On 2023/9/27 0:39, Marco Pagani wrote:
> Register a minimal platform driver associated with the parent platform
> device used for testing to prevent a null-ptr-deref when try_module_get()
> is called by __fpga_bridge_get().
>
> Fixes: 9e6823481e5f ("fpga: add an initial KUnit suite for the FPGA Bridge")
> Reported-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
> Signed-off-by: Marco Pagani <marpagan@xxxxxxxxxx>
> ---
> drivers/fpga/tests/fpga-bridge-test.c | 18 +++++++++++++++++-
> 1 file changed, 17 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/fpga/tests/fpga-bridge-test.c b/drivers/fpga/tests/fpga-bridge-test.c
> index 1d258002cdd7..4bd4ecaa7e90 100644
> --- a/drivers/fpga/tests/fpga-bridge-test.c
> +++ b/drivers/fpga/tests/fpga-bridge-test.c
> @@ -13,6 +13,8 @@
> #include <linux/module.h>
> #include <linux/types.h>
>
> +#include "fpga-test-helpers.h"
> +
> struct bridge_stats {
> bool enable;
> };
> @@ -53,7 +55,7 @@ static struct bridge_ctx *register_test_bridge(struct kunit *test)
> ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
> KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
>
> - ctx->pdev = platform_device_register_simple("bridge_pdev", PLATFORM_DEVID_AUTO, NULL, 0);
> + ctx->pdev = platform_device_register_simple(TEST_PDEV_NAME, PLATFORM_DEVID_AUTO, NULL, 0);
> KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->pdev);
>
> ctx->bridge = fpga_bridge_register(&ctx->pdev->dev, "Fake FPGA bridge", &fake_bridge_ops,
> @@ -144,6 +146,18 @@ static void fpga_bridge_test_get_put_list(struct kunit *test)
> unregister_test_bridge(ctx_1);
> }
>
> +TEST_PLATFORM_DRIVER(test_platform_driver);
> +
> +static int fpga_bridge_test_suite_init(struct kunit_suite *suite)
> +{
> + return platform_driver_register(&test_platform_driver);
modprobe fpga-bridge-test and there is still a null-ptr-deref.
root@syzkaller:~# modprobe fpga-bridge-test
[ 33.870688] KTAP version 1
[ 33.870897] 1..1
[ 33.871947] ------------[ cut here ]------------
[ 33.872287] kobject: '(null)' (ffffffffa0241990): is not initialized,
yet kobject_get() is being called.
[ 33.873267] WARNING: CPU: 6 PID: 1860 at lib/kobject.c:637
kobject_get+0x98/0xe0
[ 33.873884] Modules linked in: fpga_bridge_test(+) fpga_bridge
[ 33.874368] CPU: 6 PID: 1860 Comm: modprobe Tainted: G
N 6.6.0-rc3+ #54
[ 33.875023] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.15.0-1 04/01/2014
[ 33.875700] RIP: 0010:kobject_get+0x98/0xe0
[ 33.876044] Code: 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03
80 3c 02 00 75 44 49 8b 34 24 4c 89 e2 48 c7 c7 20 63 ac 84 e8 38 fe 24
fd <0f> 0b eb a2 48 89 ef be 01 00 00 00 e8 d7 de a4 fe 4c 89 e0 5d 41
[ 33.877527] RSP: 0018:ffff88810df6f298 EFLAGS: 00010286
[ 33.877951] RAX: 0000000000000000 RBX: ffffffff848a3660 RCX:
