Date
July 8, 2025, 4:38 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.197115] ================================================================== [ 19.197190] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 19.197266] Read of size 1 at addr fff00000c6e5a140 by task kunit_try_catch/217 [ 19.197927] [ 19.197977] CPU: 1 UID: 0 PID: 217 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT [ 19.198065] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.198094] Hardware name: linux,dummy-virt (DT) [ 19.198134] Call trace: [ 19.198249] show_stack+0x20/0x38 (C) [ 19.198472] dump_stack_lvl+0x8c/0xd0 [ 19.198598] print_report+0x118/0x608 [ 19.198645] kasan_report+0xdc/0x128 [ 19.198689] __kasan_check_byte+0x54/0x70 [ 19.198736] kmem_cache_destroy+0x34/0x218 [ 19.198782] kmem_cache_double_destroy+0x174/0x300 [ 19.198833] kunit_try_run_case+0x170/0x3f0 [ 19.198895] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.199147] kthread+0x328/0x630 [ 19.199272] ret_from_fork+0x10/0x20 [ 19.199363] [ 19.199382] Allocated by task 217: [ 19.199410] kasan_save_stack+0x3c/0x68 [ 19.199451] kasan_save_track+0x20/0x40 [ 19.199488] kasan_save_alloc_info+0x40/0x58 [ 19.199527] __kasan_slab_alloc+0xa8/0xb0 [ 19.199564] kmem_cache_alloc_noprof+0x10c/0x398 [ 19.199671] __kmem_cache_create_args+0x178/0x280 [ 19.199714] kmem_cache_double_destroy+0xc0/0x300 [ 19.199757] kunit_try_run_case+0x170/0x3f0 [ 19.199795] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.199840] kthread+0x328/0x630 [ 19.199878] ret_from_fork+0x10/0x20 [ 19.199914] [ 19.199933] Freed by task 217: [ 19.200044] kasan_save_stack+0x3c/0x68 [ 19.200191] kasan_save_track+0x20/0x40 [ 19.200259] kasan_save_free_info+0x4c/0x78 [ 19.200452] __kasan_slab_free+0x6c/0x98 [ 19.200493] kmem_cache_free+0x260/0x468 [ 19.200530] slab_kmem_cache_release+0x38/0x50 [ 19.200643] kmem_cache_release+0x1c/0x30 [ 19.200684] kobject_put+0x17c/0x420 [ 19.200722] sysfs_slab_release+0x1c/0x30 [ 19.200760] kmem_cache_destroy+0x118/0x218 [ 19.200798] kmem_cache_double_destroy+0x128/0x300 [ 19.200849] kunit_try_run_case+0x170/0x3f0 [ 19.200937] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.200982] kthread+0x328/0x630 [ 19.201036] ret_from_fork+0x10/0x20 [ 19.201073] [ 19.201095] The buggy address belongs to the object at fff00000c6e5a140 [ 19.201095] which belongs to the cache kmem_cache of size 208 [ 19.201153] The buggy address is located 0 bytes inside of [ 19.201153] freed 208-byte region [fff00000c6e5a140, fff00000c6e5a210) [ 19.201289] [ 19.201314] The buggy address belongs to the physical page: [ 19.201356] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106e5a [ 19.201409] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.201579] page_type: f5(slab) [ 19.201622] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 19.201671] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 19.201710] page dumped because: kasan: bad access detected [ 19.201742] [ 19.201759] Memory state around the buggy address: [ 19.201832] fff00000c6e5a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.201877] fff00000c6e5a080: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 19.201940] >fff00000c6e5a100: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 19.202065] ^ [ 19.202098] fff00000c6e5a180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.202211] fff00000c6e5a200: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.202349] ==================================================================
[ 12.156829] ================================================================== [ 12.157331] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.157620] Read of size 1 at addr ffff8881010b3500 by task kunit_try_catch/235 [ 12.158678] [ 12.158964] CPU: 1 UID: 0 PID: 235 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT(voluntary) [ 12.159033] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.159045] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.159070] Call Trace: [ 12.159084] <TASK> [ 12.159102] dump_stack_lvl+0x73/0xb0 [ 12.159131] print_report+0xd1/0x650 [ 12.159155] ? __virt_addr_valid+0x1db/0x2d0 [ 