Anders Roxell 646097940a serial: set suppress_bind_attrs flag only if builtin ... When the test 'CONFIG_DEBUG_TEST_DRIVER_REMOVE=y' is enabled, arch_initcall(pl011_init) came before subsys_initcall(default_bdi_init). devtmpfs gets killed because we try to remove a file and decrement the wb reference count before the noop_backing_device_info gets initialized. [ 0.332075] Serial: AMBA PL011 UART driver [ 0.485276] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 39, base_baud = 0) is a PL011 rev1 [ 0.502382] console [ttyAMA0] enabled [ 0.515710] Unable to handle kernel paging request at virtual address 0000800074c12000 [ 0.516053] Mem abort info: [ 0.516222] ESR = 0x96000004 [ 0.516417] Exception class = DABT (current EL), IL = 32 bits [ 0.516641] SET = 0, FnV = 0 [ 0.516826] EA = 0, S1PTW = 0 [ 0.516984] Data abort info: [ 0.517149] ISV = 0, ISS = 0x00000004 [ 0.517339] CM = 0, WnR = 0 [ 0.517553] [0000800074c12000] user address but active_mm is swapper [ 0.517928] Internal error: Oops: 96000004 [#1] PREEMPT SMP [ 0.518305] Modules linked in: [ 0.518839] CPU: 0 PID: 13 Comm: kdevtmpfs Not tainted 4.19.0-rc5-next-20180928-00002-g2ba39ab0cd01-dirty #82 [ 0.519307] Hardware name: linux,dummy-virt (DT) [ 0.519681] pstate: 80000005 (Nzcv daif -PAN -UAO) [ 0.519959] pc : __destroy_inode+0x94/0x2a8 [ 0.520212] lr : __destroy_inode+0x78/0x2a8 [ 0.520401] sp : ffff0000098c3b20 [ 0.520590] x29: ffff0000098c3b20 x28: 00000000087a3714 [ 0.520904] x27: 0000000000002000 x26: 0000000000002000 [ 0.521179] x25: ffff000009583000 x24: 0000000000000000 [ 0.521467] x23: ffff80007bb52000 x22: ffff80007bbaa7c0 [ 0.521737] x21: ffff0000093f9338 x20: 0000000000000000 [ 0.522033] x19: ffff80007bbb05d8 x18: 0000000000000400 [ 0.522376] x17: 0000000000000000 x16: 0000000000000000 [ 0.522727] x15: 0000000000000400 x14: 0000000000000400 [ 0.523068] x13: 0000000000000001 x12: 0000000000000001 [ 0.523421] x11: 0000000000000000 x10: 0000000000000970 [ 0.523749] x9 : ffff0000098c3a60 x8 : ffff80007bbab190 [ 0.524017] x7 : ffff80007bbaa880 x6 : 0000000000000c88 [ 0.524305] x5 : ffff0000093d96c8 x4 : 61c8864680b583eb [ 0.524567] x3 : ffff0000093d6180 x2 : ffffffffffffffff [ 0.524872] x1 : 0000800074c12000 x0 : 0000800074c12000 [ 0.525207] Process kdevtmpfs (pid: 13, stack limit = 0x(____ptrval____)) [ 0.525529] Call trace: [ 0.525806] __destroy_inode+0x94/0x2a8 [ 0.526108] destroy_inode+0x34/0x88 [ 0.526370] evict+0x144/0x1c8 [ 0.526636] iput+0x184/0x230 [ 0.526871] dentry_unlink_inode+0x118/0x130 [ 0.527152] d_delete+0xd8/0xe0 [ 0.527420] vfs_unlink+0x240/0x270 [ 0.527665] handle_remove+0x1d8/0x330 [ 0.527875] devtmpfsd+0x138/0x1c8 [ 0.528085] kthread+0x14c/0x158 [ 0.528291] ret_from_fork+0x10/0x18 [ 0.528720] Code: 92800002 aa1403e0 d538d081 8b010000 (c85f7c04) [ 0.529367] ---[ end trace 5a3dee47727f877c ]--- Rework to set suppress_bind_attrs flag to avoid removing the device when CONFIG_DEBUG_TEST_DRIVER_REMOVE=y. This applies for pic32_uart and xilinx_uartps as well. Co-developed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-11-09 09:07:17 -08:00
..
