dhcpcd-9.4.0 starting dev: loaded udev DUID 00:04:ad:e7:79:3b:b7:f5:62:73:6c:f2:e2:29:12:8f:ec:36 forked to background, child pid 2385 Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.98' (ECDSA) to the list of known hosts. 2023/03/27 07:16:25 fuzzer started syzkaller login: [ 29.405143][ T2456] ------------[ cut here ]------------ [ 29.406108][ T2456] WARNING: CPU: 1 PID: 2456 at include/linux/cpumask.h:143 c_start+0x1da/0x250 [ 29.407382][ T2456] Modules linked in: [ 29.407984][ T2456] CPU: 1 PID: 2456 Comm: syz-fuzzer Not tainted 6.3.0-rc1-syzkaller-00083-g2b947f8769be #0 [ 29.409392][ T2456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 29.411119][ T2456] RIP: 0010:c_start+0x1da/0x250 [ 29.411906][ T2456] Code: 58 55 87 e8 18 09 3e 00 4c 89 e0 5b 5d 41 5c 41 5d 41 5e c3 f3 48 0f bc db e8 02 09 3e 00 89 db e9 38 ff ff ff e8 f6 08 3e 00 <0f> 0b e9 c1 fe ff ff 48 c7 c7 c0 bc e1 88 e8 b3 9e 72 00 e9 67 ff [ 29.414518][ T2456] RSP: 0018:ffffc90001467c68 EFLAGS: 00010293 [ 29.415366][ T2456] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000000000 [ 29.416441][ T2456] RDX: ffff88811be08000 RSI: ffffffff810cf5aa RDI: 0000000000000004 [ 29.417517][ T2456] RBP: ffffffff88e1bcc0 R08: 0000000000000004 R09: 0000000000000007 [ 29.418613][ T2456] R10: 0000000000000002 R11: 0000000000000000 R12: ffff88810c34a4c8 [ 29.419699][ T2456] R13: 0000000000000008 R14: 0000000000000002 R15: 0000000000000000 [ 29.420808][ T2456] FS: 000000c000bb8090(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 [ 29.422163][ T2456] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.423130][ T2456] CR2: 000000c000bc8000 CR3: 0000000111028000 CR4: 00000000003506e0 [ 29.424206][ T2456] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.425282][ T2456] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.426380][ T2456] Call Trace: [ 29.429649][ T2456] [ 29.432638][ T2456] seq_read_iter+0x2ca/0x12d0 [ 29.437325][ T2456] proc_reg_read_iter+0x115/0x2d0 [ 29.442388][ T2456] vfs_read+0x681/0x930 [ 29.446543][ T2456] ? kernel_read+0x1c0/0x1c0 [ 29.451194][ T2456] ? __fget_files+0x26a/0x480 [ 29.455894][ T2456] ksys_read+0x12b/0x250 [ 29.460143][ T2456] ? vfs_write+0xe10/0xe10 [ 29.464613][ T2456] ? syscall_enter_from_user_mode+0x26/0xb0 [ 29.470542][ T2456] do_syscall_64+0x39/0xb0 [ 29.475035][ T2456] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 29.480967][ T2456] RIP: 0033:0x403ace [ 29.484909][ T2456] Code: 48 89 6c 24 38 48 8d 6c 24 38 e8 0d 00 00 00 48 8b 6c 24 38 48 83 c4 40 c3 cc cc cc 49 89 f2 48 89 fa 48 89 ce 48 89 df 0f 05 <48> 3d 01 f0 ff ff 76 15 48 f7 d8 48 89 c1 48 c7 c0 ff ff ff ff 48 [ 29.504586][ T2456] RSP: 002b:000000c000bad308 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 29.513041][ T2456] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000403ace [ 29.521011][ T2456] RDX: 0000000000001000 RSI: 000000c000bc2000 RDI: 0000000000000003 [ 29.529023][ T2456] RBP: 000000c000bad348 R08: 0000000000000000 R09: 0000000000000000 [ 29.537039][ T2456] R10: 0000000000000000 R11: 0000000000000202 R12: 000000c000bad488 [ 29.545102][ T2456] R13: 0000000000000000 R14: 000000c0000061a0 R15: 