Date
June 2, 2025, 2:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.787650] ================================================================== [ 19.788313] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x17c/0x2f8 [ 19.788797] Read of size 1 at addr fff00000c1b49a00 by task kunit_try_catch/205 [ 19.789139] [ 19.789320] CPU: 0 UID: 0 PID: 205 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 19.789421] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.789455] Hardware name: linux,dummy-virt (DT) [ 19.789495] Call trace: [ 19.789538] show_stack+0x20/0x38 (C) [ 19.789603] dump_stack_lvl+0x8c/0xd0 [ 19.789663] print_report+0x118/0x608 [ 19.789718] kasan_report+0xdc/0x128 [ 19.789768] __kasan_check_byte+0x54/0x70 [ 19.789821] kmem_cache_destroy+0x34/0x218 [ 19.789875] kmem_cache_double_destroy+0x17c/0x2f8 [ 19.789929] kunit_try_run_case+0x170/0x3f0 [ 19.789983] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.790040] kthread+0x318/0x620 [ 19.790123] ret_from_fork+0x10/0x20 [ 19.790189] [ 19.793130] Allocated by task 205: [ 19.793457] kasan_save_stack+0x3c/0x68 [ 19.793666] kasan_save_track+0x20/0x40 [ 19.793959] kasan_save_alloc_info+0x40/0x58 [ 19.794251] __kasan_slab_alloc+0xa8/0xb0 [ 19.794503] kmem_cache_alloc_noprof+0x10c/0x398 [ 19.794762] __kmem_cache_create_args+0x18c/0x2b0 [ 19.795180] kmem_cache_double_destroy+0xc8/0x2f8 [ 19.795423] kunit_try_run_case+0x170/0x3f0 [ 19.795784] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.796025] kthread+0x318/0x620 [ 19.796355] ret_from_fork+0x10/0x20 [ 19.796583] [ 19.796757] Freed by task 205: [ 19.796923] kasan_save_stack+0x3c/0x68 [ 19.797237] kasan_save_track+0x20/0x40 [ 19.797460] kasan_save_free_info+0x4c/0x78 [ 19.797733] __kasan_slab_free+0x6c/0x98 [ 19.797992] kmem_cache_free+0x260/0x468 [ 19.798246] slab_kmem_cache_release+0x38/0x50 [ 19.798532] kmem_cache_release+0x1c/0x30 [ 19.798794] kobject_put+0x17c/0x420 [ 19.799022] sysfs_slab_release+0x1c/0x30 [ 19.799268] kmem_cache_destroy+0x118/0x218 [ 19.799552] kmem_cache_double_destroy+0x130/0x2f8 [ 19.799837] kunit_try_run_case+0x170/0x3f0 [ 19.800062] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.800347] kthread+0x318/0x620 [ 19.800596] ret_from_fork+0x10/0x20 [ 19.800855] [ 19.801007] The buggy address belongs to the object at fff00000c1b49a00 [ 19.801007] which belongs to the cache kmem_cache of size 208 [ 19.801561] The buggy address is located 0 bytes inside of [ 19.801561] freed 208-byte region [fff00000c1b49a00, fff00000c1b49ad0) [ 19.802122] [ 19.802330] The buggy address belongs to the physical page: [ 19.802547] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101b49 [ 19.802927] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.803330] page_type: f5(slab) [ 19.803597] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 19.803970] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 19.804324] page dumped because: kasan: bad access detected [ 19.804579] [ 19.804764] Memory state around the buggy address: [ 19.805027] fff00000c1b49900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.805407] fff00000c1b49980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.805723] >fff00000c1b49a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.806276] ^ [ 19.806558] fff00000c1b49a80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 19.807036] fff00000c1b49b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.807542] ==================================================================
[ 13.530679] ================================================================== [ 13.531275] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bd/0x380 [ 13.531539] Read of size 1 at addr ffff888101b628c0 by task kunit_try_catch/223 [ 13.532407] [ 13.532586] CPU: 1 UID: 0 PID: 223 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 13.532629] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.532641] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.532664] Call Trace: [ 13.532677] <TASK> [ 13.532695] dump_stack_lvl+0x73/0xb0 [ 13.532724] print_report+0xd1/0x650 [ 13.532745] ? __virt_addr_valid+0x1db/0x2d0 [ 13.532769] ? kmem_cache_double_destroy+0x1bd/0x380 [ 13.532792] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.532818] ? kmem_cache_double_destroy+0x1bd/0x380 [ 13.532843] kasan_report+0x140/0x180 [ 13.532902] ? kmem_cache_double_destroy+0x1bd/0x380 [ 13.532931] ? kmem_cache_double_destroy+0x1bd/0x380 [ 13.532956] __kasan_check_byte+0x3d/0x50 [ 13.532978] kmem_cache_destroy+0x25/0x1d0 [ 13.533000] kmem_cache_double_destroy+0x1bd/0x380 [ 13.533036] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 13.533060] ? finish_task_switch.isra.0+0x153/0x700 [ 13.533084] ? __switch_to+0x5d9/0xf60 [ 13.533110] ? __pfx_empty_cache_ctor+0x10/0x10 [ 13.533131] ? __pfx_read_tsc+0x10/0x10 [ 13.533152] ? ktime_get_ts64+0x86/0x230 [ 13.533178] kunit_try_run_case+0x1a6/0x480 [ 13.533202] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.533224] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 13.533248] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.533273] ? __kthread_parkme+0x82/0x160 [ 13.533295] ? preempt_count_sub+0x50/0x80 [ 13.533319] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.533342] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.533368] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.533395] kthread+0x324/0x6e0 [ 13.533415] ? trace_preempt_on+0x20/0xc0 [ 13.533440] ? __pfx_kthread+0x10/0x10 [ 13.533461] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.533484] ? calculate_sigpending+0x7b/0xa0 [ 13.533507] ? __pfx_kthread+0x10/0x10 [ 13.533529] ret_from_fork+0x41/0x80 [ 13.533548] ? __pfx_kthread+0x10/0x10 [ 13.533569] ret_from_fork_asm+0x1a/0x30 [ 13.533601] </TASK> [ 13.533611] [ 13.546272] Allocated by task 223: [ 13.546403] kasan_save_stack+0x45/0x70 [ 13.546549] kasan_save_track+0x18/0x40 [ 13.546688] kasan_save_alloc_info+0x3b/0x50 [ 13.547035] __kasan_slab_alloc+0x91/0xa0 [ 13.547181] kmem_cache_alloc_noprof+0x124/0x400 [ 13.547332] __kmem_cache_create_args+0x177/0x250 [ 13.547481] kmem_cache_double_destroy+0xd3/0x380 [ 13.547633] kunit_try_run_case+0x1a6/0x480 [ 13.548143] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.548359] kthread+0x324/0x6e0 [ 13.548516] ret_from_fork+0x41/0x80 [ 13.548929] ret_from_fork_asm+0x1a/0x30 [ 13.549112] [ 13.549202] Freed by task 223: [ 13.549348] kasan_save_stack+0x45/0x70 [ 13.549519] kasan_save_track+0x18/0x40 [ 13.550053] kasan_save_free_info+0x3f/0x60 [ 13.550458] __kasan_slab_free+0x56/0x70 [ 13.550773] kmem_cache_free+0x24b/0x420 [ 13.551113] slab_kmem_cache_release+0x2e/0x40 [ 13.551342] kmem_cache_release+0x16/0x20 [ 13.551812] kobject_put+0x181/0x450 [ 13.552172] sysfs_slab_release+0x16/0x20 [ 13.552567] kmem_cache_destroy+0xf0/0x1d0 [ 13.552891] kmem_cache_double_destroy+0x14c/0x380 [ 13.553258] kunit_try_run_case+0x1a6/0x480 [ 13.553457] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.554105] kthread+0x324/0x6e0 [ 13.554323] ret_from_fork+0x41/0x80 [ 13.554638] ret_from_fork_asm+0x1a/0x30 [ 13.555116] [ 13.555364] The buggy address belongs to the object at ffff888101b628c0 [ 13.555364] which belongs to the cache kmem_cache of size 208 [ 13.556286] The buggy address is located 0 bytes inside of [ 13.556286] freed 208-byte region [ffff888101b628c0, ffff888101b62990) [ 13.557232] [ 13.557346] The buggy address belongs to the physical page: [ 13.557794] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101b62 [ 13.558242] flags: 0x200000000000000(node=0|zone=2) [ 13.558462] page_type: f5(slab) [ 13.558872] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 13.559553] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 13.559870] page dumped because: kasan: bad access detected [ 13.560101] [ 13.560185] Memory state around the buggy address: [ 13.560390] ffff888101b62780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.561039] ffff888101b62800: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 13.561559] >ffff888101b62880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 13.562230] ^ [ 13.562547] ffff888101b62900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.563240] ffff888101b62980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.563515] ==================================================================