HSR: VLAN not yet supported ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9563 at net/hsr/hsr_forward.c:337 hsr_fill_frame_info net/hsr/hsr_forward.c:337 [inline] WARNING: CPU: 1 PID: 9563 at net/hsr/hsr_forward.c:337 hsr_forward_skb.cold+0x87/0xef net/hsr/hsr_forward.c:371 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9563 Comm: syz-executor.1 Not tainted 4.14.304-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 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:183 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:967 RIP: 0010:hsr_fill_frame_info net/hsr/hsr_forward.c:337 [inline] RIP: 0010:hsr_forward_skb.cold+0x87/0xef net/hsr/hsr_forward.c:371 RSP: 0018:ffff88804ee27710 EFLAGS: 00010286 RAX: 000000000000001b RBX: ffff8880aa7940c2 RCX: 0000000000000000 RDX: 00000000000003c5 RSI: ffffffff81444260 RDI: ffffed1009dc4ed8 RBP: ffff8880afa19200 R08: 000000000000001b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880afa192c6 R13: ffff88809b06be80 R14: ffff8880aa7940ce R15: ffff8880afa192d0 hsr_dev_xmit+0x6b/0xa0 net/hsr/hsr_device.c:242 __netdev_start_xmit include/linux/netdevice.h:4054 [inline] netdev_start_xmit include/linux/netdevice.h:4063 [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 packet_snd+0x13aa/0x26f0 net/packet/af_packet.c:3031 packet_sendmsg+0x12ed/0x33a0 net/packet/af_packet.c:3060 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 SYSC_sendto net/socket.c:1763 [inline] SyS_sendto+0x1c7/0x2c0 net/socket.c:1731 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f63354dd0c9 RSP: 002b:00007f6333a4f168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f63355fcf80 RCX: 00007f63354dd0c9 RDX: 000000000000000e RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f6335538ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe0b3827df R14: 00007f6333a4f300 R15: 0000000000022000 Kernel Offset: disabled ============================= WARNING: suspicious RCU usage 4.14.304-syzkaller #0 Not tainted ----------------------------- kernel/sched/core.c:6006 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 1 lock held by syz-executor.1/9563: #0: (rcu_read_lock_bh){....}, at: [] __dev_queue_xmit+0x1ac/0x2480 net/core/dev.c:3455 stack backtrace: CPU: 1 PID: 9563 Comm: syz-executor.1 Not tainted 4.14.304-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 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:6006 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:1087 fbcon_blank+0x7ed/0xd50 drivers/video/fbdev/core/fbcon.c:2199 do_unblank_screen+0x1fd/0x4e0 drivers/tty/vt/vt.c:3954 panic+0x290/0x42d kernel/panic.c:236 __warn.cold+0x20/0x44 kernel/panic.c:547 report_bug+0x208/0x250 lib/bug.c:183 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:967 RIP: 0010:hsr_fill_frame_info net/hsr/hsr_forward.c:337 [inline] RIP: 0010:hsr_forward_skb.cold+0x87/0xef net/hsr/hsr_forward.c:371 RSP: 0018:ffff88804ee27710 EFLAGS: 00010286 RAX: 000000000000001b RBX: ffff8880aa7940c2 RCX: 0000000000000000 RDX: 00000000000003c5 RSI: ffffffff81444260 RDI: ffffed1009dc4ed8 RBP: ffff8880afa19200 R08: 000000000000001b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880afa192c6 R13: ffff88809b06be80 R14: ffff8880aa7940ce R15: ffff8880afa192d0 hsr_dev_xmit+0x6b/0xa0 net/hsr/hsr_device.c:242 __netdev_start_xmit include/linux/netdevice.h:4054 [inline] netdev_start_xmit include/linux/netdevice.h:4063 [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 packet_snd+0x13aa/0x26f0 net/packet/af_packet.c:3031 packet_sendmsg+0x12ed/0x33a0 net/packet/af_packet.c:3060 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 SYSC_sendto net/socket.c:1763 [inline] SyS_sendto+0x1c7/0x2c0 net/socket.c:1731 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f63354dd0c9 RSP: 002b:00007f6333a4f168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f63355fcf80 RCX: 00007f63354dd0c9 RDX: 000000000000000e RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f6335538ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe0b3827df R14: 00007f6333a4f300 R15: 0000000000022000 Rebooting in 86400 seconds..