------------[ cut here ]------------
!mas->sheaf && !mas->alloc
WARNING: lib/maple_tree.c:5752 at mas_nomem+0x1c9/0x210 lib/maple_tree.c:5752, CPU#1: syz.9.381/7417
Modules linked in:
CPU: 1 UID: 0 PID: 7417 Comm: syz.9.381 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:mas_nomem+0x1c9/0x210 lib/maple_tree.c:5752
Code: 4c 89 ff e8 29 d3 5f f6 49 c7 07 00 00 00 00 b0 01 e9 98 fe ff ff e8 d6 57 f1 f5 90 0f 0b 90 e9 2b ff ff ff e8 c8 57 f1 f5 90 <0f> 0b 90 e9 7a fe ff ff 89 d1 80 e1 07 80 c1 03 38 c1 0f 8c ce fe
RSP: 0018:ffffc90003227950 EFLAGS: 00010246
RAX: ffffffff8bd66568 RBX: 1ffff92000644fbf RCX: 0000000000080000
RDX: ffffc90022819000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: 0000000000000cc0 R08: 00000000ffffffff R09: 1ffffffff1dd4e06
R10: dffffc0000000000 R11: fffffbfff1dd4e07 R12: dffffc0000000000
R13: ffffc90003227e18 R14: ffffc90003227de0 R15: ffffc90003227df8
FS:  00007f52e33496c0(0000) GS:ffff888124df8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efcd55eb7c0 CR3: 0000000033ba4000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 mas_store_gfp+0x37a/0x830 lib/maple_tree.c:4988
 vma_iter_clear_gfp include/linux/mm.h:1695 [inline]
 do_vmi_align_munmap+0x303/0x4b0 mm/vma.c:1679
 do_vmi_munmap+0x252/0x2d0 mm/vma.c:1732
 __vm_munmap+0x241/0x3e0 mm/vma.c:3390
 __do_sys_munmap mm/mmap.c:1094 [inline]
 __se_sys_munmap mm/mmap.c:1091 [inline]
 __x64_sys_munmap+0x60/0x70 mm/mmap.c:1091
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f52e239df07
Code: 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f52e3348e08 EFLAGS: 00000287 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 0000000002000000 RCX: 00007f52e239df07
RDX: 0000000000c40000 RSI: 0000000008400000 RDI: 00007f52d8000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000003
R13: 00007f52e3348ee0 R14: 00007f52e3348ea0 R15: 00007f52d8000000
 </TASK>