Code: ff ff c3 66 2e 0f 1f 84 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdd34cc8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000137
RAX: ffffffffffffffda RBX: 00007fdd35ca7100 RCX: 00007fdd35b94049
RDX: 0000000000000001 RSI: 0000000020c22000 RDI: 0000000000001255
RBP: 00007fdd35bee08d R08: 0000000000000001 R09: 0000000000000000
R10: 0000000020c22fa0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd070bdebf R14: 00007fdd34cc8300 R15: 0000000000022000
---[ end trace 98095b62af82adde ]---
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2648!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 27567 Comm: syz-executor.4 Tainted: G        W         5.10.109-syzkaller-00693-g414e6c8e941c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:mpage_prepare_extent_to_map+0xbe9/0xc00 fs/ext4/inode.c:2648
Code: e8 6c d8 c9 ff e9 80 f6 ff ff 44 89 e9 80 e1 07 38 c1 0f 8c a6 fe ff ff 4c 89 ef e8 51 d8 c9 ff e9 99 fe ff ff e8 67 d2 8f ff <0f> 0b e8 60 d2 8f ff 0f 0b e8 b9 e2 b8 02 66 0f 1f 84 00 00 00 00
RSP: 0018:ffffc90001907060 EFLAGS: 00010293
RAX: ffffffff81dd28f9 RBX: 0000000000000000 RCX: ffff888111a32780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90001907230 R08: ffffffff81dd2571 R09: fffff94000aff6e1
R10: fffff94000aff6e1 R11: 0000000000000000 R12: ffffea00057fb700
R13: ffffc90001907120 R14: 00000000000000a1 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffa26b1f68 CR3: 0000000147532000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_writepages+0xcbb/0x3950 fs/ext4/inode.c:2777
 do_writepages+0x13a/0x280 mm/page-writeback.c:2358
 __filemap_fdatawrite_range+0x356/0x420 mm/filemap.c:427
 __filemap_fdatawrite mm/filemap.c:435 [inline]
 filemap_flush+0x23/0x30 mm/filemap.c:462
 ext4_alloc_da_blocks+0x71/0x180 fs/ext4/inode.c:3200
 ext4_release_file+0x84/0x320 fs/ext4/file.c:144
 __fput+0x348/0x7d0 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x147/0x1b0 kernel/task_work.c:154
 exit_task_work include/linux/task_work.h:30 [inline]
 do_exit+0x668/0x2300 kernel/exit.c:813
 do_group_exit+0x16a/0x2d0 kernel/exit.c:910
 get_signal+0x131f/0x1f70 kernel/signal.c:2780
 arch_do_signal+0x8d/0x620 arch/x86/kernel/signal.c:805
 exit_to_user_mode_loop kernel/entry/common.c:161 [inline]
 exit_to_user_mode_prepare+0xaa/0xe0 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266
 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fdd35b94049
Code: Unable to access opcode bytes at RIP 0x7fdd35b9401f.
RSP: 002b:00007fdd34cc8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000137
RAX: 0000000000001f80 RBX: 00007fdd35ca7100 RCX: 00007fdd35b94049
RDX: 0000000000000001 RSI: 0000000020c22000 RDI: 0000000000001255
RBP: 00007fdd35bee08d R08: 0000000000000001 R09: 0000000000000000
R10: 0000000020c22fa0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd070bdebf R14: 00007fdd34cc8300 R15: 0000000000022000
Modules linked in:
---[ end trace 98095b62af82addf ]---
RIP: 0010:mpage_prepare_extent_to_map+0xbe9/0xc00 fs/ext4/inode.c:2648
Code: e8 6c d8 c9 ff e9 80 f6 ff ff 44 89 e9 80 e1 07 38 c1 0f 8c a6 fe ff ff 4c 89 ef e8 51 d8 c9 ff e9 99 fe ff ff e8 67 d2 8f ff <0f> 0b e8 60 d2 8f ff 0f 0b e8 b9 e2 b8 02 66 0f 1f 84 00 00 00 00
RSP: 0018:ffffc90001907060 EFLAGS: 00010293
RAX: ffffffff81dd28f9 RBX: 0000000000000000 RCX: ffff888111a32780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90001907230 R08: ffffffff81dd2571 R09: fffff94000aff6e1
R10: fffff94000aff6e1 R11: 0000000000000000 R12: ffffea00057fb700
R13: ffffc90001907120 R14: 00000000000000a1 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5ab9bc4718 CR3: 0000000147532000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	nopw   %cs:0x0(%rax,%rax,1)
   9:	00 00 00
   c:	0f 1f 40 00          	nopl   0x0(%rax)
  10:	48 89 f8             	mov    %rdi,%rax
  13:	48 89 f7             	mov    %rsi,%rdi
  16:	48 89 d6             	mov    %rdx,%rsi
  19:	48 89 ca             	mov    %rcx,%rdx
  1c:	4d 89 c2             	mov    %r8,%r10
  1f:	4d 89 c8             	mov    %r9,%r8
  22:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  27:	0f 05                	syscall
* 29:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax <-- trapping instruction
  2f:	73 01                	jae    0x32
  31:	c3                   	retq
  32:	48 c7 c1 b8 ff ff ff 	mov    $0xffffffffffffffb8,%rcx
  39:	f7 d8                	neg    %eax
  3b:	64 89 01             	mov    %eax,%fs:(%rcx)
  3e:	48                   	rex.W