------------[ cut here ]------------
WARNING: CPU: 0 PID: 28414 at mm/gup.c:229 try_grab_page+0x35b/0x420 mm/gup.c:229
Modules linked in:
CPU: 0 PID: 28414 Comm: syz-executor.0 Not tainted 6.6.0-rc2-syzkaller-00386-g3aba70aed91f #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:try_grab_page+0x35b/0x420 mm/gup.c:229
Code: 49 83 ec 01 e9 2b fd ff ff e8 71 e8 c1 ff be 04 00 00 00 4c 89 ef e8 04 dd 16 00 f0 41 ff 45 00 e9 15 ff ff ff e8 55 e8 c1 ff <0f> 0b e8 4e e8 c1 ff bb f4 ff ff ff 89 d8 5b 5d 41 5c 41 5d 41 5e
RSP: 0018:ffffc9000b3971b8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffffea0004a1cdc0 RCX: ffffc9000a262000
RDX: 0000000000040000 RSI: ffffffff81c4dcbb RDI: 0000000000000005
RBP: 000000000000000e R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffea0004a1cdc0
R13: ffffea0004a1cdf4 R14: 0000000000000000 R15: 000ffffed78c8120
FS:  00007f7e13cbb6c0(0000) GS:ffff88806b600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffecbd7beb8 CR3: 0000000111054000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 follow_page_pte+0x25c/0x1d70 mm/gup.c:651
 follow_pmd_mask mm/gup.c:727 [inline]
 follow_pud_mask mm/gup.c:765 [inline]
 follow_p4d_mask mm/gup.c:782 [inline]
 follow_page_mask+0x3ce/0xda0 mm/gup.c:832
 __get_user_pages+0x366/0x1480 mm/gup.c:1237
 __get_user_pages_locked mm/gup.c:1504 [inline]
 get_dump_page+0x100/0x210 mm/gup.c:2018
 dump_user_range+0x45b/0x790 fs/coredump.c:913
 elf_core_dump+0x2700/0x3900 fs/binfmt_elf.c:2142
 do_coredump+0x2c96/0x3fc0 fs/coredump.c:764
 get_signal+0x2434/0x2790 kernel/signal.c:2878
 arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7e12e7cae9
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:00007f7e13cbb0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffe5 RBX: 00007f7e12f9bf80 RCX: 00007f7e12e7cae9
RDX: 0000000000000002 RSI: 0000000020000300 RDI: 0000000000000007
RBP: 00007f7e12ec847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f7e12f9bf80 R15: 00007fff19241a08
 </TASK>