hvc	tty: hvc: hvc_write() fix break condition	2018-09-10 18:04:31 +02:00
ipwireless	ipwireless: switch to ->[sg]et_serial()	2018-10-13 00:50:31 -04:00
serdev	serdev: add dev_pm_domain_attach|detach()	2018-07-15 12:23:53 +02:00
serial	serial: set suppress_bind_attrs flag only if builtin	2018-11-09 09:07:17 -08:00
vt	drm pull for 4.20-rc1	2018-10-28 17:49:53 -07:00
amiserial.c	kill TIOCSERGSTRUCT	2018-10-13 00:50:53 -04:00
cyclades.c	cyclades: switch to ->[sg]et_serial()	2018-10-13 00:50:30 -04:00
ehv_bytechan.c	tty: Convert to using %pOFn instead of device_node.name	2018-09-18 16:07:25 +02:00
goldfish.c	headers: separate linux/mod_devicetable.h from linux/platform_device.h	2018-07-07 17:52:26 +02:00
isicom.c	isicom: switch to ->[sg]et_serial()	2018-10-13 00:50:31 -04:00
Kconfig	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2018-04-09 09:04:10 -07:00
Makefile
mips_ejtag_fdc.c
moxa.c	moxa: switch to ->[sg]et_serial()	2018-10-13 00:50:32 -04:00
moxa.h
mxser.c	mxser: switch to ->[sg]et_serial()	2018-10-13 00:50:32 -04:00
mxser.h
n_gsm.c	change semantics of ldisc ->compat_ioctl()	2018-10-13 00:50:53 -04:00
n_hdlc.c
n_null.c
n_r3964.c	change semantics of ldisc ->compat_ioctl()	2018-10-13 00:50:53 -04:00
n_tracerouter.c
n_tracesink.c
n_tracesink.h
n_tty.c	tty: wipe buffer if not echoing data	2018-10-11 19:50:00 +02:00
nozomi.c	tty/nozomi: fix inconsistent indentation	2018-04-25 14:54:26 +02:00
pty.c	pty: fix compat ioctls	2018-10-13 00:50:51 -04:00
rocket_int.h
rocket.c	tty: rocket: Fix possible buffer overwrite on register_PCI	2018-08-02 10:11:32 +02:00
rocket.h
synclink_gt.c	synclink_gt(): fix compat_ioctl()	2018-10-13 00:50:52 -04:00
synclink.c	synclink: reduce pointless checks in ->ioctl()	2018-10-13 00:50:43 -04:00
synclinkmp.c	synclink: reduce pointless checks in ->ioctl()	2018-10-13 00:50:43 -04:00
sysrq.c	signal: send_sig_all no longer needs SEND_SIG_FORCED	2018-09-11 21:19:07 +02:00
tty_audit.c	audit: eliminate audit_enabled magic number comparison	2018-06-19 10:43:55 -04:00
tty_baudrate.c	tty: support CIBAUD without BOTHER	2018-07-16 12:00:43 +02:00
tty_buffer.c	tty: wipe buffer.	2018-10-11 19:50:00 +02:00
tty_io.c	TTY/Serial patches for 4.20-rc1	2018-10-29 10:42:20 -07:00
tty_ioctl.c	move compat handling of tty ioctls to tty_compat_ioctl()	2018-09-14 11:12:17 -04:00
tty_jobctrl.c
tty_ldisc.c	proc: introduce proc_create_seq{,_data}	2018-05-16 07:23:35 +02:00
tty_ldsem.c	atomic/tty: Fix up atomic abuse in ldsem	2018-06-28 21:07:55 +09:00
tty_mutex.c
tty_port.c	tty_port: Remove incorrect whitespace after comments	2018-09-18 16:07:25 +02:00
vcc.c