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Message-ID: <00000000000030c41e0621700b61@google.com> Date: Fri, 06 Sep 2024 02:29:28 -0700 From: syzbot <syzbot+02a42d9b1bd395cbcab4@...kaller.appspotmail.com> To: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org, pabeni@...hat.com, syzkaller-bugs@...glegroups.com Subject: [syzbot] [net?] general protection fault in hsr_proxy_announce 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@...kaller.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 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@...glegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
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