dhcpcd-9.4.0 starting dev: loaded udev DUID 00:04:38:86:54:de:e3:84:6f:42:f0:0e:4e:a9:8b:37:24:d9 forked to background, child pid 2385 Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.40' (ECDSA) to the list of known hosts. 2023/03/27 05:24:51 fuzzer started syzkaller login: [ 34.173755][ T2456] ------------[ cut here ]------------ [ 34.179298][ T2456] WARNING: CPU: 1 PID: 2456 at include/linux/cpumask.h:143 c_start+0x1da/0x250 [ 34.188455][ T2456] Modules linked in: [ 34.192403][ T2456] CPU: 1 PID: 2456 Comm: syz-fuzzer Not tainted 6.3.0-rc1-syzkaller-00083-g2b947f8769be #0 [ 34.202403][ T2456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 34.212490][ T2456] RIP: 0010:c_start+0x1da/0x250 [ 34.217372][ 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 [ 34.237039][ T2456] RSP: 0018:ffffc900005c7c68 EFLAGS: 00010293 [ 34.243148][ T2456] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000000000 [ 34.251150][ T2456] RDX: ffff888111a81c00 RSI: ffffffff810cf5aa RDI: 0000000000000004 [ 34.259131][ T2456] RBP: ffffffff88e1bcc0 R08: 0000000000000004 R09: 0000000000000007 [ 34.267146][ T2456] R10: 0000000000000002 R11: 0000000000000000 R12: ffff888111f9dbb8 [ 34.275152][ T2456] R13: 0000000000000008 R14: 0000000000000002 R15: 0000000000000000 [ 34.283157][ T2456] FS: 000000c0001d1c90(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 [ 34.292161][ T2456] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.298740][ T2456] CR2: 0000000000d9de43 CR3: 0000000109985000 CR4: 00000000003506e0 [ 34.306752][ T2456] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.314774][ T2456] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.322793][ T2456] Call Trace: [ 34.326078][ T2456] [ 34.329001][ T2456] seq_read_iter+0x2ca/0x12d0 [ 34.333727][ T2456] proc_reg_read_iter+0x115/0x2d0 [ 34.338777][ T2456] vfs_read+0x681/0x930 [ 34.342973][ T2456] ? kernel_read+0x1c0/0x1c0 [ 34.347578][ T2456] ? __mutex_unlock_slowpath+0x157/0x5e0 [ 34.353254][ T2456] ? __fget_files+0x26a/0x480 [ 34.357945][ T2456] ksys_read+0x12b/0x250 [ 34.362224][ T2456] ? vfs_write+0xe10/0xe10 [ 34.366658][ T2456] ? syscall_enter_from_user_mode+0x26/0xb0 [ 34.372592][ T2456] do_syscall_64+0x39/0xb0 [ 34.377025][ T2456] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 34.382964][ T2456] RIP: 0033:0x403ace [ 34.386868][ 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 [ 34.406527][ T2456] RSP: 002b:000000c0004a3308 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 34.414980][ T2456] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000403ace [ 34.422990][ T2456] RDX: 0000000000001000 RSI: 000000c000340000 RDI: 0000000000000003 [ 34.431010][ T2456] RBP: 000000c0004a3348 R08: 0000000000000000 R09: 0000000000000000 [ 34.438975][ T2456] R10: 0000000000000000 R11: 0000000000000202 R12: 000000c0004a3488 [ 34.446987][ T2456] R13: 0000000000000000 R14: 000000c0000061a0 R15: 0000000000000001 [ 34.454994][ T2456] [ 34.458005][ T2456] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 34.465269][ T2456] CPU: 1 PID: 2456 Comm: syz-fuzzer Not tainted 6.3.0-rc1-syzkaller-00083-g2b947f8769be #0 [ 34.475231][ T2456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 34.485270][ T2456] Call Trace: [ 34.488534][ T2456] [ 34.491453][ T2456] dump_stack_lvl+0xd9/0x150 [ 34.496037][ T2456] panic+0x688/0x730 [ 34.499921][ T2456] ? panic_smp_self_stop+0x90/0x90 [ 34.505022][ T2456] ? show_trace_log_lvl+0x285/0x390 [ 34.510216][ T2456] ? c_start+0x1da/0x250 [ 34.514450][ T2456] check_panic_on_warn+0xb1/0xc0 [ 34.519377][ T2456] __warn+0xf2/0x4f0 [ 34.523261][ T2456] ? c_start+0x1da/0x250 [ 34.527497][ T2456] report_bug+0x2da/0x500 [ 34.531820][ T2456] handle_bug+0x3c/0x70 [ 34.535978][ T2456] exc_invalid_op+0x18/0x50 [ 34.540472][ T2456] asm_exc_invalid_op+0x1a/0x20 [ 34.545323][ T2456] RIP: 0010:c_start+0x1da/0x250 [ 34.550170][ 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 [ 34.569766][ T2456] RSP: 0018:ffffc900005c7c68 EFLAGS: 00010293 [ 34.575833][ T2456] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000000000 [ 34.583819][ T2456] RDX: ffff888111a81c00 RSI: ffffffff810cf5aa RDI: 0000000000000004 [ 34.591779][ T2456] RBP: ffffffff88e1bcc0 R08: 0000000000000004 R09: 0000000000000007 [ 34.599743][ T2456] R10: 0000000000000002 R11: 0000000000000000 R12: ffff888111f9dbb8 [ 34.607701][ T2456] R13: 0000000000000008 R14: 0000000000000002 R15: 0000000000000000 [ 34.615661][ T2456] ? c_start+0x1da/0x250 [ 34.619901][ T2456] ? c_start+0x1da/0x250 [ 34.624135][ T2456] seq_read_iter+0x2ca/0x12d0 [ 34.628810][ T2456] proc_reg_read_iter+0x115/0x2d0 [ 34.633824][ T2456] vfs_read+0x681/0x930 [ 34.637970][ T2456] ? kernel_read+0x1c0/0x1c0 [ 34.642549][ T2456] ? __mutex_unlock_slowpath+0x157/0x5e0 [ 34.648178][ T2456] ? __fget_files+0x26a/0x480 [ 34.652853][ T2456] ksys_read+0x12b/0x250 [ 34.657091][ T2456] ? vfs_write+0xe10/0xe10 [ 34.661499][ T2456] ? syscall_enter_from_user_mode+0x26/0xb0 [ 34.667387][ T2456] do_syscall_64+0x39/0xb0 [ 34.671792][ T2456] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 34.677678][ T2456] RIP: 0033:0x403ace [ 34.681570][ 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 [ 34.701167][ T2456] RSP: 002b:000000c0004a3308 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 34.709571][ T2456] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000403ace [ 34.717549][ T2456] RDX: 0000000000001000 RSI: 000000c000340000 RDI: 0000000000000003 [ 34.725510][ T2456] RBP: 000000c0004a3348 R08: 0000000000000000 R09: 0000000000000000 [ 34.733467][ T2456] R10: 0000000000000000 R11: 0000000000000202 R12: 000000c0004a3488 [ 34.741426][ T2456] R13: 0000000000000000 R14: 000000c0000061a0 R15: 0000000000000001 [ 34.749388][ T2456] [ 34.752554][ T2456] Kernel Offset: disabled [ 34.756933][ T2456] Rebooting in 86400 seconds..