IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
PGD 800000022c92f067 P4D 800000022c92f067 PUD 22cd54067 PMD 0 
Oops: 0002 [#1] SMP PTI
CPU: 1 PID: 3033 Comm: syz-executor.0 Not tainted 4.19.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:dtInsertEntry.isra.5+0x514/0x530 fs/jfs/jfs_dtree.c:4019
Code: 98 41 83 ff 0d 41 b9 0d 00 00 00 48 c7 45 80 00 00 00 00 45 0f 4e cf 48 89 85 68 ff ff ff e9 8a fc ff ff 48 8b 85 70 ff ff ff <c6> 40 08 ff e9 e1 fd ff ff e8 8e 8d c8 ff 66 66 2e 0f 1f 84 00 00
RSP: 0018:ffffc90000fd79b0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88022ce20a60 RCX: ffffffffffffffff
RDX: 0000000000000073 RSI: 000000000000000c RDI: 000000000000000b
RBP: ffffc90000fd7a50 R08: 0000000000000000 R09: 000000000000000d
R10: ffffc900027290aa R11: ffffc900027290a8 R12: ffff88022e7d20e8
R13: 000000000000000d R14: 0000000000000000 R15: 0000000000000000
FS:  00007f45b0d846c0(0000) GS:ffff880237b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 000000022b79e000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 dtInsert+0x105/0x230 fs/jfs/jfs_dtree.c:899
 jfs_create+0x279/0x360 fs/jfs/namei.c:150
 lookup_open+0x2cd/0x8a0 fs/namei.c:3234
 do_last fs/namei.c:3324 [inline]
 path_openat+0x4db/0xc10 fs/namei.c:3534
 do_filp_open+0x8e/0x100 fs/namei.c:3564
 do_sys_open+0x17d/0x210 fs/open.c:1063
 __do_sys_openat fs/open.c:1090 [inline]
 __se_sys_openat fs/open.c:1084 [inline]
 __x64_sys_openat+0x1b/0x20 fs/open.c:1084
 do_syscall_64+0x69/0x170 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f45b1202e69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f45b0d840c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f45b1330f80 RCX: 00007f45b1202e69
RDX: 000000000000275a RSI: 0000000020000080 RDI: ffffffffffffff9c
RBP: 00007f45b124f47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007f45b1330f80 R15: 00007fff72cf29c8
Modules linked in:
CR2: 0000000000000008
---[ end trace 0a6dd6fc277c5233 ]---
RIP: 0010:dtInsertEntry.isra.5+0x514/0x530 fs/jfs/jfs_dtree.c:4019
Code: 98 41 83 ff 0d 41 b9 0d 00 00 00 48 c7 45 80 00 00 00 00 45 0f 4e cf 48 89 85 68 ff ff ff e9 8a fc ff ff 48 8b 85 70 ff ff ff <c6> 40 08 ff e9 e1 fd ff ff e8 8e 8d c8 ff 66 66 2e 0f 1f 84 00 00
RSP: 0018:ffffc90000fd79b0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88022ce20a60 RCX: ffffffffffffffff
RDX: 0000000000000073 RSI: 000000000000000c RDI: 000000000000000b
RBP: ffffc90000fd7a50 R08: 0000000000000000 R09: 000000000000000d
R10: ffffc900027290aa R11: ffffc900027290a8 R12: ffff88022e7d20e8
R13: 000000000000000d R14: 0000000000000000 R15: 0000000000000000
FS:  00007f45b0d846c0(0000) GS:ffff880237b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 000000022b79e000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	98                   	cwtl
   1:	41 83 ff 0d          	cmp    $0xd,%r15d
   5:	41 b9 0d 00 00 00    	mov    $0xd,%r9d
   b:	48 c7 45 80 00 00 00 	movq   $0x0,-0x80(%rbp)
  12:	00
  13:	45 0f 4e cf          	cmovle %r15d,%r9d
  17:	48 89 85 68 ff ff ff 	mov    %rax,-0x98(%rbp)
  1e:	e9 8a fc ff ff       	jmp    0xfffffcad
  23:	48 8b 85 70 ff ff ff 	mov    -0x90(%rbp),%rax
* 2a:	c6 40 08 ff          	movb   $0xff,0x8(%rax) <-- trapping instruction
  2e:	e9 e1 fd ff ff       	jmp    0xfffffe14
  33:	e8 8e 8d c8 ff       	call   0xffc88dc6
  38:	66                   	data16
  39:	66                   	data16
  3a:	2e                   	cs
  3b:	0f                   	.byte 0xf
  3c:	1f                   	(bad)
  3d:	84 00                	test   %al,(%rax)