Total swap = 124996kB
524155 pages RAM
0 pages HighMem/MovableOnly
209477 pages reserved
0 pages cma reserved
------------[ cut here ]------------
WARNING: CPU: 3 PID: 6045 at mm/slub.c:4790 free_large_kmalloc+0x114/0x180 mm/slub.c:4790
Modules linked in:
CPU: 3 UID: 0 PID: 6045 Comm: kworker/3:3 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events request_module_async
RIP: 0010:free_large_kmalloc+0x114/0x180 mm/slub.c:4790
Code: 00 00 00 48 89 df e8 eb c9 13 00 e8 56 d1 ad ff 9c 58 f6 c4 02 75 6f fb eb 83 48 c7 c6 b8 7a c9 8d e8 a0 a4 ed ff 90 0f 0b 90 <0f> 0b 90 48 c7 c6 fe 92 e3 8d 48 89 df 5b 5d 41 5c 41 5d e9 84 a4
RSP: 0018:ffffc900039e7840 EFLAGS: 00010293
RAX: 04fff00000000000 RBX: ffffea0001b37000 RCX: ffffffff816c862e
RDX: 00000000000000f0 RSI: ffff88806cdc0000 RDI: ffffea0001b37000
RBP: ffff88806cdc0000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000000 R12: ffff88805f5b5d58
R13: ffff88805f769600 R14: dffffc0000000000 R15: 0000000000000200
FS:  0000000000000000(0000) GS:ffff8880977c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f5c4fba8 CR3: 0000000053071000 CR4: 0000000000352ef0
DR0: ffffffffffffffff DR1: 000000000000008d DR2: 0000000020000008
DR3: 0000000000007fff DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 urb_destroy drivers/usb/core/urb.c:25 [inline]
 kref_put include/linux/kref.h:65 [inline]
 usb_free_urb.part.0+0xe5/0x100 drivers/usb/core/urb.c:97
 usb_free_urb+0x1f/0x30 drivers/usb/core/urb.c:96
 em28xx_uninit_usb_xfer+0x119/0x3b0 drivers/media/usb/em28xx/em28xx-core.c:833
 em28xx_alloc_urbs+0xb09/0x1050 drivers/media/usb/em28xx/em28xx-core.c:945
 em28xx_dvb_init drivers/media/usb/em28xx/em28xx-dvb.c:1519 [inline]
 em28xx_dvb_init+0x352/0x8350 drivers/media/usb/em28xx/em28xx-dvb.c:1485
 em28xx_init_extension+0x13a/0x200 drivers/media/usb/em28xx/em28xx-core.c:1117
 request_module_async+0x61/0x70 drivers/media/usb/em28xx/em28xx-cards.c:3457
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>