x180 fs/splice.c:1142 splice_direct_to_actor+0x347/0xa30 fs/splice.c:1088 do_splice_direct+0x1af/0x280 fs/splice.c:1194 do_sendfile+0xb3e/0x1310 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __x64_sys_sendfile64+0x1d6/0x220 fs/read_write.c:1308 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f698327cae9 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:00007f6983f420c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f698339bf80 RCX: 00007f698327cae9 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f69832c847a R08: 0000000000000000 R09: 0000000000000000 R10: 000000007fffff67 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f698339bf80 R15: 00007fff8bd74598 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:print_lock_nested_lock_not_held kernel/locking/lockdep.c:4966 [inline] RIP: 0010:__lock_acquire+0x12bb/0x5de0 kernel/locking/lockdep.c:5127 Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 40 4a 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 18 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 13 4a 00 00 48 8b 73 18 48 c7 c7 e0 dc cc 8a e8 RSP: 0018:ffffc900037d7368 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900054bb000 RDX: 0000000000000003 RSI: ffffffff816af882 RDI: 0000000000000018 RBP: ffff88802b7e9680 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 7369687420747562 R12: ffff88802b7e8bc0 R13: ffff88802b7e96a8 R14: 0000000000000001 R15: ffffed10056fd2cf FS: 00007f6983f426c0(0000) GS:ffff88806b900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2b0ecc56be CR3: 0000000056e51000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 40 4a 00 00 jne 0x4a4e e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 15: fc ff df 18: 49 8b 5d 18 mov 0x18(%r13),%rbx 1c: 48 8d 7b 18 lea 0x18(%rbx),%rdi 20: 48 89 fa mov %rdi,%rdx 23: 48 c1 ea 03 shr $0x3,%rdx * 27: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2b: 0f 85 13 4a 00 00 jne 0x4a44 31: 48 8b 73 18 mov 0x18(%rbx),%rsi 35: 48 c7 c7 e0 dc cc 8a mov $0xffffffff8accdce0,%rdi 3c: e8 .byte 0xe8