XFS (loop0): metadata I/O error in "xfs_read_agf+0x27c/0x500" at daddr 0x1 len 1 error 117
XFS (loop0): page discard on page ffffea0001cbc2c0, inode 0x2a, pos 0.
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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_pick_ag fs/xfs/xfs_filestream.c:156 [inline]
BUG: KASAN: null-ptr-deref in xfs_filestream_create_association fs/xfs/xfs_filestream.c:301 [inline]
BUG: KASAN: null-ptr-deref in xfs_filestream_select_ag+0x188b/0x1cc0 fs/xfs/xfs_filestream.c:372
Write of size 4 at addr 00000000000001c0 by task kworker/u4:4/66

CPU: 1 PID: 66 Comm: kworker/u4:4 Not tainted 6.4.0-rc5-syzkaller-00016-ga4d7d7011219 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Workqueue: writeback wb_workfn (flush-7:0)
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_pick_ag fs/xfs/xfs_filestream.c:156 [inline]
 xfs_filestream_create_association fs/xfs/xfs_filestream.c:301 [inline]
 xfs_filestream_select_ag+0x188b/0x1cc0 fs/xfs/xfs_filestream.c:372
 xfs_bmap_btalloc_filestreams fs/xfs/libxfs/xfs_bmap.c:3593 [inline]
 xfs_bmap_btalloc+0xe58/0x1c10 fs/xfs/libxfs/xfs_bmap.c:3707
 xfs_bmap_alloc_userdata fs/xfs/libxfs/xfs_bmap.c:4081 [inline]
 xfs_bmapi_allocate+0x597/0x1200 fs/xfs/libxfs/xfs_bmap.c:4124
 xfs_bmapi_convert_delalloc+0x3e7/0xd20 fs/xfs/libxfs/xfs_bmap.c:4589
 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
 __writeback_single_inode+0x121/0xdb0 fs/fs-writeback.c:1603
 writeback_sb_inodes+0x54d/0xe70 fs/fs-writeback.c:1894
 wb_writeback+0x294/0xa50 fs/fs-writeback.c:2068
 wb_do_writeback fs/fs-writeback.c:2211 [inline]
 wb_workfn+0x2a5/0xfc0 fs/fs-writeback.c:2251
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
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