INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.59' (ECDSA) to the list of known hosts. executing program executing program executing program executing program syzkaller login: [ 42.199569] syzkaller398887 uses obsolete (PF_INET,SOCK_PACKET) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 42.625438] ================================================================== [ 42.632996] BUG: KMSAN: uninit-value in arch_uprobe_exception_notify+0x20f/0x220 [ 42.640507] CPU: 0 PID: 3583 Comm: syzkaller398887 Not tainted 4.16.0+ #83 [ 42.647499] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.656829] Call Trace: [ 42.659394] dump_stack+0x185/0x1d0 [ 42.663002] ? arch_uprobe_exception_notify+0x20f/0x220 [ 42.668341] kmsan_report+0x142/0x240 [ 42.672119] __msan_warning_32+0x6c/0xb0 [ 42.676157] arch_uprobe_exception_notify+0x20f/0x220 [ 42.681330] ? arch_uprobe_post_xol+0x500/0x500 [ 42.685975] notify_die+0x247/0x3e0 [ 42.689580] math_error+0x150/0x600 [ 42.693184] ? page_fault+0x25/0x50 [ 42.696788] do_coprocessor_error+0x29/0x30 [ 42.701086] coprocessor_error+0x1b/0x40 [ 42.705123] RIP: 0010:fpu__drop+0x27f/0x4f0 [ 42.709418] RSP: 0000:ffff8801d30ffc98 EFLAGS: 00010202 [ 42.714760] RAX: ffff8801b4dd9a00 RBX: ffff8801d6bd9a01 RCX: ffff880000000000 [ 42.722016] RDX: ffff8801c64a1a04 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 [ 42.729262] RBP: ffff8801d30ffce8 R08: 0000000001080020 R09: 0000000000000002 [ 42.736508] R10: 0000000000000000 R11: ffff8801d30f0000 R12: 0000000000000000 [ 42.743754] R13: ffff8801d6bd8918 R14: ffff8801d6bd9a04 R15: 0000000000000000 [ 42.751017] ? fpu__drop+0x267/0x4f0 [ 42.754706] ? do_signal+0x168a/0x1c80 [ 42.758571] fpu__clear+0x56/0x2f0 [ 42.762088] do_signal+0x168a/0x1c80 [ 42.765781] ? errseq_sample+0x2c/0x1a0 [ 42.769731] ? kmsan_set_origin_inline+0x6b/0x120 [ 42.774552] prepare_exit_to_usermode+0x271/0x3a0 [ 42.779369] ? page_fault+0x2f/0x50 [ 42.782968] retint_user+0x8/0x8 [ 42.786308] RIP: 0033:0x4009d8 [ 42.789471] RSP: 002b:00007ffe2184cdf8 EFLAGS: 00000246 [ 42.794807] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000441cc9 [ 42.802051] RDX: 00007ffe2184ce00 RSI: 00007ffe2184cf30 RDI: 000000000000000b [ 42.809295] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 42.816538] R10: 00000000ffffffff R11: 0000000000000217 R12: 000000000000a663 [ 42.823783] R13: 00000000006ce468 R14: 0000000000000000 R15: 0000000000000000 [ 42.831030] [ 42.832632] Local variable description: ----env.i@copy_fpstate_to_sigframe [ 42.839613] Variable was created at: [ 42.843301] copy_fpstate_to_sigframe+0x6d/0x980 [ 42.848028] do_signal+0xbe4/0x1c80 [ 42.851625] ================================================================== [ 42.858952] Disabling lock debugging due to kernel taint [ 42.864375] Kernel panic - not syncing: panic_on_warn set ... [ 42.864375] [ 42.871712] CPU: 0 PID: 3583 Comm: syzkaller398887 Tainted: G B 4.16.0+ #83 [ 42.879999] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.889323] Call Trace: [ 42.891884] dump_stack+0x185/0x1d0 [ 42.895488] panic+0x39d/0x940 [ 42.898665] ? arch_uprobe_exception_notify+0x20f/0x220 [ 42.904003] kmsan_report+0x238/0x240 [ 42.907778] __msan_warning_32+0x6c/0xb0 [ 42.911817] arch_uprobe_exception_notify+0x20f/0x220 [ 42.916984] ? arch_uprobe_post_xol+0x500/0x500 [ 42.921627] notify_die+0x247/0x3e0 [ 42.925232] math_error+0x150/0x600 [ 42.928834] ? page_fault+0x25/0x50 [ 42.932438] do_coprocessor_error+0x29/0x30 [ 42.936734] coprocessor_error+0x1b/0x40 [ 42.940771] RIP: 0010:fpu__drop+0x27f/0x4f0 [ 42.945063] RSP: 0000:ffff8801d30ffc98 EFLAGS: 00010202 [ 42.950399] RAX: ffff8801b4dd9a00 RBX: ffff8801d6bd9a01 RCX: ffff880000000000 [ 42.957642] RDX: ffff8801c64a1a04 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 [ 42.964886] RBP: ffff8801d30ffce8 R08: 0000000001080020 R09: 0000000000000002 [ 42.972128] R10: 0000000000000000 R11: ffff8801d30f0000 R12: 0000000000000000 [ 42.979372] R13: ffff8801d6bd8918 R14: ffff8801d6bd9a04 R15: 0000000000000000 [ 42.986622] ? fpu__drop+0x267/0x4f0 [ 42.990318] ? do_signal+0x168a/0x1c80 [ 42.994182] fpu__clear+0x56/0x2f0 [ 42.997698] do_signal+0x168a/0x1c80 [ 43.001386] ? errseq_sample+0x2c/0x1a0 [ 43.005335] ? kmsan_set_origin_inline+0x6b/0x120 [ 43.010156] prepare_exit_to_usermode+0x271/0x3a0 [ 43.014975] ? page_fault+0x2f/0x50 [ 43.018576] retint_user+0x8/0x8 [ 43.021922] RIP: 0033:0x4009d8 [ 43.025087] RSP: 002b:00007ffe2184cdf8 EFLAGS: 00000246 [ 43.030424] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000441cc9 [ 43.037678] RDX: 00007ffe2184ce00 RSI: 00007ffe2184cf30 RDI: 000000000000000b [ 43.044933] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 43.052185] R10: 00000000ffffffff R11: 0000000000000217 R12: 000000000000a663 [ 43.059435] R13: 00000000006ce468 R14: 0000000000000000 R15: 0000000000000000 [ 43.067070] Dumping ftrace buffer: [ 43.070591] (ftrace buffer empty) [ 43.074274] Kernel Offset: disabled [ 43.077877] Rebooting in 86400 seconds..