dhcpcd-9.4.0 starting dev: loaded udev DUID 00:04:28:fc:25:ea:d7:72:11:85:ec:f5:a4:60:37:c9:76:43 forked to background, child pid 2386 Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.173' (ECDSA) to the list of known hosts. 2023/03/27 07:43:27 fuzzer started syzkaller login: [ 30.389863][ T2451] ------------[ cut here ]------------ [ 30.395455][ T2451] WARNING: CPU: 0 PID: 2451 at include/linux/cpumask.h:143 c_start+0x1da/0x250 [ 30.404560][ T2451] Modules linked in: [ 30.408485][ T2451] CPU: 0 PID: 2451 Comm: syz-fuzzer Not tainted 6.3.0-rc1-syzkaller-00083-g2b947f8769be #0 [ 30.418506][ T2451] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 30.428644][ T2451] RIP: 0010:c_start+0x1da/0x250 [ 30.433570][ T2451] 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 [ 30.453364][ T2451] RSP: 0018:ffffc900005f7c68 EFLAGS: 00010293 [ 30.459520][ T2451] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000000000 [ 30.467584][ T2451] RDX: ffff88811ece5400 RSI: ffffffff810cf5aa RDI: 0000000000000004 [ 30.475714][ T2451] RBP: ffffffff88e1bcc0 R08: 0000000000000004 R09: 0000000000000007 [ 30.483793][ T2451] R10: 0000000000000002 R11: 0000000000000000 R12: ffff88810c0fb4c8 [ 30.491889][ T2451] R13: 0000000000000008 R14: 0000000000000002 R15: 0000000000000000 [ 30.500049][ T2451] FS: 0000000001ec6270(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 [ 30.509604][ T2451] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.516247][ T2451] CR2: 000000c000c61000 CR3: 000000010f79b000 CR4: 00000000003506f0 [ 30.524341][ T2451] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.532351][ T2451] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.540974][ T2451] Call Trace: [ 30.544382][ T2451] [ 30.547335][ T2451] seq_read_iter+0x2ca/0x12d0 [ 30.552038][ T2451] proc_reg_read_iter+0x115/0x2d0 [ 30.557142][ T2451] vfs_read+0x681/0x930 [ 30.561335][ T2451] ? kernel_read+0x1c0/0x1c0 [ 30.566086][ T2451] ? __fget_files+0x26a/0x480 [ 30.570785][ T2451] ksys_read+0x12b/0x250 [ 30.575082][ T2451] ? vfs_write+0xe10/0xe10 [ 30.579626][ T2451] ? syscall_enter_from_user_mode+0x26/0xb0 [ 30.585793][ T2451] do_syscall_64+0x39/0xb0 [ 30.590689][ T2451] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 30.596777][ T2451] RIP: 0033:0x403ace [ 30.600840][ T2451] 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 [ 30.620896][ T2451] RSP: 002b:000000c000b7d308 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 30.629690][ T2451] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000403ace [ 30.637777][ T2451] RDX: 0000000000001000 RSI: 000000c000388000 RDI: 0000000000000003 [ 30.645901][ T2451] RBP: 000000c000b7d348 R08: 0000000000000000 R09: 0000000000000000 [ 30.653894][ T2451] R10: 0000000000000000 R11: 0000000000000202 R12: 000000c000b7d488 [ 30.661986][ T2451] R13: 0000000000000000 R14: 000000c0000061a0 R15: 0000000000400000 [ 30.670040][ T2451] [ 30.673057][ T2451] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 30.680324][ T2451] CPU: 0 PID: 2451 Comm: syz-fuzzer Not tainted 6.3.0-rc1-syzkaller-00083-g2b947f8769be #0 [ 30.690292][ T2451] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 30.700613][ T2451] Call Trace: [ 30.703996][ T2451] [ 30.706997][ T2451] dump_stack_lvl+0xd9/0x150 [ 30.711603][ T2451] panic+0x688/0x730 [ 30.715501][ T2451] ? panic_smp_self_stop+0x90/0x90 [ 30.720610][ T2451] ? show_trace_log_lvl+0x285/0x390 [ 30.726197][ T2451] ? c_start+0x1da/0x250 [ 30.730492][ T2451] check_panic_on_warn+0xb1/0xc0 [ 30.735640][ T2451] __warn+0xf2/0x4f0 [ 30.739537][ T2451] ? c_start+0x1da/0x250 [ 30.743869][ T2451] report_bug+0x2da/0x500 [ 30.748286][ T2451] handle_bug+0x3c/0x70 [ 30.752440][ T2451] exc_invalid_op+0x18/0x50 [ 30.756938][ T2451] asm_exc_invalid_op+0x1a/0x20 [ 30.761792][ T2451] RIP: 0010:c_start+0x1da/0x250 [ 30.766654][ T2451] 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 [ 30.786279][ T2451] RSP: 0018:ffffc900005f7c68 EFLAGS: 00010293 [ 30.792373][ T2451] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000000000 [ 30.800389][ T2451] RDX: ffff88811ece5400 RSI: ffffffff810cf5aa RDI: 0000000000000004 [ 30.808817][ T2451] RBP: ffffffff88e1bcc0 R08: 0000000000000004 R09: 0000000000000007 [ 30.816935][ T2451] R10: 0000000000000002 R11: 0000000000000000 R12: ffff88810c0fb4c8 [ 30.825088][ T2451] R13: 0000000000000008 R14: 0000000000000002 R15: 0000000000000000 [ 30.833105][ T2451] ? c_start+0x1da/0x250 [ 30.837374][ T2451] ? c_start+0x1da/0x250 [ 30.841640][ T2451] seq_read_iter+0x2ca/0x12d0 [ 30.846340][ T2451] proc_reg_read_iter+0x115/0x2d0 [ 30.851414][ T2451] vfs_read+0x681/0x930 [ 30.855694][ T2451] ? kernel_read+0x1c0/0x1c0 [ 30.860282][ T2451] ? __fget_files+0x26a/0x480 [ 30.864954][ T2451] ksys_read+0x12b/0x250 [ 30.869190][ T2451] ? vfs_write+0xe10/0xe10 [ 30.873607][ T2451] ? syscall_enter_from_user_mode+0x26/0xb0 [ 30.879503][ T2451] do_syscall_64+0x39/0xb0 [ 30.883922][ T2451] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 30.889834][ T2451] RIP: 0033:0x403ace [ 30.893728][ T2451] 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 [ 30.913681][ T2451] RSP: 002b:000000c000b7d308 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 30.922090][ T2451] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000403ace [ 30.930163][ T2451] RDX: 0000000000001000 RSI: 000000c000388000 RDI: 0000000000000003 [ 30.938134][ T2451] RBP: 000000c000b7d348 R08: 0000000000000000 R09: 0000000000000000 [ 30.946126][ T2451] R10: 0000000000000000 R11: 0000000000000202 R12: 000000c000b7d488 [ 30.954296][ T2451] R13: 0000000000000000 R14: 000000c0000061a0 R15: 0000000000400000 [ 30.962272][ T2451] [ 30.965526][ T2451] Kernel Offset: disabled [ 30.969930][ T2451] Rebooting in 86400 seconds..