BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 1d59f6067 P4D 1d59f6067 PUD 1d59f7067 PMD 0
Oops: 0000 [#1] SMP KASAN
CPU: 1 PID: 83 Comm: kworker/1:2 Not tainted 5.5.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3d/0x60 kernel/kcov.c:203
Code: 01 1f 00 48 8b 34 24 74 09 80 b8 d4 12 00 00 00 74 2b 8b 90 b0 12 00 00 83 fa 02 75 20 48 8b 88 b8 12 00 00 8b 80 b4 12 00 00 <48> 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f
RSP: 0018:ffff8881d8b07968 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8881da003900 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff816792eb RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff8881d8d4b100 R09: 0000000000000001
R10: ffff8881d8b07aa0 R11: ffff8881d4ec1837 R12: 0000000000000000
R13: 0000000000000008 R14: ffffffff83579529 R15: 0000000000000c00
FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001d59f5000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__should_failslab+0xdb/0x180 mm/failslab.c:33
should_failslab+0x5/0xf mm/slab_common.c:1810
slab_pre_alloc_hook mm/slab.h:567 [inline]
slab_alloc_node mm/slub.c:2683 [inline]
slab_alloc mm/slub.c:2767 [inline]
kmem_cache_alloc_trace+0x248/0x2f0 mm/slub.c:2784
kmalloc include/linux/slab.h:556 [inline]
usb_control_msg+0xb9/0x4a0 drivers/usb/core/message.c:142
get_port_status drivers/usb/core/hub.c:570 [inline]
hub_ext_port_status+0x125/0x460 drivers/usb/core/hub.c:587
hub_port_status drivers/usb/core/hub.c:609 [inline]
port_event drivers/usb/core/hub.c:5378 [inline]
hub_event+0x5cd/0x3860 drivers/usb/core/hub.c:5552
process_one_work+0x92b/0x1530 kernel/workqueue.c:2264
worker_thread+0x96/0xe20 kernel/workqueue.c:2410
kthread+0x318/0x420 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
CR2: 0000000000000000
---[ end trace b20052b74a84d490 ]---
RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3d/0x60 kernel/kcov.c:203
Code: 01 1f 00 48 8b 34 24 74 09 80 b8 d4 12 00 00 00 74 2b 8b 90 b0 12 00 00 83 fa 02 75 20 48 8b 88 b8 12 00 00 8b 80 b4 12 00 00 <48> 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f
RSP: 0018:ffff8881d8b07968 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8881da003900 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff816792eb RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff8881d8d4b100 R09: 0000000000000001
R10: ffff8881d8b07aa0 R11: ffff8881d4ec1837 R12: 0000000000000000
R13: 0000000000000008 R14: ffffffff83579529 R15: 0000000000000c00
FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001d59f5000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400