Date
May 26, 2025, 9:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.181764] ================================================================== [ 19.181878] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 19.181971] Read of size 1 at addr fff00000c794a280 by task kunit_try_catch/215 [ 19.182030] [ 19.182079] CPU: 0 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7-next-20250526 #1 PREEMPT [ 19.182180] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.182210] Hardware name: linux,dummy-virt (DT) [ 19.182248] Call trace: [ 19.182279] show_stack+0x20/0x38 (C) [ 19.182355] dump_stack_lvl+0x8c/0xd0 [ 19.182418] print_report+0x118/0x608 [ 19.182472] kasan_report+0xdc/0x128 [ 19.182522] __kasan_check_byte+0x54/0x70 [ 19.182574] kmem_cache_destroy+0x34/0x218 [ 19.182627] kmem_cache_double_destroy+0x174/0x300 [ 19.182680] kunit_try_run_case+0x170/0x3f0 [ 19.182736] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.182798] kthread+0x328/0x630 [ 19.182847] ret_from_fork+0x10/0x20 [ 19.182898] [ 19.182920] Allocated by task 215: [ 19.182952] kasan_save_stack+0x3c/0x68 [ 19.182999] kasan_save_track+0x20/0x40 [ 19.183038] kasan_save_alloc_info+0x40/0x58 [ 19.183078] __kasan_slab_alloc+0xa8/0xb0 [ 19.183115] kmem_cache_alloc_noprof+0x10c/0x3a0 [ 19.183158] __kmem_cache_create_args+0x178/0x280 [ 19.183196] kmem_cache_double_destroy+0xc0/0x300 [ 19.183236] kunit_try_run_case+0x170/0x3f0 [ 19.183275] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.183327] kthread+0x328/0x630 [ 19.183365] ret_from_fork+0x10/0x20 [ 19.183404] [ 19.183425] Freed by task 215: [ 19.183452] kasan_save_stack+0x3c/0x68 [ 19.183492] kasan_save_track+0x20/0x40 [ 19.183528] kasan_save_free_info+0x4c/0x78 [ 19.183569] __kasan_slab_free+0x6c/0x98 [ 19.183608] kmem_cache_free+0x260/0x470 [ 19.183644] slab_kmem_cache_release+0x38/0x50 [ 19.183685] kmem_cache_release+0x1c/0x30 [ 19.183721] kobject_put+0x17c/0x430 [ 19.183758] sysfs_slab_release+0x1c/0x30 [ 19.183795] kmem_cache_destroy+0x118/0x218 [ 19.183834] kmem_cache_double_destroy+0x128/0x300 [ 19.183873] kunit_try_run_case+0x170/0x3f0 [ 19.183913] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.183957] kthread+0x328/0x630 [ 19.183989] ret_from_fork+0x10/0x20 [ 19.184025] [ 19.184047] The buggy address belongs to the object at fff00000c794a280 [ 19.184047] which belongs to the cache kmem_cache of size 208 [ 19.184108] The buggy address is located 0 bytes inside of [ 19.184108] freed 208-byte region [fff00000c794a280, fff00000c794a350) [ 19.184170] [ 19.184193] The buggy address belongs to the physical page: [ 19.184228] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10794a [ 19.184285] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.184350] page_type: f5(slab) [ 19.184400] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 19.184463] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 19.184512] page dumped because: kasan: bad access detected [ 19.184546] [ 19.184569] Memory state around the buggy address: [ 19.184604] fff00000c794a180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.184649] fff00000c794a200: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.184693] >fff00000c794a280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.184730] ^ [ 19.184762] fff00000c794a300: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 19.184807] fff00000c794a380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.184849] ==================================================================
[ 11.835580] ================================================================== [ 11.836627] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 11.837830] Read of size 1 at addr ffff8881017ca3c0 by task kunit_try_catch/233 [ 11.838103] [ 11.838201] CPU: 1 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7-next-20250526 #1 PREEMPT(voluntary) [ 11.838252] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.838264] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.838289] Call Trace: [ 11.838304] <TASK> [ 11.838323] dump_stack_lvl+0x73/0xb0 [ 11.838357] print_report+0xd1/0x650 [ 11.838393] ? __virt_addr_valid+0x1db/0x2d0 [ 