0000000000000000
[ 33.878538] RDX: 0000000000000002 RSI: ffffffff847b4d40 RDI:
0000000000000001
[ 33.879100] RBP: ffff88810c83cd40 R08: 0000000000000001 R09:
ffffed1021bede12
[ 33.879687] R10: ffff88810df6f097 R11: 3a7463656a626f6b R12:
ffffffffa0241990
[ 33.880235] R13: ffff88810c83cd58 R14: ffffffffa0241990 R15:
ffff888106502dd8
[ 33.880790] FS: 00007f27dd761540(0000) GS:ffff888119f00000(0000)
knlGS:0000000000000000
[ 33.881437] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 33.881886] CR2: 00007ffc270848b8 CR3: 0000000106d73006 CR4:
0000000000770ee0
[ 33.882452] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 33.883001] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 33.883557] PKRU: 55555554
[ 33.883777] Call Trace:
[ 33.883975] <TASK>
[ 33.884151] ? __warn+0xc9/0x260
[ 33.884424] ? irq_work_queue+0x35/0x50
[ 33.884728] ? kobject_get+0x98/0xe0
[ 33.885010] ? report_bug+0x345/0x400
[ 33.885304] ? handle_bug+0x3c/0x70
[ 33.885602] ? exc_invalid_op+0x14/0x40
[ 33.885900] ? asm_exc_invalid_op+0x16/0x20
[ 33.886224] ? kobject_get+0x98/0xe0
[ 33.886518] ? kobject_get+0x98/0xe0
[ 33.886813] kobject_add_internal+0x9e/0x870
[ 33.887148] kobject_add+0x120/0x1f0
[ 33.887444] ? kset_create_and_add+0x160/0x160
[ 33.887796] ? __kmem_cache_alloc_node+0x1d2/0x350
[ 33.888171] ? _raw_spin_lock+0x87/0xe0
[ 33.888480] ? kobject_create_and_add+0x3c/0xb0
[ 33.888836] kobject_create_and_add+0x68/0xb0
[ 33.889183] module_add_driver+0x260/0x350
[ 33.889515] bus_add_driver+0x2c9/0x580
[ 33.889818] driver_register+0x133/0x460
[ 33.890128] kunit_run_tests+0xdb/0xef0
[ 33.890440] ? _raw_spin_lock_irqsave+0x8d/0xe0
[ 33.890802] ? __sched_text_end+0xa/0xa
[ 33.891108] ? _raw_spin_unlock_irqrestore+0x42/0x80
[ 33.891508] ? __kunit_test_suites_exit+0x80/0x80
[ 33.891875] ? set_track_prepare+0x8a/0xd0
[ 33.892192] ? get_object+0x70/0x70
[ 33.892479] ? alloc_inode+0x12a/0x1e0
[ 33.892780] ? new_inode+0x14/0x230
[ 33.893056] ? __debugfs_create_file+0xc8/0x5d0
[ 33.893424] ? __kunit_test_suites_init+0x73/0x140
[ 33.893804] ? kunit_module_notify+0x3ab/0x440
[ 33.894157] ? notifier_call_chain+0xbf/0x280
[ 33.894512] ? _raw_spin_lock_irqsave+0x8d/0xe0
[ 33.894873] ? __sched_text_end+0xa/0xa
[ 33.895178] ? projid_m_show+0x200/0x200
[ 33.895496] ? kasan_set_track+0x21/0x30
[ 33.895803] ? _raw_spin_lock+0x87/0xe0
[ 33.896101] ? _raw_spin_lock_bh+0xe0/0xe0
[ 33.896434] ? _raw_spin_lock+0x87/0xe0
[ 33.896733] ? __d_instantiate+0x1d5/0x3b0
[ 33.897055] ? alloc_inode+0x72/0x1e0
[ 33.897356] ? up_write+0x6d/0xa0
[ 33.897623] ? __debugfs_create_file+0x3b5/0x5d0
[ 33.897988] __kunit_test_suites_init+0xde/0x140
[ 33.898357] kunit_module_notify+0x3ab/0x440
[ 33.898701] ? __kunit_test_suites_init+0x140/0x140
[ 33.899084] ? preempt_count_add+0x79/0x150
