BUG: unable to handle page fault for address: ffff8880977fc000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 1b201067 P4D 1b201067 PUD 0 
Oops: Oops: 0002 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 20892 Comm: syz.9.3438 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
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+0x1d5/0x250 drivers/net/bonding/bond_main.c:4836
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 52 5f 6e fb 83 c3 01 89 d8 5b 5d 41 5c 41 5d 41 5e
RSP: 0018:ffffc9000380f590 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc90007ade000
RDX: 1ffff1100bd581ce RSI: ffffffff86500b59 RDI: ffff88805eac0e70
RBP: ffff88805eac0000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000001 R11: ffff888027868b30 R12: ffff88805eac0d80
R13: 0000000000008f00 R14: ffff88805eac0d80 R15: ffffc9000380f900
FS:  0000000000000000(0000) GS:ffff8880977fc000(0063) knlGS:00000000f543db40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffff8880977fc000 CR3: 000000006293d000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 bond_xdp_xmit_roundrobin_slave_get drivers/net/bonding/bond_main.c:4923 [inline]
 bond_xdp_get_xmit_slave+0x2a9/0x6b0 drivers/net/bonding/bond_main.c:5506
 xdp_master_redirect+0x161/0x330 net/core/filter.c:4388
 bpf_prog_run_xdp include/net/xdp.h:700 [inline]
 xdp_test_run_batch.constprop.0+0x18b9/0x1f20 net/bpf/test_run.c:307
 bpf_test_run_xdp_live+0x365/0x770 net/bpf/test_run.c:379
 bpf_prog_test_run_xdp+0xd3d/0x1660 net/bpf/test_run.c:1388
 bpf_prog_test_run kernel/bpf/syscall.c:4703 [inline]
 __sys_bpf+0x1035/0x4980 kernel/bpf/syscall.c:6182
 __do_sys_bpf kernel/bpf/syscall.c:6274 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6272 [inline]
 __ia32_sys_bpf+0x76/0xe0 kernel/bpf/syscall.c:6272
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xe8/0x680 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:332
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf704d579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f543d55c EFLAGS: 00000296 ORIG_RAX: 0000000000000165
RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000080000600
RDX: 0000000000000050 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
CR2: ffff8880977fc000
---[ end trace 0000000000000000 ]---
RIP: 0010:bond_rr_gen_slave_id+0x1d5/0x250 drivers/net/bonding/bond_main.c:4836
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 52 5f 6e fb 83 c3 01 89 d8 5b 5d 41 5c 41 5d 41 5e
RSP: 0018:ffffc9000380f590 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc90007ade000
RDX: 1ffff1100bd581ce RSI: ffffffff86500b59 RDI: ffff88805eac0e70
RBP: ffff88805eac0000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000001 R11: ffff888027868b30 R12: ffff88805eac0d80
R13: 0000000000008f00 R14: ffff88805eac0d80 R15: ffffc9000380f900
FS:  0000000000000000(0000) GS:ffff8880977fc000(0063) knlGS:00000000f543db40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffff8880977fc000 CR3: 000000006293d000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
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 52 5f 6e fb       	call   0xfb6e5f81
  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