524155 pages RAM
0 pages HighMem/MovableOnly
209484 pages reserved
0 pages cma reserved
------------[ cut here ]------------
!PageLargeKmalloc(page)
WARNING: mm/slub.c:6793 at free_large_kmalloc+0x96/0xd0 mm/slub.c:6793, CPU#1: kworker/1:1/17203
Modules linked in:
CPU: 1 UID: 0 PID: 17203 Comm: kworker/1:1 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: events request_module_async
RIP: 0010:free_large_kmalloc+0x96/0xd0 mm/slub.c:6793
Code: 28 90 0f 0b 90 80 3d a1 7b 3c 0e 00 0f 84 b3 e1 c0 fe 48 8b 74 24 28 48 89 ef e8 e5 0d 0c 00 b8 00 f0 ff ff 45 31 ed eb be 90 <0f> 0b 90 48 83 c4 08 48 89 df 48 c7 c6 c1 d0 c2 8d 5b 5d 41 5c 41
RSP: 0018:ffffc9000310f7b0 EFLAGS: 00010293
RAX: 00000000000000f0 RBX: ffffea0001640c00 RCX: ffffffff81b8066e
RDX: 0000000000000000 RSI: ffff888059030000 RDI: ffffea0001640c00
RBP: ffff888059030000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000000 R12: ffff8880593d1d58
R13: ffff888071327800 R14: dffffc0000000000 R15: ffffed100b27a3ad
FS:  0000000000000000(0000) GS:ffff8880974e5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056437a22d0a0 CR3: 000000002530d000 CR4: 0000000000352ef0
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+0xf8/0x110 drivers/usb/core/urb.c:97
 usb_free_urb+0x1f/0x30 drivers/usb/core/urb.c:96
 em28xx_uninit_usb_xfer+0xf3/0x360 drivers/media/usb/em28xx/em28xx-core.c:833
 em28xx_alloc_urbs+0xb43/0xf60 drivers/media/usb/em28xx/em28xx-core.c:945
 em28xx_dvb_init drivers/media/usb/em28xx/em28xx-dvb.c:1519 [inline]
 em28xx_dvb_init.cold+0x197/0x6bc0 drivers/media/usb/em28xx/em28xx-dvb.c:1485
 em28xx_init_extension+0x13a/0x200 drivers/media/usb/em28xx/em28xx-core.c:1117
 request_module_async+0x61/0x80 drivers/media/usb/em28xx/em28xx-cards.c:3457
 process_one_work+0x9c2/0x1840 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x5da/0xe40 kernel/workqueue.c:3421
 kthread+0x3b3/0x730 kernel/kthread.c:463
 ret_from_fork+0x754/0xaf0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>