[ 33.899428] notifier_call_chain+0xbf/0x280
[ 33.899757] ? kasan_quarantine_put+0x21/0x1a0
[ 33.900107] blocking_notifier_call_chain_robust+0xbb/0x140
[ 33.900549] ? notifier_call_chain+0x280/0x280
[ 33.900895] ? 0xffffffffa0238000
[ 33.901158] load_module+0x4af0/0x67d0
[ 33.901471] ? module_frob_arch_sections+0x20/0x20
[ 33.901842] ? rwsem_down_write_slowpath+0x11a0/0x11a0
[ 33.902244] ? kernel_read_file+0x3ca/0x510
[ 33.902591] ? __x64_sys_fspick+0x2a0/0x2a0
[ 33.902921] ? init_module_from_file+0xd2/0x130
[ 33.903271] init_module_from_file+0xd2/0x130
[ 33.903621] ? __ia32_sys_init_module+0xa0/0xa0
[ 33.903977] ? userfaultfd_unmap_prep+0x3d0/0x3d0
[ 33.904352] ? _raw_spin_lock_bh+0xe0/0xe0
[ 33.904674] idempotent_init_module+0x339/0x610
[ 33.905028] ? init_module_from_file+0x130/0x130
[ 33.905405] ? __fget_light+0x57/0x500
[ 33.905700] __x64_sys_finit_module+0xba/0x130
[ 33.906046] do_syscall_64+0x35/0x80
[ 33.906342] entry_SYSCALL_64_after_hwframe+0x46/0xb0
[ 33.906743] RIP: 0033:0x7f27dd11b839
[ 33.907026] 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
[ 33.908447] RSP: 002b:00007ffc27087998 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[ 33.909022] RAX: ffffffffffffffda RBX: 00005645642bed20 RCX:
00007f27dd11b839
[ 33.909578] RDX: 0000000000000000 RSI: 000056456321bc2e RDI:
0000000000000004
[ 33.910114] RBP: 000056456321bc2e R08: 0000000000000000 R09:
00005645642bed20
[ 33.910670] R10: 0000000000000004 R11: 0000000000000246 R12:
0000000000000000
[ 33.911219] R13: 00005645642bee90 R14: 0000000000040000 R15:
00005645642bed20
[ 33.911770] </TASK>
[ 33.911947] ---[ end trace 0000000000000000 ]---
[ 33.912307] ------------[ cut here ]------------
[ 33.912679] refcount_t: addition on 0; use-after-free.
[ 33.913097] WARNING: CPU: 6 PID: 1860 at lib/refcount.c:25
refcount_warn_saturate+0x120/0x190
[ 33.913757] Modules linked in: fpga_bridge_test(+) fpga_bridge
[ 33.914207] CPU: 6 PID: 1860 Comm: modprobe Tainted: G W
N 6.6.0-rc3+ #54
[ 33.914834] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.15.0-1 04/01/2014
[ 33.915487] RIP: 0010:refcount_warn_saturate+0x120/0x190
[ 33.915891] Code: 1d bc 3f 40 0a 80 fb 01 0f 87 5a f8 67 01 83 e3 01
0f 85 5d ff ff ff 48 c7 c7 e0 99 7a 84 c6 05 9c 3f 40 0a 01 e8 30 1e 80
fe <0f> 0b e9 43 ff ff ff 0f b6 1d 86 3f 40 0a 80 fb 01 0f 87 4f f8 67
[ 33.917299] RSP: 0018:ffff88810df6f280 EFLAGS: 00010286
[ 33.917717] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
0000000000000000
[ 33.918265] RDX: 0000000000000002 RSI: 0000000000000004 RDI:
0000000000000001
[ 33.918816] RBP: 0000000000000002 R08: 0000000000000001 R09:
ffffed10233e4ef1
[ 33.919372] R10: ffff888119f2778b R11: 746e756f63666572 R12:
ffffffffa0241990
[ 33.919913] R13: ffff88810c83cd58 R14: ffffffffa0241990 R15:
ffff888106502dd8
