Hi, On Friday 15 April 2016 18:30:32 Mikulas Patocka wrote: > Hi > > The patch 23272a6754b81ff6503e09c743bb4ceeeab39997 (nbd: Remove signal > usage) triggers a warning in nbd when the network block device is unloaded > - WARN_ON_ONCE(in_irq() || irqs_disabled()) in the function > __local_bh_enable_ip. The reason for the warning is that the function > kernel_sock_shutdown is called with interrupts disabled.
Thanks for reporting. Will post a patch soon. Best Regards, Markus > > block nbd0: NBD_DISCONNECT > block nbd0: shutting down socket > ------------[ cut here ]------------ > WARNING: CPU: 10 PID: 11939 at kernel/softirq.c:150 > __local_bh_enable_ip+0x66/0x90 > Call Trace: > [<ffffffff8122dde3>] ? dump_stack+0x46/0x63 > [<ffffffff81050f57>] ? __warn+0xe7/0x100 > [<ffffffff810555f6>] ? __local_bh_enable_ip+0x66/0x90 > [<ffffffff813e2ddf>] ? inet_shutdown+0x3f/0x120 > [<ffffffffa00693b0>] ? sock_shutdown+0x40/0x80 [nbd] > [<ffffffffa006a228>] ? __nbd_ioctl+0x5b8/0xa40 [nbd] > [<ffffffffa19cc169>] ? soft_cursor+0x169/0x1e6 [softcursor] > [<ffffffffa19e37ed>] ? bit_cursor+0x59d/0x5d0 [bitblit] > [<ffffffffa19e8801>] ? cursor_timer_handler+0x11/0x40 [fbcon] > [<ffffffff8108dd6d>] ? up+0xd/0x50 > [<ffffffff81092ba6>] ? console_unlock+0x216/0x580 > [<ffffffff8108c168>] ? remove_wait_queue+0x18/0x60 > [<ffffffff812a6dca>] ? n_tty_write+0x24a/0x460 > [<ffffffff811f7cec>] ? security_capable+0x3c/0x50 > [<ffffffffa006a717>] ? nbd_ioctl+0x67/0x99 [nbd] > [<ffffffff8121d2d9>] ? blkdev_ioctl+0x649/0xa70 > [<ffffffff81160c2e>] ? __vfs_write+0x1e/0xe0 > [<ffffffff811789c2>] ? dput+0x42/0x2b0 > [<ffffffff81199e14>] ? block_ioctl+0x34/0x40 > [<ffffffff81174806>] ? do_vfs_ioctl+0x96/0x5b0 > [<ffffffff81161c31>] ? vfs_write+0x131/0x190 > [<ffffffff81174db1>] ? SyS_ioctl+0x91/0xa0 > [<ffffffff81402e1f>] ? entry_SYSCALL_64_fastpath+0x17/0x93 > ---[ end trace 1956420c2e5f102b ]--- > block nbd0: Receive control failed (result -32) > > Mikulas > -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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