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BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: null-ptr-deref in atomic_inc include/linux/atomic/atomic-instrumented.h:190 [inline]
BUG: KASAN: null-ptr-deref in xfs_filestream_create_association fs/xfs/xfs_filestream.c:321 [inline]
BUG: KASAN: null-ptr-deref in xfs_filestream_select_ag+0x13f3/0x1cc0 fs/xfs/xfs_filestream.c:372
Write of size 4 at addr 0000000000000010 by task syz-executor.3/16125

CPU: 1 PID: 16125 Comm: syz-executor.3 Not tainted 6.3.0-syzkaller-12423-g865fdb08197e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 print_report mm/kasan/report.c:465 [inline]
 kasan_report+0xec/0x130 mm/kasan/report.c:572
 check_region_inline mm/kasan/generic.c:181 [inline]
 kasan_check_range+0x141/0x190 mm/kasan/generic.c:187
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_inc include/linux/atomic/atomic-instrumented.h:190 [inline]
 xfs_filestream_create_association fs/xfs/xfs_filestream.c:321 [inline]
 xfs_filestream_select_ag+0x13f3/0x1cc0 fs/xfs/xfs_filestream.c:372
 xfs_bmap_btalloc_filestreams fs/xfs/libxfs/xfs_bmap.c:3592 [inline]
 xfs_bmap_btalloc+0xe58/0x1c10 fs/xfs/libxfs/xfs_bmap.c:3706
 xfs_bmap_alloc_userdata fs/xfs/libxfs/xfs_bmap.c:4080 [inline]
 xfs_bmapi_allocate+0x597/0x1200 fs/xfs/libxfs/xfs_bmap.c:4123
 xfs_bmapi_convert_delalloc+0x3e7/0xd20 fs/xfs/libxfs/xfs_bmap.c:4588
 xfs_convert_blocks fs/xfs/xfs_aops.c:266 [inline]
 xfs_map_blocks+0x74c/0xf80 fs/xfs/xfs_aops.c:389
 iomap_writepage_map fs/iomap/buffered-io.c:1634 [inline]
 iomap_do_writepage+0xa1e/0x23d0 fs/iomap/buffered-io.c:1796
 write_cache_pages+0x4a2/0xd30 mm/page-writeback.c:2473
 iomap_writepages+0x4f/0xb0 fs/iomap/buffered-io.c:1813
 xfs_vm_writepages+0x138/0x1c0 fs/xfs/xfs_aops.c:513
 do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
 filemap_fdatawrite_wbc mm/filemap.c:390 [inline]
 filemap_fdatawrite_wbc+0x147/0x1b0 mm/filemap.c:380
 __filemap_fdatawrite_range+0xb8/0xf0 mm/filemap.c:423
 filemap_write_and_wait_range mm/filemap.c:678 [inline]
 filemap_write_and_wait_range+0xa1/0x120 mm/filemap.c:669
 __iomap_dio_rw+0x65f/0x1f90 fs/iomap/direct-io.c:569
 iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:688
 xfs_file_dio_read+0x327/0x450 fs/xfs/xfs_file.c:235
 xfs_file_read_iter+0x429/0x5b0 fs/xfs/xfs_file.c:300
 call_read_iter include/linux/fs.h:1862 [inline]
 generic_file_splice_read+0x182/0x4b0 fs/splice.c:403
 do_splice_to+0x1b9/0x240 fs/splice.c:886
 splice_direct_to_actor+0x2ab/0x8a0 fs/splice.c:957
 do_splice_direct+0x1ab/0x280 fs/splice.c:1066
 do_sendfile+0xb19/0x12c0 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64 fs/read_write.c:1308 [inline]
 __x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1308
 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+0x63/0xcd
RIP: 0033:0x7f736c68c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f736d35e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f736c7ac050 RCX: 00007f736c68c169
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000004
RBP: 00007f736c6e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc4e36439f R14: 00007f736d35e300 R15: 0000000000022000
 </TASK>
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