general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 9130 Comm: syz-executor.6 Not tainted 6.1.0-rc1-next-20221021 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_parse_integer_fixup_radix+0x60/0x2a0 Code: 02 00 00 41 8b 2c 24 31 ff 89 ee e8 3a fa 36 ff 85 ed 75 66 e8 01 fe 36 ff 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 48 89 da 83 e2 07 38 d0 7f 08 84 c0 0f 85 e6 01 00 00 RSP: 0018:ffff888043fb7a40 EFLAGS: 00010256 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90009847000 RDX: 0000000000000000 RSI: ffffffff821119af RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888043fb7a90 R13: ffff888043fb7bd8 R14: 000000007fffffff R15: ffff888044e43cd0 FS: 00007f487bfaa700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f487bfab000 CR3: 00000000449bc000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Call Trace: <TASK> simple_strntoull+0x88/0x180 memparse+0x72/0x210 shmem_parse_one+0x142/0xb70 vfs_parse_fs_param+0x204/0x3d0 vfs_parse_fs_string+0xdb/0x190 shmem_parse_options+0x160/0x260 path_mount+0x12c8/0x1e30 __x64_sys_mount+0x282/0x310 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f487ea3604a Code: 48 c7 c2 bc 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f487bfa9fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f487ea3604a RDX: 0000000020000040 RSI: 0000000020000540 RDI: 0000000000000000 RBP: 00007f487bfaa040 R08: 00007f487bfaa040 R09: 0000000020000040 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000040 R13: 0000000020000540 R14: 00007f487bfaa000 R15: 0000000020000000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:_parse_integer_fixup_radix+0x60/0x2a0 Code: 02 00 00 41 8b 2c 24 31 ff 89 ee e8 3a fa 36 ff 85 ed 75 66 e8 01 fe 36 ff 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 48 89 da 83 e2 07 38 d0 7f 08 84 c0 0f 85 e6 01 00 00 RSP: 0018:ffff888043fb7a40 EFLAGS: 00010256 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90009847000 RDX: 0000000000000000 RSI: ffffffff821119af RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888043fb7a90 R13: ffff888043fb7bd8 R14: 000000007fffffff R15: ffff888044e43cd0 FS: 00007f487bfaa700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f487bfab000 CR3: 00000000449bc000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#2] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 9153 Comm: syz-executor.6 Tainted: G D 6.1.0-rc1-next-20221021 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_parse_integer_fixup_radix+0x60/0x2a0 Code: 02 00 00 41 8b 2c 24 31 ff 89 ee e8 3a fa 36 ff 85 ed 75 66 e8 01 fe 36 ff 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 48 89 da 83 e2 07 38 d0 7f 08 84 c0 0f 85 e6 01 00 00 RSP: 0018:ffff88804402fa40 EFLAGS: 00010256 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000a64e000 RDX: 0000000000000000 RSI: ffffffff821119af RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804402fa90 R13: ffff88804402fbd8 R14: 000000007fffffff R15: ffff888044e420d0 FS: 00007f487bf89700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f487bf8a000 CR3: 00000000449bc000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Call Trace: <TASK> simple_strntoull+0x88/0x180 memparse+0x72/0x210 shmem_parse_one+0x142/0xb70 vfs_parse_fs_param+0x204/0x3d0 vfs_parse_fs_string+0xdb/0x190 shmem_parse_options+0x160/0x260 path_mount+0x12c8/0x1e30 __x64_sys_mount+0x282/0x310 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f487ea3604a Code: 48 c7 c2 bc 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f487bf88fa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f487ea3604a RDX: 0000000020000040 RSI: 0000000020000540 RDI: 0000000000000000 RBP: 00007f487bf89040 R08: 00007f487bf89040 R09: 0000000020000040 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000040 R13: 0000000020000540 R14: 00007f487bf89000 R15: 0000000020000000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:_parse_integer_fixup_radix+0x60/0x2a0 Code: 02 00 00 41 8b 2c 24 31 ff 89 ee e8 3a fa 36 ff 85 ed 75 66 e8 01 fe 36 ff 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 48 89 da 83 e2 07 38 d0 7f 08 84 c0 0f 85 e6 01 00 00 RSP: 0018:ffff888043fb7a40 EFLAGS: 00010256 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90009847000 RDX: 0000000000000000 RSI: ffffffff821119af RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888043fb7a90 R13: ffff888043fb7bd8 R14: 000000007fffffff R15: ffff888044e43cd0 FS: 00007f487bf89700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f487bf8a000 CR3: 00000000449bc000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 02 00 add (%rax),%al 2: 00 41 8b add %al,-0x75(%rcx) 5: 2c 24 sub $0x24,%al 7: 31 ff xor %edi,%edi 9: 89 ee mov %ebp,%esi b: e8 3a fa 36 ff callq 0xff36fa4a 10: 85 ed test %ebp,%ebp 12: 75 66 jne 0x7a 14: e8 01 fe 36 ff callq 0xff36fe1a 19: 48 89 da mov %rbx,%rdx 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 48 89 da mov %rbx,%rdx 31: 83 e2 07 and $0x7,%edx 34: 38 d0 cmp %dl,%al 36: 7f 08 jg 0x40 38: 84 c0 test %al,%al 3a: 0f 85 e6 01 00 00 jne 0x226