Zheyu Ma 6510e80a0b isdn: mISDN: Fix sleeping function called from invalid context ... The driver can call card->isac.release() function from an atomic context. Fix this by calling this function after releasing the lock. The following log reveals it: [ 44.168226 ] BUG: sleeping function called from invalid context at kernel/workqueue.c:3018 [ 44.168941 ] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5475, name: modprobe [ 44.169574 ] INFO: lockdep is turned off. [ 44.169899 ] irq event stamp: 0 [ 44.170160 ] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [ 44.170627 ] hardirqs last disabled at (0): [<ffffffff814209ed>] copy_process+0x132d/0x3e00 [ 44.171240 ] softirqs last enabled at (0): [<ffffffff81420a1a>] copy_process+0x135a/0x3e00 [ 44.171852 ] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 44.172318 ] Preemption disabled at: [ 44.172320 ] [<ffffffffa009b0a9>] nj_release+0x69/0x500 [netjet] [ 44.174441 ] Call Trace: [ 44.174630 ] dump_stack_lvl+0xa8/0xd1 [ 44.174912 ] dump_stack+0x15/0x17 [ 44.175166 ] ___might_sleep+0x3a2/0x510 [ 44.175459 ] ? nj_release+0x69/0x500 [netjet] [ 44.175791 ] __might_sleep+0x82/0xe0 [ 44.176063 ] ? start_flush_work+0x20/0x7b0 [ 44.176375 ] start_flush_work+0x33/0x7b0 [ 44.176672 ] ? trace_irq_enable_rcuidle+0x85/0x170 [ 44.177034 ] ? kasan_quarantine_put+0xaa/0x1f0 [ 44.177372 ] ? kasan_quarantine_put+0xaa/0x1f0 [ 44.177711 ] __flush_work+0x11a/0x1a0 [ 44.177991 ] ? flush_work+0x20/0x20 [ 44.178257 ] ? lock_release+0x13c/0x8f0 [ 44.178550 ] ? __kasan_check_write+0x14/0x20 [ 44.178872 ] ? do_raw_spin_lock+0x148/0x360 [ 44.179187 ] ? read_lock_is_recursive+0x20/0x20 [ 44.179530 ] ? __kasan_check_read+0x11/0x20 [ 44.179846 ] ? do_raw_spin_unlock+0x55/0x900 [ 44.180168 ] ? ____kasan_slab_free+0x116/0x140 [ 44.180505 ] ? _raw_spin_unlock_irqrestore+0x41/0x60 [ 44.180878 ] ? skb_queue_purge+0x1a3/0x1c0 [ 44.181189 ] ? kfree+0x13e/0x290 [ 44.181438 ] flush_work+0x17/0x20 [ 44.181695 ] mISDN_freedchannel+0xe8/0x100 [ 44.182006 ] isac_release+0x210/0x260 [mISDNipac] [ 44.182366 ] nj_release+0xf6/0x500 [netjet] [ 44.182685 ] nj_remove+0x48/0x70 [netjet] [ 44.182989 ] pci_device_remove+0xa9/0x250 Signed-off-by: Zheyu Ma <zheyuma97@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2021-10-09 13:42:51 +01:00
..
avmfritz.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
hfc_multi.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
hfc_multi_8xx.h	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
hfc_pci.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153	2019-05-30 11:26:32 -07:00
hfcmulti.c	mISDN: Use DEFINE_SPINLOCK() for spinlock	2021-03-30 13:34:42 -07:00
hfcpci.c	mISDN: fix possible use-after-free in HFC_cleanup()	2021-05-11 16:12:46 -07:00
hfcsusb.c	isdn: mISDN: correctly handle ph_info allocation failure in hfcsusb_ph_info	2021-05-13 18:32:23 +02:00
hfcsusb.h	isdn: hfcsusb: Spelling and grammar fixes	2019-10-28 13:42:36 -07:00
iohelper.h	isdn: remove extra spaces in the header file	2021-03-11 18:23:55 -08:00
ipac.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176	2019-05-30 11:29:19 -07:00
isar.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176	2019-05-30 11:29:19 -07:00
isdnhdlc.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
isdnhdlc.h	isdn: deprecate non-mISDN drivers	2019-06-02 17:48:58 -07:00
Kconfig	isdn: Fix Kconfig indentation	2019-11-20 12:30:47 -08:00
Makefile	isdn: hdlc: move into mISDN	2019-05-31 11:13:10 +02:00
mISDNinfineon.c	isdn: mISDNinfineon: check/cleanup ioremap failure correctly in setup_io	2021-05-13 18:32:06 +02:00
mISDNipac.c	mISDN: fix crash in fritzpci	2021-03-11 18:23:13 -08:00
mISDNisar.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
netjet.c	isdn: mISDN: Fix sleeping function called from invalid context	2021-10-09 13:42:51 +01:00
netjet.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176	2019-05-30 11:29:19 -07:00
speedfax.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176	2019-05-30 11:29:19 -07:00
w6692.c	Printk changes for 5.5	2019-11-25 19:40:40 -08:00
w6692.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176	2019-05-30 11:29:19 -07:00