==================================================================
BUG: KASAN: slab-out-of-bounds in __trace_probe_log_err+0x2ad/0x2b0 kernel/trace/trace_probe.c:199
Write of size 1 at addr ffff88810af990ff by task syz-executor709/1049

CPU: 1 PID: 1049 Comm: syz-executor709 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x100/0x140 mm/kasan/report.c:452
 __asan_report_store1_noabort+0x17/0x20 mm/kasan/report_generic.c:311
 __trace_probe_log_err+0x2ad/0x2b0 kernel/trace/trace_probe.c:199
 trace_uprobe_create+0x355/0xb90 kernel/trace/trace_uprobe.c:588
 create_or_delete_trace_uprobe+0x89/0xc0 kernel/trace/trace_uprobe.c:731
 trace_run_command kernel/trace/trace.c:9575 [inline]
 trace_parse_run_command+0x296/0x450 kernel/trace/trace.c:9634
 probes_write+0x34/0x40 kernel/trace/trace_uprobe.c:800
 vfs_write+0x344/0xd70 fs/read_write.c:603
 ksys_write+0x14a/0x260 fs/read_write.c:658
 __do_sys_write fs/read_write.c:670 [inline]
 __se_sys_write fs/read_write.c:667 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:667
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fb5f69e55f9
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 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 d8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd6e7ad508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000200000000200 RCX: 00007fb5f69e55f9
RDX: 000000000000000e RSI: 0000200000000280 RDI: 0000000000000003
RBP: 6e69636172742f2e R08: 0000000000000009 R09: 0000000000000009
R10: 0000000000000009 R11: 0000000000000246 R12: 0000000000007163
R13: 00007ffd6e7ad51c R14: 00007ffd6e7ad530 R15: 0000200000000208

Allocated by task 1:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:430 [inline]
 ____kasan_kmalloc mm/kasan/common.c:509 [inline]
 __kasan_kmalloc+0xd4/0x100 mm/kasan/common.c:518
 kasan_kmalloc include/linux/kasan.h:254 [inline]
 __kmalloc+0x19f/0x330 mm/slub.c:4038
 __kmalloc_node include/linux/slab.h:421 [inline]
 kmalloc_array_node include/linux/slab.h:630 [inline]
 mempool_init_node+0x129/0x4a0 mm/mempool.c:191
 mempool_init+0x3c/0x50 mm/mempool.c:231
 mempool_init_slab_pool include/linux/mempool.h:62 [inline]
 bioset_init+0x418/0x5f0 block/bio.c:1602
 blk_alloc_queue+0xb7/0x5f0 block/blk-core.c:531
 blk_mq_init_queue_data block/blk-mq.c:3171 [inline]
 blk_mq_init_queue+0x37/0xd0 block/blk-mq.c:3190
 scsi_mq_alloc_queue+0x42/0x140 drivers/scsi/scsi_lib.c:1913
 scsi_alloc_sdev+0x611/0x920 drivers/scsi/scsi_scan.c:284
 scsi_probe_and_add_lun+0x17d/0x3370 drivers/scsi/scsi_scan.c:1098
 __scsi_scan_target+0x1d2/0xbf0 drivers/scsi/scsi_scan.c:1581
 scsi_scan_channel drivers/scsi/scsi_scan.c:1669 [inline]
 scsi_scan_host_selected+0x34e/0x600 drivers/scsi/scsi_scan.c:1698
 do_scsi_scan_host drivers/scsi/scsi_scan.c:1837 [inline]
 scsi_scan_host+0x39e/0x670 drivers/scsi/scsi_scan.c:1867
 virtscsi_probe+0x8f6/0xab0 drivers/scsi/virtio_scsi.c:915
 virtio_dev_probe+0x8df/0xb30 drivers/virtio/virtio.c:274
 really_probe+0x373/0xa60 drivers/base/dd.c:558
 driver_probe_device+0xe1/0x190 drivers/base/dd.c:752
 device_driver_attach+0x17a/0x280 drivers/base/dd.c:1035
 __driver_attach+0x15a/0x3a0 drivers/base/dd.c:1124
 bus_for_each_dev+0x17b/0x1f0 drivers/base/bus.c:307
 driver_attach+0x42/0x50 drivers/base/dd.c:1140
 bus_add_driver+0x322/0x560 drivers/base/bus.c:624
 driver_register+0x335/0x440 drivers/base/driver.c:240
 register_virtio_driver+0x9a/0xd0 drivers/virtio/virtio.c:325
 init+0x66/0xde drivers/scsi/virtio_scsi.c:1009
 do_one_initcall+0x205/0x5e0 init/main.c:1172
 do_initcall_level+0x174/0x2dc init/main.c:1245
 do_initcalls+0x50/0x92 init/main.c:1261
 do_basic_setup+0x88/0x8f init/main.c:1281
 kernel_init_freeable+0x28c/0x3c3 init/main.c:1485
 kernel_init+0x11/0x1a0 init/main.c:1372
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

The buggy address belongs to the object at ffff88810af990e0
 which belongs to the cache kmalloc-16 of size 16
The buggy address is located 15 bytes to the right of
 16-byte region [ffff88810af990e0, ffff88810af990f0)
The buggy address belongs to the page:
page:ffffea00042be640 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10af99
flags: 0x4000000000000200(slab)
raw: 4000000000000200 ffffea00042b3900 0000000a0000000a ffff888100043b00
raw: 0000000000000000 0000000080800080 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 2461391338, free_ts 0
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x176/0x190 mm/page_alloc.c:2462
 get_page_from_freelist+0x225f/0x23f0 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x29a/0x640 mm/page_alloc.c:5384
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1813 [inline]
 new_slab+0x84/0x3f0 mm/slub.c:1874
 new_slab_objects mm/slub.c:2632 [inline]
 ___slab_alloc+0x2f8/0x4c0 mm/slub.c:2796
 __slab_alloc+0x63/0xa0 mm/slub.c:2836
 slab_alloc_node mm/slub.c:2918 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 __kmalloc+0x1f9/0x330 mm/slub.c:4034
 __kmalloc_node include/linux/slab.h:421 [inline]
 kmalloc_array_node include/linux/slab.h:630 [inline]
 mempool_init_node+0x129/0x4a0 mm/mempool.c:191
 mempool_init+0x3c/0x50 mm/mempool.c:231
 mempool_init_slab_pool include/linux/mempool.h:62 [inline]
 bioset_init+0x418/0x5f0 block/bio.c:1602
 blk_alloc_queue+0xb7/0x5f0 block/blk-core.c:531
 blk_mq_init_queue_data block/blk-mq.c:3171 [inline]
 blk_mq_init_queue+0x37/0xd0 block/blk-mq.c:3190
 scsi_mq_alloc_queue+0x42/0x140 drivers/scsi/scsi_lib.c:1913
 scsi_alloc_sdev+0x611/0x920 drivers/scsi/scsi_scan.c:284
 scsi_probe_and_add_lun+0x17d/0x3370 drivers/scsi/scsi_scan.c:1098
 __scsi_scan_target+0x1d2/0xbf0 drivers/scsi/scsi_scan.c:1581
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88810af98f80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff88810af99000: fa fb fc fc fa fb fc fc fa fb fc fc fb fb fc fc
>ffff88810af99080: fa fb fc fc fa fb fc fc fa fb fc fc fb fb fc fc
                                                                ^
 ffff88810af99100: 00 07 fc fc fa fb fc fc fa fb fc fc fa fb fc fc
 ffff88810af99180: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
==================================================================