Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 UID: 0 PID: 8348 Comm: syz.0.601 Not tainted 6.13.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:llc_conn_state_process+0xc5d/0x12e0 Code: 0f 94 c0 4c 8b 75 00 44 8d 64 00 01 b8 01 00 00 00 bd 07 00 00 00 0f 44 e8 4c 89 f0 48 c1 e8 03 48 ba 00 00 00 00 00 fc ff df <0f> b6 04 10 84 c0 0f 85 c1 05 00 00 45 89 26 0f b6 04 13 84 c0 0f RSP: 0018:ffffc90000007ac8 EFLAGS: 00010256 RAX: 0000000000000000 RBX: 1ffff11006b0e802 RCX: ffff8880264f0000 RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: 0000000000000007 R08: ffffffff89b27ad1 R09: ffffffff89b278b8 R10: 0000000000000005 R11: ffff8880264f0000 R12: 0000000000000001 R13: ffff888035874000 R14: 0000000000000000 R15: ffff888035874012 FS: 00007f7ae434e6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002002e000 CR3: 0000000056670000 CR4: 0000000000350ef0 Call Trace: llc_process_tmr_ev net/llc/llc_c_ac.c:1445 [inline] llc_conn_tmr_common_cb+0x34c/0x850 net/llc/llc_c_ac.c:1331 call_timer_fn+0x189/0x650 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1844 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_is_held_type+0x13b/0x190 Code: 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 42 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f RSP: 0018:ffffc9000f2bf7b8 EFLAGS: 00000206 RAX: 3cc298e5d4558b00 RBX: 0000000000000000 RCX: ffff8880264f0000 RDX: 0000000000000000 RSI: ffffffff8c0aaa40 RDI: ffffffff8c5fb020 RBP: ffffc9000f2bf910 R08: ffffffff84fb5062 R09: 1ffffffff2032fbe R10: dffffc0000000000 R11: fffffbfff2032fbf R12: 0000000000000246 R13: ffff8880264f0000 R14: 00000000ffffffff R15: ffffffff8e937b40 lock_is_held include/linux/lockdep.h:249 [inline] __might_resched+0xa5/0x780 kernel/sched/core.c:8720 __wait_for_common kernel/sched/completion.c:111 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x92/0x620 kernel/sched/completion.c:148 rdmsr_safe_on_cpu+0x16c/0x310 arch/x86/lib/msr-smp.c:181 msr_read+0x15d/0x260 arch/x86/kernel/msr.c:66 vfs_read+0x1fe/0xb70 fs/read_write.c:563 ksys_read+0x18f/0x2b0 fs/read_write.c:708 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: 0033:0x7f7ae3585d29 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:00007f7ae434e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f7ae3775fa0 RCX: 00007f7ae3585d29 RDX: 0000000000018ff8 RSI: 0000000020019680 RDI: 0000000000000003 RBP: 00007f7ae3601aa8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f7ae3775fa0 R15: 00007ffe016e09c8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:llc_conn_state_process+0xc5d/0x12e0 Code: 0f 94 c0 4c 8b 75 00 44 8d 64 00 01 b8 01 00 00 00 bd 07 00 00 00 0f 44 e8 4c 89 f0 48 c1 e8 03 48 ba 00 00 00 00 00 fc ff df <0f> b6 04 10 84 c0 0f 85 c1 05 00 00 45 89 26 0f b6 04 13 84 c0 0f RSP: 0018:ffffc90000007ac8 EFLAGS: 00010256 RAX: 0000000000000000 RBX: 1ffff11006b0e802 RCX: ffff8880264f0000 RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: 0000000000000007 R08: ffffffff89b27ad1 R09: ffffffff89b278b8 R10: 0000000000000005 R11: ffff8880264f0000 R12: 0000000000000001 R13: ffff888035874000 R14: 0000000000000000 R15: ffff888035874012 FS: 00007f7ae434e6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002002e000 CR3: 0000000056670000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 0f 94 c0 sete %al 3: 4c 8b 75 00 mov 0x0(%rbp),%r14 7: 44 8d 64 00 01 lea 0x1(%rax,%rax,1),%r12d c: b8 01 00 00 00 mov $0x1,%eax 11: bd 07 00 00 00 mov $0x7,%ebp 16: 0f 44 e8 cmove %eax,%ebp 19: 4c 89 f0 mov %r14,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 27: fc ff df * 2a: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 c1 05 00 00 jne 0x5f7 36: 45 89 26 mov %r12d,(%r14) 39: 0f b6 04 13 movzbl (%rbx,%rdx,1),%eax 3d: 84 c0 test %al,%al 3f: 0f .byte 0xf