11.838419] ? kmem_cache_double_destroy+0x1bf/0x380 [ 11.838440] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.838463] ? kmem_cache_double_destroy+0x1bf/0x380 [ 11.838484] kasan_report+0x141/0x180 [ 11.838507] ? kmem_cache_double_destroy+0x1bf/0x380 [ 11.838530] ? kmem_cache_double_destroy+0x1bf/0x380 [ 11.838552] __kasan_check_byte+0x3d/0x50 [ 11.838574] kmem_cache_destroy+0x25/0x1d0 [ 11.838599] kmem_cache_double_destroy+0x1bf/0x380 [ 11.838620] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 11.838641] ? finish_task_switch.isra.0+0x153/0x700 [ 11.838678] ? __switch_to+0x47/0xf50 [ 11.838706] ? __pfx_read_tsc+0x10/0x10 [ 11.838729] ? ktime_get_ts64+0x86/0x230 [ 11.838753] kunit_try_run_case+0x1a5/0x480 [ 11.838777] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.838796] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.838822] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.838847] ? __kthread_parkme+0x82/0x180 [ 11.838868] ? preempt_count_sub+0x50/0x80 [ 11.838893] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.838913] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.838937] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.838961] kthread+0x337/0x6f0 [ 11.838980] ? trace_preempt_on+0x20/0xc0 [ 11.839005] ? __pfx_kthread+0x10/0x10 [ 11.839024] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.839047] ? calculate_sigpending+0x7b/0xa0 [ 11.839071] ? __pfx_kthread+0x10/0x10 [ 11.839093] ret_from_fork+0x116/0x1d0 [ 11.839122] ? __pfx_kthread+0x10/0x10 [ 11.839142] ret_from_fork_asm+0x1a/0x30 [ 11.839172] </TASK> [ 11.839183] [ 11.854268] Allocated by task 233: [ 11.854688] kasan_save_stack+0x45/0x70 [ 11.854903] kasan_save_track+0x18/0x40 [ 11.855067] kasan_save_alloc_info+0x3b/0x50 [ 11.855460] __kasan_slab_alloc+0x91/0xa0 [ 11.855858] kmem_cache_alloc_noprof+0x123/0x3f0 [ 11.856415] __kmem_cache_create_args+0x169/0x240 [ 11.856836] kmem_cache_double_destroy+0xd5/0x380 [ 11.857348] kunit_try_run_case+0x1a5/0x480 [ 11.857745] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.858036] kthread+0x337/0x6f0 [ 11.858356] ret_from_fork+0x116/0x1d0 [ 11.858724] ret_from_fork_asm+0x1a/0x30 [ 11.858871] [ 11.858939] Freed by task 233: [ 11.859143] kasan_save_stack+0x45/0x70 [ 11.859534] kasan_save_track+0x18/0x40 [ 11.859986] kasan_save_free_info+0x3f/0x60 [ 11.860496] __kasan_slab_free+0x56/0x70 [ 11.860713] kmem_cache_free+0x249/0x420 [ 11.861182] slab_kmem_cache_release+0x2e/0x40 [ 11.861506] kmem_cache_release+0x16/0x20 [ 11.861742] kobject_put+0x181/0x450 [ 11.862133] sysfs_slab_release+0x16/0x20 [ 11.862465] kmem_cache_destroy+0xf0/0x1d0 [ 11.862607] kmem_cache_double_destroy+0x14e/0x380 [ 11.863151] kunit_try_run_case+0x1a5/0x480 [ 11.863598] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.863796] kthread+0x337/0x6f0 [ 11.864180] ret_from_fork+0x116/0x1d0 [ 11.864612] ret_from_fork_asm+0x1a/0x30 [ 11.864984] [ 11.865099] The buggy address belongs to the object at ffff8881017ca3c0 [ 11.865099] which belongs to the cache kmem_cache of size 208 [ 11.865454] The buggy address is located 0 bytes inside of [ 11.865454] freed 208-byte region [ffff8881017ca3c0, ffff8881017ca490) [ 11.865963] [ 11.866057] The buggy address belongs to the physical page: [ 11.866612] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1017ca [ 11.867440] flags: 0x200000000000000(node=0|zone=2) [ 11.867900] page_type: f5(slab) [ 11.868034] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 11.868788] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 11.869028] page dumped because: kasan: bad access detected [ 11.869559] [ 11.869720] Memory state around the buggy address: [ 11.870184] ffff8881017ca280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.870409] ffff8881017ca300: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 11.870617] >ffff8881017ca380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 11.870840] ^ [ 11.871170] ffff8881017ca400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.871424] ffff8881017ca480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.871774] ==================================================================