Date
July 14, 2025, 10:38 a.m.
| Environment | |
|---|---|
| e850-96 | |
| qemu-arm64 | |
| qemu-x86_64 |
[ 50.620669] ================================================================== [ 50.620859] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 50.621005] Read of size 1 at addr ffff000801b48640 by task kunit_try_catch/299 [ 50.624555] [ 50.626042] CPU: 4 UID: 0 PID: 299 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250714 #1 PREEMPT [ 50.626099] Tainted: [B]=BAD_PAGE, [N]=TEST [ 50.626115] Hardware name: WinLink E850-96 board (DT) [ 50.626139] Call trace: [ 50.626151] show_stack+0x20/0x38 (C) [ 50.626188] dump_stack_lvl+0x8c/0xd0 [ 50.626223] print_report+0x118/0x5d0 [ 50.626253] kasan_report+0xdc/0x128 [ 50.626281] __kasan_check_byte+0x54/0x70 [ 50.626311] kmem_cache_destroy+0x34/0x218 [ 50.626346] kmem_cache_double_destroy+0x174/0x300 [ 50.626383] kunit_try_run_case+0x170/0x3f0 [ 50.626419] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 50.626454] kthread+0x328/0x630 [ 50.626485] ret_from_fork+0x10/0x20 [ 50.626523] [ 50.693998] Allocated by task 299: [ 50.697385] kasan_save_stack+0x3c/0x68 [ 50.701202] kasan_save_track+0x20/0x40 [ 50.705023] kasan_save_alloc_info+0x40/0x58 [ 50.709275] __kasan_slab_alloc+0xa8/0xb0 [ 50.713270] kmem_cache_alloc_noprof+0x10c/0x398 [ 50.717869] __kmem_cache_create_args+0x178/0x280 [ 50.722556] kmem_cache_double_destroy+0xc0/0x300 [ 50.727244] kunit_try_run_case+0x170/0x3f0 [ 50.731412] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 50.736879] kthread+0x328/0x630 [ 50.740091] ret_from_fork+0x10/0x20 [ 50.743649] [ 50.745126] Freed by task 299: [ 50.748165] kasan_save_stack+0x3c/0x68 [ 50.751984] kasan_save_track+0x20/0x40 [ 50.755802] kasan_save_free_info+0x4c/0x78 [ 50.759969] __kasan_slab_free+0x6c/0x98 [ 50.763876] kmem_cache_free+0x260/0x468 [ 50.767781] slab_kmem_cache_release+0x38/0x50 [ 50.772208] kmem_cache_release+0x1c/0x30 [ 50.776201] kobject_put+0x17c/0x420 [ 50.779760] sysfs_slab_release+0x1c/0x30 [ 50.783753] kmem_cache_destroy+0x118/0x218 [ 50.787920] kmem_cache_double_destroy+0x128/0x300 [ 50.792694] kunit_try_run_case+0x170/0x3f0 [ 50.796861] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 50.802329] kthread+0x328/0x630 [ 50.805541] ret_from_fork+0x10/0x20 [ 50.809100] [ 50.810577] The buggy address belongs to the object at ffff000801b48640 [ 50.810577] which belongs to the cache kmem_cache of size 208 [ 50.822991] The buggy address is located 0 bytes inside of [ 50.822991] freed 208-byte region [ffff000801b48640, ffff000801b48710) [ 50.835054] [ 50.836534] The buggy address belongs to the physical page: [ 50.842091] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x881b48 [ 50.850074] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 50.857714] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 50.864658] page_type: f5(slab) [ 50.867793] raw: 0bfffe0000000040 ffff000800002000 dead000000000122 0000000000000000 [ 50.875512] raw: 0000000000000000 0000000080190019 00000000f5000000 0000000000000000 [ 50.883240] head: 0bfffe0000000040 ffff000800002000 dead000000000122 0000000000000000 [ 50.891050] head: 0000000000000000 0000000080190019 00000000f5000000 0000000000000000 [ 50.898863] head: 0bfffe0000000001 fffffdffe006d201 00000000ffffffff 00000000ffffffff [ 50.906675] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 50.914482] page dumped because: kasan: bad access detected [ 50.920036] [ 50.921513] Memory state around the buggy address: [ 50.926295] ffff000801b48500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 50.933494] ffff000801b48580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 50.940701] >ffff000801b48600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 50.947900] ^ [ 50.953198] ffff000801b48680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 50.960403] ffff000801b48700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 50.967606] ==================================================================
