Warning: Permanently added '10.128.0.17' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 94.121334][ T32] audit: type=1400 audit(1587279615.116:8): avc: denied { execmem } for pid=8854 comm="syz-executor694" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 94.132599][ T8854] ===================================================== [ 94.158614][ T8854] BUG: KMSAN: uninit-value in string+0x522/0x690 [ 94.166349][ T8854] CPU: 1 PID: 8854 Comm: syz-executor694 Not tainted 5.6.0-rc7-syzkaller #0 [ 94.175994][ T8854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 94.187123][ T8854] Call Trace: [ 94.191151][ T8854] dump_stack+0x1c9/0x220 [ 94.197594][ T8854] kmsan_report+0xf7/0x1e0 [ 94.202795][ T8854] __msan_warning+0x58/0xa0 [ 94.207647][ T8854] string+0x522/0x690 [ 94.212036][ T8854] vsnprintf+0x207d/0x31b0 [ 94.217605][ T8854] audit_log_vformat+0x583/0xcd0 [ 94.223434][ T8854] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 94.230043][ T8854] audit_log_format+0x220/0x260 [ 94.236969][ T8854] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 94.246318][ T8854] audit_receive+0x18a4/0x6d50 [ 94.252254][ T8854] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 94.258939][ T8854] ? netlink_deliver_tap+0xc7/0xea0 [ 94.264303][ T8854] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 94.270858][ T8854] ? kmsan_get_metadata+0x11d/0x180 [ 94.276256][ T8854] netlink_unicast+0xf9e/0x1100 [ 94.282441][ T8854] ? audit_net_exit+0xd0/0xd0 [ 94.287450][ T8854] netlink_sendmsg+0x1246/0x14d0 [ 94.293116][ T8854] ? netlink_getsockopt+0x1440/0x1440 [ 94.298926][ T8854] ____sys_sendmsg+0x12b6/0x1350 [ 94.304250][ T8854] __sys_sendmsg+0x451/0x5f0 [ 94.309167][ T8854] ? up_read+0x40/0x2b0 [ 94.314121][ T8854] ? kmsan_get_metadata+0x11d/0x180 [ 94.319854][ T8854] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 94.326093][ T8854] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 94.334133][ T8854] ? do_user_addr_fault+0xe77/0x1520 [ 94.341525][ T8854] ? kmsan_get_metadata+0x4f/0x180 [ 94.348542][ T8854] ? kmsan_get_metadata+0x4f/0x180 [ 94.355289][ T8854] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 94.363377][ T8854] __ia32_compat_sys_sendmsg+0xed/0x130 [ 94.369314][ T8854] ? compat_mc_getsockopt+0x19a0/0x19a0 [ 94.375729][ T8854] do_fast_syscall_32+0x3c7/0x6e0 [ 94.381516][ T8854] entry_SYSENTER_compat+0x68/0x77 [ 94.387733][ T8854] RIP: 0023:0xf7fa0d99 [ 94.394904][ T8854] Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 94.417303][ T8854] RSP: 002b:00000000ffb27c7c EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 94.426809][ T8854] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200002c0 [ 94.436437][ T8854] RDX: 0000000000000000 RSI: 00000000080ea078 RDI: 00000000ffb27cd0 [ 94.447363][ T8854] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 94.456249][ T8854] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 94.465893][ T8854] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 94.475951][ T8854] [ 94.478888][ T8854] Uninit was created at: [ 94.484913][ T8854] kmsan_internal_poison_shadow+0x66/0xd0 [ 94.491845][ T8854] kmsan_slab_alloc+0x8a/0xe0 [ 94.496934][ T8854] __kmalloc_node_track_caller+0xb40/0x1200 [ 94.503553][ T8854] __alloc_skb+0x2fd/0xac0 [ 94.508722][ T8854] netlink_sendmsg+0x7d3/0x14d0 [ 94.514083][ T8854] ____sys_sendmsg+0x12b6/0x1350 [ 94.520174][ T8854] __sys_sendmsg+0x451/0x5f0 [ 94.524856][ T8854] __ia32_compat_sys_sendmsg+0xed/0x130 [ 94.530939][ T8854] do_fast_syscall_32+0x3c7/0x6e0 [ 94.537147][ T8854] entry_SYSENTER_compat+0x68/0x77 [ 94.543117][ T8854] ===================================================== [ 94.550742][ T8854] Disabling lock debugging due to kernel taint [ 94.557401][ T8854] Kernel panic - not syncing: panic_on_warn set ... [ 94.564680][ T8854] CPU: 1 PID: 8854 Comm: syz-executor694 Tainted: G B 5.6.0-rc7-syzkaller #0 [ 94.575401][ T8854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 94.587245][ T8854] Call Trace: [ 94.590766][ T8854] dump_stack+0x1c9/0x220 [ 94.595286][ T8854] panic+0x3d5/0xc3e [ 94.599625][ T8854] kmsan_report+0x1df/0x1e0 [ 94.604434][ T8854] __msan_warning+0x58/0xa0 [ 94.609211][ T8854] string+0x522/0x690 [ 94.613413][ T8854] vsnprintf+0x207d/0x31b0 [ 94.617846][ T8854] audit_log_vformat+0x583/0xcd0 [ 94.623642][ T8854] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 94.629667][ T8854] audit_log_format+0x220/0x260 [ 94.634581][ T8854] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 94.640756][ T8854] audit_receive+0x18a4/0x6d50 [ 94.645867][ T8854] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 94.652072][ T8854] ? netlink_deliver_tap+0xc7/0xea0 [ 94.657295][ T8854] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 94.663477][ T8854] ? kmsan_get_metadata+0x11d/0x180 [ 94.668694][ T8854] netlink_unicast+0xf9e/0x1100 [ 94.673541][ T8854] ? audit_net_exit+0xd0/0xd0 [ 94.678212][ T8854] netlink_sendmsg+0x1246/0x14d0 [ 94.683148][ T8854] ? netlink_getsockopt+0x1440/0x1440 [ 94.688513][ T8854] ____sys_sendmsg+0x12b6/0x1350 [ 94.693490][ T8854] __sys_sendmsg+0x451/0x5f0 [ 94.698074][ T8854] ? up_read+0x40/0x2b0 [ 94.702215][ T8854] ? kmsan_get_metadata+0x11d/0x180 [ 94.707482][ T8854] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 94.713268][ T8854] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 94.719330][ T8854] ? do_user_addr_fault+0xe77/0x1520 [ 94.724597][ T8854] ? kmsan_get_metadata+0x4f/0x180 [ 94.729776][ T8854] ? kmsan_get_metadata+0x4f/0x180 [ 94.735262][ T8854] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 94.741070][ T8854] __ia32_compat_sys_sendmsg+0xed/0x130 [ 94.746608][ T8854] ? compat_mc_getsockopt+0x19a0/0x19a0 [ 94.752138][ T8854] do_fast_syscall_32+0x3c7/0x6e0 [ 94.758543][ T8854] entry_SYSENTER_compat+0x68/0x77 [ 94.764357][ T8854] RIP: 0023:0xf7fa0d99 [ 94.768532][ T8854] Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 94.788164][ T8854] RSP: 002b:00000000ffb27c7c EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 94.796581][ T8854] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200002c0 [ 94.804535][ T8854] RDX: 0000000000000000 RSI: 00000000080ea078 RDI: 00000000ffb27cd0 [ 94.812502][ T8854] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 94.820467][ T8854] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 94.828446][ T8854] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 94.838766][ T8854] Kernel Offset: 0x2ae00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 94.850713][ T8854] Rebooting in 86400 seconds..