524155 pages RAM
0 pages HighMem/MovableOnly
210589 pages reserved
0 pages cma reserved
------------[ cut here ]------------
!PageLargeKmalloc(page)
WARNING: mm/slub.c:6471 at free_large_kmalloc+0xbf/0x100 mm/slub.c:6471, CPU#0: kworker/0:0/29435
Modules linked in:
CPU: 0 UID: 0 PID: 29435 Comm: kworker/0:0 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+0xbf/0x100 mm/slub.c:6471
Code: 28 90 0f 0b 90 80 3d 79 28 5b 0e 00 0f 84 f7 f1 ba fe 48 8b 74 24 28 48 89 ef e8 ec fe 0b 00 b8 00 f0 ff ff 45 31 ed eb 9d 90 <0f> 0b 90 48 83 c4 08 48 89 df 48 c7 c6 6b 00 f4 8d 5b 5d 41 5c 41
RSP: 0000:ffffc900001b7810 EFLAGS: 00010293
RAX: 00000000000000f0 RBX: ffffea0001c75800 RCX: 000000000000002e
RDX: 0000000000000000 RSI: ffff888071d60000 RDI: ffffea0001c75800
RBP: ffff888071d60000 R08: 0000000000000005 R09: 0000000000000000
R10: ffffffffffffffff R11: dffffc0000000000 R12: ffff8880515e9e98
R13: ffff88804c985600 R14: dffffc0000000000 R15: ffffed100a2bd3d5
FS:  0000000000000000(0000) GS:ffff8880970e8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5bb76d1140 CR3: 0000000078e3a000 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:96
 usb_free_urb+0x1f/0x30 drivers/usb/core/urb.c:95
 em28xx_uninit_usb_xfer+0xf3/0x360 drivers/media/usb/em28xx/em28xx-core.c:964
 em28xx_alloc_urbs+0xb43/0xf60 drivers/media/usb/em28xx/em28xx-core.c:1076
 em28xx_dvb_init drivers/media/usb/em28xx/em28xx-dvb.c:1734 [inline]
 em28xx_dvb_init.cold+0x1f2/0x7391 drivers/media/usb/em28xx/em28xx-dvb.c:1698
 em28xx_init_extension+0x13a/0x200 drivers/media/usb/em28xx/em28xx-core.c:1248
 request_module_async+0x61/0x80 drivers/media/usb/em28xx/em28xx-cards.c:3660
 process_one_work+0xa0e/0x1980 kernel/workqueue.c:3302
 process_scheduled_works kernel/workqueue.c:3385 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3466
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>