Date
July 19, 2025, 11:12 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.333734] ================================================================== [ 17.333794] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x314/0x340 [ 17.333844] Read of size 1 at addr fff00000c78cc240 by task kunit_try_catch/231 [ 17.333893] [ 17.333924] CPU: 0 UID: 0 PID: 231 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.334478] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.334508] Hardware name: linux,dummy-virt (DT) [ 17.334544] Call trace: [ 17.334659] show_stack+0x20/0x38 (C) [ 17.334773] dump_stack_lvl+0x8c/0xd0 [ 17.334887] print_report+0x118/0x5d0 [ 17.334957] kasan_report+0xdc/0x128 [ 17.335002] __asan_report_load1_noabort+0x20/0x30 [ 17.335053] mempool_uaf_helper+0x314/0x340 [ 17.335104] mempool_slab_uaf+0xc0/0x118 [ 17.335314] kunit_try_run_case+0x170/0x3f0 [ 17.335394] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.335454] kthread+0x328/0x630 [ 17.335650] ret_from_fork+0x10/0x20 [ 17.335724] [ 17.335742] Allocated by task 231: [ 17.335769] kasan_save_stack+0x3c/0x68 [ 17.335810] kasan_save_track+0x20/0x40 [ 17.335846] kasan_save_alloc_info+0x40/0x58 [ 17.335886] __kasan_mempool_unpoison_object+0xbc/0x180 [ 17.335928] remove_element+0x16c/0x1f8 [ 17.335965] mempool_alloc_preallocated+0x58/0xc0 [ 17.336004] mempool_uaf_helper+0xa4/0x340 [ 17.336040] mempool_slab_uaf+0xc0/0x118 [ 17.336077] kunit_try_run_case+0x170/0x3f0 [ 17.336120] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.336247] kthread+0x328/0x630 [ 17.336314] ret_from_fork+0x10/0x20 [ 17.336351] [ 17.336369] Freed by task 231: [ 17.336402] kasan_save_stack+0x3c/0x68 [ 17.336571] kasan_save_track+0x20/0x40 [ 17.337472] kasan_save_free_info+0x4c/0x78 [ 17.337594] __kasan_mempool_poison_object+0xc0/0x150 [ 17.337640] mempool_free+0x28c/0x328 [ 17.337673] mempool_uaf_helper+0x104/0x340 [ 17.337718] mempool_slab_uaf+0xc0/0x118 [ 17.337756] kunit_try_run_case+0x170/0x3f0 [ 17.337792] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.337834] kthread+0x328/0x630 [ 17.337865] ret_from_fork+0x10/0x20 [ 17.337901] [ 17.337931] The buggy address belongs to the object at fff00000c78cc240 [ 17.337931] which belongs to the cache test_cache of size 123 [ 17.337988] The buggy address is located 0 bytes inside of [ 17.337988] freed 123-byte region [fff00000c78cc240, fff00000c78cc2bb) [ 17.338048] [ 17.338068] The buggy address belongs to the physical page: [ 17.338100] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078cc [ 17.338151] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.338199] page_type: f5(slab) [ 17.338299] raw: 0bfffe0000000000 fff00000c3e3e640 dead000000000122 0000000000000000 [ 17.338368] raw: 0000000000000000 0000000080150015 00000000f5000000 0000000000000000 [ 17.338410] page dumped because: kasan: bad access detected [ 17.338442] [ 17.338460] Memory state around the buggy address: [ 17.338501] fff00000c78cc100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 17.338659] fff00000c78cc180: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.338731] >fff00000c78cc200: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 17.338953] ^ [ 17.338988] fff00000c78cc280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 17.339033] fff00000c78cc300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.339072] ================================================================== [ 17.311631] ================================================================== [ 17.311710] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x314/0x340 [ 17.311769] Read of size 1 at addr fff00000c63eb900 by task kunit_try_catch/227 [ 17.311818] [ 17.311852] CPU: 0 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.312025] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.312054] Hardware name: linux,dummy-virt (DT) [ 17.312085] Call trace: [ 17.312109] show_stack+0x20/0x38 (C) [ 17.312158] dump_stack_lvl+0x8c/0xd0 [ 17.312206] print_report+0x118/0x5d0 [ 17.312252] kasan_report+0xdc/0x128 [ 