[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.75' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.144719][ T8400] divide error: 0000 [#1] PREEMPT SMP KASAN [ 71.151176][ T8400] CPU: 1 PID: 8400 Comm: syz-executor479 Not tainted 5.12.0-rc4-syzkaller #0 [ 71.160298][ T8400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.170818][ T8400] RIP: 0010:nft_limit_init+0x2a2/0x5e0 [ 71.176796][ T8400] Code: ef 4c 01 eb 41 0f 92 c7 48 89 de e8 c8 bb 20 fa 4d 85 ff 0f 85 97 02 00 00 e8 7a b5 20 fa 4c 0f af f3 45 89 ed 31 d2 4c 89 f0 <49> f7 f5 49 89 c6 e8 63 b5 20 fa 48 8d 7d 48 48 b8 00 00 00 00 00 [ 71.197699][ T8400] RSP: 0018:ffffc9000184f188 EFLAGS: 00010246 [ 71.203992][ T8400] RAX: 0000000000000000 RBX: 0000200000000000 RCX: 0000000000000000 [ 71.212768][ T8400] RDX: 0000000000000000 RSI: ffffffff875340e6 RDI: 0000000000000003 [ 71.221658][ T8400] RBP: ffff88801c4f7108 R08: 0000200000000000 R09: 0000000000000000 [ 71.230004][ T8400] R10: ffffffff875340d8 R11: 0000000000000000 R12: ffffc9000184f260 [ 71.239397][ T8400] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 71.248603][ T8400] FS: 000000000070e300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 71.258597][ T8400] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.265810][ T8400] CR2: 00000000200001c4 CR3: 0000000025e0f000 CR4: 00000000001506e0 [ 71.274340][ T8400] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.282761][ T8400] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.293436][ T8400] Call Trace: [ 71.296730][ T8400] ? nft_limit_pkts_dump+0x20/0x20 [ 71.301868][ T8400] ? rcu_read_lock_sched_held+0x3a/0x70 [ 71.307546][ T8400] ? nft_limit_obj_pkts_init+0xe0/0xe0 [ 71.313115][ T8400] nft_expr_init+0x145/0x2d0 [ 71.317746][ T8400] ? nf_tables_flowtable_notify+0x6a0/0x6a0 [ 71.323839][ T8400] ? lockdep_hardirqs_on+0x79/0x100 [ 71.329103][ T8400] ? slab_free_freelist_hook+0x92/0x210 [ 71.334676][ T8400] ? kfree+0xe5/0x7f0 [ 71.339132][ T8400] nft_set_elem_expr_alloc+0x27/0x280 [ 71.344751][ T8400] ? nft_rhash_obj+0x60/0x60 [ 71.349727][ T8400] nf_tables_newset+0x1aa8/0x3110 [ 71.354784][ T8400] ? nft_set_elem_expr_alloc+0x280/0x280 [ 71.360474][ T8400] ? lock_downgrade+0x6e0/0x6e0 [ 71.365442][ T8400] ? nft_set_elem_expr_alloc+0x280/0x280 [ 71.371380][ T8400] nfnetlink_rcv_batch+0xa09/0x24b0 [ 71.376620][ T8400] ? nfnetlink_bind+0x300/0x300 [ 71.382061][ T8400] ? nla_get_range_signed+0x520/0x520 [ 71.387449][ T8400] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.394665][ T8400] ? apparmor_capable+0x1d8/0x460 [ 71.399739][ T8400] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.406167][ T8400] ? security_capable+0x8f/0xc0 [ 71.411667][ T8400] ? __nla_parse+0x3d/0x50 [ 71.416289][ T8400] nfnetlink_rcv+0x3af/0x420 [ 71.420909][ T8400] ? nfnetlink_rcv_batch+0x24b0/0x24b0 [ 71.426395][ T8400] netlink_unicast+0x533/0x7d0 [ 71.431182][ T8400] ? netlink_attachskb+0x870/0x870 [ 71.436486][ T8400] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 71.444776][ T8400] ? __phys_addr_symbol+0x2c/0x70 [ 71.450266][ T8400] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 71.456293][ T8400] ? __check_object_size+0x171/0x3f0 [ 71.461956][ T8400] netlink_sendmsg+0x856/0xd90 [ 71.466829][ T8400] ? netlink_unicast+0x7d0/0x7d0 [ 71.471891][ T8400] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.479389][ T8400] ? netlink_unicast+0x7d0/0x7d0 [ 71.484539][ T8400] sock_sendmsg+0xcf/0x120 [ 71.489069][ T8400] ____sys_sendmsg+0x6e8/0x810 [ 71.494276][ T8400] ? kernel_sendmsg+0x50/0x50 [ 71.500056][ T8400] ? do_recvmmsg+0x6d0/0x6d0 [ 71.505051][ T8400] ? do_huge_pmd_anonymous_page+0x124b/0x2570 [ 71.511517][ T8400] ? lock_downgrade+0x6e0/0x6e0 [ 71.517147][ T8400] ___sys_sendmsg+0xf3/0x170 [ 71.522321][ T8400] ? sendmsg_copy_msghdr+0x160/0x160 [ 71.528103][ T8400] ? __lock_acquire+0x16b3/0x54c0 [ 71.533290][ T8400] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 71.539678][ T8400] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.546306][ T8400] ? __fget_light+0x215/0x280 [ 71.551184][ T8400] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 71.557720][ T8400] __sys_sendmsg+0xe5/0x1b0 [ 71.562357][ T8400] ? __sys_sendmsg_sock+0x30/0x30 [ 71.567408][ T8400] ? syscall_enter_from_user_mode+0x27/0x70 [ 71.573424][ T8400] do_syscall_64+0x2d/0x70 [ 71.577869][ T8400] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.584583][ T8400] RIP: 0033:0x43f289 [ 71.588591][ T8400] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 71.608789][ T8400] RSP: 002b:00007fff011f31c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 71.617572][ T8400] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f289 [ 71.625848][ T8400] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 71.634701][ T8400] RBP: 0000000000403270 R08: 0000000000000024 R09: 0000000000400488 [ 71.643326][ T8400] R10: 0000000000000074 R11: 0000000000000246 R12: 0000000000403300 [ 71.651970][ T8400] R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 [ 71.660264][ T8400] Modules linked in: [ 71.665500][ T8400] ---[ end trace f4b1e2e1f343d8b6 ]--- [ 71.671157][ T8400] RIP: 0010:nft_limit_init+0x2a2/0x5e0 [ 71.676766][ T8400] Code: ef 4c 01 eb 41 0f 92 c7 48 89 de e8 c8 bb 20 fa 4d 85 ff 0f 85 97 02 00 00 e8 7a b5 20 fa 4c 0f af f3 45 89 ed 31 d2 4c 89 f0 <49> f7 f5 49 89 c6 e8 63 b5 20 fa 48 8d 7d 48 48 b8 00 00 00 00 00 [ 71.698564][ T8400] RSP: 0018:ffffc9000184f188 EFLAGS: 00010246 [ 71.707081][ T8400] RAX: 0000000000000000 RBX: 0000200000000000 RCX: 0000000000000000 [ 71.718018][ T8400] RDX: 0000000000000000 RSI: ffffffff875340e6 RDI: 0000000000000003 [ 71.728848][ T8400] RBP: ffff88801c4f7108 R08: 0000200000000000 R09: 0000000000000000 [ 71.740561][ T8400] R10: ffffffff875340d8 R11: 0000000000000000 R12: ffffc9000184f260 [ 71.750957][ T8400] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 71.762629][ T8400] FS: 000000000070e300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 71.780827][ T8400] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.791081][ T8400] CR2: 00007fa2c1d216c0 CR3: 0000000025e0f000 CR4: 00000000001506f0 [ 71.803888][ T8400] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.816835][ T8400] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.828268][ T8400] Kernel panic - not syncing: Fatal exception [ 71.835578][ T8400] Kernel Offset: disabled [ 71.840702][ T8400] Rebooting in 86400 seconds..