0000000000000010 [ 29.553144][ T2456] [ 29.556178][ T2456] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 29.563530][ T2456] CPU: 1 PID: 2456 Comm: syz-fuzzer Not tainted 6.3.0-rc1-syzkaller-00083-g2b947f8769be #0 [ 29.573515][ T2456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 29.583563][ T2456] Call Trace: [ 29.586832][ T2456] [ 29.589753][ T2456] dump_stack_lvl+0xd9/0x150 [ 29.594354][ T2456] panic+0x688/0x730 [ 29.598246][ T2456] ? panic_smp_self_stop+0x90/0x90 [ 29.603349][ T2456] ? show_trace_log_lvl+0x285/0x390 [ 29.608551][ T2456] ? c_start+0x1da/0x250 [ 29.612796][ T2456] check_panic_on_warn+0xb1/0xc0 [ 29.617730][ T2456] __warn+0xf2/0x4f0 [ 29.621616][ T2456] ? c_start+0x1da/0x250 [ 29.625861][ T2456] report_bug+0x2da/0x500 [ 29.630197][ T2456] handle_bug+0x3c/0x70 [ 29.634374][ T2456] exc_invalid_op+0x18/0x50 [ 29.638873][ T2456] asm_exc_invalid_op+0x1a/0x20 [ 29.643722][ T2456] RIP: 0010:c_start+0x1da/0x250 [ 29.648580][ T2456] Code: 58 55 87 e8 18 09 3e 00 4c 89 e0 5b 5d 41 5c 41 5d 41 5e c3 f3 48 0f bc db e8 02 09 3e 00 89 db e9 38 ff ff ff e8 f6 08 3e 00 <0f> 0b e9 c1 fe ff ff 48 c7 c7 c0 bc e1 88 e8 b3 9e 72 00 e9 67 ff [ 29.668182][ T2456] RSP: 0018:ffffc90001467c68 EFLAGS: 00010293 [ 29.674242][ T2456] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000000000 [ 29.682203][ T2456] RDX: ffff88811be08000 RSI: ffffffff810cf5aa RDI: 0000000000000004 [ 29.690197][ T2456] RBP: ffffffff88e1bcc0 R08: 0000000000000004 R09: 0000000000000007 [ 29.698164][ T2456] R10: 0000000000000002 R11: 0000000000000000 R12: ffff88810c34a4c8 [ 29.706124][ T2456] R13: 0000000000000008 R14: 0000000000000002 R15: 0000000000000000 [ 29.714097][ T2456] ? c_start+0x1da/0x250 [ 29.718342][ T2456] ? c_start+0x1da/0x250 [ 29.722580][ T2456] seq_read_iter+0x2ca/0x12d0 [ 29.727345][ T2456] proc_reg_read_iter+0x115/0x2d0 [ 29.732363][ T2456] vfs_read+0x681/0x930 [ 29.736509][ T2456] ? kernel_read+0x1c0/0x1c0 [ 29.741093][ T2456] ? __fget_files+0x26a/0x480 [ 29.745761][ T2456] ksys_read+0x12b/0x250 [ 29.749996][ T2456] ? vfs_write+0xe10/0xe10 [ 29.754408][ T2456] ? syscall_enter_from_user_mode+0x26/0xb0 [ 29.760299][ T2456] do_syscall_64+0x39/0xb0 [ 29.764711][ T2456] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 29.770600][ T2456] RIP: 0033:0x403ace [ 29.774483][ T2456] Code: 48 89 6c 24 38 48 8d 6c 24 38 e8 0d 00 00 00 48 8b 6c 24 38 48 83 c4 40 c3 cc cc cc 49 89 f2 48 89 fa 48 89 ce 48 89 df 0f 05 <48> 3d 01 f0 ff ff 76 15 48 f7 d8 48 89 c1 48 c7 c0 ff ff ff ff 48 [ 29.794083][ T2456] RSP: 002b:000000c000bad308 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 29.802497][ T2456] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000403ace [ 29.810461][ T2456] RDX: 0000000000001000 RSI: 000000c000bc2000 RDI: 0000000000000003 [ 29.818430][ T2456] RBP: 000000c000bad348 R08: 0000000000000000 R09: 0000000000000000 [ 29.826395][ T2456] R10: 0000000000000000 R11: 0000000000000202 R12: 000000c000bad488 [ 29.834359][ T2456] R13: 0000000000000000 R14: 000000c0000061a0 R15: 0000000000000010 [ 29.842323][ T2456] [ 29.845401][ T2456] Kernel Offset: disabled [ 29.849786][ T2456] Rebooting in 86400 seconds..