BUG: unable to handle page fault for address: ffff8881d7a39490
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 7001067 P4D 7001067 PUD 1e18ad063 PMD 1ddd03063 PTE ffff8881e6e6c668
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7824 Comm: syz.1.2079 Tainted: G        W         5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:follow_page_pte+0x1e1/0xcc0 mm/gup.c:198
Code: 4d 8d 64 0c 28 48 01 d0 4e 8d 34 f8 4c 89 e7 e8 45 ca a6 02 4c 89 f3 48 c1 eb 03 42 80 3c 2b 00 74 08 4c 89 f7 e8 2f 4e 09 00 <4d> 8b 3e 44 89 fe 81 e6 01 01 00 00 31 ff e8 3c 57 db ff 44 89 f8
RSP: 0018:ffff8881c6d67270 EFLAGS: 00010246
RAX: cd73001caba45200 RBX: 1ffff1103af47292 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff8881c6d67200
RBP: ffff8881c6d67320 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed1038dace40 R11: 1ffff11038dace40 R12: ffffea00075e8e68
R13: dffffc0000000000 R14: ffff8881d7a39490 R15: 0000000000000092
FS:  00007f4e365ff6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8881d7a39490 CR3: 00000001ca485000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0100000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 follow_pmd_mask mm/gup.c:376 [inline]
 follow_pud_mask mm/gup.c:471 [inline]
 follow_p4d_mask mm/gup.c:497 [inline]
 follow_page_mask+0x785/0x1120 mm/gup.c:556
 __get_user_pages+0xb7a/0x15d0 mm/gup.c:872
 get_dump_page+0xd1/0x140 mm/gup.c:1363
 elf_core_dump+0x3438/0x3bd0 fs/binfmt_elf.c:2349
 do_coredump+0x1d8c/0x2ab0 fs/coredump.c:801
 get_signal+0xdb7/0x13d0 kernel/signal.c:2732
 do_signal+0xad/0xda0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0xc4/0x1b0 arch/x86/entry/common.c:159
 prepare_exit_to_usermode+0x18e/0x1f0 arch/x86/entry/common.c:194
 ret_from_intr+0x1c/0x1c
RIP: 0033:0x7f4e37f96971
Code: 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:00000000fffffeb0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f4e381bdfa0 RCX: 00007f4e37f96969
RDX: 0000000000000000 RSI: 00000000fffffeb0 RDI: 0000000002000400
RBP: 00007f4e38018ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4e381bdfa0 R15: 00007ffd03cca1d8
Modules linked in:
CR2: ffff8881d7a39490
---[ end trace 0f1c0157e44b339b ]---
RIP: 0010:follow_page_pte+0x1e1/0xcc0 mm/gup.c:198
Code: 4d 8d 64 0c 28 48 01 d0 4e 8d 34 f8 4c 89 e7 e8 45 ca a6 02 4c 89 f3 48 c1 eb 03 42 80 3c 2b 00 74 08 4c 89 f7 e8 2f 4e 09 00 <4d> 8b 3e 44 89 fe 81 e6 01 01 00 00 31 ff e8 3c 57 db ff 44 89 f8
RSP: 0018:ffff8881c6d67270 EFLAGS: 00010246
RAX: cd73001caba45200 RBX: 1ffff1103af47292 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff8881c6d67200
RBP: ffff8881c6d67320 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed1038dace40 R11: 1ffff11038dace40 R12: ffffea00075e8e68
R13: dffffc0000000000 R14: ffff8881d7a39490 R15: 0000000000000092
FS:  00007f4e365ff6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8881d7a39490 CR3: 00000001ca485000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0100000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	4d 8d 64 0c 28       	lea    0x28(%r12,%rcx,1),%r12
   5:	48 01 d0             	add    %rdx,%rax
   8:	4e 8d 34 f8          	lea    (%rax,%r15,8),%r14
   c:	4c 89 e7             	mov    %r12,%rdi
   f:	e8 45 ca a6 02       	call   0x2a6ca59
  14:	4c 89 f3             	mov    %r14,%rbx
  17:	48 c1 eb 03          	shr    $0x3,%rbx
  1b:	42 80 3c 2b 00       	cmpb   $0x0,(%rbx,%r13,1)
  20:	74 08                	je     0x2a
  22:	4c 89 f7             	mov    %r14,%rdi
  25:	e8 2f 4e 09 00       	call   0x94e59
* 2a:	4d 8b 3e             	mov    (%r14),%r15 <-- trapping instruction
  2d:	44 89 fe             	mov    %r15d,%esi
  30:	81 e6 01 01 00 00    	and    $0x101,%esi
  36:	31 ff                	xor    %edi,%edi
  38:	e8 3c 57 db ff       	call   0xffdb5779
  3d:	44 89 f8             	mov    %r15d,%eax