R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 UID: 0 PID: 9123 Comm: syz.2.793 Not tainted 6.12.0-syzkaller-07834-g06afb0f36106 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:mt_slot_locked lib/maple_tree.c:795 [inline] RIP: 0010:mas_slot_locked lib/maple_tree.c:808 [inline] RIP: 0010:mas_store_prealloc+0x5d1/0x15e0 lib/maple_tree.c:5514 Code: 89 c6 e8 32 a0 88 f6 45 85 ed 0f 85 52 0a 00 00 e8 e4 9d 88 f6 48 8d 1c eb 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 a3 0f 00 00 48 8b 03 0f b6 9c 24 a4 00 00 00 48 RSP: 0018:ffffc90026077840 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000008 RCX: ffffffff8b04d832 RDX: 0000000000000001 RSI: ffffffff8b04cdcc RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000008 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802b400000(0063) knlGS:00000000f50a6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f50a5fac CR3: 000000006adce000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __mmap_region+0x16ef/0x21c0 mm/mmap.c:1513 mmap_region+0x270/0x320 mm/mmap.c:1603 do_mmap+0xc00/0xfc0 mm/mmap.c:496 vm_mmap_pgoff+0x1ba/0x360 mm/util.c:588 ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7f27579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f50a655c EFLAGS: 00000296 ORIG_RAX: 00000000000000c0 RAX: ffffffffffffffda RBX: 0000000020ffc000 RCX: 0000000000001008 RDX: 0000000000000000 RSI: 0000000000000013 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:mt_slot_locked lib/maple_tree.c:795 [inline] RIP: 0010:mas_slot_locked lib/maple_tree.c:808 [inline] RIP: 0010:mas_store_prealloc+0x5d1/0x15e0 lib/maple_tree.c:5514 Code: 89 c6 e8 32 a0 88 f6 45 85 ed 0f 85 52 0a 00 00 e8 e4 9d 88 f6 48 8d 1c eb 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 a3 0f 00 00 48 8b 03 0f b6 9c 24 a4 00 00 00 48 RSP: 0018:ffffc90026077840 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000008 RCX: ffffffff8b04d832 RDX: 0000000000000001 RSI: ffffffff8b04cdcc RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000008 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802b700000(0063) knlGS:00000000f50a6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00007f6b0e158440 CR3: 000000006adce000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 c6 mov %eax,%esi 2: e8 32 a0 88 f6 call 0xf688a039 7: 45 85 ed test %r13d,%r13d a: 0f 85 52 0a 00 00 jne 0xa62 10: e8 e4 9d 88 f6 call 0xf6889df9 15: 48 8d 1c eb lea (%rbx,%rbp,8),%rbx 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 da mov %rbx,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 a3 0f 00 00 jne 0xfd7 34: 48 8b 03 mov (%rbx),%rax 37: 0f b6 9c 24 a4 00 00 movzbl 0xa4(%rsp),%ebx 3e: 00 3f: 48 rex.W