17.312297] __asan_report_load1_noabort+0x20/0x30 [ 17.312347] mempool_uaf_helper+0x314/0x340 [ 17.312395] mempool_kmalloc_uaf+0xc4/0x120 [ 17.312440] kunit_try_run_case+0x170/0x3f0 [ 17.312494] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.312567] kthread+0x328/0x630 [ 17.312610] ret_from_fork+0x10/0x20 [ 17.312659] [ 17.312678] Allocated by task 227: [ 17.312717] kasan_save_stack+0x3c/0x68 [ 17.312757] kasan_save_track+0x20/0x40 [ 17.312795] kasan_save_alloc_info+0x40/0x58 [ 17.312844] __kasan_mempool_unpoison_object+0x11c/0x180 [ 17.312887] remove_element+0x130/0x1f8 [ 17.312924] mempool_alloc_preallocated+0x58/0xc0 [ 17.312961] mempool_uaf_helper+0xa4/0x340 [ 17.312998] mempool_kmalloc_uaf+0xc4/0x120 [ 17.313035] kunit_try_run_case+0x170/0x3f0 [ 17.313074] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.313161] kthread+0x328/0x630 [ 17.313196] ret_from_fork+0x10/0x20 [ 17.313232] [ 17.313290] Freed by task 227: [ 17.313345] kasan_save_stack+0x3c/0x68 [ 17.313383] kasan_save_track+0x20/0x40 [ 17.313420] kasan_save_free_info+0x4c/0x78 [ 17.313460] __kasan_mempool_poison_object+0xc0/0x150 [ 17.313501] mempool_free+0x28c/0x328 [ 17.313536] mempool_uaf_helper+0x104/0x340 [ 17.313573] mempool_kmalloc_uaf+0xc4/0x120 [ 17.313614] kunit_try_run_case+0x170/0x3f0 [ 17.313652] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.313715] kthread+0x328/0x630 [ 17.313772] ret_from_fork+0x10/0x20 [ 17.313913] [ 17.313932] The buggy address belongs to the object at fff00000c63eb900 [ 17.313932] which belongs to the cache kmalloc-128 of size 128 [ 17.314000] The buggy address is located 0 bytes inside of [ 17.314000] freed 128-byte region [fff00000c63eb900, fff00000c63eb980) [ 17.314118] [ 17.314144] The buggy address belongs to the physical page: [ 17.314275] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1063eb [ 17.314363] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.314466] page_type: f5(slab) [ 17.314564] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 17.314615] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 17.314657] page dumped because: kasan: bad access detected [ 17.314721] [ 17.314739] Memory state around the buggy address: [ 17.314813] fff00000c63eb800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.315003] fff00000c63eb880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.315205] >fff00000c63eb900: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.315244] ^ [ 17.315273] fff00000c63eb980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.315315] fff00000c63eba00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 17.315353] ==================================================================
[ 13.512165] ================================================================== [ 13.513326] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x392/0x400 [ 13.513815] Read of size 1 at addr ffff8881027d6e00 by task kunit_try_catch/244 [ 13.514056] [ 13.514148] CPU: 1 UID: 0 PID: 244 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.514194] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.514205] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.514226] Call Trace: [ 13.514237] <TASK> [ 13.514251] dump_stack_lvl+0x73/0xb0 [ 13.514278] print_report+0xd1/0x610 [ 13.514299] ? __virt_addr_valid+0x1db/0x2d0 [ 13.514320] ? mempool_uaf_helper+0x392/0x400 [ 13.514341] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.514408] ? mempool_uaf_helper+0x392/0x400 [ 13.514429] kasan_report+0x141/0x180 [ 13.514451] ? mempool_uaf_helper+0x392/0x400 [ 13.514476] __asan_report_load1_noabort+0x18/0x20 [ 13.514499] mempool_uaf_helper+0x392/0x400 [ 13.514520] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 13.514543] ? __kasan_check_write+0x18/0x20 [ 13.514561] ? __pfx_sched_clock_cpu+0x10/0x10 [ 13.514583] ? finish_task_switch.isra.0+0x153/0x700 [ 13.514609] mempool_kmalloc_uaf+0xef/0x140 [ 13.514630] ? __pfx_mempool_kmalloc_uaf+0x10/0x10 [ 13.514673] ? __pfx_mempool_kmalloc+0x10/0x10 [ 13.514706] ? __pfx_mempool_kfree+0x10/0x10 [ 13.514730] ? __pfx_read_tsc+0x10/0x10 [ 13.514751] ? ktime_get_ts64+0x86/0x230 [ 13.514784] kunit_try_run_case+0x1a5/0x480 [ 13.514807] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.514829] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.514851] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.514873] ? __kthread_parkme+0x82/0x180 [ 13.514892] ? preempt_count_sub+0x50/0x80 [ 13.514914] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.514937] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.514958] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.514981] kthread+0x337/0x6f0 [ 13.514999] ? trace_preempt_on+0x20/0xc0 [ 13.515031] ? __pfx_kthread+0x10/0x10 [ 13.515051] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.515072] ? calculate_sigpending+0x7b/0xa0 [ 13.515095] ? __pfx_kthread+0x10/0x10 [ 13.515115] ret_from_fork+0x116/0x1d0 [ 13.515143] ? __pfx_kthread+0x10/0x10 [ 13.515163] ret_from_fork_asm+0x1a/0x30 [ 13.515192] </TASK> [ 13.515214] [ 13.531475] Allocated by task 244: [ 13.531879] kasan_save_stack+0x45/0x70 [ 13.532184] kasan_save_track+0x18/0x40 [ 13.532320] kasan_save_alloc_info+0x3b/0x50 [ 13.532477] __kasan_mempool_unpoison_object+0x1a9/0x200 [ 13.532652] remove_element+0x11e/0x190 [ 13.532791] mempool_alloc_preallocated+0x4d/0x90 [ 13.532946] mempool_uaf_helper+0x96/0x400 [ 13.533331] mempool_kmalloc_uaf+0xef/0x140 [ 13.533803] kunit_try_run_case+0x1a5/0x480 [ 13.534289] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.534854] kthread+0x337/0x6f0 [ 13.535176] ret_from_fork+0x116/0x1d0 [ 13.535568] ret_from_fork_asm+0x1a/0x30 [ 13.536023] [ 13.536204] Freed by task 244: [ 13.536586] kasan_save_stack+0x45/0x70 [ 13.536988] kasan_save_track+0x18/0x40 [ 13.537355] kasan_save_free_info+0x3f/0x60 [ 13.537805] __kasan_mempool_poison_object+0x131/0x1d0 [ 13.538280] mempool_free+0x2ec/0x380 [ 13.538706] mempool_uaf_helper+0x11a/0x400 [ 13.539129] mempool_kmalloc_uaf+0xef/0x140 [ 13.539708] kunit_try_run_case+0x1a5/0x480 [ 13.539928] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.540114] kthread+0x337/0x6f0 [ 13.540234] ret_from_fork+0x116/0x1d0 [ 13.540378] ret_from_fork_asm+0x1a/0x30 [ 13.540743] [ 13.540924] The buggy address belongs to the object at ffff8881027d6e00 [ 13.540924] which belongs to the cache kmalloc-128 of size 128 [ 13.542337] The buggy address is located 0 bytes inside of [ 13.542337] freed 128-byte region [ffff8881027d6e00, ffff8881027d6e80) [ 13.543562] [ 13.543750] The buggy address belongs to the physical page: [ 13.544254] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1027d6 [ 13.544943] flags: 0x200000000000000(node=0|zone=2) [ 13.545169] page_type: f5(slab) [ 13.545394] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 13.545885] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 13.546126] page dumped because: kasan: bad access detected [ 13.546297] [ 13.546367] Memory state around the buggy address: [ 13.546612] ffff8881027d6d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.547158] ffff8881027d6d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.547789] >ffff8881027d6e00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.548020] ^ [ 13.548137] ffff8881027d6e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.548352] ffff8881027d6f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 13.548566] ================================================================== [ 13.576751] ================================================================== [ 13.577246] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x392/0x400 [ 13.577799] Read of size 1 at addr ffff8881039b7240 by task kunit_try_catch/248 [ 13.578593] [ 13.578706] CPU: 1 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.578750] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.578788] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.578809] Call Trace: [ 13.578820] <TASK> [ 13.578834] dump_stack_lvl+0x73/0xb0 [ 13.579018] print_report+0xd1/0x610 [ 13.579042] ? __virt_addr_valid+0x1db/0x2d0 [ 13.579064] ? mempool_uaf_helper+0x392/0x400 [ 13.579086] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.579108] ? mempool_uaf_helper+0x392/0x400 [ 13.579129] kasan_report+0x141/0x180 [ 13.579151] ? mempool_uaf_helper+0x392/0x400 [ 13.579177] __asan_report_load1_noabort+0x18/0x20 [ 13.579200] mempool_uaf_helper+0x392/0x400 [ 13.579222] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 13.579251] mempool_slab_uaf+0xea/0x140 [ 13.579274] ? __pfx_mempool_slab_uaf+0x10/0x10 [ 13.579296] ? schedule+0x7c/0x2e0 [ 13.579317] ? __pfx_mempool_alloc_slab+0x10/0x10 [ 13.579341] ? __pfx_mempool_free_slab+0x10/0x10 [ 13.579366] ? __pfx_read_tsc+0x10/0x10 [ 13.579386] ? ktime_get_ts64+0x86/0x230 [ 13.579410] kunit_try_run_case+0x1a5/0x480 [ 13.579433] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.579454] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.579476] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.579498] ? __kthread_parkme+0x82/0x180 [ 13.579518] ? preempt_count_sub+0x50/0x80 [ 13.579540] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.579563] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.579586] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.579608] kthread+0x337/0x6f0 [ 13.579626] ? trace_preempt_on+0x20/0xc0 [ 13.579648] ? __pfx_kthread+0x10/0x10 [ 13.579668] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.579689] ? calculate_sigpending+0x7b/0xa0 [ 13.579710] ? __pfx_kthread+0x10/0x10 [ 13.579731] ret_from_fork+0x116/0x1d0 [ 13.579749] ? __pfx_kthread+0x10/0x10 [ 13.579770] ret_from_fork_asm+0x1a/0x30 [ 13.579799] </TASK> [ 13.579809] [ 13.590861] Allocated by task 248: [ 13.591065] kasan_save_stack+0x45/0x70 [ 13.591245] kasan_save_track+0x18/0x40 [ 13.591913] kasan_save_alloc_info+0x3b/0x50 [ 13.592130] __kasan_mempool_unpoison_object+0x1bb/0x200 [ 13.592473] remove_element+0x11e/0x190 [ 13.592663] mempool_alloc_preallocated+0x4d/0x90 [ 13.593121] mempool_uaf_helper+0x96/0x400 [ 13.593437] mempool_slab_uaf+0xea/0x140 [ 13.593664] kunit_try_run_case+0x1a5/0x480 [ 13.594032] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.594368] kthread+0x337/0x6f0 [ 13.594547] ret_from_fork+0x116/0x1d0 [ 13.594900] ret_from_fork_asm+0x1a/0x30 [ 13.595228] [ 13.595305] Freed by task 248: [ 13.595501] kasan_save_stack+0x45/0x70 [ 13.595902] kasan_save_track+0x18/0x40 [ 13.596143] kasan_save_free_info+0x3f/0x60 [ 13.596556] __kasan_mempool_poison_object+0x131/0x1d0 [ 13.596886] mempool_free+0x2ec/0x380 [ 13.597079] mempool_uaf_helper+0x11a/0x400 [ 13.597455] mempool_slab_uaf+0xea/0x140 [ 13.597776] kunit_try_run_case+0x1a5/0x480 [ 13.597992] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.598247] kthread+0x337/0x6f0 [ 13.598403] ret_from_fork+0x116/0x1d0 [ 13.598884] ret_from_fork_asm+0x1a/0x30 [ 13.599049] [ 13.599338] The buggy address belongs to the object at ffff8881039b7240 [ 13.599338] which belongs to the cache test_cache of size 123 [ 13.600135] The buggy address is located 0 bytes inside of [ 13.600135] freed 123-byte region [ffff8881039b7240, ffff8881039b72bb) [ 13.600759] [ 13.600869] The buggy address belongs to the physical page: [ 13.601148] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039b7 [ 13.601824] flags: 0x200000000000000(node=0|zone=2) [ 13.602066] page_type: f5(slab) [ 13.602240] raw: 0200000000000000 ffff8881027f2140 dead000000000122 0000000000000000 [ 13.602763] raw: 0000000000000000 0000000080150015 00000000f5000000 0000000000000000 [ 13.603225] page dumped because: kasan: bad access detected [ 13.603622] [ 13.603724] Memory state around the buggy address: [ 13.603928] ffff8881039b7100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.604260] ffff8881039b7180: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.604797] >ffff8881039b7200: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 13.605180] ^ [ 13.605531] ffff8881039b7280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.605994] ffff8881039b7300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.606324] ==================================================================