[ 33.920462] FS: 00007f27dd761540(0000) GS:ffff888119f00000(0000)
knlGS:0000000000000000
[ 33.921066] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 33.921513] CR2: 00007ffc270848b8 CR3: 0000000106d73006 CR4:
0000000000770ee0
[ 33.922059] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 33.922621] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 33.923163] PKRU: 55555554
[ 33.923386] Call Trace:
[ 33.923581] <TASK>
[ 33.923753] ? __warn+0xc9/0x260
[ 33.924008] ? refcount_warn_saturate+0x120/0x190
[ 33.924381] ? report_bug+0x345/0x400
[ 33.924668] ? handle_bug+0x3c/0x70
[ 33.924942] ? exc_invalid_op+0x14/0x40
[ 33.925241] ? asm_exc_invalid_op+0x16/0x20
[ 33.925576] ? refcount_warn_saturate+0x120/0x190
[ 33.925942] kobject_get+0xbd/0xe0
[ 33.926208] kobject_add_internal+0x9e/0x870
[ 33.926552] kobject_add+0x120/0x1f0
[ 33.926841] ? kset_create_and_add+0x160/0x160
[ 33.927186] ? __kmem_cache_alloc_node+0x1d2/0x350
[ 33.927568] ? _raw_spin_lock+0x87/0xe0
[ 33.927871] ? kobject_create_and_add+0x3c/0xb0
[ 33.928226] kobject_create_and_add+0x68/0xb0
[ 33.928581] module_add_driver+0x260/0x350
[ 33.928905] bus_add_driver+0x2c9/0x580
[ 33.929204] driver_register+0x133/0x460
[ 33.929521] kunit_run_tests+0xdb/0xef0
[ 33.929821] ? _raw_spin_lock_irqsave+0x8d/0xe0
[ 33.930177] ? __sched_text_end+0xa/0xa
[ 33.930491] ? _raw_spin_unlock_irqrestore+0x42/0x80
[ 33.930888] ? __kunit_test_suites_exit+0x80/0x80
[ 33.931253] ? set_track_prepare+0x8a/0xd0
[ 33.931582] ? get_object+0x70/0x70
[ 33.931853] ? alloc_inode+0x12a/0x1e0
[ 33.932149] ? new_inode+0x14/0x230
[ 33.932433] ? __debugfs_create_file+0xc8/0x5d0
[ 33.932785] ? __kunit_test_suites_init+0x73/0x140
[ 33.933149] ? kunit_module_notify+0x3ab/0x440
[ 33.933511] ? notifier_call_chain+0xbf/0x280
[ 33.933856] ? _raw_spin_lock_irqsave+0x8d/0xe0
[ 33.934209] ? __sched_text_end+0xa/0xa
[ 33.934519] ? projid_m_show+0x200/0x200
[ 33.934831] ? kasan_set_track+0x21/0x30
[ 33.935135] ? _raw_spin_lock+0x87/0xe0
[ 33.935447] ? _raw_spin_lock_bh+0xe0/0xe0
[ 33.935768] ? _raw_spin_lock+0x87/0xe0
[ 33.936068] ? __d_instantiate+0x1d5/0x3b0
[ 33.936398] ? alloc_inode+0x72/0x1e0
[ 33.936691] ? up_write+0x6d/0xa0
[ 33.936953] ? __debugfs_create_file+0x3b5/0x5d0
[ 33.937325] __kunit_test_suites_init+0xde/0x140
[ 33.937689] kunit_module_notify+0x3ab/0x440
[ 33.938027] ? __kunit_test_suites_init+0x140/0x140
[ 33.938417] ? preempt_count_add+0x79/0x150
[ 33.938751] notifier_call_chain+0xbf/0x280
[ 33.939071] ? kasan_quarantine_put+0x21/0x1a0
[ 33.939428] blocking_notifier_call_chain_robust+0xbb/0x140
[ 33.939860] ? notifier_call_chain+0x280/0x280
[ 33.940207] ? 0xffffffffa0238000
[ 33.940483] load_module+0x4af0/0x67d0
[ 33.940783] ? module_frob_arch_sections+0x20/0x20
[ 33.941153] ? rwsem_down_write_slowpath+0x11a0/0x11a0
