BUG: kernel NULL pointer dereference, address: 0000000000000010
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 12 Comm: kworker/u4:1 Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: bat_events batadv_mcast_mla_update
RIP: 0010:find_stack lib/stackdepot.c:553 [inline]
RIP: 0010:stack_depot_save_flags+0x1b4/0x940 lib/stackdepot.c:618
Code: 00 31 f6 48 89 d5 4c 89 cb e8 48 2c c8 ff 49 89 d9 8b 5c 24 04 48 89 ea 4c 8b 44 24 08 45 85 e4 75 67 4d 8b 3f 49 39 d7 74 5c <45> 39 77 10 75 f2 45 39 4f 14 75 ec 31 c0 49 8b 0c c0 49 3b 4c c7
RSP: 0018:ffffc900001e7600 EFLAGS: 00010207
RAX: ffff88805e200000 RBX: 0000000000000001 RCX: 00000000008a33a0
RDX: ffff88805eaa33a0 RSI: 0000000000000003 RDI: 00000000d592118f
RBP: 00000000a8edfa6c R08: ffffc900001e7670 R09: 0000000000000009
R10: ffffc900001e7530 R11: ffffffff81ab2f20 R12: 0000000000000020
R13: 0000000000000009 R14: 000000004a38a33a R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000010 CR3: 000000001eb26000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kasan_save_stack mm/kasan/common.c:48 [inline]
 kasan_save_track+0x51/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x243/0x390 mm/slub.c:4325
 kmalloc_noprof include/linux/slab.h:901 [inline]
 batadv_mcast_mla_softif_get_ipv4 net/batman-adv/multicast.c:404 [inline]
 batadv_mcast_mla_softif_get net/batman-adv/multicast.c:531 [inline]
 __batadv_mcast_mla_update net/batman-adv/multicast.c:911 [inline]
 batadv_mcast_mla_update+0xfad/0x4030 net/batman-adv/multicast.c:948
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
 worker_thread+0x870/0xd30 kernel/workqueue.c:3398
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
CR2: 0000000000000010
---[ end trace 0000000000000000 ]---
RIP: 0010:find_stack lib/stackdepot.c:553 [inline]
RIP: 0010:stack_depot_save_flags+0x1b4/0x940 lib/stackdepot.c:618
Code: 00 31 f6 48 89 d5 4c 89 cb e8 48 2c c8 ff 49 89 d9 8b 5c 24 04 48 89 ea 4c 8b 44 24 08 45 85 e4 75 67 4d 8b 3f 49 39 d7 74 5c <45> 39 77 10 75 f2 45 39 4f 14 75 ec 31 c0 49 8b 0c c0 49 3b 4c c7
RSP: 0018:ffffc900001e7600 EFLAGS: 00010207
RAX: ffff88805e200000 RBX: 0000000000000001 RCX: 00000000008a33a0
RDX: ffff88805eaa33a0 RSI: 0000000000000003 RDI: 00000000d592118f
RBP: 00000000a8edfa6c R08: ffffc900001e7670 R09: 0000000000000009
R10: ffffc900001e7530 R11: ffffffff81ab2f20 R12: 0000000000000020
R13: 0000000000000009 R14: 000000004a38a33a R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000010 CR3: 000000001eb26000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 31                	add    %dh,(%rcx)
   2:	f6 48 89 d5          	testb  $0xd5,-0x77(%rax)
   6:	4c 89 cb             	mov    %r9,%rbx
   9:	e8 48 2c c8 ff       	call   0xffc82c56
   e:	49 89 d9             	mov    %rbx,%r9
  11:	8b 5c 24 04          	mov    0x4(%rsp),%ebx
  15:	48 89 ea             	mov    %rbp,%rdx
  18:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1d:	45 85 e4             	test   %r12d,%r12d
  20:	75 67                	jne    0x89
  22:	4d 8b 3f             	mov    (%r15),%r15
  25:	49 39 d7             	cmp    %rdx,%r15
  28:	74 5c                	je     0x86
* 2a:	45 39 77 10          	cmp    %r14d,0x10(%r15) <-- trapping instruction
  2e:	75 f2                	jne    0x22
  30:	45 39 4f 14          	cmp    %r9d,0x14(%r15)
  34:	75 ec                	jne    0x22
  36:	31 c0                	xor    %eax,%eax
  38:	49 8b 0c c0          	mov    (%r8,%rax,8),%rcx
  3c:	49                   	rex.WB
  3d:	3b                   	.byte 0x3b
  3e:	4c                   	rex.WR
  3f:	c7                   	.byte 0xc7