device_add+0x3b0e/0x40d0 drivers/base/core.c:2680 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2554 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x5e7b/0x8a70 drivers/usb/core/hub.c:5576 process_one_work+0x1688/0x2140 kernel/workqueue.c:2269 worker_thread+0x10bc/0x2730 kernel/workqueue.c:2415 kthread+0x551/0x590 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 Uninit was created at: ===================================================== BUG: KMSAN: uninit-value in is_kernel include/linux/kallsyms.h:42 [inline] BUG: KMSAN: uninit-value in is_ksym_addr include/linux/kallsyms.h:50 [inline] BUG: KMSAN: uninit-value in kallsyms_lookup+0x1c2/0x8d0 kernel/kallsyms.c:290 CPU: 1 PID: 23683 Comm: kworker/1:8 Not tainted 5.8.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215 is_kernel include/linux/kallsyms.h:42 [inline] is_ksym_addr include/linux/kallsyms.h:50 [inline] kallsyms_lookup+0x1c2/0x8d0 kernel/kallsyms.c:290 __sprint_symbol+0x140/0x5b0 kernel/kallsyms.c:363 sprint_symbol+0x7c/0x90 kernel/kallsyms.c:394 symbol_string+0x197/0x4c0 lib/vsprintf.c:969 pointer+0x60c/0x1c30 lib/vsprintf.c:2226 vsnprintf+0x1b35/0x35c0 lib/vsprintf.c:2624 vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2723 vprintk_store+0xf5/0x1440 kernel/printk/printk.c:1943 vprintk_emit+0x300/0x990 kernel/printk/printk.c:2010 vprintk_default+0x90/0xa0 kernel/printk/printk.c:2046 vprintk_func+0x2f7/0x300 kernel/printk/printk_safe.c:393 printk+0x18b/0x1d3 kernel/printk/printk.c:2077 stack_trace_print+0x1b1/0x1f0 kernel/stacktrace.c:32 kmsan_print_origin+0x1a0/0x1b0 mm/kmsan/kmsan_report.c:62 kmsan_internal_chain_origin+0x76/0x130 mm/kmsan/kmsan.c:302 kmsan_memcpy_memmove_metadata+0x272/0x2e0 mm/kmsan/kmsan.c:247 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:272 __msan_memmove+0x43/0x50 mm/kmsan/kmsan_instr.c:92 ir_establish_scancode drivers/media/rc/rc-main.c:405 [inline] ir_setkeytable drivers/media/rc/rc-main.c:483 [inline] rc_prepare_rx_device drivers/media/rc/rc-main.c:1786 [inline] rc_register_device+0x1164/0x2db0 drivers/media/rc/rc-main.c:1914 igorplugusb_probe+0x991/0x11e0 drivers/media/rc/igorplugusb.c:209 usb_probe_interface+0xece/0x1550 drivers/usb/core/driver.c:374 really_probe+0xf20/0x20b0 drivers/base/dd.c:529 driver_probe_device+0x293/0x390 drivers/base/dd.c:701 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:807 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x4e2/0x7f0 drivers/base/dd.c:873 device_initial_probe+0x4a/0x60 drivers/base/dd.c:920 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x3b0e/0x40d0 drivers/base/core.c:2680 usb_set_configuration+0x380f/0x3f10 drivers/usb/core/message.c:2032 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:241 usb_probe_device+0x311/0x490 drivers/usb/core/driver.c:272 really_probe+0xf20/0x20b0 drivers/base/dd.c:529 driver_probe_device+0x293/0x390 drivers/base/dd.c:701 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:807 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x4e2/0x7f0 drivers/base/dd.c:873 device_initial_probe+0x4a/0x60 drivers/base/dd.c:920 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x3b0e/0x40d0 drivers/base/core.c:2680 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2554 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x5e7b/0x8a70 drivers/usb/core/hub.c:5576 process_one_work+0x1688/0x2140 kernel/workqueue.c:2269 worker_thread+0x10bc/0x2730 kernel/workqueue.c:2415 kthread+0x551/0x590 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:144 kmsan_internal_alloc_meta_for_pages mm/kmsan/kmsan_shadow.c:269 [inline] kmsan_alloc_page+0xc5/0x1a0 mm/kmsan/kmsan_shadow.c:293 __alloc_pages_nodemask+0xdf0/0x1030 mm/page_alloc.c:4889 __alloc_pages include/linux/gfp.h:509 [inline] __alloc_pages_node include/linux/gfp.h:522 [inline] alloc_pages_node include/linux/gfp.h:536 [inline] __page_frag_cache_refill mm/page_alloc.c:4964 [inline] page_frag_alloc+0x35b/0x880 mm/page_alloc.c:4994 __netdev_alloc_skb+0xc3d/0xc90 net/core/skbuff.c:456 __netdev_alloc_skb_ip_align include/linux/skbuff.h:2826 [inline] netdev_alloc_skb_ip_align include/linux/skbuff.h:2836 [inline] batadv_iv_ogm_aggregate_new net/batman-adv/bat_iv_ogm.c:558 [inline] batadv_iv_ogm_queue_add+0x13bf/0x1c60 net/batman-adv/bat_iv_ogm.c:670 batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:849 [inline] batadv_iv_ogm_schedule+0x126d/0x1660 net/batman-adv/bat_iv_ogm.c:869 batadv_iv_send_outstanding_bat_ogm_packet+0xd69/0xef0 net/batman-adv/bat_iv_ogm.c:1722 process_one_work+0x1688/0x2140 kernel/workqueue.c:2269 worker_thread+0x10bc/0x2730 kernel/workqueue.c:2415 kthread+0x551/0x590 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 =====================================================