[ 33.941562] ? kernel_read_file+0x3ca/0x510
[ 33.941889] ? __x64_sys_fspick+0x2a0/0x2a0
[ 33.942213] ? init_module_from_file+0xd2/0x130
[ 33.942584] init_module_from_file+0xd2/0x130
[ 33.942928] ? __ia32_sys_init_module+0xa0/0xa0
[ 33.943276] ? userfaultfd_unmap_prep+0x3d0/0x3d0
[ 33.943653] ? _raw_spin_lock_bh+0xe0/0xe0
[ 33.943971] idempotent_init_module+0x339/0x610
[ 33.944331] ? init_module_from_file+0x130/0x130
[ 33.944691] ? __fget_light+0x57/0x500
[ 33.944987] __x64_sys_finit_module+0xba/0x130
[ 33.945343] do_syscall_64+0x35/0x80
[ 33.945624] entry_SYSCALL_64_after_hwframe+0x46/0xb0
[ 33.946011] RIP: 0033:0x7f27dd11b839
[ 33.946292] 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
[ 33.947694] RSP: 002b:00007ffc27087998 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[ 33.948267] RAX: ffffffffffffffda RBX: 00005645642bed20 RCX:
00007f27dd11b839
[ 33.948815] RDX: 0000000000000000 RSI: 000056456321bc2e RDI:
0000000000000004
[ 33.949366] RBP: 000056456321bc2e R08: 0000000000000000 R09:
00005645642bed20
[ 33.949905] R10: 0000000000000004 R11: 0000000000000246 R12:
0000000000000000
[ 33.950463] R13: 00005645642bee90 R14: 0000000000040000 R15:
00005645642bed20
[ 33.951014] </TASK>
[ 33.951188] ---[ end trace 0000000000000000 ]---
[ 33.951561] general protection fault, probably for non-canonical
address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
[ 33.952381] KASAN: null-ptr-deref in range
[0x0000000000000018-0x000000000000001f]
[ 33.952952] CPU: 6 PID: 1860 Comm: modprobe Tainted: G W
N 6.6.0-rc3+ #54
[ 33.953554] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.15.0-1 04/01/2014
[ 33.954178] RIP: 0010:kobject_namespace+0x71/0x150
[ 33.954546] Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 cd 00 00 00 48
b8 00 00 00 00 00 fc ff df 49 8b 5c 24 28 48 8d 7b 18 48 89 fa 48 c1 ea
03 <80> 3c 02 00 0f 85 c1 00 00 00 48 8b 43 18 48 85 c0 74 79 4c 89 e7
[ 33.955934] RSP: 0018:ffff88810df6f288 EFLAGS: 00010206
[ 33.956330] RAX: dffffc0000000000 RBX: 0000000000000000 RCX:
0000000000000000
[ 33.956869] RDX: 0000000000000003 RSI: 0000000000000004 RDI:
0000000000000018
[ 33.957411] RBP: ffff88810c83cd40 R08: 0000000000000001 R09:
ffffed10233e4ef1
[ 33.957949] R10: ffff888119f2778b R11: 746e756f63666572 R12:
ffffffffa0241990
[ 33.958486] R13: ffff88810c83cd58 R14: ffff88810c83cd68 R15:
ffffffff84ac7020
[ 33.959030] FS: 00007f27dd761540(0000) GS:ffff888119f00000(0000)
knlGS:0000000000000000
[ 33.959642] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 33.960079] CR2: 00007ffc270848b8 CR3: 0000000106d73006 CR4:
0000000000770ee0
[ 33.960616] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 33.961145] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 33.961682] PKRU: 55555554
[ 33.961890] Call Trace:
