hsr_addr_subst_dest: Unknown node ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1250 at net/hsr/hsr_framereg.c:313 hsr_addr_subst_dest.cold+0x45/0x4c net/hsr/hsr_framereg.c:313 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 1250 Comm: syz-executor.3 Not tainted 4.14.232-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x20/0x44 kernel/panic.c:547 report_bug+0x208/0x250 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 RIP: 0010:hsr_addr_subst_dest.cold+0x45/0x4c net/hsr/hsr_framereg.c:313 RSP: 0018:ffff888098abf730 EFLAGS: 00010282 RAX: 0000000000000021 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 000000000000a915 RSI: ffffffff81441a30 RDI: ffffed1013157edc RBP: ffff8880a6a225c2 R08: 0000000000000021 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 00000000aaaaaaaa R13: ffff8880a55c9760 R14: ffff8880a55c9760 R15: 000000000000bbaa hsr_xmit net/hsr/hsr_forward.c:230 [inline] hsr_forward_do net/hsr/hsr_forward.c:295 [inline] hsr_forward_skb+0x103d/0x19c0 net/hsr/hsr_forward.c:373 hsr_dev_xmit+0x6b/0xa0 net/hsr/hsr_device.c:242 __netdev_start_xmit include/linux/netdevice.h:4051 [inline] netdev_start_xmit include/linux/netdevice.h:4060 [inline] xmit_one net/core/dev.c:3005 [inline] dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021 __dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521 pppoe_sendmsg+0x55e/0x6a0 drivers/net/ppp/pppoe.c:909 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x326/0x800 net/socket.c:2062 __sys_sendmmsg+0x129/0x330 net/socket.c:2152 SYSC_sendmmsg net/socket.c:2183 [inline] SyS_sendmmsg+0x2f/0x50 net/socket.c:2178 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4665f9 RSP: 002b:00007f2572572188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9 RDX: 04000000000000eb RSI: 000000002000d180 RDI: 0000000000000003 RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffee5e34b2f R14: 00007f2572572300 R15: 0000000000022000 Kernel Offset: disabled ============================= WARNING: suspicious RCU usage 4.14.232-syzkaller #0 Not tainted ----------------------------- kernel/sched/core.c:6003 Illegal context switch in RCU-bh read-side critical section! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 2 locks held by syz-executor.3/1250: #0: (sk_lock-AF_PPPOX){+.+.}, at: [] lock_sock include/net/sock.h:1471 [inline] #0: (sk_lock-AF_PPPOX){+.+.}, at: [] pppoe_sendmsg+0x85/0x6a0 drivers/net/ppp/pppoe.c:858 #1: (rcu_read_lock_bh){....}, at: [] __dev_queue_xmit+0x1ac/0x2480 net/core/dev.c:3455 stack backtrace: CPU: 0 PID: 1250 Comm: syz-executor.3 Not tainted 4.14.232-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 ___might_sleep+0x211/0x2b0 kernel/sched/core.c:6003 down_read+0x17/0x80 kernel/locking/rwsem.c:23 __blocking_notifier_call_chain kernel/notifier.c:316 [inline] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] blocking_notifier_call_chain kernel/notifier.c:328 [inline] blocking_notifier_call_chain+0x63/0x90 kernel/notifier.c:325 fb_blank+0x94/0x190 drivers/video/fbdev/core/fbmem.c:1076 fbcon_blank+0x7ed/0xd50 drivers/video/fbdev/core/fbcon.c:2199 do_unblank_screen+0x1fd/0x4e0 drivers/tty/vt/vt.c:3937 panic+0x290/0x42d kernel/panic.c:236 __warn.cold+0x20/0x44 kernel/panic.c:547 report_bug+0x208/0x250 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 RIP: 0010:hsr_addr_subst_dest.cold+0x45/0x4c net/hsr/hsr_framereg.c:313 RSP: 0018:ffff888098abf730 EFLAGS: 00010282 RAX: 0000000000000021 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 000000000000a915 RSI: ffffffff81441a30 RDI: ffffed1013157edc RBP: ffff8880a6a225c2 R08: 0000000000000021 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 00000000aaaaaaaa R13: ffff8880a55c9760 R14: ffff8880a55c9760 R15: 000000000000bbaa hsr_xmit net/hsr/hsr_forward.c:230 [inline] hsr_forward_do net/hsr/hsr_forward.c:295 [inline] hsr_forward_skb+0x103d/0x19c0 net/hsr/hsr_forward.c:373 hsr_dev_xmit+0x6b/0xa0 net/hsr/hsr_device.c:242 __netdev_start_xmit include/linux/netdevice.h:4051 [inline] netdev_start_xmit include/linux/netdevice.h:4060 [inline] xmit_one net/core/dev.c:3005 [inline] dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021 __dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521 pppoe_sendmsg+0x55e/0x6a0 drivers/net/ppp/pppoe.c:909 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x326/0x800 net/socket.c:2062 __sys_sendmmsg+0x129/0x330 net/socket.c:2152 SYSC_sendmmsg net/socket.c:2183 [inline] SyS_sendmmsg+0x2f/0x50 net/socket.c:2178 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4665f9 RSP: 002b:00007f2572572188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9 RDX: 04000000000000eb RSI: 000000002000d180 RDI: 0000000000000003 RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffee5e34b2f R14: 00007f2572572300 R15: 0000000000022000 Rebooting in 86400 seconds..