general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 PID: 7680 Comm: syz-executor.5 Not tainted 6.3.0-rc6-next-20230414-syzkaller-12018-gd3f2cd248191 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:folio_inode include/linux/pagemap.h:400 [inline]
RIP: 0010:folio_wait_stable+0x23/0xe0 mm/page-writeback.c:3132
Code: 00 00 00 0f 1f 40 00 f3 0f 1e fa 55 48 89 fd 53 e8 82 93 d1 ff 48 8d 7d 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a4 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffffc90005c8f0b0 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: ffff8880860c52b0 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff81b1e30e RDI: 0000000000000016
RBP: fffffffffffffffe R08: 0000000000000005 R09: 00000000ffffffef
R10: 00000000fffffff4 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880860c54d8 R14: 00000000027e2000 R15: ffff8880860c5050
FS:  000055555681b400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0d7df86058 CR3: 000000006bec1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_da_write_begin+0x47f/0x8b0 fs/ext4/inode.c:2939
 generic_perform_write+0x256/0x570 mm/filemap.c:3921
 ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:289
 ext4_file_write_iter+0xbe0/0x1740 fs/ext4/file.c:710
 __kernel_write_iter+0x262/0x7a0 fs/read_write.c:517
 dump_emit_page fs/coredump.c:886 [inline]
 dump_user_range+0x23c/0x710 fs/coredump.c:914
 elf_core_dump+0x277e/0x36e0 fs/binfmt_elf.c:2142
 do_coredump+0x2ed0/0x3fb0 fs/coredump.c:762
 get_signal+0x1bff/0x25b0 kernel/signal.c:2845
 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:307
 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:286 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2e76c8d591
Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3c 00 00 00
RSP: 002b:00007ffcd5b8ebe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff5 RBX: 00007f2e757fe700 RCX: 00007f2e76c8d591
RDX: 00007f2e757fe9d0 RSI: 00007f2e757fe2f0 RDI: 00000000003d0f00
RBP: 00007ffcd5b8ee30 R08: 00007f2e757fe700 R09: 00007f2e757fe700
R10: 00007f2e757fe9d0 R11: 0000000000000206 R12: 00007ffcd5b8ec9e
R13: 00007ffcd5b8ec9f R14: 00007f2e757fe300 R15: 000055555681ca60
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_inode include/linux/pagemap.h:400 [inline]
RIP: 0010:folio_wait_stable+0x23/0xe0 mm/page-writeback.c:3132
Code: 00 00 00 0f 1f 40 00 f3 0f 1e fa 55 48 89 fd 53 e8 82 93 d1 ff 48 8d 7d 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a4 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffffc90005c8f0b0 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: ffff8880860c52b0 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff81b1e30e RDI: 0000000000000016
RBP: fffffffffffffffe R08: 0000000000000005 R09: 00000000ffffffef
R10: 00000000fffffff4 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880860c54d8 R14: 00000000027e2000 R15: ffff8880860c5050
FS:  000055555681b400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0d7df86058 CR3: 000000006bec1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	00 00                	add    %al,(%rax)
   2:	0f 1f 40 00          	nopl   0x0(%rax)
   6:	f3 0f 1e fa          	endbr64
   a:	55                   	push   %rbp
   b:	48 89 fd             	mov    %rdi,%rbp
   e:	53                   	push   %rbx
   f:	e8 82 93 d1 ff       	callq  0xffd19396
  14:	48 8d 7d 18          	lea    0x18(%rbp),%rdi
  18:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1f:	fc ff df
  22:	48 89 fa             	mov    %rdi,%rdx
  25:	48 c1 ea 03          	shr    $0x3,%rdx
* 29:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2d:	0f 85 a4 00 00 00    	jne    0xd7
  33:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  3a:	fc ff df
  3d:	48                   	rex.W
  3e:	8b                   	.byte 0x8b