general protection fault, probably for non-canonical address 0xdffffc0000000030: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000180-0x0000000000000187] CPU: 0 PID: 20331 Comm: syz-executor.4 Not tainted 5.15.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:perf_tp_event_match kernel/events/core.c:9657 [inline] RIP: 0010:perf_tp_event+0x1d5/0xb70 kernel/events/core.c:9708 Code: 89 85 e8 fd ff ff eb 0f e8 f8 38 e1 ff 48 83 eb 60 0f 84 4a 01 00 00 e8 e9 38 e1 ff 48 8d bb e0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e 50 08 00 00 44 8b bb e0 01 RSP: 0018:ffffc90000007a00 EFLAGS: 00010006 RAX: 0000000000000030 RBX: ffffffffffffffa1 RCX: 0000000000000000 RDX: ffff88801db01c80 RSI: ffffffff81959f37 RDI: 0000000000000181 RBP: ffffc90000007c70 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff817b225d R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880b9c2c950 R14: 0000000000000001 R15: 1ffff1101738593b FS: 00007f0a32aa6700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffea2312ff8 CR3: 000000003cc57000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: perf_trace_run_bpf_submit+0x11c/0x210 kernel/events/core.c:9683 perf_trace_lock_acquire+0x34c/0x550 include/trace/events/lock.h:13 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x416/0x510 kernel/locking/lockdep.c:5596 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162 hrtimer_interrupt+0x103/0x790 kernel/time/hrtimer.c:1792 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:perf_trace_buf_alloc+0x113/0x260 kernel/trace/trace_event_perf.c:412 Code: df 48 c1 ea 03 80 3c 02 00 0f 85 54 01 00 00 4d 89 65 00 e8 df 35 f8 ff 48 83 fb 03 0f 87 fb 00 00 00 48 8d 3c dd a0 8b 25 90 <48> b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f RSP: 0018:ffffc90004917868 EFLAGS: 00000293 RAX: 000000000000b537 RBX: 0000000000000000 RCX: ffffc9001223e000 RDX: 0000000000040000 RSI: ffffffff817ea241 RDI: ffffffff90258ba0 RBP: 0000000000000024 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff817ea1b2 R11: 0000000000000000 R12: ffff8880b9c2c800 R13: ffffc90004917918 R14: 0000000000000000 R15: ffffc90004917958 perf_trace_lock_acquire+0x180/0x550 include/trace/events/lock.h:13 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x416/0x510 kernel/locking/lockdep.c:5596 __fs_reclaim_acquire mm/page_alloc.c:4539 [inline] fs_reclaim_acquire+0x115/0x160 mm/page_alloc.c:4553 might_alloc include/linux/sched/mm.h:198 [inline] slab_pre_alloc_hook mm/slab.h:492 [inline] slab_alloc_node mm/slub.c:3120 [inline] slab_alloc mm/slub.c:3214 [inline] kmem_cache_alloc+0x3e/0x390 mm/slub.c:3219 kmem_cache_zalloc include/linux/slab.h:711 [inline] alloc_vfsmnt+0x23/0x6b0 fs/namespace.c:197 clone_mnt+0x6d/0x1080 fs/namespace.c:1055 copy_tree+0xfe/0xae0 fs/namespace.c:1837 propagate_one.part.0+0x33d/0x660 fs/pnode.c:261 propagate_one fs/pnode.c:233 [inline] propagate_mnt+0x1b7/0x510 fs/pnode.c:308 attach_recursive_mnt+0x8da/0x1060 fs/namespace.c:2179 graft_tree+0x187/0x210 fs/namespace.c:2287 do_loopback fs/namespace.c:2402 [inline] path_mount+0x1ab5/0x1fa0 fs/namespace.c:3312 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount fs/namespace.c:3516 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f0a35551a39 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0a32aa6188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f0a35655020 RCX: 00007f0a35551a39 RDX: 0000000000000000 RSI: 0000000020000940 RDI: 0000000020000000 RBP: 00007f0a355abe8f R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000500c R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe7dab6ecf R14: 00007f0a32aa6300 R15: 0000000000022000 Modules linked in: ---[ end trace 3edeea70740485ea ]--- RIP: 0010:perf_tp_event_match kernel/events/core.c:9657 [inline] RIP: 0010:perf_tp_event+0x1d5/0xb70 kernel/events/core.c:9708 Code: 89 85 e8 fd ff ff eb 0f e8 f8 38 e1 ff 48 83 eb 60 0f 84 4a 01 00 00 e8 e9 38 e1 ff 48 8d bb e0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e 50 08 00 00 44 8b bb e0 01 RSP: 0018:ffffc90000007a00 EFLAGS: 00010006 RAX: 0000000000000030 RBX: ffffffffffffffa1 RCX: 0000000000000000 RDX: ffff88801db01c80 RSI: ffffffff81959f37 RDI: 0000000000000181 RBP: ffffc90000007c70 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff817b225d R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880b9c2c950 R14: 0000000000000001 R15: 1ffff1101738593b FS: 00007f0a32aa6700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffea2312ff8 CR3: 000000003cc57000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 89 85 e8 fd ff ff mov %eax,-0x218(%rbp) 6: eb 0f jmp 0x17 8: e8 f8 38 e1 ff callq 0xffe13905 d: 48 83 eb 60 sub $0x60,%rbx 11: 0f 84 4a 01 00 00 je 0x161 17: e8 e9 38 e1 ff callq 0xffe13905 1c: 48 8d bb e0 01 00 00 lea 0x1e0(%rbx),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 74 08 je 0x3b 33: 3c 03 cmp $0x3,%al 35: 0f 8e 50 08 00 00 jle 0x88b 3b: 44 rex.R 3c: 8b .byte 0x8b 3d: bb .byte 0xbb 3e: e0 01 loopne 0x41