Warning: Permanently added '10.128.0.95' (ECDSA) to the list of known hosts. executing program [ 58.201145][ T26] audit: type=1400 audit(1552330568.465:36): avc: denied { map } for pid=8214 comm="syz-executor399" path="/root/syz-executor399543489" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 58.276292][ T8215] ------------[ cut here ]------------ [ 58.281791][ T8215] Bad or missing usercopy whitelist? Kernel memory exposure attempt detected from SLAB object 'fanotify_event' (offset 40, size 8)! [ 58.295558][ T8215] WARNING: CPU: 0 PID: 8215 at mm/usercopy.c:78 usercopy_warn+0xeb/0x110 [ 58.303965][ T8215] Kernel panic - not syncing: panic_on_warn set ... [ 58.310546][ T8215] CPU: 0 PID: 8215 Comm: syz-executor399 Not tainted 5.0.0+ #17 [ 58.318170][ T8215] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.328199][ T8215] Call Trace: [ 58.331468][ T8215] dump_stack+0x172/0x1f0 [ 58.335778][ T8215] ? usercopy_warn+0xb0/0x110 [ 58.340434][ T8215] panic+0x2cb/0x65c [ 58.344310][ T8215] ? __warn_printk+0xf3/0xf3 [ 58.348882][ T8215] ? usercopy_warn+0xeb/0x110 [ 58.353555][ T8215] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.359774][ T8215] ? __warn.cold+0x5/0x45 [ 58.364089][ T8215] ? __warn+0xe8/0x1d0 [ 58.368167][ T8215] ? usercopy_warn+0xeb/0x110 [ 58.372836][ T8215] __warn.cold+0x20/0x45 [ 58.377069][ T8215] ? usercopy_warn+0xeb/0x110 [ 58.381733][ T8215] report_bug+0x263/0x2b0 [ 58.386050][ T8215] do_error_trap+0x11b/0x200 [ 58.390624][ T8215] do_invalid_op+0x37/0x50 [ 58.395017][ T8215] ? usercopy_warn+0xeb/0x110 [ 58.399675][ T8215] invalid_op+0x14/0x20 [ 58.403836][ T8215] RIP: 0010:usercopy_warn+0xeb/0x110 [ 58.409109][ T8215] Code: c8 e8 d9 88 c0 ff 4c 8b 45 c0 4d 89 e9 4c 89 e1 48 8b 55 c8 41 57 48 89 de 48 c7 c7 e0 dc 74 87 ff 75 d0 41 56 e8 03 4b 93 ff <0f> 0b 48 83 c4 18 e9 46 ff ff ff 49 c7 c5 e0 da 74 87 4d 89 ee 4d [ 58.428691][ T8215] RSP: 0018:ffff88809615fb18 EFLAGS: 00010282 [ 58.434742][ T8215] RAX: 0000000000000000 RBX: ffffffff8774dca0 RCX: 0000000000000000 [ 58.442688][ T8215] RDX: 0000000000000000 RSI: ffffffff815ad7b6 RDI: ffffed1012c2bf55 [ 58.450635][ T8215] RBP: ffff88809615fb70 R08: ffff888093f4a200 R09: 0000000000000000 [ 58.458581][ T8215] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8859408d [ 58.466530][ T8215] R13: ffffffff8775d500 R14: ffffffff8774db20 R15: 0000000000000008 [ 58.474509][ T8215] ? vprintk_func+0x86/0x189 [ 58.479092][ T8215] ? usercopy_warn+0xeb/0x110 [ 58.483756][ T8215] __check_heap_object+0x88/0xb3 [ 58.488672][ T8215] __check_object_size+0x342/0x42f [ 58.493758][ T8215] fanotify_read+0xde0/0x1430 [ 58.498414][ T8215] ? fanotify_release+0x350/0x350 [ 58.503412][ T8215] ? fsnotify+0xbc0/0xbc0 [ 58.507719][ T8215] ? fsnotify_first_mark+0x210/0x210 [ 58.512979][ T8215] ? do_wait_intr_irq+0x2b0/0x2b0 [ 58.517983][ T8215] ? selinux_file_permission+0x9b/0x570 [ 58.523546][ T8215] ? security_file_permission+0x94/0x380 [ 58.529157][ T8215] __vfs_read+0x8d/0x110 [ 58.533372][ T8215] ? fanotify_release+0x350/0x350 [ 58.538373][ T8215] vfs_read+0x194/0x3e0 [ 58.542507][ T8215] ksys_read+0xea/0x1f0 [ 58.546642][ T8215] ? kernel_write+0x120/0x120 [ 58.551297][ T8215] ? do_syscall_64+0x26/0x610 [ 58.555952][ T8215] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.561992][ T8215] ? do_syscall_64+0x26/0x610 [ 58.566646][ T8215] __x64_sys_read+0x73/0xb0 [ 58.571127][ T8215] do_syscall_64+0x103/0x610 [ 58.575694][ T8215] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.581560][ T8215] RIP: 0033:0x4456b9 [ 58.585653][ T8215] Code: e8 6c b6 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 58.605231][ T8215] RSP: 002b:00007fa08c132db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 58.613614][ T8215] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 00000000004456b9 [ 58.621559][ T8215] RDX: 000000000000006b RSI: 0000000020000000 RDI: 0000000000000004 [ 58.629504][ T8215] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 58.637449][ T8215] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c [ 58.645396][ T8215] R13: 00007fffa84a8acf R14: 00007fa08c1339c0 R15: 20c49ba5e353f7cf [ 58.654121][ T8215] Kernel Offset: disabled [ 58.658491][ T8215] Rebooting in 86400 seconds..