Date
April 20, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-x86_64 | |
| rk3399-rock-pi-4b |
[ 11.832913] ================================================================== [ 11.833829] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x19c/0x350 [ 11.834309] Read of size 1 at addr ffff8881023f82e0 by task kunit_try_catch/212 [ 11.834814] [ 11.835108] CPU: 0 UID: 0 PID: 212 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc3 #1 PREEMPT(voluntary) [ 11.835158] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.835171] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.835198] Call Trace: [ 11.835210] <TASK> [ 11.835226] dump_stack_lvl+0x73/0xb0 [ 11.835254] print_report+0xd1/0x650 [ 11.835278] ? __virt_addr_valid+0x1db/0x2d0 [ 11.835300] ? kmalloc_double_kzfree+0x19c/0x350 [ 11.835336] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.835359] ? kmalloc_double_kzfree+0x19c/0x350 [ 11.835383] kasan_report+0x141/0x180 [ 11.835579] ? kmalloc_double_kzfree+0x19c/0x350 [ 11.835613] ? kmalloc_double_kzfree+0x19c/0x350 [ 11.835636] __kasan_check_byte+0x3d/0x50 [ 11.835660] kfree_sensitive+0x22/0x90 [ 11.835684] kmalloc_double_kzfree+0x19c/0x350 [ 11.835707] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 11.835731] ? __schedule+0x10cc/0x2b30 [ 11.835755] ? __pfx_read_tsc+0x10/0x10 [ 11.835775] ? ktime_get_ts64+0x86/0x230 [ 11.835802] kunit_try_run_case+0x1a5/0x480 [ 11.835825] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.835846] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.835869] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.835893] ? __kthread_parkme+0x82/0x180 [ 11.835913] ? preempt_count_sub+0x50/0x80 [ 11.835937] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.835961] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.835983] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.836005] kthread+0x337/0x6f0 [ 11.836025] ? trace_preempt_on+0x20/0xc0 [ 11.836049] ? __pfx_kthread+0x10/0x10 [ 11.836070] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.836091] ? calculate_sigpending+0x7b/0xa0 [ 11.836113] ? __pfx_kthread+0x10/0x10 [ 11.836143] ret_from_fork+0x41/0x80 [ 11.836163] ? __pfx_kthread+0x10/0x10 [ 11.836185] ret_from_fork_asm+0x1a/0x30 [ 11.836215] </TASK> [ 11.836226] [ 11.846169] Allocated by task 212: [ 11.846391] kasan_save_stack+0x45/0x70 [ 11.846543] kasan_save_track+0x18/0x40 [ 11.846737] kasan_save_alloc_info+0x3b/0x50 [ 11.846940] __kasan_kmalloc+0xb7/0xc0 [ 11.847103] __kmalloc_cache_noprof+0x189/0x420 [ 11.847352] kmalloc_double_kzfree+0xa9/0x350 [ 11.847503] kunit_try_run_case+0x1a5/0x480 [ 11.847671] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.847924] kthread+0x337/0x6f0 [ 11.848094] ret_from_fork+0x41/0x80 [ 11.848273] ret_from_fork_asm+0x1a/0x30 [ 11.848433] [ 11.848503] Freed by task 212: [ 11.848721] kasan_save_stack+0x45/0x70 [ 11.848923] kasan_save_track+0x18/0x40 [ 11.849117] kasan_save_free_info+0x3f/0x60 [ 11.849342] __kasan_slab_free+0x56/0x70 [ 11.849592] kfree+0x222/0x3f0 [ 11.849780] kfree_sensitive+0x67/0x90 [ 11.849979] kmalloc_double_kzfree+0x12b/0x350 [ 11.850177] kunit_try_run_case+0x1a5/0x480 [ 11.850577] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.850810] kthread+0x337/0x6f0 [ 11.850933] ret_from_fork+0x41/0x80 [ 11.851063] ret_from_fork_asm+0x1a/0x30 [ 11.851202] [ 11.851299] The buggy address belongs to the object at ffff8881023f82e0 [ 11.851299] which belongs to the cache kmalloc-16 of size 16 [ 11.851908] The buggy address is located 0 bytes inside of [ 11.851908] freed 16-byte region [ffff8881023f82e0, ffff8881023f82f0) [ 11.852502] [ 11.852604] The buggy address belongs to the physical page: [ 11.852836] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1023f8 [ 11.853168] flags: 0x200000000000000(node=0|zone=2) [ 11.853377] page_type: f5(slab) [ 11.853554] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 