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: 0 PID: 8377 Comm: syz-executor.5 Not tainted 4.9.141+ #1 task: ffff88018b2097c0 task.stack: ffff8801c5810000 RIP: 0010:[] [] ebitmap_destroy+0x32/0x100 security/selinux/ss/ebitmap.c:331 RSP: 0018:ffff8801c58173e8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8801d7a75700 RCX: ffffc9000173e000 RDX: 0000000000000001 RSI: ffffffff81a17f01 RDI: 0000000000000008 RBP: ffff8801c5817408 R08: ffff88018b20a0e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88013a210000 R13: 1ffff10038b02e89 R14: 0000000000000008 R15: ffff8801c58174a8 FS: 00007f919f931700(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000d6b978 CR3: 00000001c6523000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801d7a75700 ffff88013a210000 1ffff10038b02e89 00000000ffffffea ffff8801c5817428 ffffffff81a20997 ffff8801c5817908 ffff8801d7a75700 ffff8801c58174d0 ffffffff81a2124e ffff8801c76f9b10 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 [] 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 [] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb 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 171aa81dcb25f9ec ]---