==================================================================
BUG: KASAN: slab-use-after-free in sg_assign_page include/linux/scatterlist.h:109 [inline]
BUG: KASAN: slab-use-after-free in sg_set_page include/linux/scatterlist.h:139 [inline]
BUG: KASAN: slab-use-after-free in __blk_bvec_map_sg block/blk-merge.c:501 [inline]
BUG: KASAN: slab-use-after-free in __blk_bios_map_sg block/blk-merge.c:548 [inline]
BUG: KASAN: slab-use-after-free in __blk_rq_map_sg+0xf74/0xfd0 block/blk-merge.c:575
Read of size 8 at addr ffff888036b5ee80 by task syz-executor.4/5711

CPU: 1 PID: 5711 Comm: syz-executor.4 Not tainted 6.2.0-rc7-next-20230208-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:319
 print_report mm/kasan/report.c:430 [inline]
 kasan_report+0x11c/0x130 mm/kasan/report.c:536
 sg_assign_page include/linux/scatterlist.h:109 [inline]
 sg_set_page include/linux/scatterlist.h:139 [inline]
 __blk_bvec_map_sg block/blk-merge.c:501 [inline]
 __blk_bios_map_sg block/blk-merge.c:548 [inline]
 __blk_rq_map_sg+0xf74/0xfd0 block/blk-merge.c:575
 scsi_alloc_sgtables+0x236/0xf70 drivers/scsi/scsi_lib.c:1048
 sd_setup_read_write_cmnd drivers/scsi/sd.c:1134 [inline]
 sd_init_command+0x67a/0x3290 drivers/scsi/sd.c:1258
 scsi_prepare_cmd drivers/scsi/scsi_lib.c:1603 [inline]
 scsi_queue_rq+0x1e7b/0x3a40 drivers/scsi/scsi_lib.c:1737
 blk_mq_dispatch_rq_list+0x609/0x20b0 block/blk-mq.c:2059
 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:172 [inline]
 blk_mq_do_dispatch_sched+0x95e/0xc20 block/blk-mq-sched.c:186
 __blk_mq_sched_dispatch_requests+0x26d/0x3e0 block/blk-mq-sched.c:312
 blk_mq_sched_dispatch_requests+0x10a/0x190 block/blk-mq-sched.c:338
 __blk_mq_run_hw_queue+0x2b7/0x480 block/blk-mq.c:2177
 __blk_mq_delay_run_hw_queue+0x5f7/0x700 block/blk-mq.c:2253
 blk_mq_run_hw_queue+0x3b5/0x560 block/blk-mq.c:2301
 blk_mq_sched_insert_requests+0x1d9/0xb30 block/blk-mq-sched.c:492
 blk_mq_dispatch_plug_list block/blk-mq.c:2747 [inline]
 blk_mq_flush_plug_list+0x39c/0xe10 block/blk-mq.c:2789
 __blk_flush_plug block/blk-core.c:1150 [inline]
 blk_finish_plug block/blk-core.c:1174 [inline]
 blk_finish_plug+0xbb/0x170 block/blk-core.c:1171
 __iomap_dio_rw+0xf85/0x1d80 fs/iomap/direct-io.c:602
 iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:682
 ext4_dio_read_iter fs/ext4/file.c:94 [inline]
 ext4_file_read_iter+0x4be/0x690 fs/ext4/file.c:145
 call_read_iter include/linux/fs.h:1845 [inline]
 generic_file_splice_read+0x182/0x4b0 fs/splice.c:309
 do_splice_to+0x1b9/0x240 fs/splice.c:792
 splice_direct_to_actor+0x2ab/0x8a0 fs/splice.c:864
 do_splice_direct+0x1ab/0x280 fs/splice.c:973
 do_sendfile+0xb19/0x12c0 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+0x1d0/0x210 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+0x63/0xcd
RIP: 0033:0x7f9bb268c0f9
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:00007f9bb34a2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f9bb27abf80 RCX: 00007f9bb268c0f9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007f9bb26e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcdb586bbf R14: 00007f9bb34a2300 R15: 0000000000022000
 </TASK>