11.853845] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 11.854207] page dumped because: kasan: bad access detected [ 11.854566] [ 11.854652] Memory state around the buggy address: [ 11.854848] ffff8881023f8180: 00 02 fc fc 00 02 fc fc 00 06 fc fc 00 06 fc fc [ 11.855142] ffff8881023f8200: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 11.855613] >ffff8881023f8280: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 11.855887] ^ [ 11.856164] ffff8881023f8300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.856389] ffff8881023f8380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.856600] ==================================================================
[ 21.735942] ================================================================== [ 21.737265] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x168/0x308 [ 21.737972] Read of size 1 at addr ffff0000015a8c60 by task kunit_try_catch/246 [ 21.738656] [ 21.738830] CPU: 1 UID: 0 PID: 246 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc3 #1 PREEMPT [ 21.738891] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.738909] Hardware name: Radxa ROCK Pi 4B (DT) [ 21.738931] Call trace: [ 21.738945] show_stack+0x20/0x38 (C) [ 21.738987] dump_stack_lvl+0x8c/0xd0 [ 21.739024] print_report+0x118/0x608 [ 21.739062] kasan_report+0xdc/0x128 [ 21.739096] __kasan_check_byte+0x54/0x70 [ 21.739133] kfree_sensitive+0x30/0xb0 [ 21.739169] kmalloc_double_kzfree+0x168/0x308 [ 21.739213] kunit_try_run_case+0x170/0x3f0 [ 21.739257] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.739305] kthread+0x328/0x630 [ 21.739346] ret_from_fork+0x10/0x20 [ 21.739387] [ 21.745297] Allocated by task 246: [ 21.745630] kasan_save_stack+0x3c/0x68 [ 21.746014] kasan_save_track+0x20/0x40 [ 21.746395] kasan_save_alloc_info+0x40/0x58 [ 21.746817] __kasan_kmalloc+0xd4/0xd8 [ 21.747190] __kmalloc_cache_noprof+0x15c/0x3c0 [ 21.747644] kmalloc_double_kzfree+0xb8/0x308 [ 21.748081] kunit_try_run_case+0x170/0x3f0 [ 21.748500] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.749034] kthread+0x328/0x630 [ 21.749368] ret_from_fork+0x10/0x20 [ 21.749728] [ 21.749888] Freed by task 246: [ 21.750190] kasan_save_stack+0x3c/0x68 [ 21.750571] kasan_save_track+0x20/0x40 [ 21.750951] kasan_save_free_info+0x4c/0x78 [ 21.751366] __kasan_slab_free+0x6c/0x98 [ 21.751755] kfree+0x214/0x3c8 [ 21.752073] kfree_sensitive+0x80/0xb0 [ 21.752446] kmalloc_double_kzfree+0x11c/0x308 [ 21.752889] kunit_try_run_case+0x170/0x3f0 [ 21.753305] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.753841] kthread+0x328/0x630 [ 21.754176] ret_from_fork+0x10/0x20 [ 21.754537] [ 21.754696] The buggy address belongs to the object at ffff0000015a8c60 [ 21.754696] which belongs to the cache kmalloc-16 of size 16 [ 21.755825] The buggy address is located 0 bytes inside of [ 21.755825] freed 16-byte region [ffff0000015a8c60, ffff0000015a8c70) [ 21.756903] [ 21.757051] The buggy address belongs to the physical page: [ 21.757559] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x15a8 [ 21.758272] flags: 0x3fffe0000000000(node=0|zone=0|lastcpupid=0x1ffff) [ 21.758872] page_type: f5(slab) [ 21.759176] raw: 03fffe0000000000 ffff000000402640 dead000000000122 0000000000000000 [ 21.759880] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 21.760578] page dumped because: kasan: bad access detected [ 21.761084] [ 21.761231] Memory state around the buggy address: [ 21.761670] ffff0000015a8b00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 21.762326] ffff0000015a8b80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 21.762980] >ffff0000015a8c00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 21.763632] ^ [ 21.764209] ffff0000015a8c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.764864] ffff0000015a8d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.765515] ==================================================================