kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 31724 Comm: syz-executor.0 Not tainted 4.9.141+ #23 task: ffff880120c25f00 task.stack: ffff8801d3b88000 RIP: 0010:[] [] ebitmap_destroy+0x32/0x100 security/selinux/ss/ebitmap.c:331 RSP: 0018:ffff8801d3b8f3d8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8801c7185040 RCX: ffffc90000967000 RDX: 0000000000000001 RSI: ffffffff81a17f01 RDI: 0000000000000008 RBP: ffff8801d3b8f3f8 R08: ffff880120c26820 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801cef5bdc0 R13: 1ffff1003a771e87 R14: 0000000000000008 R15: ffff8801d3b8f498 FS: 0000000000000000(0000) GS:ffff8801db700000(0063) knlGS:00000000f5521b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000008484bb8 CR3: 0000000102a04000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801c7185040[ 2780.319728] netlink: 3 bytes leftover after parsing attributes in process `syz-executor.3'. ffff8801cef5bdc0 1ffff1003a771e87 00000000ffffffea ffff8801d3b8f418 ffffffff81a20997 ffff8801d3b8f8f8 ffff8801c7185040 ffff8801d3b8f4c0 ffffffff81a2124e ffff8801d65e13f0 0000000000000008 Call Trace: [] sens_destroy+0x47/0x90 security/selinux/ss/policydb.c:729 [] sens_read+0x1de/0x360 security/selinux/ss/policydb.c:1630 [] policydb_read+0xdba/0x2390 security/selinux/ss/policydb.c:2367 [] security_load_policy+0x264/0x9b0 security/selinux/ss/services.c:2067 netlink: 3 bytes leftover after parsing attributes in process `syz-executor.3'. [] sel_write_load+0x19b/0xfa0 security/selinux/selinuxfs.c:522 [] __vfs_write+0x115/0x580 fs/read_write.c:507 [] vfs_write+0x187/0x520 fs/read_write.c:557 [] SYSC_write fs/read_write.c:604 [inline] [] SyS_write+0xd9/0x1c0 fs/read_write.c:596 netlink: 3 bytes leftover after parsing attributes in process `syz-executor.3'. [] do_syscall_32_irqs_on arch/x86/entry/common.c:328 [inline] [] do_fast_syscall_32+0x2f1/0xa10 arch/x86/entry/common.c:390 [] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137 Code: 89 fe 41 55 41 54 53 e8 6d 3b 90 ff 4d 85 f6 0f 84 a6 00 00 00 e8 5f 3b 90 ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 a5 00 00 00 49 8b 1e 48 85 db 74 32 49 bd 00 RIP [] ebitmap_destroy+0x32/0x100 security/selinux/ss/ebitmap.c:331 RSP ---[ end trace be068092000e4ade ]---