Date
July 15, 2025, 2:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.224275] ================================================================== [ 19.224359] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 19.224441] Read of size 1 at addr fff00000c664e000 by task kunit_try_catch/217 [ 19.224495] [ 19.224539] CPU: 1 UID: 0 PID: 217 Comm: kunit_try_catch Tainted: G B N 6.15.7-rc1 #1 PREEMPT [ 19.224626] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.224653] Hardware name: linux,dummy-virt (DT) [ 19.224690] Call trace: [ 19.224714] show_stack+0x20/0x38 (C) [ 19.224765] dump_stack_lvl+0x8c/0xd0 [ 19.224819] print_report+0x118/0x5d0 [ 19.224863] kasan_report+0xdc/0x128 [ 19.224908] __kasan_check_byte+0x54/0x70 [ 19.224954] kmem_cache_destroy+0x34/0x218 [ 19.225001] kmem_cache_double_destroy+0x174/0x300 [ 19.225054] kunit_try_run_case+0x170/0x3f0 [ 19.225106] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.225159] kthread+0x328/0x630 [ 19.225219] ret_from_fork+0x10/0x20 [ 19.225268] [ 19.225286] Allocated by task 217: [ 19.225317] kasan_save_stack+0x3c/0x68 [ 19.225360] kasan_save_track+0x20/0x40 [ 19.225396] kasan_save_alloc_info+0x40/0x58 [ 19.225436] __kasan_slab_alloc+0xa8/0xb0 [ 19.225473] kmem_cache_alloc_noprof+0x10c/0x398 [ 19.225512] __kmem_cache_create_args+0x178/0x280 [ 19.225551] kmem_cache_double_destroy+0xc0/0x300 [ 19.225594] kunit_try_run_case+0x170/0x3f0 [ 19.225634] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.225678] kthread+0x328/0x630 [ 19.225714] ret_from_fork+0x10/0x20 [ 19.225748] [ 19.225767] Freed by task 217: [ 19.225793] kasan_save_stack+0x3c/0x68 [ 19.225829] kasan_save_track+0x20/0x40 [ 19.225864] kasan_save_free_info+0x4c/0x78 [ 19.225903] __kasan_slab_free+0x6c/0x98 [ 19.225940] kmem_cache_free+0x260/0x468 [ 19.225974] slab_kmem_cache_release+0x38/0x50 [ 19.226014] kmem_cache_release+0x1c/0x30 [ 19.226054] kobject_put+0x17c/0x420 [ 19.226091] sysfs_slab_release+0x1c/0x30 [ 19.226129] kmem_cache_destroy+0x118/0x218 [ 19.226165] kmem_cache_double_destroy+0x128/0x300 [ 19.226221] kunit_try_run_case+0x170/0x3f0 [ 19.226260] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.226305] kthread+0x328/0x630 [ 19.226341] ret_from_fork+0x10/0x20 [ 19.226375] [ 19.226396] The buggy address belongs to the object at fff00000c664e000 [ 19.226396] which belongs to the cache kmem_cache of size 208 [ 19.226458] The buggy address is located 0 bytes inside of [ 19.226458] freed 208-byte region [fff00000c664e000, fff00000c664e0d0) [ 19.226522] [ 19.226545] The buggy address belongs to the physical page: [ 19.226580] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10664e [ 19.226636] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.226691] page_type: f5(slab) [ 19.226732] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 19.226785] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 19.226828] page dumped because: kasan: bad access detected [ 19.226860] [ 19.226878] Memory state around the buggy address: [ 19.226911] fff00000c664df00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 19.226956] fff00000c664df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.227000] >fff00000c664e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.227039] ^ [ 19.227066] fff00000c664e080: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 19.227110] fff00000c664e100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.227151] ==================================================================
[ 11.842434] ================================================================== [ 11.843120] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 11.843378] Read of size 1 at addr ffff8881011f73c0 by task kunit_try_catch/234 [ 11.843598] [ 11.843686] CPU: 1 UID: 0 PID: 234 Comm: kunit_try_catch Tainted: G B N 6.15.7-rc1 #1 PREEMPT(voluntary) [ 11.843732] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.843744] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.843765] Call Trace: [ 11.843777] <TASK> [ 11.843794] dump_stack_lvl+0x73/0xb0 [ 11.843820] print_report+0xd1/0x610 [ 11.843843] ? __virt_addr_valid+0x1db/0x2d0 [ 11.843864] ? kmem_cache_double_destroy+0x1bf/0x380 [ 11.843896] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.843918] ? kmem_cache_double_destroy+0x1bf/0x380 [ 11.843950] kasan_report+0x141/0x180 [ 11.843972] ? kmem_cache_double_destroy+0x1bf/0x380 [ 11.843995] ? kmem_cache_double_destroy+0x1bf/0x380 [ 11.844015] __kasan_check_byte+0x3d/0x50 [ 11.844037] kmem_cache_destroy+0x25/0x1d0 [ 11.844060] kmem_cache_double_destroy+0x1bf/0x380 [ 11.844081] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 11.844100] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 11.844126] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 11.844151] kunit_try_run_case+0x1a5/0x480 [ 11.844171] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.844188] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.844213] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.844236] ? __kthread_parkme+0x82/0x180 [ 11.844257] ? preempt_count_sub+0x50/0x80 [ 11.844319] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.844340] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.844363] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.844385] kthread+0x337/0x6f0 [ 11.844401] ? trace_preempt_on+0x20/0xc0 [ 11.844425] ? __pfx_kthread+0x10/0x10 [ 11.844441] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.844463] ? calculate_sigpending+0x7b/0xa0 [ 11.844485] ? __pfx_kthread+0x10/0x10 [ 11.844502] ret_from_fork+0x41/0x80 [ 11.844523] ? __pfx_kthread+0x10/0x10 [ 11.844540] ret_from_fork_asm+0x1a/0x30 [ 11.844570] </TASK> [ 11.844581] [ 11.857398] Allocated by task 234: [ 11.857542] kasan_save_stack+0x45/0x70 [ 11.857781] kasan_save_track+0x18/0x40 [ 11.858348] kasan_save_alloc_info+0x3b/0x50 [ 11.858589] __kasan_slab_alloc+0x91/0xa0 [ 11.858742] kmem_cache_alloc_noprof+0x123/0x3f0 [ 11.859125] __kmem_cache_create_args+0x169/0x240 [ 11.859356] kmem_cache_double_destroy+0xd5/0x380 [ 11.859572] kunit_try_run_case+0x1a5/0x480 [ 11.859768] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.860114] kthread+0x337/0x6f0 [ 11.860273] ret_from_fork+0x41/0x80 [ 11.860457] ret_from_fork_asm+0x1a/0x30 [ 11.860666] [ 11.860759] Freed by task 234: [ 11.860931] kasan_save_stack+0x45/0x70 [ 11.861072] kasan_save_track+0x18/0x40 [ 11.861224] kasan_save_free_info+0x3f/0x60 [ 11.861422] __kasan_slab_free+0x56/0x70 [ 11.861607] kmem_cache_free+0x249/0x420 [ 11.861739] slab_kmem_cache_release+0x2e/0x40 [ 11.862210] kmem_cache_release+0x16/0x20 [ 11.862442] kobject_put+0x181/0x450 [ 11.862576] sysfs_slab_release+0x16/0x20 [ 11.862712] kmem_cache_destroy+0xf0/0x1d0 [ 11.862869] kmem_cache_double_destroy+0x14e/0x380 [ 11.863201] kunit_try_run_case+0x1a5/0x480 [ 11.863518] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.863866] kthread+0x337/0x6f0 [ 11.863998] ret_from_fork+0x41/0x80 [ 11.864127] ret_from_fork_asm+0x1a/0x30 [ 11.864347] [ 11.864442] The buggy address belongs to the object at ffff8881011f73c0 [ 11.864442] which belongs to the cache kmem_cache of size 208 [ 11.865013] The buggy address is located 0 bytes inside of [ 11.865013] freed 208-byte region [ffff8881011f73c0, ffff8881011f7490) [ 11.865626] [ 11.865724] The buggy address belongs to the physical page: [ 11.865982] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1011f7 [ 11.866486] flags: 0x200000000000000(node=0|zone=2) [ 11.866714] page_type: f5(slab) [ 11.867077] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 11.867440] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 11.867826] page dumped because: kasan: bad access detected [ 11.868031] [ 11.868124] Memory state around the buggy address: [ 11.868320] ffff8881011f7280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.868570] ffff8881011f7300: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 11.869120] >ffff8881011f7380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 11.869510] ^ [ 11.869896] ffff8881011f7400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.870201] ffff8881011f7480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.870507] ==================================================================