usb 3-1: dvb_usb_v2: could not submit urb no. 0 - get them all back
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000061: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000308-0x000000000000030f]
CPU: 1 UID: 0 PID: 15743 Comm: syz.7.3121 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
RIP: 0010:ec168_streaming_ctrl+0x73/0x210 drivers/media/usb/dvb-usb-v2/ec168.c:312
Code: c7 40 04 00 00 f3 f3 65 48 8b 05 b0 63 60 0d 48 89 44 24 58 31 c0 e8 9c a4 b3 f9 49 8d bc 24 08 03 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 77 01 00 00 4d 8b a4 24 08 03 00 00 48 b8 00
RSP: 0018:ffffc9000adafac0 EFLAGS: 00010202
RAX: 0000000000000061 RBX: 0000000000000001 RCX: ffffc90010c03000
RDX: 0000000000080000 RSI: ffffffff885adc64 RDI: 0000000000000308
RBP: 1ffff920015b5f58 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc9000adaf68f R11: 0000000000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffff920015b5f6e R15: ffff888035c84000
FS:  00007f1b121ad6c0(0000) GS:ffff88812256c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c49919d CR3: 000000007e721000 CR4: 00000000003526f0
DR0: 0000000000000010 DR1: 00000000fffffffd DR2: 400000000001001d
DR3: fffffffffffffff6 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dvb_usb_start_feed+0xa03/0xef0 drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:308
 dmx_ts_feed_start_filtering+0xf6/0x220 drivers/media/dvb-core/dvb_demux.c:747
 dvb_dmxdev_start_feed+0x273/0x3f0 drivers/media/dvb-core/dmxdev.c:658
 dvb_dmxdev_filter_start+0x1b6/0xdd0 drivers/media/dvb-core/dmxdev.c:769
 dvb_dmxdev_pes_filter_set drivers/media/dvb-core/dmxdev.c:985 [inline]
 dvb_demux_do_ioctl+0xe64/0x1200 drivers/media/dvb-core/dmxdev.c:1099
 dvb_usercopy+0x167/0x340 drivers/media/dvb-core/dvbdev.c:996
 dvb_demux_ioctl+0x29/0x40 drivers/media/dvb-core/dmxdev.c:1208
 vfs_ioctl fs/ioctl.c:52 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl fs/ioctl.c:584 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:584
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x7b0 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1b113a94d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1b121ad028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1b11625fa0 RCX: 00007f1b113a94d9
RDX: 0000200000000100 RSI: 0000000040146f2c RDI: 0000000000000004
RBP: 00007f1b1143804e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1b11626038 R14: 00007f1b11625fa0 R15: 00007ffd186b9f98
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ec168_streaming_ctrl+0x73/0x210 drivers/media/usb/dvb-usb-v2/ec168.c:312
Code: c7 40 04 00 00 f3 f3 65 48 8b 05 b0 63 60 0d 48 89 44 24 58 31 c0 e8 9c a4 b3 f9 49 8d bc 24 08 03 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 77 01 00 00 4d 8b a4 24 08 03 00 00 48 b8 00
RSP: 0018:ffffc9000adafac0 EFLAGS: 00010202
RAX: 0000000000000061 RBX: 0000000000000001 RCX: ffffc90010c03000
RDX: 0000000000080000 RSI: ffffffff885adc64 RDI: 0000000000000308
RBP: 1ffff920015b5f58 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc9000adaf68f R11: 0000000000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffff920015b5f6e R15: ffff888035c84000
FS:  00007f1b121ad6c0(0000) GS:ffff88812256c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c49919d CR3: 000000007e721000 CR4: 00000000003526f0
DR0: 0000000000000010 DR1: 00000000fffffffd DR2: 400000000001001d
DR3: fffffffffffffff6 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c7 40 04 00 00 f3 f3 	movl   $0xf3f30000,0x4(%rax)
   7:	65 48 8b 05 b0 63 60 	mov    %gs:0xd6063b0(%rip),%rax        # 0xd6063bf
   e:	0d
   f:	48 89 44 24 58       	mov    %rax,0x58(%rsp)
  14:	31 c0                	xor    %eax,%eax
  16:	e8 9c a4 b3 f9       	call   0xf9b3a4b7
  1b:	49 8d bc 24 08 03 00 	lea    0x308(%r12),%rdi
  22:	00
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	0f 85 77 01 00 00    	jne    0x1ac
  35:	4d 8b a4 24 08 03 00 	mov    0x308(%r12),%r12
  3c:	00
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8