[syzbot] [net?] general protection fault in hsr_proxy_announce

[syzbot <syzbot+02a42d9b1bd395cbcab4@syzkaller.appspotmail.com>]

Hello,

syzbot found the following issue on:

HEAD commit:    780801200300 Merge branch 'fbnic-ethtool'
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=10175d29980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=996585887acdadb3
dashboard link: https://syzkaller.appspot.com/bug?extid=02a42d9b1bd395cbcab4
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/030fc5a1120b/disk-78080120.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5b3504af771a/vmlinux-78080120.xz
kernel image: https://storage.googleapis.com/syzbot-assets/076c89aa8522/bzImage-78080120.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+02a42d9b1bd395cbcab4@syzkaller.appspotmail.com

Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 UID: 0 PID: 11116 Comm: syz.4.1509 Not tainted 6.11.0-rc5-syzkaller-00859-g780801200300 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:hsr_proxy_announce+0x2a2/0x4c0 net/hsr/hsr_device.c:437
Code: 8b 64 24 30 4c 8b 6c 24 28 eb 05 e8 38 1e f9 f5 48 8b 5c 24 20 48 83 c3 10 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 4c 8b 74 24 18 74 08 48 89 df e8 fb 68 60 f6 48 8b 1b
RSP: 0018:ffffc90000a18ae0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: dffffc0000000000
RDX: 0000000000000100 RSI: 0000000000000003 RDI: ffff888028de6cc0
RBP: ffffc90000a18bb0 R08: ffffffff8b9a6c52 R09: 1ffffffff283cb08
R10: dffffc0000000000 R11: fffffbfff283cb09 R12: 1ffff92000143164
R13: ffffffff8b9a6c21 R14: ffff888028de6cf0 R15: ffff888028de6cf0
FS:  00007f1c709906c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c7098ff98 CR3: 00000000652c4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792
 expire_timers kernel/time/timer.c:1843 [inline]
 __run_timers kernel/time/timer.c:2417 [inline]
 __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428
 run_timer_base kernel/time/timer.c:2437 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447
 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__text_poke+0xa4a/0xd30 arch/x86/kernel/alternative.c:1960
Code: 7c 24 50 00 75 19 e8 b5 56 5e 00 eb 18 e8 ae 56 5e 00 e8 39 05 85 0a 48 83 7c 24 50 00 74 e7 e8 9c 56 5e 00 fb 48 8b 44 24 78 <42> 80 3c 28 00 74 0d 48 8d bc 24 60 01 00 00 e8 72 a1 c5 00 48 8b
RSP: 0018:ffffc900091f79c0 EFLAGS: 00000287
RAX: 1ffff9200123ef64 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000a0bc000 RSI: 0000000000023bf4 RDI: 0000000000023bf5
RBP: ffffc900091f7b90 R08: ffffffff81353564 R09: 1ffffffff283cb08
R10: dffffc0000000000 R11: fffffbfff283cb09 R12: 1ffff9200123ef48
R13: dffffc0000000000 R14: 0000000000000046 R15: ffffffff81b6cc2c
 text_poke arch/x86/kernel/alternative.c:1984 [inline]
 text_poke_bp_batch+0x8cd/0xb30 arch/x86/kernel/alternative.c:2373
 text_poke_flush arch/x86/kernel/alternative.c:2486 [inline]
 text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2493
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 static_key_slow_inc_cpuslocked+0x80/0xf0 kernel/jump_label.c:168
 static_key_slow_inc+0x1a/0x30 kernel/jump_label.c:191
 bpf_enable_runtime_stats kernel/bpf/syscall.c:5541 [inline]
 bpf_enable_stats+0xfe/0x140 kernel/bpf/syscall.c:5560
 __sys_bpf+0x75b/0x810 kernel/bpf/syscall.c:5793
 __do_sys_bpf kernel/bpf/syscall.c:5817 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5815 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5815
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1c6fb7cef9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1c70990038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f1c6fd35f80 RCX: 00007f1c6fb7cef9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000020
RBP: 00007f1c6fbef01e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f1c6fd35f80 R15: 00007ffdbe19d3a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hsr_proxy_announce+0x2a2/0x4c0 net/hsr/hsr_device.c:437
Code: 8b 64 24 30 4c 8b 6c 24 28 eb 05 e8 38 1e f9 f5 48 8b 5c 24 20 48 83 c3 10 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 4c 8b 74 24 18 74 08 48 89 df e8 fb 68 60 f6 48 8b 1b
RSP: 0018:ffffc90000a18ae0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: dffffc0000000000
RDX: 0000000000000100 RSI: 0000000000000003 RDI: ffff888028de6cc0
RBP: ffffc90000a18bb0 R08: ffffffff8b9a6c52 R09: 1ffffffff283cb08
R10: dffffc0000000000 R11: fffffbfff283cb09 R12: 1ffff92000143164
R13: ffffffff8b9a6c21 R14: ffff888028de6cf0 R15: ffff888028de6cf0
FS:  00007f1c709906c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c7098ff98 CR3: 00000000652c4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	8b 64 24 30          	mov    0x30(%rsp),%esp
   4:	4c 8b 6c 24 28       	mov    0x28(%rsp),%r13
   9:	eb 05                	jmp    0x10
   b:	e8 38 1e f9 f5       	call   0xf5f91e48
  10:	48 8b 5c 24 20       	mov    0x20(%rsp),%rbx
  15:	48 83 c3 10          	add    $0x10,%rbx
  19:	48 89 d8             	mov    %rbx,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2e:	4c 8b 74 24 18       	mov    0x18(%rsp),%r14
  33:	74 08                	je     0x3d
  35:	48 89 df             	mov    %rbx,%rdi
  38:	e8 fb 68 60 f6       	call   0xf6606938
  3d:	48 8b 1b             	mov    (%rbx),%rbx


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