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BUG: KASAN: slab-out-of-bounds in memcpy include/linux/fortify-string.h:191 [inline]
BUG: KASAN: slab-out-of-bounds in skb_put_data include/linux/skbuff.h:2297 [inline]
BUG: KASAN: slab-out-of-bounds in qrtr_endpoint_post+0x5c0/0x11b0 net/qrtr/qrtr.c:503
Read of size 4294967294 at addr ffff88802330f890 by task syz-executor.1/12299

CPU: 1 PID: 12299 Comm: syz-executor.1 Not tainted 5.13.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0x5b/0x2c6 mm/kasan/report.c:233
 __kasan_report mm/kasan/report.c:419 [inline]
 kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:436
 check_region_inline mm/kasan/generic.c:180 [inline]
 kasan_check_range+0x13d/0x180 mm/kasan/generic.c:186
 memcpy+0x20/0x60 mm/kasan/shadow.c:65
 memcpy include/linux/fortify-string.h:191 [inline]
 skb_put_data include/linux/skbuff.h:2297 [inline]
 qrtr_endpoint_post+0x5c0/0x11b0 net/qrtr/qrtr.c:503
 qrtr_tun_write_iter+0x10e/0x1b0 net/qrtr/tun.c:108
 call_write_iter include/linux/fs.h:2114 [inline]
 new_sync_write+0x426/0x650 fs/read_write.c:518
 vfs_write+0x796/0xa30 fs/read_write.c:605
 ksys_write+0x12d/0x250 fs/read_write.c:658
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8e72910188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665d9
RDX: 0000000000000010 RSI: 00000000200003c0 RDI: 0000000000000004
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffdb5118f5f R14: 00007f8e72910300 R15: 0000000000022000

Allocated by task 12299:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:428 [inline]
 ____kasan_kmalloc mm/kasan/common.c:507 [inline]
 ____kasan_kmalloc mm/kasan/common.c:466 [inline]
 __kasan_kmalloc+0x98/0xc0 mm/kasan/common.c:516
 kasan_kmalloc include/linux/kasan.h:246 [inline]
 __do_kmalloc mm/slab.c:3702 [inline]
 __kmalloc+0x22a/0x4d0 mm/slab.c:3711
 kmalloc include/linux/slab.h:561 [inline]
 kzalloc include/linux/slab.h:686 [inline]
 qrtr_tun_write_iter+0xc2/0x1b0 net/qrtr/tun.c:99
 call_write_iter include/linux/fs.h:2114 [inline]
 new_sync_write+0x426/0x650 fs/read_write.c:518
 vfs_write+0x796/0xa30 fs/read_write.c:605
 ksys_write+0x12d/0x250 fs/read_write.c:658
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

The buggy address belongs to the object at ffff88802330f880
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 16 bytes inside of
 32-byte region [ffff88802330f880, ffff88802330f8a0)
The buggy address belongs to the page:
page:ffffea00008cc3c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88802330ffc1 pfn:0x2330f
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 ffffea00007aaa88 ffffea000065a048 ffff888011040100
raw: ffff88802330ffc1 ffff88802330f000 000000010000003f 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 0x2420c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_COMP|__GFP_THISNODE), pid 1, ts 10181076802, free_ts 10032757112
 prep_new_page mm/page_alloc.c:2358 [inline]
 get_page_from_freelist+0x1033/0x2b60 mm/page_alloc.c:3994
 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5200
 __alloc_pages_node include/linux/gfp.h:549 [inline]
 kmem_getpages mm/slab.c:1377 [inline]
 cache_grow_begin+0x75/0x460 mm/slab.c:2593
 cache_alloc_refill+0x27f/0x380 mm/slab.c:2965
 ____cache_alloc mm/slab.c:3048 [inline]
 ____cache_alloc mm/slab.c:3031 [inline]
 __do_cache_alloc mm/slab.c:3275 [inline]
 slab_alloc mm/slab.c:3316 [inline]
 __do_kmalloc mm/slab.c:3700 [inline]
 __kmalloc+0x3eb/0x4d0 mm/slab.c:3711
 kmalloc include/linux/slab.h:561 [inline]
 kzalloc include/linux/slab.h:686 [inline]
 kobject_get_path+0xbe/0x230 lib/kobject.c:179
 kobject_uevent_env+0x265/0x1650 lib/kobject_uevent.c:529
 device_add+0xb71/0x2100 drivers/base/core.c:3301
 platform_device_add+0x363/0x820 drivers/base/platform.c:748
 init+0x5d5/0xba7 arch/x86/crypto/des3_ede_glue.c:371
 do_one_initcall+0x103/0x650 init/main.c:1249
 do_initcall_level init/main.c:1322 [inline]
 do_initcalls init/main.c:1338 [inline]
 do_basic_setup init/main.c:1358 [inline]
 kernel_init_freeable+0x643/0x6cc init/main.c:1560
 kernel_init+0xd/0x1b8 init/main.c:1447
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1298 [inline]
 free_pcp_prepare+0x223/0x300 mm/page_alloc.c:1342
 free_unref_page_prepare mm/page_alloc.c:3250 [inline]
 free_unref_page_list+0x19b/0x7c0 mm/page_alloc.c:3318
 release_pages+0x853/0x2120 mm/swap.c:972
 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:242 [inline]
 tlb_flush_mmu mm/mmu_gather.c:249 [inline]
 tlb_finish_mmu+0x165/0x8c0 mm/mmu_gather.c:340
 exit_mmap+0x2c2/0x590 mm/mmap.c:3210
 __mmput+0x122/0x470 kernel/fork.c:1096
 mmput+0x58/0x60 kernel/fork.c:1117
 free_bprm+0x65/0x2e0 fs/exec.c:1478
 kernel_execve+0x380/0x460 fs/exec.c:1975
 call_usermodehelper_exec_async+0x2e3/0x580 kernel/umh.c:112
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Memory state around the buggy address:
 ffff88802330f780: 00 fc fc fc fc fc fc fc fa fb fb fb fc fc fc fc
 ffff88802330f800: 00 00 fc fc fc fc fc fc 00 00 00 00 fc fc fc fc
>ffff88802330f880: 00 00 fc fc fc fc fc fc 00 00 00 00 fc fc fc fc
                         ^
 ffff88802330f900: 00 00 fc fc fc fc fc fc 00 00 00 fc fc fc fc fc
 ffff88802330f980: 00 fc fc fc fc fc fc fc 00 07 fc fc fc fc fc fc
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