[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.84' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 65.305338][ T8509] BUG: unable to handle page fault for address: fffff52006828a39 [ 65.313224][ T8509] #PF: supervisor read access in kernel mode [ 65.319175][ T8509] #PF: error_code(0x0000) - not-present page [ 65.325124][ T8509] PGD 23fff2067 P4D 23fff2067 PUD 101a4067 PMD 3543d067 PTE 0 [ 65.332568][ T8509] Oops: 0000 [#1] PREEMPT SMP KASAN [ 65.337742][ T8509] CPU: 1 PID: 8509 Comm: syz-executor183 Not tainted 5.10.0-rc6-syzkaller #0 [ 65.346472][ T8509] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.356524][ T8509] RIP: 0010:pcpu_freelist_populate+0x1a5/0x260 [ 65.362651][ T8509] Code: 85 8f 00 00 00 48 8b 04 24 48 03 2c c5 c0 26 e4 8a 48 89 e8 48 c1 e8 03 42 80 3c 30 00 75 6b 48 89 da 48 8b 45 00 48 c1 ea 03 <42> 80 3c 32 00 75 45 48 89 03 44 89 ee 44 89 e7 48 89 5d 00 48 03 [ 65.382318][ T8509] RSP: 0018:ffffc900018bfc30 EFLAGS: 00010a06 [ 65.388359][ T8509] RAX: ffffc90033f3b368 RBX: ffffc900341451c8 RCX: ffffffff8184aef7 [ 65.396305][ T8509] RDX: 1ffff92006828a39 RSI: ffffffff8184af04 RDI: 0000000000000005 [ 65.404251][ T8509] RBP: ffffe8ffffc33a40 R08: 0000000000000000 R09: 0000000000000000 [ 65.412214][ T8509] R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000013b [ 65.420165][ T8509] R13: 0000000000004003 R14: dffffc0000000000 R15: ffff8880226d21c0 [ 65.428116][ T8509] FS: 0000000001909880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 65.437039][ T8509] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.443599][ T8509] CR2: fffff52006828a39 CR3: 000000001481c000 CR4: 00000000001506e0 [ 65.451546][ T8509] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.459491][ T8509] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.467449][ T8509] Call Trace: [ 65.470728][ T8509] htab_map_alloc+0x981/0x1230 [ 65.475490][ T8509] ? htab_map_alloc_check+0x2ee/0x430 [ 65.480844][ T8509] ? htab_percpu_map_seq_show_elem+0x4a0/0x4a0 [ 65.487073][ T8509] __do_sys_bpf+0xa81/0x5170 [ 65.491657][ T8509] ? bpf_link_get_from_fd+0x110/0x110 [ 65.497021][ T8509] ? __up_read+0x1a1/0x7b0 [ 65.501413][ T8509] ? _down_write_nest_lock+0x150/0x150 [ 65.506860][ T8509] ? syscall_enter_from_user_mode+0x1d/0x50 [ 65.512731][ T8509] do_syscall_64+0x2d/0x70 [ 65.517125][ T8509] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 65.522989][ T8509] RIP: 0033:0x4412e9 [ 65.526859][ T8509] Code: e8 fc ab 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 1b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 65.546493][ T8509] RSP: 002b:00007ffc732c46b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 65.554880][ T8509] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412e9 [ 65.562829][ T8509] RDX: 0000000000000040 RSI: 00000000200002c0 RDI: 0000000000000000 [ 65.570777][ T8509] RBP: 00000000006cb018 R08: 0000000000000004 R09: 00000000004002c8 [ 65.578723][ T8509] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402090 [ 65.586668][ T8509] R13: 0000000000402120 R14: 0000000000000000 R15: 0000000000000000 [ 65.594613][ T8509] Modules linked in: [ 65.598483][ T8509] CR2: fffff52006828a39 [ 65.602618][ T8509] ---[ end trace 7a2e43179b5c286b ]--- [ 65.608055][ T8509] RIP: 0010:pcpu_freelist_populate+0x1a5/0x260 [ 65.614185][ T8509] Code: 85 8f 00 00 00 48 8b 04 24 48 03 2c c5 c0 26 e4 8a 48 89 e8 48 c1 e8 03 42 80 3c 30 00 75 6b 48 89 da 48 8b 45 00 48 c1 ea 03 <42> 80 3c 32 00 75 45 48 89 03 44 89 ee 44 89 e7 48 89 5d 00 48 03 [ 65.633768][ T8509] RSP: 0018:ffffc900018bfc30 EFLAGS: 00010a06 [ 65.639826][ T8509] RAX: ffffc90033f3b368 RBX: ffffc900341451c8 RCX: ffffffff8184aef7 [ 65.647772][ T8509] RDX: 1ffff92006828a39 RSI: ffffffff8184af04 RDI: 0000000000000005 [ 65.655717][ T8509] RBP: ffffe8ffffc33a40 R08: 0000000000000000 R09: 0000000000000000 [ 65.663662][ T8509] R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000013b [ 65.671608][ T8509] R13: 0000000000004003 R14: dffffc0000000000 R15: ffff8880226d21c0 [ 65.679561][ T8509] FS: 0000000001909880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 65.688490][ T8509] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.695050][ T8509] CR2: fffff52006828a39 CR3: 000000001481c000 CR4: 00000000001506e0 [ 65.703006][ T8509] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.711921][ T8509] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.719959][ T8509] Kernel panic - not syncing: Fatal exception [ 65.726665][ T8509] Kernel Offset: disabled [ 65.730972][ T8509] Rebooting in 86400 seconds..