[ 33.962081] <TASK>
[ 33.962247] ? die_addr+0x3d/0xa0
[ 33.962511] ? exc_general_protection+0x144/0x220
[ 33.962876] ? asm_exc_general_protection+0x22/0x30
[ 33.963244] ? kobject_namespace+0x71/0x150
[ 33.963570] kobject_add_internal+0x267/0x870
[ 33.963908] kobject_add+0x120/0x1f0
[ 33.964185] ? kset_create_and_add+0x160/0x160
[ 33.964528] ? __kmem_cache_alloc_node+0x1d2/0x350
[ 33.964896] ? _raw_spin_lock+0x87/0xe0
[ 33.965192] ? kobject_create_and_add+0x3c/0xb0
[ 33.965544] kobject_create_and_add+0x68/0xb0
[ 33.965877] module_add_driver+0x260/0x350
[ 33.966197] bus_add_driver+0x2c9/0x580
[ 33.966502] driver_register+0x133/0x460
[ 33.966812] kunit_run_tests+0xdb/0xef0
[ 33.967106] ? _raw_spin_lock_irqsave+0x8d/0xe0
[ 33.967457] ? __sched_text_end+0xa/0xa
[ 33.967756] ? _raw_spin_unlock_irqrestore+0x42/0x80
[ 33.968127] ? __kunit_test_suites_exit+0x80/0x80
[ 33.968489] ? set_track_prepare+0x8a/0xd0
[ 33.968810] ? get_object+0x70/0x70
[ 33.969078] ? alloc_inode+0x12a/0x1e0
[ 33.969371] ? new_inode+0x14/0x230
[ 33.969644] ? __debugfs_create_file+0xc8/0x5d0
[ 33.969992] ? __kunit_test_suites_init+0x73/0x140
[ 33.970365] ? kunit_module_notify+0x3ab/0x440
[ 33.970711] ? notifier_call_chain+0xbf/0x280
[ 33.971044] ? _raw_spin_lock_irqsave+0x8d/0xe0
[ 33.971399] ? __sched_text_end+0xa/0xa
[ 33.971701] ? projid_m_show+0x200/0x200
[ 33.972009] ? kasan_set_track+0x21/0x30
[ 33.972313] ? _raw_spin_lock+0x87/0xe0
[ 33.972614] ? _raw_spin_lock_bh+0xe0/0xe0
[ 33.972931] ? _raw_spin_lock+0x87/0xe0
[ 33.973221] ? __d_instantiate+0x1d5/0x3b0
[ 33.973537] ? alloc_inode+0x72/0x1e0
[ 33.973819] ? up_write+0x6d/0xa0
[ 33.974075] ? __debugfs_create_file+0x3b5/0x5d0
[ 33.974431] __kunit_test_suites_init+0xde/0x140
[ 33.974794] kunit_module_notify+0x3ab/0x440
[ 33.975123] ? __kunit_test_suites_init+0x140/0x140
[ 33.975499] ? preempt_count_add+0x79/0x150
[ 33.975825] notifier_call_chain+0xbf/0x280
[ 33.976146] ? kasan_quarantine_put+0x21/0x1a0
[ 33.976498] blocking_notifier_call_chain_robust+0xbb/0x140
[ 33.976919] ? notifier_call_chain+0x280/0x280
[ 33.977262] ? 0xffffffffa0238000
[ 33.977527] load_module+0x4af0/0x67d0
[ 33.977822] ? module_frob_arch_sections+0x20/0x20
[ 33.978190] ? rwsem_down_write_slowpath+0x11a0/0x11a0
[ 33.978592] ? kernel_read_file+0x3ca/0x510
[ 33.978920] ? __x64_sys_fspick+0x2a0/0x2a0
[ 33.979244] ? init_module_from_file+0xd2/0x130
[ 33.979595] init_module_from_file+0xd2/0x130
[ 33.979932] ? __ia32_sys_init_module+0xa0/0xa0
[ 33.980278] ? userfaultfd_unmap_prep+0x3d0/0x3d0
[ 33.980642] ? _raw_spin_lock_bh+0xe0/0xe0
[ 33.980958] idempotent_init_module+0x339/0x610
[ 33.981311] ? init_module_from_file+0x130/0x130
[ 33.981671] ? __fget_light+0x57/0x500
[ 33.981965] __x64_sys_finit_module+0xba/0x130
[ 33.982307] do_syscall_64+0x35/0x80