12.159178] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.159200] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.159224] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.159246] kasan_report+0x141/0x180 [ 12.159270] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.159295] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.159317] __kasan_check_byte+0x3d/0x50 [ 12.159340] kmem_cache_destroy+0x25/0x1d0 [ 12.159366] kmem_cache_double_destroy+0x1bf/0x380 [ 12.159388] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.159421] ? finish_task_switch.isra.0+0x153/0x700 [ 12.159446] ? __switch_to+0x5d9/0xf60 [ 12.159468] ? dequeue_task_fair+0x166/0x4e0 [ 12.159507] ? __pfx_read_tsc+0x10/0x10 [ 12.159527] ? ktime_get_ts64+0x86/0x230 [ 12.159554] kunit_try_run_case+0x1a5/0x480 [ 12.159584] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.159603] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.159629] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.159654] ? __kthread_parkme+0x82/0x180 [ 12.159677] ? preempt_count_sub+0x50/0x80 [ 12.159702] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.159723] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.159746] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.159771] kthread+0x337/0x6f0 [ 12.159788] ? trace_preempt_on+0x20/0xc0 [ 12.159812] ? __pfx_kthread+0x10/0x10 [ 12.159831] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.159855] ? calculate_sigpending+0x7b/0xa0 [ 12.159886] ? __pfx_kthread+0x10/0x10 [ 12.159906] ret_from_fork+0x41/0x80 [ 12.159927] ? __pfx_kthread+0x10/0x10 [ 12.159946] ret_from_fork_asm+0x1a/0x30 [ 12.159978] </TASK> [ 12.159990] [ 12.173290] Allocated by task 235: [ 12.173639] kasan_save_stack+0x45/0x70 [ 12.174079] kasan_save_track+0x18/0x40 [ 12.174437] kasan_save_alloc_info+0x3b/0x50 [ 12.174765] __kasan_slab_alloc+0x91/0xa0 [ 12.175023] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.175427] __kmem_cache_create_args+0x169/0x240 [ 12.176031] kmem_cache_double_destroy+0xd5/0x380 [ 12.176259] kunit_try_run_case+0x1a5/0x480 [ 12.176409] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.176728] kthread+0x337/0x6f0 [ 12.177077] ret_from_fork+0x41/0x80 [ 12.177546] ret_from_fork_asm+0x1a/0x30 [ 12.178016] [ 12.178178] Freed by task 235: [ 12.178457] kasan_save_stack+0x45/0x70 [ 12.178899] kasan_save_track+0x18/0x40 [ 12.179151] kasan_save_free_info+0x3f/0x60 [ 12.179303] __kasan_slab_free+0x56/0x70 [ 12.179442] kmem_cache_free+0x249/0x420 [ 12.179721] slab_kmem_cache_release+0x2e/0x40 [ 12.180263] kmem_cache_release+0x16/0x20 [ 12.180701] kobject_put+0x181/0x450 [ 12.181159] sysfs_slab_release+0x16/0x20 [ 12.181561] kmem_cache_destroy+0xf0/0x1d0 [ 12.181957] kmem_cache_double_destroy+0x14e/0x380 [ 12.182451] kunit_try_run_case+0x1a5/0x480 [ 12.182891] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.183187] kthread+0x337/0x6f0 [ 12.183313] ret_from_fork+0x41/0x80 [ 12.183445] ret_from_fork_asm+0x1a/0x30 [ 12.183733] [ 12.183905] The buggy address belongs to the object at ffff8881010b3500 [ 12.183905] which belongs to the cache kmem_cache of size 208 [ 12.185334] The buggy address is located 0 bytes inside of [ 12.185334] freed 208-byte region [ffff8881010b3500, ffff8881010b35d0) [ 12.186450] [ 12.186591] The buggy address belongs to the physical page: [ 12.186990] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1010b3 [ 12.187562] flags: 0x200000000000000(node=0|zone=2) [ 12.188047] page_type: f5(slab) [ 12.188178] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.188411] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.188921] page dumped because: kasan: bad access detected [ 12.189555] [ 12.189740] Memory state around the buggy address: [ 12.190219] ffff8881010b3400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.190950] ffff8881010b3480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.191538] >ffff8881010b3500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.191760] ^ [ 12.191951] ffff8881010b3580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.192587] ffff8881010b3600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.193420] ==================================================================