UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 76d8b067 P4D 76d8b067 PUD bbf9067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3642 Comm: syz-executor.0 Not tainted 6.1.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc900036bf340 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88806dd309d8 RCX: ffffffff817d199f
RDX: 1ffffffff0ca1188 RSI: ffffc900036bf6a0 RDI: ffffea0001a7bdc0
RBP: ffffea0001a7bdc0 R08: 0000000000000000 R09: ffffffff883e9097
R10: fffffbfff107d212 R11: 000000000000002a R12: ffffffff86508c40
R13: 0000000000000001 R14: ffffea0001a7bde0 R15: ffff88800c38e000
FS:  00007f8410d5b6c0(0000) GS:ffff8880ba900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000006bdeb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __writepage+0x5d/0x140 mm/page-writeback.c:2425
 write_cache_pages+0x4f1/0x1320 mm/page-writeback.c:2360
 generic_writepages mm/page-writeback.c:2451 [inline]
 do_writepages+0x269/0x650 mm/page-writeback.c:2471
 filemap_fdatawrite_wbc mm/filemap.c:388 [inline]
 filemap_fdatawrite_wbc+0x10a/0x170 mm/filemap.c:378
 __filemap_fdatawrite_range+0xaa/0xe0 mm/filemap.c:421
 file_write_and_wait_range+0x89/0xf0 mm/filemap.c:774
 __generic_file_fsync+0x65/0x190 fs/libfs.c:1116
 generic_file_fsync+0x5a/0x110 fs/libfs.c:1157
 generic_write_sync include/linux/fs.h:2883 [inline]
 udf_file_write_iter+0x387/0x540 fs/udf/file.c:176
 call_write_iter include/linux/fs.h:2191 [inline]
 do_iter_readv_writev+0x1a2/0x2f0 fs/read_write.c:735
 do_iter_write+0x122/0x6a0 fs/read_write.c:861
 iter_file_splice_write+0x579/0xaf0 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0xff/0x1d0 fs/splice.c:931
 splice_direct_to_actor+0x241/0x7b0 fs/splice.c:886
 do_splice_direct+0x154/0x260 fs/splice.c:974
 do_sendfile+0x931/0x1240 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64 fs/read_write.c:1309 [inline]
 __x64_sys_sendfile64+0x17a/0x1c0 fs/read_write.c:1309
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x64/0xce
RIP: 0033:0x7f841007cb29
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:00007f8410d5b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f841019bf80 RCX: 00007f841007cb29
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007f84100c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f841019bf80 R15: 00007fffecb5ec38
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc900036bf340 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88806dd309d8 RCX: ffffffff817d199f
RDX: 1ffffffff0ca1188 RSI: ffffc900036bf6a0 RDI: ffffea0001a7bdc0
RBP: ffffea0001a7bdc0 R08: 0000000000000000 R09: ffffffff883e9097
R10: fffffbfff107d212 R11: 000000000000002a R12: ffffffff86508c40
R13: 0000000000000001 R14: ffffea0001a7bde0 R15: ffff88800c38e000
FS:  00007f8410d5b6c0(0000) GS:ffff8880ba900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000006bdeb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400