==================================================================
BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:193 [inline]
BUG: KASAN: use-after-free in __lt_find include/linux/rbtree_latch.h:118 [inline]
BUG: KASAN: use-after-free in latch_tree_find include/linux/rbtree_latch.h:208 [inline]
BUG: KASAN: use-after-free in bpf_prog_kallsyms_find kernel/bpf/core.c:511 [inline]
BUG: KASAN: use-after-free in bpf_prog_kallsyms_find+0x2a9/0x2c0 kernel/bpf/core.c:504
Read of size 8 at addr ffff8880a9195600 by task blkid/5188

CPU: 1 PID: 5188 Comm: blkid Not tainted 4.19.91-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 print_address_description.cold+0x7c/0x20d mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report mm/kasan/report.c:412 [inline]
 kasan_report.cold+0x8c/0x2ba mm/kasan/report.c:396
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 __read_once_size include/linux/compiler.h:193 [inline]
 __lt_find include/linux/rbtree_latch.h:118 [inline]
 latch_tree_find include/linux/rbtree_latch.h:208 [inline]
 bpf_prog_kallsyms_find kernel/bpf/core.c:511 [inline]
 bpf_prog_kallsyms_find+0x2a9/0x2c0 kernel/bpf/core.c:504
 is_bpf_text_address+0x78/0x170 kernel/bpf/core.c:546
 kernel_text_address+0x73/0xf0 kernel/extable.c:152
 __kernel_text_address+0xd/0x40 kernel/extable.c:107
 unwind_get_return_address arch/x86/kernel/unwind_frame.c:18 [inline]
 unwind_get_return_address+0x61/0xa0 arch/x86/kernel/unwind_frame.c:13
netlink: 72 bytes leftover after parsing attributes in process `syz-executor.1'.
 __save_stack_trace+0x99/0x100 arch/x86/kernel/stacktrace.c:45
 save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60
 save_stack+0x45/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc mm/kasan/kasan.c:553 [inline]
 kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:531
 kasan_slab_alloc+0xf/0x20 mm/kasan/kasan.c:490
 kmem_cache_alloc+0x12e/0x700 mm/slab.c:3559
 vm_area_dup+0x21/0x170 kernel/fork.c:319
 __split_vma+0xab/0x560 mm/mmap.c:2628
 do_munmap+0xc7f/0xed0 mm/mmap.c:2746
 mmap_region+0x224/0x1760 mm/mmap.c:1706
 do_mmap+0x8e2/0x1080 mm/mmap.c:1536
 do_mmap_pgoff include/linux/mm.h:2314 [inline]
 vm_mmap_pgoff+0x1c5/0x230 mm/util.c:357
 ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1586
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline]
 __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f8e3c7b13ea
Code: 48 8d 3d 81 69 00 00 b2 84 e8 52 ec ff ff f7 d8 89 05 ae ad 20 00 eb c6 90 90 90 90 90 90 90 90 49 89 ca b8 09 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d 8a ad 20 00 31 d2 48 29 c2 89
RSP: 002b:00007ffdd86f8568 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f8e3c9b99a8 RCX: 00007f8e3c7b13ea
RDX: 0000000000000003 RSI: 0000000000005000 RDI: 00007f8e3c56a000
RBP: 00007ffdd86f88c0 R08: 0000000000000003 R09: 0000000000183000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffdd86f89a8
R13: 0000000000000002 R14: 00007ffdd86f85e0 R15: 00007ffdd86f85b0

Allocated by task 5185:
 save_stack+0x45/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc mm/kasan/kasan.c:553 [inline]
 kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:531
 kmem_cache_alloc_trace+0x152/0x760 mm/slab.c:3625
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 bpf_prog_alloc+0x216/0x2a0 kernel/bpf/core.c:90
 jit_subprogs kernel/bpf/verifier.c:5814 [inline]
 fixup_call_args kernel/bpf/verifier.c:5933 [inline]
 bpf_check+0x3e7f/0x6259 kernel/bpf/verifier.c:6340
 bpf_prog_load+0xdcb/0x1430 kernel/bpf/syscall.c:1445
 __do_sys_bpf kernel/bpf/syscall.c:2411 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:2373 [inline]
 __x64_sys_bpf+0x32b/0x4c0 kernel/bpf/syscall.c:2373
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 19:
 save_stack+0x45/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x102/0x150 mm/kasan/kasan.c:521
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcf/0x220 mm/slab.c:3822
 bpf_jit_free+0xa5/0x300
 bpf_prog_free_deferred+0x1a6/0x420 kernel/bpf/core.c:1809
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

The buggy address belongs to the object at ffff8880a91955c0
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 64 bytes inside of
 256-byte region [ffff8880a91955c0, ffff8880a91956c0)
The buggy address belongs to the page:
page:ffffea0002a46540 count:1 mapcount:0 mapping:ffff88812c31c7c0 index:0xffff8880a9195e80
flags: 0xfffe0000000100(slab)
raw: 00fffe0000000100 ffffea00028218c8 ffffea0002818f88 ffff88812c31c7c0
raw: ffff8880a9195e80 ffff8880a91950c0 0000000100000008 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880a9195500: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc
 ffff8880a9195580: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
>ffff8880a9195600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff8880a9195680: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff8880a9195700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
netlink: 72 bytes leftover after parsing attributes in process `syz-executor.1'.