Allocated by task 5532:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 __kasan_slab_alloc+0x7f/0x90 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook mm/slab.h:769 [inline]
 slab_alloc_node mm/slub.c:3452 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x175/0x320 mm/slub.c:3476
 mempool_alloc+0x158/0x360 mm/mempool.c:398
 __sg_alloc_table+0x248/0x380 lib/scatterlist.c:318
 sg_alloc_table_chained+0x9f/0x1f0 lib/sg_pool.c:133
 scsi_alloc_sgtables+0x1cd/0xf70 drivers/scsi/scsi_lib.c:1040
 sd_setup_read_write_cmnd drivers/scsi/sd.c:1134 [inline]
 sd_init_command+0x67a/0x3290 drivers/scsi/sd.c:1258
 scsi_prepare_cmd drivers/scsi/scsi_lib.c:1603 [inline]
 scsi_queue_rq+0x1e7b/0x3a40 drivers/scsi/scsi_lib.c:1737
 blk_mq_dispatch_rq_list+0x609/0x20b0 block/blk-mq.c:2059
 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:172 [inline]
 blk_mq_do_dispatch_sched+0x95e/0xc20 block/blk-mq-sched.c:186
 __blk_mq_sched_dispatch_requests+0x26d/0x3e0 block/blk-mq-sched.c:312
 blk_mq_sched_dispatch_requests+0x10a/0x190 block/blk-mq-sched.c:338
 __blk_mq_run_hw_queue+0x2b7/0x480 block/blk-mq.c:2177
 __blk_mq_delay_run_hw_queue+0x5f7/0x700 block/blk-mq.c:2253
 blk_mq_run_hw_queue+0x3b5/0x560 block/blk-mq.c:2301
 blk_mq_sched_insert_requests+0x1d9/0xb30 block/blk-mq-sched.c:492
 blk_mq_dispatch_plug_list block/blk-mq.c:2747 [inline]
 blk_mq_flush_plug_list+0x39c/0xe10 block/blk-mq.c:2789
 blk_add_rq_to_plug+0x117/0x4f0 block/blk-mq.c:1297
 blk_mq_submit_bio+0xae9/0x2030 block/blk-mq.c:2983
 __submit_bio+0x2b7/0x340 block/blk-core.c:602
 __submit_bio_noacct_mq block/blk-core.c:679 [inline]
 submit_bio_noacct_nocheck block/blk-core.c:696 [inline]
 submit_bio_noacct_nocheck+0x6cd/0x8a0 block/blk-core.c:685
 submit_bio_noacct+0xa46/0x1fb0 block/blk-core.c:806
 submit_bio block/blk-core.c:842 [inline]
 submit_bio+0x8f/0x1c0 block/blk-core.c:830
 iomap_dio_submit_bio+0x1b0/0x210 fs/iomap/direct-io.c:77
 iomap_dio_bio_iter+0xb2c/0x1440 fs/iomap/direct-io.c:353
 iomap_dio_iter fs/iomap/direct-io.c:436 [inline]
 __iomap_dio_rw+0xd81/0x1d80 fs/iomap/direct-io.c:594
 iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:682
 ext4_dio_write_iter fs/ext4/file.c:587 [inline]
 ext4_file_write_iter+0x1053/0x1710 fs/ext4/file.c:698
 call_write_iter include/linux/fs.h:1851 [inline]
 do_iter_readv_writev+0x20b/0x3b0 fs/read_write.c:735
 do_iter_write+0x182/0x700 fs/read_write.c:861
 vfs_writev+0x1aa/0x670 fs/read_write.c:934
 do_pwritev+0x1b6/0x270 fs/read_write.c:1031
 __do_sys_pwritev2 fs/read_write.c:1090 [inline]
 __se_sys_pwritev2 fs/read_write.c:1081 [inline]
 __x64_sys_pwritev2+0xef/0x150 fs/read_write.c:1081
 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

