R13: 00000000004c0b96 R14: 00000000004d3700 R15: 0000000000000004
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 7718 Comm: syz-executor.2 Not tainted 5.4.0-rc3+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:mpage_map_and_submit_extent fs/ext4/inode.c:2557 [inline]
RIP: 0010:ext4_writepages+0x122d/0x27b0 fs/ext4/inode.c:2911
Code: ff ff e8 a6 c0 ba ff 48 8b 85 18 fe ff ff 48 8b b5 38 fe ff ff 48 8d 78 10 48 89 fa 48 c1 ea 03 0f b6 8e c2 00 00 00 48 d3 e3 <42> 80 3c 22 00 0f 85 96 13 00 00 48 89 58 10 48 c7 c0 c8 64 18 89
RSP: 0018:ffff88808f0478d0 EFLAGS: 00010206
RAX: fffffffffffffff4 RBX: 00000000007ff000 RCX: 000000000000000c
RDX: 0000000000000000 RSI: ffff8880a6597308 RDI: 0000000000000004
RBP: ffff88808f047af0 R08: ffffed1015d66b75 R09: ffffed1015d66b75
R10: ffffed1015d66b74 R11: ffff8880aeb35ba3 R12: dffffc0000000000
R13: ffff8880a6597308 R14: 0000000000000001 R15: ffff8880a6597308
FS:  00007efd7985d700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001de5fd0 CR3: 00000000a11b7000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ? 0xffffffff81000000
 do_writepages+0xca/0x240 mm/page-writeback.c:2344
 __filemap_fdatawrite_range+0x25f/0x330 mm/filemap.c:420
 filemap_write_and_wait_range+0xb2/0x160 mm/filemap.c:680
 ext4_punch_hole+0x208/0x1030 fs/ext4/inode.c:4314
 ext4_fallocate+0x2c2/0x1c70 fs/ext4/extents.c:4889
 vfs_fallocate+0x2b5/0x850 fs/open.c:309
 ksys_fallocate+0x3c/0x80 fs/open.c:332
 __do_sys_fallocate fs/open.c:340 [inline]
 __se_sys_fallocate fs/open.c:338 [inline]
 __x64_sys_fallocate+0x92/0xf0 fs/open.c:338
 do_syscall_64+0xca/0x5d0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a219
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007efd7985cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007efd7985cc90 RCX: 000000000045a219
RDX: 0000000000000000 RSI: 0000000100000003 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000028120001 R11: 0000000000000246 R12: 00007efd7985d6d4
R13: 00000000004c0b96 R14: 00000000004d3700 R15: 0000000000000004
Modules linked in:
---[ end trace 0c23badb9a4ae4b1 ]---
RIP: 0010:mpage_map_and_submit_extent fs/ext4/inode.c:2557 [inline]
RIP: 0010:ext4_writepages+0x122d/0x27b0 fs/ext4/inode.c:2911
Code: ff ff e8 a6 c0 ba ff 48 8b 85 18 fe ff ff 48 8b b5 38 fe ff ff 48 8d 78 10 48 89 fa 48 c1 ea 03 0f b6 8e c2 00 00 00 48 d3 e3 <42> 80 3c 22 00 0f 85 96 13 00 00 48 89 58 10 48 c7 c0 c8 64 18 89
RSP: 0018:ffff88808f0478d0 EFLAGS: 00010206
RAX: fffffffffffffff4 RBX: 00000000007ff000 RCX: 000000000000000c
RDX: 0000000000000000 RSI: ffff8880a6597308 RDI: 0000000000000004
RBP: ffff88808f047af0 R08: ffffed1015d66b75 R09: ffffed1015d66b75
R10: ffffed1015d66b74 R11: ffff8880aeb35ba3 R12: dffffc0000000000
R13: ffff8880a6597308 R14: 0000000000000001 R15: ffff8880a6597308
FS:  00007efd7985d700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001de5fd0 CR3: 00000000a11b7000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400