[ 33.982596] entry_SYSCALL_64_after_hwframe+0x46/0xb0
[ 33.982977] RIP: 0033:0x7f27dd11b839
[ 33.983250] 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
[ 33.984642] RSP: 002b:00007ffc27087998 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[ 33.985206] RAX: ffffffffffffffda RBX: 00005645642bed20 RCX:
00007f27dd11b839
[ 33.985738] RDX: 0000000000000000 RSI: 000056456321bc2e RDI:
0000000000000004
[ 33.986272] RBP: 000056456321bc2e R08: 0000000000000000 R09:
00005645642bed20
[ 33.986830] R10: 0000000000000004 R11: 0000000000000246 R12:
0000000000000000
[ 33.987381] R13: 00005645642bee90 R14: 0000000000040000 R15:
00005645642bed20
[ 33.987926] </TASK>
[ 33.988098] Modules linked in: fpga_bridge_test(+) fpga_bridge
[ 33.988551] Dumping ftrace buffer:
[ 33.988814] (ftrace buffer empty)
[ 33.989107] ---[ end trace 0000000000000000 ]---
[ 33.989516] RIP: 0010:kobject_namespace+0x71/0x150
[ 33.989886] Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 cd 00 00 00 48
b8 00 00 00 00 00 fc ff df 49 8b 5c 24 28 48 8d 7b 18 48 89 fa 48 c1 ea
03 <80> 3c 02 00 0f 85 c1 00 00 00 48 8b 43 18 48 85 c0 74 79 4c 89 e7
[ 33.991715] RSP: 0018:ffff88810df6f288 EFLAGS: 00010206
[ 33.992201] RAX: dffffc0000000000 RBX: 0000000000000000 RCX:
0000000000000000
[ 33.992989] RDX: 0000000000000003 RSI: 0000000000000004 RDI:
0000000000000018
[ 33.993614] RBP: ffff88810c83cd40 R08: 0000000000000001 R09:
ffffed10233e4ef1
[ 33.994373] R10: ffff888119f2778b R11: 746e756f63666572 R12:
ffffffffa0241990
[ 33.995091] R13: ffff88810c83cd58 R14: ffff88810c83cd68 R15:
ffffffff84ac7020
[ 33.995829] FS: 00007f27dd761540(0000) GS:ffff888119f00000(0000)
knlGS:0000000000000000
[ 33.996640] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 33.997246] CR2: 00007ffc270848b8 CR3: 0000000106d73006 CR4:
0000000000770ee0
[ 33.997971] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 33.998673] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 33.999414] PKRU: 55555554
[ 33.999678] Kernel panic - not syncing: Fatal exception
[ 34.001019] Dumping ftrace buffer:
[ 34.001286] (ftrace buffer empty)
[ 34.001561] Kernel Offset: disabled
[ 34.001829] Rebooting in 1 seconds..
> +}
> +
> +static void fpga_bridge_test_suite_exit(struct kunit_suite *suite)
> +{
> + platform_driver_unregister(&test_platform_driver);
> +}
> +
> static int fpga_bridge_test_init(struct kunit *test)
> {
> test->priv = register_test_bridge(test);
> @@ -165,6 +179,8 @@ static struct kunit_case fpga_bridge_test_cases[] = {
>
> static struct kunit_suite fpga_bridge_suite = {
> .name = "fpga_bridge",
> + .suite_init = fpga_bridge_test_suite_init,
> + .suite_exit = fpga_bridge_test_suite_exit,
> .init = fpga_bridge_test_init,
> .exit = fpga_bridge_test_exit,
> .test_cases = fpga_bridge_test_cases,
