general protection fault, probably for non-canonical address 0xdffffc0020000007: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x0000000100000038-0x000000010000003f] CPU: 0 PID: 5800 Comm: syz-executor.0 Not tainted 6.6.0-rc1-syzkaller-00115-g9fdfb15a3dbf #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:dio_send_cur_page+0x1a3/0x760 fs/direct-io.c:430 Code: 74 24 08 49 8d 5e 04 48 89 d8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 c4 04 00 00 44 0f b6 33 49 8d 5c 24 40 48 89 d8 48 c1 e8 03 <80> 3c 28 00 74 08 48 89 df e8 4f da dd ff 48 8b 6c 24 08 48 89 2b RSP: 0018:ffffc9000988f010 EFLAGS: 00010203 RAX: 0000000020000007 RBX: 000000010000003f RCX: ffff88807b823b80 RDX: 0000000000000000 RSI: 0000000000000a44 RDI: ffffffffffffffff RBP: dffffc0000000000 R08: ffffffff820a5b79 R09: 1ffff92001311e74 R10: dffffc0000000000 R11: fffff52001311e75 R12: 00000000ffffffff R13: ffffc9000988f2c0 R14: 0000000000000001 R15: ffffc9000988f3a0 FS: 00007f49591dd6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdb4933d28 CR3: 00000000298db000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __blockdev_direct_IO+0x2fbf/0x4280 fs/direct-io.c:1268 blockdev_direct_IO include/linux/fs.h:3010 [inline] ntfs_direct_IO+0x195/0x370 fs/ntfs3/inode.c:790 generic_file_direct_write+0x1e3/0x3f0 mm/filemap.c:3867 __generic_file_write_iter+0x125/0x230 mm/filemap.c:4023 ntfs_file_write_iter+0x5fe/0x6d0 fs/ntfs3/file.c:1081 do_iter_write+0x84f/0xde0 iter_file_splice_write+0x86d/0x1010 fs/splice.c:736 direct_splice_actor+0xea/0x1c0 fs/splice.c:933 splice_direct_to_actor+0x376/0x9e0 fs/splice.c:1088 do_splice_direct+0x2ac/0x3f0 fs/splice.c:1194 do_sendfile+0x623/0x1070 fs/read_write.c:1254 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1322 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f495847c899 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:00007f49591dd0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f495859bf80 RCX: 00007f495847c899 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f49584d8ad0 R08: 0000000000000000 R09: 0000000000000000 R10: 00008400fffffffa R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f495859bf80 R15: 00007ffdb49352b8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dio_send_cur_page+0x1a3/0x760 fs/direct-io.c:430 Code: 74 24 08 49 8d 5e 04 48 89 d8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 c4 04 00 00 44 0f b6 33 49 8d 5c 24 40 48 89 d8 48 c1 e8 03 <80> 3c 28 00 74 08 48 89 df e8 4f da dd ff 48 8b 6c 24 08 48 89 2b RSP: 0018:ffffc9000988f010 EFLAGS: 00010203 RAX: 0000000020000007 RBX: 000000010000003f RCX: ffff88807b823b80 RDX: 0000000000000000 RSI: 0000000000000a44 RDI: ffffffffffffffff RBP: dffffc0000000000 R08: ffffffff820a5b79 R09: 1ffff92001311e74 R10: dffffc0000000000 R11: fffff52001311e75 R12: 00000000ffffffff R13: ffffc9000988f2c0 R14: 0000000000000001 R15: ffffc9000988f3a0 FS: 00007f49591dd6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4958505dae CR3: 00000000298db000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 74 24 je 0x26 2: 08 49 8d or %cl,-0x73(%rcx) 5: 5e pop %rsi 6: 04 48 add $0x48,%al 8: 89 d8 mov %ebx,%eax a: 48 c1 e8 03 shr $0x3,%rax e: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax 12: 84 c0 test %al,%al 14: 0f 85 c4 04 00 00 jne 0x4de 1a: 44 0f b6 33 movzbl (%rbx),%r14d 1e: 49 8d 5c 24 40 lea 0x40(%r12),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 4f da dd ff call 0xffddda87 38: 48 8b 6c 24 08 mov 0x8(%rsp),%rbp 3d: 48 89 2b mov %rbp,(%rbx)