[ 31.011465] ================================================================== [ 31.011547] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 31.011619] Read of size 1 at addr fff00000c56878c0 by task kunit_try_catch/246 [ 31.012486] [ 31.012904] CPU: 0 UID: 0 PID: 246 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250714 #1 PREEMPT [ 31.013193] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.013282] Hardware name: linux,dummy-virt (DT) [ 31.013656] Call trace: [ 31.013778] show_stack+0x20/0x38 (C) [ 31.013840] dump_stack_lvl+0x8c/0xd0 [ 31.014284] print_report+0x118/0x5d0 [ 31.014443] kasan_report+0xdc/0x128 [ 31.014772] __kasan_check_byte+0x54/0x70 [ 31.014930] kmem_cache_destroy+0x34/0x218 [ 31.015018] kmem_cache_double_destroy+0x174/0x300 [ 31.015451] kunit_try_run_case+0x170/0x3f0 [ 31.015528] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.015783] kthread+0x328/0x630 [ 31.016105] ret_from_fork+0x10/0x20 [ 31.016254] [ 31.016343] Allocated by task 246: [ 31.016472] kasan_save_stack+0x3c/0x68 [ 31.016592] kasan_save_track+0x20/0x40 [ 31.016968] kasan_save_alloc_info+0x40/0x58 [ 31.017237] __kasan_slab_alloc+0xa8/0xb0 [ 31.017336] kmem_cache_alloc_noprof+0x10c/0x398 [ 31.017392] __kmem_cache_create_args+0x178/0x280 [ 31.017713] kmem_cache_double_destroy+0xc0/0x300 [ 31.017819] kunit_try_run_case+0x170/0x3f0 [ 31.018112] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.018196] kthread+0x328/0x630 [ 31.018288] ret_from_fork+0x10/0x20 [ 31.018471] [ 31.018609] Freed by task 246: [ 31.018747] kasan_save_stack+0x3c/0x68 [ 31.018918] kasan_save_track+0x20/0x40 [ 31.018993] kasan_save_free_info+0x4c/0x78 [ 31.019035] __kasan_slab_free+0x6c/0x98 [ 31.019245] kmem_cache_free+0x260/0x468 [ 31.019414] slab_kmem_cache_release+0x38/0x50 [ 31.019873] kmem_cache_release+0x1c/0x30 [ 31.019986] kobject_put+0x17c/0x420 [ 31.020419] sysfs_slab_release+0x1c/0x30 [ 31.020498] kmem_cache_destroy+0x118/0x218 [ 31.020668] kmem_cache_double_destroy+0x128/0x300 [ 31.020759] kunit_try_run_case+0x170/0x3f0 [ 31.020905] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.021155] kthread+0x328/0x630 [ 31.021400] ret_from_fork+0x10/0x20 [ 31.021469] [ 31.021576] The buggy address belongs to the object at fff00000c56878c0 [ 31.021576] which belongs to the cache kmem_cache of size 208 [ 31.021681] The buggy address is located 0 bytes inside of [ 31.021681] freed 208-byte region [fff00000c56878c0, fff00000c5687990) [ 31.021812] [ 31.021953] The buggy address belongs to the physical page: [ 31.022027] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105687 [ 31.022455] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.022693] page_type: f5(slab) [ 31.022858] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 31.023095] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 31.023169] page dumped because: kasan: bad access detected [ 31.023325] [ 31.023410] Memory state around the buggy address: [ 31.023480] fff00000c5687780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.023716] fff00000c5687800: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 31.024022] >fff00000c5687880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 31.024151] ^ [ 31.024214] fff00000c5687900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.024387] fff00000c5687980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.024619] ==================================================================
[ 25.153563] ================================================================== [ 25.154397] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 25.155056] Read of size 1 at addr ffff888100faadc0 by task kunit_try_catch/264 [ 25.155277] [ 25.155369] CPU: 0 UID: 0 PID: 264 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc6-next-20250714 #1 PREEMPT(voluntary) [ 25.155425] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 25.155439] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.155464] Call Trace: [ 25.155479] <TASK> [ 25.155501] dump_stack_lvl+0x73/0xb0 [ 25.155535] print_report+0xd1/0x610 [ 25.155560] ? __virt_addr_valid+0x1db/0x2d0 [ 25.155585] ? kmem_cache_double_destroy+0x1bf/0x380 [ 