Warning: Permanently added '10.128.0.168' (ECDSA) to the list of known hosts. executing program [ 103.090309][ T32] audit: type=1400 audit(1594051312.770:8): avc: denied { execmem } for pid=8836 comm="syz-executor153" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 103.101761][ T8836] ===================================================== [ 103.117956][ T8836] BUG: KMSAN: uninit-value in __tipc_nl_compat_dumpit+0x583/0x1290 [ 103.125870][ T8836] CPU: 0 PID: 8836 Comm: syz-executor153 Not tainted 5.7.0-rc4-syzkaller #0 [ 103.134561][ T8836] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 103.144599][ T8836] Call Trace: [ 103.147885][ T8836] dump_stack+0x1c9/0x220 [ 103.152216][ T8836] kmsan_report+0xf7/0x1e0 [ 103.156634][ T8836] __msan_warning+0x58/0xa0 [ 103.161123][ T8836] __tipc_nl_compat_dumpit+0x583/0x1290 [ 103.166694][ T8836] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 103.172492][ T8836] ? kmsan_get_metadata+0x11d/0x180 [ 103.177678][ T8836] ? kmsan_get_metadata+0x11d/0x180 [ 103.182858][ T8836] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 103.188659][ T8836] ? __alloc_skb+0x762/0xac0 [ 103.193260][ T8836] tipc_nl_compat_dumpit+0x761/0x910 [ 103.198538][ T8836] tipc_nl_compat_recv+0x1382/0x2940 [ 103.203809][ T8836] ? kmsan_get_metadata+0x4f/0x180 [ 103.208919][ T8836] ? __tipc_nl_add_sk_info+0xc80/0xc80 [ 103.214362][ T8836] ? tipc_nl_compat_name_table_dump+0xbb0/0xbb0 [ 103.220587][ T8836] ? tipc_netlink_compat_stop+0x40/0x40 [ 103.226116][ T8836] genl_rcv_msg+0x20dc/0x2480 [ 103.230819][ T8836] netlink_rcv_skb+0x451/0x650 [ 103.235570][ T8836] ? genl_unbind+0x380/0x380 [ 103.240152][ T8836] genl_rcv+0x63/0x80 [ 103.244136][ T8836] netlink_unicast+0xf9e/0x1100 [ 103.249040][ T8836] ? genl_pernet_exit+0x90/0x90 [ 103.253882][ T8836] netlink_sendmsg+0x1246/0x14d0 [ 103.258815][ T8836] ? netlink_getsockopt+0x1440/0x1440 [ 103.264231][ T8836] ____sys_sendmsg+0x12b6/0x1350 [ 103.269176][ T8836] __sys_sendmsg+0x623/0x750 [ 103.273768][ T8836] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 103.279553][ T8836] ? kmsan_get_metadata+0x11d/0x180 [ 103.284736][ T8836] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 103.290524][ T8836] ? kmsan_get_metadata+0x11d/0x180 [ 103.295713][ T8836] ? kmsan_get_metadata+0x11d/0x180 [ 103.300894][ T8836] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 103.306731][ T8836] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 103.312780][ T8836] ? prepare_exit_to_usermode+0x1ca/0x520 [ 103.318479][ T8836] ? kmsan_get_metadata+0x4f/0x180 [ 103.323574][ T8836] ? kmsan_get_metadata+0x4f/0x180 [ 103.328673][ T8836] __se_compat_sys_sendmsg+0xa7/0xc0 [ 103.333966][ T8836] __ia32_compat_sys_sendmsg+0x4a/0x70 [ 103.339413][ T8836] ? compat_mc_getsockopt+0x15a0/0x15a0 [ 103.344967][ T8836] do_fast_syscall_32+0x3bf/0x6d0 [ 103.349985][ T8836] entry_SYSENTER_compat+0x68/0x77 [ 103.355076][ T8836] RIP: 0023:0xf7f48dd9 [ 103.359126][ T8836] 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 [ 103.378816][ T8836] RSP: 002b:00000000ff9054ec EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 103.387219][ T8836] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 [ 103.395172][ T8836] RDX: 0000000000000000 RSI: 00000000080ef080 RDI: 00000000ff905540 [ 103.403123][ T8836] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 103.411074][ T8836] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 103.419025][ T8836] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 103.426990][ T8836] [ 103.429296][ T8836] Uninit was created at: [ 103.433521][ T8836] kmsan_internal_poison_shadow+0x66/0xd0 [ 103.439219][ T8836] kmsan_slab_alloc+0x8a/0xe0 [ 103.443875][ T8836] __kmalloc_node_track_caller+0xb40/0x1200 [ 103.449760][ T8836] __alloc_skb+0x2fd/0xac0 [ 103.454175][ T8836] tipc_nl_compat_dumpit+0x6e4/0x910 [ 103.459440][ T8836] tipc_nl_compat_recv+0x1382/0x2940 [ 103.464712][ T8836] genl_rcv_msg+0x20dc/0x2480 [ 103.469367][ T8836] netlink_rcv_skb+0x451/0x650 [ 103.474114][ T8836] genl_rcv+0x63/0x80 [ 103.478074][ T8836] netlink_unicast+0xf9e/0x1100 [ 103.482904][ T8836] netlink_sendmsg+0x1246/0x14d0 [ 103.487824][ T8836] ____sys_sendmsg+0x12b6/0x1350 [ 103.492740][ T8836] __sys_sendmsg+0x623/0x750 [ 103.497323][ T8836] __se_compat_sys_sendmsg+0xa7/0xc0 [ 103.502585][ T8836] __ia32_compat_sys_sendmsg+0x4a/0x70 [ 103.508053][ T8836] do_fast_syscall_32+0x3bf/0x6d0 [ 103.513056][ T8836] entry_SYSENTER_compat+0x68/0x77 [ 103.518161][ T8836] ===================================================== [ 103.525070][ T8836] Disabling lock debugging due to kernel taint [ 103.531197][ T8836] Kernel panic - not syncing: panic_on_warn set ... [ 103.537774][ T8836] CPU: 0 PID: 8836 Comm: syz-executor153 Tainted: G B 5.7.0-rc4-syzkaller #0 [ 103.547828][ T8836] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 103.557861][ T8836] Call Trace: [ 103.561154][ T8836] dump_stack+0x1c9/0x220 [ 103.565491][ T8836] panic+0x3d5/0xc3e [ 103.569426][ T8836] kmsan_report+0x1df/0x1e0 [ 103.573919][ T8836] __msan_warning+0x58/0xa0 [ 103.578424][ T8836] __tipc_nl_compat_dumpit+0x583/0x1290 [ 103.584009][ T8836] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 103.589796][ T8836] ? kmsan_get_metadata+0x11d/0x180 [ 103.594999][ T8836] ? kmsan_get_metadata+0x11d/0x180 [ 103.600195][ T8836] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 103.605987][ T8836] ? __alloc_skb+0x762/0xac0 [ 103.610577][ T8836] tipc_nl_compat_dumpit+0x761/0x910 [ 103.615858][ T8836] tipc_nl_compat_recv+0x1382/0x2940 [ 103.621149][ T8836] ? kmsan_get_metadata+0x4f/0x180 [ 103.626253][ T8836] ? __tipc_nl_add_sk_info+0xc80/0xc80 [ 103.631712][ T8836] ? tipc_nl_compat_name_table_dump+0xbb0/0xbb0 [ 103.637936][ T8836] ? tipc_netlink_compat_stop+0x40/0x40 [ 103.643464][ T8836] genl_rcv_msg+0x20dc/0x2480 [ 103.648157][ T8836] netlink_rcv_skb+0x451/0x650 [ 103.652907][ T8836] ? genl_unbind+0x380/0x380 [ 103.657491][ T8836] genl_rcv+0x63/0x80 [ 103.661471][ T8836] netlink_unicast+0xf9e/0x1100 [ 103.666309][ T8836] ? genl_pernet_exit+0x90/0x90 [ 103.671206][ T8836] netlink_sendmsg+0x1246/0x14d0 [ 103.676161][ T8836] ? netlink_getsockopt+0x1440/0x1440 [ 103.681531][ T8836] ____sys_sendmsg+0x12b6/0x1350 [ 103.686472][ T8836] __sys_sendmsg+0x623/0x750 [ 103.691085][ T8836] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 103.696870][ T8836] ? kmsan_get_metadata+0x11d/0x180 [ 103.702047][ T8836] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 103.707836][ T8836] ? kmsan_get_metadata+0x11d/0x180 [ 103.713019][ T8836] ? kmsan_get_metadata+0x11d/0x180 [ 103.718200][ T8836] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 103.724020][ T8836] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 103.730067][ T8836] ? prepare_exit_to_usermode+0x1ca/0x520 [ 103.735765][ T8836] ? kmsan_get_metadata+0x4f/0x180 [ 103.740872][ T8836] ? kmsan_get_metadata+0x4f/0x180 [ 103.745998][ T8836] __se_compat_sys_sendmsg+0xa7/0xc0 [ 103.751271][ T8836] __ia32_compat_sys_sendmsg+0x4a/0x70 [ 103.756713][ T8836] ? compat_mc_getsockopt+0x15a0/0x15a0 [ 103.762241][ T8836] do_fast_syscall_32+0x3bf/0x6d0 [ 103.767260][ T8836] entry_SYSENTER_compat+0x68/0x77 [ 103.772367][ T8836] RIP: 0023:0xf7f48dd9 [ 103.776421][ T8836] 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 [ 103.796008][ T8836] RSP: 002b:00000000ff9054ec EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 103.804402][ T8836] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 [ 103.812354][ T8836] RDX: 0000000000000000 RSI: 00000000080ef080 RDI: 00000000ff905540 [ 103.820304][ T8836] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 103.828255][ T8836] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 103.836208][ T8836] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 103.845152][ T8836] Kernel Offset: 0x25a00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 103.856767][ T8836] Rebooting in 86400 seconds..