Hello, syzbot found the following issue on: HEAD commit: ae867bc97b71 Add linux-next specific files for 20230721 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=13e8efaea80000 kernel config: https://syzkaller.appspot.com/x/.config?x=c403a6b36e7c85ac dashboard link: https://syzkaller.appspot.com/bug?extid=12dd1b7c210b98623391 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11f7744aa80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11e25e52a80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/a76b93f21f84/disk-ae867bc9.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/8eb30097a952/vmlinux-ae867bc9.xz kernel image: https://storage.googleapis.com/syzbot-assets/7506a6b3ec38/bzImage-ae867bc9.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/26e8694ec3f7/mount_2.gz The issue was bisected to: commit ad26a9c84510af7252e582e811de970433a9758f Author: Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx> Date: Fri Oct 7 17:08:06 2022 +0000 fs/ntfs3: Fixing wrong logic in attr_set_size and ntfs_fallocate bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=149187d1a80000 final oops: https://syzkaller.appspot.com/x/report.txt?x=169187d1a80000 console output: https://syzkaller.appspot.com/x/log.txt?x=129187d1a80000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+12dd1b7c210b98623391@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: ad26a9c84510 ("fs/ntfs3: Fixing wrong logic in attr_set_size and ntfs_fallocate") ================================== WARNING: Nested lock was not taken 6.5.0-rc2-next-20230721-syzkaller #0 Not tainted ---------------------------------- syz-executor992/5289 is trying to lock: ffff888077f9f240 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_trylock include/linux/fs.h:791 [inline] ffff888077f9f240 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: ntfs_file_write_iter+0x236/0x1c10 fs/ntfs3/file.c:1060 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: 5289 Comm: syz-executor992 Not tainted 6.5.0-rc2-next-20230721-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:print_lock_nested_lock_not_held kernel/locking/lockdep.c:4974 [inline] RIP: 0010:__lock_acquire+0x12bb/0x5de0 kernel/locking/lockdep.c:5135 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 20 b1 6c 8a e8 RSP: 0018:ffffc90004017368 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000003 RSI: ffffffff816acb50 RDI: 0000000000000018 RBP: ffff88801fc20ac8 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff88801fc20000 R13: ffff88801fc20af0 R14: 0000000000000001 R15: ffffed1003f84158 FS: 000055555625d380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555562666f8 CR3: 0000000029b9f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 down_write_trylock kernel/locking/rwsem.c:1604 [inline] down_write_trylock+0x1ae/0x3d0 kernel/locking/rwsem.c:1599 inode_trylock include/linux/fs.h:791 [inline] ntfs_file_write_iter+0x236/0x1c10 fs/ntfs3/file.c:1060 call_write_iter include/linux/fs.h:1917 [inline] do_iter_readv_writev+0x21e/0x3c0 fs/read_write.c:735 do_iter_write+0x17f/0x830 fs/read_write.c:860 vfs_iter_write+0x7a/0xb0 fs/read_write.c:901 iter_file_splice_write+0x698/0xbf0 fs/splice.c:738 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+0xb88/0x1390 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:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f906989afd9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 1b 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff4bf5f198 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f906989afd9 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006 RBP: 0000000000000000 R08: 00007fff4bf5f1d0 R09: 00007fff4bf5f1d0 R10: 000000007fffffff R11: 0000000000000246 R12: 00007fff4bf5f1bc R13: 00000000000000cd R14: 431bde82d7b634db R15: 00007fff4bf5f1f0 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:print_lock_nested_lock_not_held kernel/locking/lockdep.c:4974 [inline] RIP: 0010:__lock_acquire+0x12bb/0x5de0 kernel/locking/lockdep.c:5135 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 20 b1 6c 8a e8 RSP: 0018:ffffc90004017368 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000003 RSI: ffffffff816acb50 RDI: 0000000000000018 RBP: ffff88801fc20ac8 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff88801fc20000 R13: ffff88801fc20af0 R14: 0000000000000001 R15: ffffed1003f84158 FS: 000055555625d380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555562666f8 CR3: 0000000029b9f000 CR4: 00000000003506f0 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 20 b1 6c 8a mov $0xffffffff8a6cb120,%rdi 3c: e8 .byte 0xe8 --- 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