25.155609] ? kasan_complete_mode_report_info+0x64/0x200 [ 25.155635] ? kmem_cache_double_destroy+0x1bf/0x380 [ 25.155674] kasan_report+0x141/0x180 [ 25.155696] ? kmem_cache_double_destroy+0x1bf/0x380 [ 25.155723] ? kmem_cache_double_destroy+0x1bf/0x380 [ 25.155748] __kasan_check_byte+0x3d/0x50 [ 25.155769] kmem_cache_destroy+0x25/0x1d0 [ 25.155796] kmem_cache_double_destroy+0x1bf/0x380 [ 25.155820] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 25.155843] ? finish_task_switch.isra.0+0x153/0x700 [ 25.155866] ? __switch_to+0x47/0xf80 [ 25.155895] ? __pfx_read_tsc+0x10/0x10 [ 25.155916] ? ktime_get_ts64+0x86/0x230 [ 25.155962] kunit_try_run_case+0x1a5/0x480 [ 25.155986] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.156007] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.156031] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.156055] ? __kthread_parkme+0x82/0x180 [ 25.156075] ? preempt_count_sub+0x50/0x80 [ 25.156098] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.156119] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.156144] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.156169] kthread+0x337/0x6f0 [ 25.156188] ? trace_preempt_on+0x20/0xc0 [ 25.156212] ? __pfx_kthread+0x10/0x10 [ 25.156232] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.156253] ? calculate_sigpending+0x7b/0xa0 [ 25.156278] ? __pfx_kthread+0x10/0x10 [ 25.156298] ret_from_fork+0x116/0x1d0 [ 25.156318] ? __pfx_kthread+0x10/0x10 [ 25.156337] ret_from_fork_asm+0x1a/0x30 [ 25.156369] </TASK> [ 25.156380] [ 25.168817] Allocated by task 264: [ 25.168974] kasan_save_stack+0x45/0x70 [ 25.169132] kasan_save_track+0x18/0x40 [ 25.169535] kasan_save_alloc_info+0x3b/0x50 [ 25.169964] __kasan_slab_alloc+0x91/0xa0 [ 25.170416] kmem_cache_alloc_noprof+0x123/0x3f0 [ 25.170884] __kmem_cache_create_args+0x169/0x240 [ 25.171489] kmem_cache_double_destroy+0xd5/0x380 [ 25.171668] kunit_try_run_case+0x1a5/0x480 [ 25.171884] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.172380] kthread+0x337/0x6f0 [ 25.172721] ret_from_fork+0x116/0x1d0 [ 25.173208] ret_from_fork_asm+0x1a/0x30 [ 25.173636] [ 25.173794] Freed by task 264: [ 25.174075] kasan_save_stack+0x45/0x70 [ 25.174204] kasan_save_track+0x18/0x40 [ 25.174666] kasan_save_free_info+0x3f/0x60 [ 25.175079] __kasan_slab_free+0x56/0x70 [ 25.175251] kmem_cache_free+0x249/0x420 [ 25.175378] slab_kmem_cache_release+0x2e/0x40 [ 25.175519] kmem_cache_release+0x16/0x20 [ 25.175649] kobject_put+0x181/0x450 [ 25.176154] sysfs_slab_release+0x16/0x20 [ 25.176538] kmem_cache_destroy+0xf0/0x1d0 [ 25.176957] kmem_cache_double_destroy+0x14e/0x380 [ 25.177442] kunit_try_run_case+0x1a5/0x480 [ 25.177861] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.178386] kthread+0x337/0x6f0 [ 25.178753] ret_from_fork+0x116/0x1d0 [ 25.179282] ret_from_fork_asm+0x1a/0x30 [ 25.179510] [ 25.179575] The buggy address belongs to the object at ffff888100faadc0 [ 25.179575] which belongs to the cache kmem_cache of size 208 [ 25.180330] The buggy address is located 0 bytes inside of [ 25.180330] freed 208-byte region [ffff888100faadc0, ffff888100faae90) [ 25.181414] [ 25.181644] The buggy address belongs to the physical page: [ 25.182004] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100faa [ 25.182610] flags: 0x200000000000000(node=0|zone=2) [ 25.182870] page_type: f5(slab) [ 25.183198] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 25.184141] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 25.184497] page dumped because: kasan: bad access detected [ 25.184670] [ 25.184731] Memory state around the buggy address: [ 25.185193] ffff888100faac80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.185858] ffff888100faad00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 25.186543] >ffff888100faad80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 25.187229] ^ [ 25.187621] ffff888100faae00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.187986] ffff888100faae80: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.188637] ==================================================================