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kernel BUG at mm/hugetlb.c:2333!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 3 UID: 0 PID: 22955 Comm: syz.4.10440 Not tainted 6.14.0-rc2-syzkaller-00185-g128c8f96eb86 #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:alloc_hugetlb_folio_reserve+0xac/0xc0 mm/hugetlb.c:2333
Code: a3 d0 00 00 00 e8 e4 1e a3 ff 48 c7 c7 40 56 e1 8d e8 98 b0 40 09 48 89 e8 5b 5d 41 5c 41 5d c3 cc cc cc cc e8 c5 1e a3 ff 90 <0f> 0b e8 2d 5c 05 00 eb ac 66 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000ce0f8f0 EFLAGS: 00010083
RAX: 00000000000008ec RBX: ffffffff9a8d4758 RCX: ffffc9002b001000
RDX: 0000000000080000 RSI: ffffffff8216b47b RDI: 0000000000000007
RBP: ffffea0001490000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000000010a R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000015
FS:  0000000000000000(0000) GS:ffff88802b700000(0063) knlGS:00000000f5044b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7399110 CR3: 000000006617c000 CR4: 0000000000352ef0
DR0: 0000000000000008 DR1: 00000000000000ff DR2: fffffffffffffffb
DR3: 3e00000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 memfd_alloc_folio+0x16c/0x3b0 mm/memfd.c:88
 memfd_pin_folios+0xe8c/0x1150 mm/gup.c:3740
 udmabuf_pin_folios drivers/dma-buf/udmabuf.c:346 [inline]
 udmabuf_create+0x641/0x11e0 drivers/dma-buf/udmabuf.c:443
 udmabuf_ioctl_create drivers/dma-buf/udmabuf.c:495 [inline]
 udmabuf_ioctl+0x193/0x310 drivers/dma-buf/udmabuf.c:526
 __do_compat_sys_ioctl+0x1cb/0x2c0 fs/ioctl.c:1004
 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: 0023:0xf7f65579
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:00000000f504455c EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000040187542
RDX: 0000000080000040 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:alloc_hugetlb_folio_reserve+0xac/0xc0 mm/hugetlb.c:2333
Code: a3 d0 00 00 00 e8 e4 1e a3 ff 48 c7 c7 40 56 e1 8d e8 98 b0 40 09 48 89 e8 5b 5d 41 5c 41 5d c3 cc cc cc cc e8 c5 1e a3 ff 90 <0f> 0b e8 2d 5c 05 00 eb ac 66 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000ce0f8f0 EFLAGS: 00010083
RAX: 00000000000008ec RBX: ffffffff9a8d4758 RCX: ffffc9002b001000
RDX: 0000000000080000 RSI: ffffffff8216b47b RDI: 0000000000000007
RBP: ffffea0001490000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000000010a R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000015
FS:  0000000000000000(0000) GS:ffff88802b700000(0063) knlGS:00000000f5044b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7399110 CR3: 000000006617c000 CR4: 0000000000352ef0
DR0: 0000000000000008 DR1: 00000000000000ff DR2: fffffffffffffffb
DR3: 3e00000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi