lkml.org 
[lkml]   [2017]   [Sep]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Date
    Subjectusb/sound/usx2y: warning in usb_stream_new/__alloc_pages_slowpath
    Hi!

    I've got the following report while fuzzing the kernel with syzkaller.

    On commit ebb2c2437d8008d46796902ff390653822af6cc4 (Sep 18).

    ------------[ cut here ]------------
    WARNING: CPU: 1 PID: 1846 at mm/page_alloc.c:3883
    __alloc_pages_slowpath+0x1ef2/0x2d70
    Modules linked in:
    CPU: 1 PID: 1846 Comm: kworker/1:2 Not tainted
    4.14.0-rc1-42251-gebb2c2437d80 #215
    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
    Workqueue: usb_hub_wq hub_event
    task: ffff8800643c18c0 task.stack: ffff88006b658000
    RIP: 0010:trace_reclaim_retry_zone ./include/trace/events/oom.h:31
    RIP: 0010:should_reclaim_retry mm/page_alloc.c:3783
    RIP: 0010:__alloc_pages_slowpath+0x1ef2/0x2d70 mm/page_alloc.c:4039
    RSP: 0018:ffff88006b65d938 EFLAGS: 00010246
    RAX: 00000000ffffa666 RBX: 00000000014000c0 RCX: 0000000000000000
    RDX: 0000000000000000 RSI: 0000000000000034 RDI: 000000000140c0c0
    RBP: ffff88006b65e088 R08: 0000000000000000 R09: fffffffffff00f88
    R10: 0000000000000000 R11: 0000000000000085 R12: ffff88006b65e130
    R13: ffff88006b65e270 R14: ffff88006b65e0f0 R15: 000000000140c0c0
    FS: 0000000000000000(0000) GS:ffff88006c900000(0000) knlGS:0000000000000000
    CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    CR2: 0000000020829000 CR3: 0000000063cce000 CR4: 00000000000006e0
    Call Trace:
    __alloc_pages_nodemask+0x921/0xf70 mm/page_alloc.c:4217
    alloc_pages_current+0xbb/0x1f0 mm/mempolicy.c:2035
    alloc_pages ./include/linux/gfp.h:505
    __get_free_pages+0x14/0x50 mm/page_alloc.c:4248
    usb_stream_new+0x50f/0x9f0 sound/usb/usx2y/usb_stream.c:214
    us122l_start+0xb0/0x250 sound/usb/usx2y/us122l.c:355
    us122l_create_card sound/usb/usx2y/us122l.c:502
    us122l_usb_probe sound/usb/usx2y/us122l.c:588
    snd_us122l_probe+0xa62/0x15d0 sound/usb/usx2y/us122l.c:623
    usb_probe_interface+0x35d/0x8e0 drivers/usb/core/driver.c:361
    really_probe drivers/base/dd.c:413
    driver_probe_device+0x610/0xa00 drivers/base/dd.c:557
    __device_attach_driver+0x230/0x290 drivers/base/dd.c:653
    bus_for_each_drv+0x161/0x210 drivers/base/bus.c:463
    __device_attach+0x26e/0x3d0 drivers/base/dd.c:710
    device_initial_probe+0x1f/0x30 drivers/base/dd.c:757
    bus_probe_device+0x1eb/0x290 drivers/base/bus.c:523
    device_add+0xd0b/0x1660 drivers/base/core.c:1835
    usb_set_configuration+0x104e/0x1870 drivers/usb/core/message.c:1932
    generic_probe+0x73/0xe0 drivers/usb/core/generic.c:174
    usb_probe_device+0xaf/0xe0 drivers/usb/core/driver.c:266
    really_probe drivers/base/dd.c:413
    driver_probe_device+0x610/0xa00 drivers/base/dd.c:557
    __device_attach_driver+0x230/0x290 drivers/base/dd.c:653
    bus_for_each_drv+0x161/0x210 drivers/base/bus.c:463
    __device_attach+0x26e/0x3d0 drivers/base/dd.c:710
    device_initial_probe+0x1f/0x30 drivers/base/dd.c:757
    bus_probe_device+0x1eb/0x290 drivers/base/bus.c:523
    device_add+0xd0b/0x1660 drivers/base/core.c:1835
    usb_new_device+0x7b8/0x1020 drivers/usb/core/hub.c:2457
    hub_port_connect drivers/usb/core/hub.c:4903
    hub_port_connect_change drivers/usb/core/hub.c:5009
    port_event drivers/usb/core/hub.c:5115
    hub_event+0x194d/0x3740 drivers/usb/core/hub.c:5195
    process_one_work+0xc7f/0x1db0 kernel/workqueue.c:2119
    worker_thread+0x221/0x1850 kernel/workqueue.c:2253
    kthread+0x3a1/0x470 kernel/kthread.c:231
    ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431
    Code: be 47 00 00 00 48 c7 c7 20 42 8b 85 c6 05 5e 35 99 05 01 e8 91
    1f cb ff 48 8b 8d d8 f8 ff ff 44 8b 9d 50 f9 ff ff e9 57 fc ff ff <0f>
    ff e9 79 e3 ff ff 0f ff c7 85 e8 f8 ff ff 00 00 00 00 89 d8
    ---[ end trace 78800971cbd5f94f ]---

    \
     
     \ /
      Last update: 2017-09-21 19:35    [W:5.315 / U:0.720 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site