kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 425 Comm: kworker/0:5 Not tainted 5.4.290-syzkaller-00017-g6b07fcd94a6a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events bpf_map_free_deferred
RIP: 0010:pcpu_get_page_chunk mm/percpu.c:253 [inline]
RIP: 0010:pcpu_chunk_addr_search mm/percpu.c:1568 [inline]
RIP: 0010:free_percpu+0x26d/0x910 mm/percpu.c:1972
Code: e8 03 42 80 3c 30 00 74 08 48 89 df e8 8c d5 0c 00 48 8b 3b 48 01 ef e8 61 63 07 00 48 89 c3 48 83 c3 20 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 64 d5 0c 00 4c 8b 23 4d 8d 7c 24
RSP: 0018:ffff8881ea72fc60 EFLAGS: 00010002
RAX: 0000000000000004 RBX: 0000000000000020 RCX: ffff8881f32fee40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffe8ffff638000 R08: ffffffff818ec60b R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff88823fe9f5c0
R13: 0000607e08838000 R14: dffffc0000000000 R15: ffffe8ffff638000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555572b384a8 CR3: 00000001d5683000 CR4: 00000000003406b0
DR0: 0000400000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 htab_free_elems kernel/bpf/hashtab.c:112 [inline]
 prealloc_destroy kernel/bpf/hashtab.c:194 [inline]
 htab_map_free+0x45d/0x670 kernel/bpf/hashtab.c:1238
 bpf_map_free_deferred+0xa8/0x100 kernel/bpf/syscall.c:311
 process_one_work+0x765/0xd20 kernel/workqueue.c:2290
 worker_thread+0xaef/0x1470 kernel/workqueue.c:2436
 kthread+0x2da/0x360 kernel/kthread.c:288
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354
Modules linked in:
---[ end trace e4dd5ead545f1765 ]---
RIP: 0010:pcpu_get_page_chunk mm/percpu.c:253 [inline]
RIP: 0010:pcpu_chunk_addr_search mm/percpu.c:1568 [inline]
RIP: 0010:free_percpu+0x26d/0x910 mm/percpu.c:1972
Code: e8 03 42 80 3c 30 00 74 08 48 89 df e8 8c d5 0c 00 48 8b 3b 48 01 ef e8 61 63 07 00 48 89 c3 48 83 c3 20 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 64 d5 0c 00 4c 8b 23 4d 8d 7c 24
RSP: 0018:ffff8881ea72fc60 EFLAGS: 00010002
RAX: 0000000000000004 RBX: 0000000000000020 RCX: ffff8881f32fee40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffe8ffff638000 R08: ffffffff818ec60b R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff88823fe9f5c0
R13: 0000607e08838000 R14: dffffc0000000000 R15: ffffe8ffff638000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555572b384a8 CR3: 00000001d5683000 CR4: 00000000003406b0
DR0: 0000400000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	e8 03 42 80 3c       	call   0x3c804208
   5:	30 00                	xor    %al,(%rax)
   7:	74 08                	je     0x11
   9:	48 89 df             	mov    %rbx,%rdi
   c:	e8 8c d5 0c 00       	call   0xcd59d
  11:	48 8b 3b             	mov    (%rbx),%rdi
  14:	48 01 ef             	add    %rbp,%rdi
  17:	e8 61 63 07 00       	call   0x7637d
  1c:	48 89 c3             	mov    %rax,%rbx
  1f:	48 83 c3 20          	add    $0x20,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 64 d5 0c 00       	call   0xcd59d
  39:	4c 8b 23             	mov    (%rbx),%r12
  3c:	4d                   	rex.WRB
  3d:	8d                   	.byte 0x8d
  3e:	7c 24                	jl     0x64