The buggy address belongs to the object at ffff888036b5ee80
 which belongs to the cache sgpool-64 of size 2048
The buggy address is located 0 bytes inside of
 freed 2048-byte region [ffff888036b5ee80, ffff888036b5f680)

The buggy address belongs to the physical page:
page:ffffea0000dad600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888036b5f700 pfn:0x36b58
head:ffffea0000dad600 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffff8881451cf8c0 ffffea0000dae000 0000000000000002
raw: ffff888036b5f700 00000000800f0000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 5532, tgid 5526 (syz-executor.4), ts 255230201014, free_ts 255176837817
 prep_new_page mm/page_alloc.c:2552 [inline]
 get_page_from_freelist+0x11bb/0x2d50 mm/page_alloc.c:4339
 __alloc_pages+0x1cb/0x5c0 mm/page_alloc.c:5605
 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2283
 alloc_slab_page mm/slub.c:1851 [inline]
 allocate_slab+0x28e/0x380 mm/slub.c:1998
 new_slab mm/slub.c:2051 [inline]
 ___slab_alloc+0xa91/0x1400 mm/slub.c:3193
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3292
 __slab_alloc_node mm/slub.c:3345 [inline]
 slab_alloc_node mm/slub.c:3442 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x30a/0x320 mm/slub.c:3476
 mempool_alloc+0x158/0x360 mm/mempool.c:398
 __sg_alloc_table+0x248/0x380 lib/scatterlist.c:318
 sg_alloc_table_chained+0x9f/0x1f0 lib/sg_pool.c:133
 scsi_alloc_sgtables+0x1cd/0xf70 drivers/scsi/scsi_lib.c:1040
 sd_setup_read_write_cmnd drivers/scsi/sd.c:1134 [inline]
 sd_init_command+0x67a/0x3290 drivers/scsi/sd.c:1258
 scsi_prepare_cmd drivers/scsi/scsi_lib.c:1603 [inline]
 scsi_queue_rq+0x1e7b/0x3a40 drivers/scsi/scsi_lib.c:1737
 blk_mq_dispatch_rq_list+0x609/0x20b0 block/blk-mq.c:2059
 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:172 [inline]
 blk_mq_do_dispatch_sched+0x95e/0xc20 block/blk-mq-sched.c:186
 __blk_mq_sched_dispatch_requests+0x26d/0x3e0 block/blk-mq-sched.c:312
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1453 [inline]
 free_pcp_prepare+0x4d0/0x910 mm/page_alloc.c:1503
 free_unref_page_prepare mm/page_alloc.c:3401 [inline]
 free_unref_page+0x1d/0x490 mm/page_alloc.c:3496
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x195/0x220 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x63/0x90 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook mm/slab.h:769 [inline]
 slab_alloc_node mm/slub.c:3452 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x175/0x320 mm/slub.c:3476
 kmem_cache_zalloc include/linux/slab.h:710 [inline]
 __alloc_file+0x21/0x270 fs/file_table.c:139
 alloc_empty_file+0x71/0x190 fs/file_table.c:188
 path_openat+0xe6/0x2750 fs/namei.c:3701
 do_filp_open+0x1ba/0x410 fs/namei.c:3742
 do_sys_openat2+0x16d/0x4c0 fs/open.c:1312
 do_sys_open fs/open.c:1328 [inline]
 __do_sys_openat fs/open.c:1344 [inline]
 __se_sys_openat fs/open.c:1339 [inline]
 __x64_sys_openat+0x143/0x1f0 fs/open.c:1339
 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

Memory state around the buggy address:
 ffff888036b5ed80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888036b5ee00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888036b5ee80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff888036b5ef00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888036b5ef80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================