================================================================== BUG: KASAN: double-free in rcu_free_sheaf+0x31/0x200 mm/slub.c:6060 Free of addr ffff88802c351300 by task ksoftirqd/0/15 CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_address_description+0x55/0x1e0 mm/kasan/report.c:378 print_report+0x58/0x70 mm/kasan/report.c:482 kasan_report_invalid_free+0xea/0x110 mm/kasan/report.c:557 check_slab_allocation mm/kasan/common.c:-1 [inline] __kasan_slab_pre_free+0x104/0x120 mm/kasan/common.c:261 kasan_slab_pre_free include/linux/kasan.h:199 [inline] slab_free_hook mm/slub.c:2693 [inline] __rcu_free_sheaf_prepare+0x10a/0x2a0 mm/slub.c:3009 rcu_free_sheaf+0x31/0x200 mm/slub.c:6060 rcu_do_batch kernel/rcu/tree.c:2650 [inline] rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919 handle_softirqs+0x226/0x860 kernel/softirq.c:645 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099 smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Allocated by task 146: kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 poison_kmalloc_redzone mm/kasan/common.c:398 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415 kasan_kmalloc include/linux/kasan.h:263 [inline] __kmalloc_cache_noprof+0x321/0x600 mm/slub.c:5563 _kmalloc_noprof include/linux/slab.h:991 [inline] _kzalloc_noprof include/linux/slab.h:1312 [inline] hwsim_update_pib+0x7e/0x400 drivers/net/ieee802154/mac802154_hwsim.c:103 hwsim_set_promiscuous_mode+0x196/0x2e0 drivers/net/ieee802154/mac802154_hwsim.c:326 drv_set_promiscuous_mode+0x159/0x2e0 net/mac802154/driver-ops.h:127 drv_start+0x4ea/0x1010 net/mac802154/driver-ops.h:167 mac802154_scan_worker+0x8e6/0xe60 net/mac802154/scan.c:248 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Freed by task 24: kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:253 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2748 [inline] __rcu_free_sheaf_prepare+0x12d/0x2a0 mm/slub.c:3009 rcu_free_sheaf+0x31/0x200 mm/slub.c:6060 rcu_do_batch kernel/rcu/tree.c:2650 [inline] rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919 handle_softirqs+0x226/0x860 kernel/softirq.c:645 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099 smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 The buggy address belongs to the object at ffff88802c351300 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 0 bytes inside of 64-byte region [ffff88802c351300, ffff88802c351340) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802c351400 pfn:0x2c351 flags: 0xfff00000000200(workingset|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000200 ffff88801b0418c0 ffffea0001e06390 ffffea000162cbd0 raw: ffff88802c351400 000000000020001f 00000000f5000000 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 14228088803 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871 prep_new_page mm/page_alloc.c:1879 [inline] get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943 __alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436 alloc_slab_page mm/slub.c:3347 [inline] allocate_slab+0x7d/0x620 mm/slub.c:3462 new_slab mm/slub.c:3513 [inline] refill_objects+0x2d5/0x350 mm/slub.c:7417 refill_sheaf mm/slub.c:2885 [inline] __pcs_replace_empty_main+0x2c8/0x6c0 mm/slub.c:4774 alloc_from_pcs mm/slub.c:4850 [inline] slab_alloc_node mm/slub.c:4984 [inline] __do_kmalloc_node mm/slub.c:5413 [inline] __kmalloc_noprof+0x47b/0x720 mm/slub.c:5439 _kmalloc_noprof include/linux/slab.h:995 [inline] _kzalloc_noprof include/linux/slab.h:1312 [inline] kobject_get_path+0xc5/0x2f0 lib/kobject.c:161 kobject_uevent_env+0x29e/0x9e0 lib/kobject_uevent.c:548 really_probe+0x774/0xae0 drivers/base/dd.c:756 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898 __device_attach_driver+0x270/0x410 drivers/base/dd.c:1026 bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c4/0x450 drivers/base/dd.c:1098 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153 page_owner free stack trace missing Memory state around the buggy address: ffff88802c351200: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff88802c351280: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc >ffff88802c351300: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ^ ffff88802c351380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88802c351400: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================