Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 20745 Comm: syz.3.4253 Not tainted 6.10.0-syzkaller-12084-g28bbe4ea686a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:bq_flush_to_queue+0x44/0x610 kernel/bpf/cpumap.c:675
Code: df e8 40 d8 d6 ff 49 8d 5e 50 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 f6 e8 3a 00 48 8b 2b 48 89 e8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 1d 05 00 00 44 8b 65 00 4d 8d 6e 58 4c
RSP: 0018:ffffc90000007a80 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88802f2a1310 RCX: ffff888051241e00
RDX: 0000000080000100 RSI: 0000000000000010 RDI: ffff88802f2a12c0
RBP: 0000000000000000 R08: ffffffff896117da R09: 1ffffffff1f5cf4d
R10: dffffc0000000000 R11: fffffbfff1f5cf4e R12: 0000000000000001
R13: ffffc900033df820 R14: ffff88802f2a12c0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556919e808 CR3: 00000000664de000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__cpu_map_flush+0x5d/0xd0 kernel/bpf/cpumap.c:767
xdp_do_check_flushed+0x136/0x240 net/core/filter.c:4304
__napi_poll+0xe4/0x490 net/core/dev.c:6774
napi_poll net/core/dev.c:6840 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6962
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
common_interrupt+0xaa/0xd0 arch/x86/kernel/irq.c:278
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:206
Code: 8b 3d 2c 60 4a 0c 48 89 de 5b e9 e3 60 58 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 00 d7 03 00 65 8b 15 10 54 70 7e f7 c2 00 01 ff 00
RSP: 0018:ffffc900033df480 EFLAGS: 00000293
RAX: ffffffff81408a82 RBX: ffffea0000a35a40 RCX: ffff888051241e00
RDX: 0000000000000000 RSI: ffffea0000a35a40 RDI: ffffc900033df860
RBP: 0000000080000000 R08: ffffffff8142a1e6 R09: 1ffffffff25f9b06
R10: dffffc0000000000 R11: fffffbfff25f9b07 R12: dffffc0000000000
R13: ffffea0000a35a40 R14: ffffc900033df860 R15: ffffea0000a35a70
native_tlb_remove_table+0x12/0x50 arch/x86/kernel/paravirt.c:64
paravirt_tlb_remove_table arch/x86/include/asm/paravirt.h:96 [inline]
___pte_free_tlb+0xbe/0x130 arch/x86/mm/pgtable.c:57
__pte_free_tlb arch/x86/include/asm/pgalloc.h:61 [inline]
free_pte_range mm/memory.c:194 [inline]
free_pmd_range mm/memory.c:212 [inline]
free_pud_range mm/memory.c:246 [inline]
free_p4d_range mm/memory.c:280 [inline]
free_pgd_range+0x727/0xdd0 mm/memory.c:360
free_pgtables+0x719/0x840
exit_mmap+0x447/0xc80 mm/mmap.c:3393
__mmput+0x115/0x380 kernel/fork.c:1345
exit_mm+0x220/0x310 kernel/exit.c:571
do_exit+0x9b2/0x27f0 kernel/exit.c:869
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
get_signal+0x1695/0x1730 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6642b75f19
Code: Unable to access opcode bytes at 0x7f6642b75eef.
RSP: 002b:00007f66438b10f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f6642d05f68 RCX: 00007f6642b75f19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f6642d05f68
RBP: 00007f6642d05f60 R08: 00007f66438b16c0 R09: 00007f66438b16c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6642d05f6c
R13: 000000000000000b R14: 00007ffe0742db30 R15: 00007ffe0742dc18
Modules linked in:
vkms_vblank_simulate: vblank timer overrun
---[ end trace 0000000000000000 ]---
RIP: 0010:bq_flush_to_queue+0x44/0x610 kernel/bpf/cpumap.c:675
Code: df e8 40 d8 d6 ff 49 8d 5e 50 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 f6 e8 3a 00 48 8b 2b 48 89 e8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 1d 05 00 00 44 8b 65 00 4d 8d 6e 58 4c
RSP: 0018:ffffc90000007a80 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88802f2a1310 RCX: ffff888051241e00
RDX: 0000000080000100 RSI: 0000000000000010 RDI: ffff88802f2a12c0
RBP: 0000000000000000 R08: ffffffff896117da R09: 1ffffffff1f5cf4d
R10: dffffc0000000000 R11: fffffbfff1f5cf4e R12: 0000000000000001
R13: ffffc900033df820 R14: ffff88802f2a12c0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556919e808 CR3: 00000000664de000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: df e8 fucomip %st(0),%st
2: 40 d8 d6 rex fcom %st(6)
5: ff 49 8d decl -0x73(%rcx)
8: 5e pop %rsi
9: 50 push %rax
a: 48 89 d8 mov %rbx,%rax
d: 48 c1 e8 03 shr $0x3,%rax
11: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
16: 74 08 je 0x20
18: 48 89 df mov %rbx,%rdi
1b: e8 f6 e8 3a 00 call 0x3ae916
20: 48 8b 2b mov (%rbx),%rbp
23: 48 89 e8 mov %rbp,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 1d 05 00 00 jne 0x554
37: 44 8b 65 00 mov 0x0(%rbp),%r12d
3b: 4d 8d 6e 58 lea 0x58(%r14),%r13
3f: 4c rex.WR