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BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:182 [inline]
BUG: KASAN: use-after-free in list_empty include/linux/list.h:226 [inline]
BUG: KASAN: use-after-free in bpf_prog_ksym_node_add kernel/bpf/core.c:459 [inline]
BUG: KASAN: use-after-free in bpf_prog_kallsyms_add+0x95a/0x9b0 kernel/bpf/core.c:491
Read of size 8 at addr ffff8881bbac02e0 by task syz-executor2/21712

CPU: 1 PID: 21712 Comm: syz-executor2 Not tainted 4.20.0-rc2+ #338
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+0x244/0x39d lib/dump_stack.c:113
 print_address_description.cold.7+0x9/0x1ff mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.8+0x242/0x309 mm/kasan/report.c:412
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 __read_once_size include/linux/compiler.h:182 [inline]
 list_empty include/linux/list.h:226 [inline]
 bpf_prog_ksym_node_add kernel/bpf/core.c:459 [inline]
 bpf_prog_kallsyms_add+0x95a/0x9b0 kernel/bpf/core.c:491
 bpf_prog_load+0x13dc/0x1cc0 kernel/bpf/syscall.c:1552
 __do_sys_bpf kernel/bpf/syscall.c:2504 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:2466 [inline]
 __x64_sys_bpf+0x36c/0x520 kernel/bpf/syscall.c:2466
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
ecryptfs_parse_options: eCryptfs: unrecognized option [nfs4]
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
ecryptfs_parse_options: You must supply at least one valid auth tok signature as a mount parameter; see the eCryptfs README
RIP: 0033:0x457569
Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f6707161c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 0000000000000048 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f67071626d4
R13: 00000000004bd97c R14: 00000000004cc688 R15: 00000000ffffffff
Error parsing options; rc = [-22]

Allocated by task 21712:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:553
 kmem_cache_alloc_trace+0x152/0x750 mm/slab.c:3620
 kmalloc include/linux/slab.h:546 [inline]
 kzalloc include/linux/slab.h:741 [inline]
 bpf_prog_alloc+0x16b/0x3e0 kernel/bpf/core.c:89
 bpf_prog_load+0x435/0x1cc0 kernel/bpf/syscall.c:1482
 __do_sys_bpf kernel/bpf/syscall.c:2504 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:2466 [inline]
 __x64_sys_bpf+0x36c/0x520 kernel/bpf/syscall.c:2466
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 9808:
 save_stack+0x43/0xd0 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:3498 [inline]
 kfree+0xcf/0x230 mm/slab.c:3817
 bpf_jit_free+0xfa/0x3f0
 bpf_prog_free_deferred+0x2d9/0x420 kernel/bpf/core.c:1783
 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153
 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352

The buggy address belongs to the object at ffff8881bbac0280
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 96 bytes inside of
 512-byte region [ffff8881bbac0280, ffff8881bbac0480)
The buggy address belongs to the page:
page:ffffea0006eeb000 count:1 mapcount:0 mapping:ffff8881da800940 index:0xffff8881bbac0a00
flags: 0x2fffc0000000200(slab)
raw: 02fffc0000000200 ffffea0007082bc8 ffffea000719b488 ffff8881da800940
raw: ffff8881bbac0a00 ffff8881bbac0000 0000000100000005 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881bbac0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881bbac0200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881bbac0280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                       ^
 ffff8881bbac0300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881bbac0380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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