BUG: unable to handle page fault for address: ffff8880d68b5000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 1b401067 P4D 1b401067 PUD 0 Oops: Oops: 0002 [#1] SMP KASAN NOPTI CPU: 2 UID: 0 PID: 15745 Comm: syz.2.4741 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:bond_rr_gen_slave_id+0x1df/0x260 drivers/net/bonding/bond_main.c:5025 Code: bc 24 f0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 7a 49 8b 84 24 f0 00 00 00 bb 01 00 00 00 <65> 0f c1 18 e8 68 4e 3b fb 83 c3 01 89 d8 5b 5d 41 5c 41 5d 41 5e RSP: 0018:ffffc9000729f650 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff86803e59 RDX: 1ffff1100b4b31ce RSI: ffffffff86803fb3 RDI: ffff88805a598e70 RBP: ffff88805a598000 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88805a598d80 R13: 0000000000008f00 R14: ffff88805a598d80 R15: dffffc0000000000 FS: 00007f54741d56c0(0000) GS:ffff8880d68b5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8880d68b5000 CR3: 0000000021992000 CR4: 0000000000352ef0 Call Trace: bond_xdp_xmit_roundrobin_slave_get drivers/net/bonding/bond_main.c:5112 [inline] bond_xdp_get_xmit_slave+0x2a9/0x6b0 drivers/net/bonding/bond_main.c:5695 xdp_master_redirect+0x161/0x330 net/core/filter.c:4366 bpf_prog_run_xdp include/net/xdp.h:661 [inline] xdp_test_run_batch.constprop.0+0x14c2/0x1ad0 net/bpf/test_run.c:318 bpf_test_run_xdp_live+0x34d/0x500 net/bpf/test_run.c:390 bpf_prog_test_run_xdp+0x824/0x1590 net/bpf/test_run.c:1322 bpf_prog_test_run kernel/bpf/syscall.c:4590 [inline] __sys_bpf+0x104d/0x4de0 kernel/bpf/syscall.c:6047 __do_sys_bpf kernel/bpf/syscall.c:6139 [inline] __se_sys_bpf kernel/bpf/syscall.c:6137 [inline] __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:6137 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5475f8ebe9 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:00007f54741d5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f54761c6090 RCX: 00007f5475f8ebe9 RDX: 0000000000000050 RSI: 0000200000000600 RDI: 000000000000000a RBP: 00007f5476011e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f54761c6128 R14: 00007f54761c6090 R15: 00007ffe66b0c738 Modules linked in: CR2: ffff8880d68b5000 ---[ end trace 0000000000000000 ]--- RIP: 0010:bond_rr_gen_slave_id+0x1df/0x260 drivers/net/bonding/bond_main.c:5025 Code: bc 24 f0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 7a 49 8b 84 24 f0 00 00 00 bb 01 00 00 00 <65> 0f c1 18 e8 68 4e 3b fb 83 c3 01 89 d8 5b 5d 41 5c 41 5d 41 5e RSP: 0018:ffffc9000729f650 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff86803e59 RDX: 1ffff1100b4b31ce RSI: ffffffff86803fb3 RDI: ffff88805a598e70 RBP: ffff88805a598000 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88805a598d80 R13: 0000000000008f00 R14: ffff88805a598d80 R15: dffffc0000000000 FS: 00007f54741d56c0(0000) GS:ffff8880d68b5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8880d68b5000 CR3: 0000000021992000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess), 4 bytes skipped: 0: 00 00 add %al,(%rax) 2: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 9: fc ff df c: 48 89 fa mov %rdi,%rdx f: 48 c1 ea 03 shr $0x3,%rdx 13: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 17: 75 7a jne 0x93 19: 49 8b 84 24 f0 00 00 mov 0xf0(%r12),%rax 20: 00 21: bb 01 00 00 00 mov $0x1,%ebx * 26: 65 0f c1 18 xadd %ebx,%gs:(%rax) <-- trapping instruction 2a: e8 68 4e 3b fb call 0xfb3b4e97 2f: 83 c3 01 add $0x1,%ebx 32: 89 d8 mov %ebx,%eax 34: 5b pop %rbx 35: 5d pop %rbp 36: 41 5c pop %r12 38: 41 5d pop %r13 3a: 41 5e pop %r14