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linux-stable/drivers/net/ieee802154
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YueHaibing de166bbe86 ieee802154: hwsim: unregister hw while hwsim_subscribe_all_others fails 
KASAN report this:

kernel BUG at net/mac802154/main.c:130!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 0 PID: 19932 Comm: modprobe Not tainted 5.1.0-rc6+ #22
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.3-0-ge2fc41e-prebuilt.qemu-project.org 04/01/2014
RIP: 0010:ieee802154_free_hw+0x2a/0x30 [mac802154]
Code: 55 48 8d 57 38 48 89 e5 53 48 89 fb 48 8b 47 38 48 39 c2 75 15 48 8d 7f 48 e8 82 85 16 e1 48 8b 7b 28 e8 f9 ef 83 e2 5b 5d c3 <0f> 0b 0f 1f 40 00 55 48 89 e5 53 48 89 fb 0f b6 86 80 00 00 00 88
RSP: 0018:ffffc90001c7b9f0 EFLAGS: 00010206
RAX: ffff88822df3aa80 RBX: ffff88823143d5c0 RCX: 0000000000000002
RDX: ffff88823143d5f8 RSI: ffff88822b1fabc0 RDI: ffff88823143d5c0
RBP: ffffc90001c7b9f8 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000fffffff4
R13: ffff88822dea4f50 R14: ffff88823143d7c0 R15: 00000000fffffff4
FS: 00007ff52e999540(0000) GS:ffff888237a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdc06dba768 CR3: 000000023160a000 CR4: 00000000000006f0
Call Trace:
 hwsim_add_one+0x2dd/0x540 [mac802154_hwsim]
 hwsim_probe+0x2f/0xb0 [mac802154_hwsim]
 platform_drv_probe+0x3a/0x90
 ? driver_sysfs_add+0x79/0xb0
 really_probe+0x1d4/0x2d0
 driver_probe_device+0x50/0xf0
 device_driver_attach+0x54/0x60
 __driver_attach+0x7e/0xd0
 ? device_driver_attach+0x60/0x60
 bus_for_each_dev+0x68/0xc0
 driver_attach+0x19/0x20
 bus_add_driver+0x15e/0x200
 driver_register+0x5b/0xf0
 __platform_driver_register+0x31/0x40
 hwsim_init_module+0x74/0x1000 [mac802154_hwsim]
 ? 0xffffffffa00e9000
 do_one_initcall+0x6c/0x3cc
 ? kmem_cache_alloc_trace+0x248/0x3b0
 do_init_module+0x5b/0x1f1
 load_module+0x1db1/0x2690
 ? m_show+0x1d0/0x1d0
 __do_sys_finit_module+0xc5/0xd0
 __x64_sys_finit_module+0x15/0x20
 do_syscall_64+0x6b/0x1d0
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7ff52e4a2839
Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 1f f6 2c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffffa7b3c08 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 00005647560a2a00 RCX: 00007ff52e4a2839
RDX: 0000000000000000 RSI: 00005647547f3c2e RDI: 0000000000000003
RBP: 00005647547f3c2e R08: 0000000000000000 R09: 00005647560a2a00
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 00005647560a2c10 R14: 0000000000040000 R15: 00005647560a2a00
Modules linked in: mac802154_hwsim(+) mac802154 [last unloaded: mac802154_hwsim]

In hwsim_add_one, if hwsim_subscribe_all_others fails, we
should call ieee802154_unregister_hw to free resources.

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: f25da51fdc ("ieee802154: hwsim: add replacement for fakelb")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
2019-05-04 20:44:39 +02:00
..
adf7242.c net: ieee802154: fix a potential NULL pointer dereference 2019-03-13 10:07:53 +01:00
at86rf230.c ieee802154: at86rf230: convert to DEFINE_SHOW_ATTRIBUTE 2018-12-10 12:05:20 -08:00
at86rf230.h at86rf230: add debugfs support 2015-09-17 13:20:05 +02:00
atusb.c net: ieee802154: atusb: Replace GFP_ATOMIC with GFP_KERNEL in atusb_probe 2018-04-23 20:56:23 +02:00
atusb.h ieee802154: atusb: Driver for Busware HUL dongle 2017-09-20 13:37:16 +02:00
ca8210.c ieee802154: ca8210: fix possible u8 overflow in ca8210_rx_done 2018-12-11 09:33:11 +01:00
cc2520.c ieee802154: cc2520: switch from BUG_ON() to WARN_ON() on problem 2017-11-06 16:27:55 +01:00
fakelb.c ieee802154: fakelb: add deprecated msg while probe 2018-08-06 11:21:15 +02:00
Kconfig ieee802154: hwsim: add replacement for fakelb 2018-08-06 11:21:15 +02:00
mac802154_hwsim.c ieee802154: hwsim: unregister hw while hwsim_subscribe_all_others fails 2019-05-04 20:44:39 +02:00
mac802154_hwsim.h ieee802154: hwsim: add replacement for fakelb 2018-08-06 11:21:15 +02:00
Makefile ieee802154: hwsim: add replacement for fakelb 2018-08-06 11:21:15 +02:00
mcr20a.c net: ieee802154: fix missing checks for regmap_update_bits 2019-04-24 20:15:15 +02:00
mcr20a.h ieee802154: Add NXP MCR20A IEEE 802.15.4 transceiver driver 2018-02-21 09:08:39 +01:00
mrf24j40.c ieee802154: mrf24j40: fix incorrect mask in mrf24j40_stop 2017-11-06 16:27:55 +01:00