Date
May 12, 2025, 11:48 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.155369] ================================================================== [ 18.156099] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 18.156303] Read of size 1 at addr fff00000c1096c80 by task kunit_try_catch/215 [ 18.156403] [ 18.156659] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT [ 18.157385] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.157456] Hardware name: linux,dummy-virt (DT) [ 18.157533] Call trace: [ 18.157588] show_stack+0x20/0x38 (C) [ 18.157703] dump_stack_lvl+0x8c/0xd0 [ 18.158434] print_report+0x118/0x608 [ 18.158717] kasan_report+0xdc/0x128 [ 18.159197] __kasan_check_byte+0x54/0x70 [ 18.159392] kmem_cache_destroy+0x34/0x218 [ 18.159807] kmem_cache_double_destroy+0x174/0x300 [ 18.160088] kunit_try_run_case+0x170/0x3f0 [ 18.160207] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.160315] kthread+0x328/0x630 [ 18.160793] ret_from_fork+0x10/0x20 [ 18.161125] [ 18.161385] Allocated by task 215: [ 18.161478] kasan_save_stack+0x3c/0x68 [ 18.161562] kasan_save_track+0x20/0x40 [ 18.161637] kasan_save_alloc_info+0x40/0x58 [ 18.161720] __kasan_slab_alloc+0xa8/0xb0 [ 18.161998] kmem_cache_alloc_noprof+0x10c/0x3a0 [ 18.162317] __kmem_cache_create_args+0x178/0x280 [ 18.162777] kmem_cache_double_destroy+0xc0/0x300 [ 18.162882] kunit_try_run_case+0x170/0x3f0 [ 18.163201] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.163445] kthread+0x328/0x630 [ 18.163579] ret_from_fork+0x10/0x20 [ 18.163722] [ 18.163761] Freed by task 215: [ 18.163998] kasan_save_stack+0x3c/0x68 [ 18.164284] kasan_save_track+0x20/0x40 [ 18.164381] kasan_save_free_info+0x4c/0x78 [ 18.164656] __kasan_slab_free+0x6c/0x98 [ 18.164767] kmem_cache_free+0x260/0x470 [ 18.164841] slab_kmem_cache_release+0x38/0x50 [ 18.165311] kmem_cache_release+0x1c/0x30 [ 18.165407] kobject_put+0x17c/0x430 [ 18.166047] sysfs_slab_release+0x1c/0x30 [ 18.166208] kmem_cache_destroy+0x118/0x218 [ 18.166467] kmem_cache_double_destroy+0x128/0x300 [ 18.166550] kunit_try_run_case+0x170/0x3f0 [ 18.166632] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.166713] kthread+0x328/0x630 [ 18.167132] ret_from_fork+0x10/0x20 [ 18.167216] [ 18.167627] The buggy address belongs to the object at fff00000c1096c80 [ 18.167627] which belongs to the cache kmem_cache of size 208 [ 18.167765] The buggy address is located 0 bytes inside of [ 18.167765] freed 208-byte region [fff00000c1096c80, fff00000c1096d50) [ 18.168157] [ 18.168317] The buggy address belongs to the physical page: [ 18.168389] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101096 [ 18.168732] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.168856] page_type: f5(slab) [ 18.168935] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 18.169055] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 18.169797] page dumped because: kasan: bad access detected [ 18.170008] [ 18.170275] Memory state around the buggy address: [ 18.170539] fff00000c1096b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.170745] fff00000c1096c00: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.170847] >fff00000c1096c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.170985] ^ [ 18.171078] fff00000c1096d00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 18.171382] fff00000c1096d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.171490] ==================================================================
[ 17.716570] ================================================================== [ 17.717352] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 17.717924] Read of size 1 at addr ffff888102b5a140 by task kunit_try_catch/232 [ 17.718320] [ 17.718445] CPU: 1 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT(voluntary) [ 17.718509] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.718523] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 17.718550] Call Trace: [ 17.718567] <TASK> [ 17.718591] dump_stack_lvl+0x73/0xb0 [ 17.718636] print_report+0xd1/0x650 [ 17.718664] ? __virt_addr_valid+0x1db/0x2d0 [ 17.718692] ? kmem_cache_double_destroy+0x1bf/0x380 [ 17.718719] ? kasan_complete_mode_report_info+0x64/0x200 [ 17.718743] ? kmem_cache_double_destroy+0x1bf/0x380 [ 17.719092] kasan_report+0x141/0x180 [ 17.719120] ? kmem_cache_double_destroy+0x1bf/0x380 [ 17.719170] ? kmem_cache_double_destroy+0x1bf/0x380 [ 17.719198] __kasan_check_byte+0x3d/0x50 [ 17.719223] kmem_cache_destroy+0x25/0x1d0 [ 17.719251] kmem_cache_double_destroy+0x1bf/0x380 [ 17.719301] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 17.719328] ? finish_task_switch.isra.0+0x153/0x700 [ 17.719355] ? __switch_to+0x47/0xf50 [ 17.719387] ? __pfx_read_tsc+0x10/0x10 [ 17.719412] ? ktime_get_ts64+0x86/0x230 [ 17.719441] kunit_try_run_case+0x1a5/0x480 [ 17.719472] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.719496] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 17.719522] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 17.719546] ? __kthread_parkme+0x82/0x180 [ 17.719569] ? preempt_count_sub+0x50/0x80 [ 17.719593] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.719618] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.719643] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 17.719667] kthread+0x337/0x6f0 [ 17.719708] ? trace_preempt_on+0x20/0xc0 [ 17.719736] ? __pfx_kthread+0x10/0x10 [ 17.719758] ? _raw_spin_unlock_irq+0x47/0x80 [ 17.719780] ? calculate_sigpending+0x7b/0xa0 [ 17.719807] ? __pfx_kthread+0x10/0x10 [ 17.719830] ret_from_fork+0x116/0x1d0 [ 17.719850] ? __pfx_kthread+0x10/0x10 [ 17.719872] ret_from_fork_asm+0x1a/0x30 [ 17.719906] </TASK> [ 17.719921] [ 17.729239] Allocated by task 232: [ 17.729602] kasan_save_stack+0x45/0x70 [ 17.729923] kasan_save_track+0x18/0x40 [ 17.730103] kasan_save_alloc_info+0x3b/0x50 [ 17.730482] __kasan_slab_alloc+0x91/0xa0 [ 17.730744] kmem_cache_alloc_noprof+0x123/0x3f0 [ 17.731031] __kmem_cache_create_args+0x169/0x240 [ 17.731509] kmem_cache_double_destroy+0xd5/0x380 [ 17.731832] kunit_try_run_case+0x1a5/0x480 [ 17.732173] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.732495] kthread+0x337/0x6f0 [ 17.732741] ret_from_fork+0x116/0x1d0 [ 17.732972] ret_from_fork_asm+0x1a/0x30 [ 17.733421] [ 17.733563] Freed by task 232: [ 17.733838] kasan_save_stack+0x45/0x70 [ 17.734166] kasan_save_track+0x18/0x40 [ 17.734450] kasan_save_free_info+0x3f/0x60 [ 17.734609] __kasan_slab_free+0x56/0x70 [ 17.734871] kmem_cache_free+0x249/0x420 [ 17.735230] slab_kmem_cache_release+0x2e/0x40 [ 17.735386] kmem_cache_release+0x16/0x20 [ 17.735782] kobject_put+0x181/0x450 [ 17.735927] sysfs_slab_release+0x16/0x20 [ 17.736217] kmem_cache_destroy+0xf0/0x1d0 [ 17.736493] kmem_cache_double_destroy+0x14e/0x380 [ 17.736694] kunit_try_run_case+0x1a5/0x480 [ 17.736813] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.737526] kthread+0x337/0x6f0 [ 17.737733] ret_from_fork+0x116/0x1d0 [ 17.737969] ret_from_fork_asm+0x1a/0x30 [ 17.738306] [ 17.738430] The buggy address belongs to the object at ffff888102b5a140 [ 17.738430] which belongs to the cache kmem_cache of size 208 [ 17.738900] The buggy address is located 0 bytes inside of [ 17.738900] freed 208-byte region [ffff888102b5a140, ffff888102b5a210) [ 17.739506] [ 17.739644] The buggy address belongs to the physical page: [ 17.739905] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b5a [ 17.740306] flags: 0x200000000000000(node=0|zone=2) [ 17.740638] page_type: f5(slab) [ 17.740789] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 17.741435] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 17.741755] page dumped because: kasan: bad access detected [ 17.741983] [ 17.742211] Memory state around the buggy address: [ 17.742387] ffff888102b5a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.742731] ffff888102b5a080: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 17.743171] >ffff888102b5a100: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 17.743524] ^ [ 17.743878] ffff888102b5a180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.744118] ffff888102b5a200: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.744519] ==================================================================