Date
July 23, 2025, 3:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 32.586762] ================================================================== [ 32.586830] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x314/0x340 [ 32.586913] Read of size 1 at addr fff00000c9bd9600 by task kunit_try_catch/260 [ 32.587135] [ 32.587187] CPU: 1 UID: 0 PID: 260 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250723 #1 PREEMPT [ 32.587388] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 32.587450] Hardware name: linux,dummy-virt (DT) [ 32.587485] Call trace: [ 32.587602] show_stack+0x20/0x38 (C) [ 32.587670] dump_stack_lvl+0x8c/0xd0 [ 32.587934] print_report+0x118/0x5e8 [ 32.588000] kasan_report+0xdc/0x128 [ 32.588052] __asan_report_load1_noabort+0x20/0x30 [ 32.588103] mempool_uaf_helper+0x314/0x340 [ 32.588164] mempool_kmalloc_uaf+0xc4/0x120 [ 32.588286] kunit_try_run_case+0x170/0x3f0 [ 32.588362] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.588415] kthread+0x328/0x630 [ 32.588517] ret_from_fork+0x10/0x20 [ 32.588629] [ 32.588677] Allocated by task 260: [ 32.588886] kasan_save_stack+0x3c/0x68 [ 32.588951] kasan_save_track+0x20/0x40 [ 32.589036] kasan_save_alloc_info+0x40/0x58 [ 32.589117] __kasan_mempool_unpoison_object+0x11c/0x180 [ 32.589574] remove_element+0x130/0x1f8 [ 32.589761] mempool_alloc_preallocated+0x58/0xc0 [ 32.589817] mempool_uaf_helper+0xa4/0x340 [ 32.589864] mempool_kmalloc_uaf+0xc4/0x120 [ 32.590201] kunit_try_run_case+0x170/0x3f0 [ 32.590309] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.590444] kthread+0x328/0x630 [ 32.590503] ret_from_fork+0x10/0x20 [ 32.590583] [ 32.590664] Freed by task 260: [ 32.590803] kasan_save_stack+0x3c/0x68 [ 32.590872] kasan_save_track+0x20/0x40 [ 32.590922] kasan_save_free_info+0x4c/0x78 [ 32.591088] __kasan_mempool_poison_object+0xc0/0x150 [ 32.591147] mempool_free+0x3f4/0x5f0 [ 32.591196] mempool_uaf_helper+0x104/0x340 [ 32.591242] mempool_kmalloc_uaf+0xc4/0x120 [ 32.591300] kunit_try_run_case+0x170/0x3f0 [ 32.591366] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.591407] kthread+0x328/0x630 [ 32.591441] ret_from_fork+0x10/0x20 [ 32.591476] [ 32.591506] The buggy address belongs to the object at fff00000c9bd9600 [ 32.591506] which belongs to the cache kmalloc-128 of size 128 [ 32.591576] The buggy address is located 0 bytes inside of [ 32.591576] freed 128-byte region [fff00000c9bd9600, fff00000c9bd9680) [ 32.591637] [ 32.591667] The buggy address belongs to the physical page: [ 32.591705] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109bd9 [ 32.591762] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 32.591813] page_type: f5(slab) [ 32.591851] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 32.591914] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 32.591957] page dumped because: kasan: bad access detected [ 32.591985] [ 32.592015] Memory state around the buggy address: [ 32.592056] fff00000c9bd9500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.592101] fff00000c9bd9580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.592153] >fff00000c9bd9600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.592192] ^ [ 32.592230] fff00000c9bd9680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.592278] fff00000c9bd9700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 32.592326] ================================================================== [ 32.614681] ================================================================== [ 32.614748] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x314/0x340 [ 32.614800] Read of size 1 at addr fff00000c9c29240 by task kunit_try_catch/264 [ 32.614894] [ 32.616209] CPU: 1 UID: 0 PID: 264 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250723 #1 PREEMPT [ 32.616328] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 32.616365] Hardware name: linux,dummy-virt (DT) [ 32.616407] Call trace: [ 32.616497] show_stack+0x20/0x38 (C) [ 32.616627] dump_stack_lvl+0x8c/0xd0 [ 32.616724] print_report+0x118/0x5e8 [ 32.616802] kasan_report+0xdc/0x128 [ 32.617194] __asan_report_load1_noabort+0x20/0x30 [ 32.617279] mempool_uaf_helper+0x314/0x340 [ 32.617394] mempool_slab_uaf+0xc0/0x118 [ 32.617504] kunit_try_run_case+0x170/0x3f0 [ 32.617592] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.617719] kthread+0x328/0x630 [ 32.617795] ret_from_fork+0x10/0x20 [ 32.617931] [ 32.617953] Allocated by task 264: [ 32.617991] kasan_save_stack+0x3c/0x68 [ 32.618331] kasan_save_track+0x20/0x40 [ 32.618396] kasan_save_alloc_info+0x40/0x58 [ 32.618436] __kasan_mempool_unpoison_object+0xbc/0x180 [ 32.618477] remove_element+0x16c/0x1f8 [ 32.618519] mempool_alloc_preallocated+0x58/0xc0 [ 32.618598] mempool_uaf_helper+0xa4/0x340 [ 32.618645] mempool_slab_uaf+0xc0/0x118 [ 32.618689] kunit_try_run_case+0x170/0x3f0 [ 32.618727] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.618770] kthread+0x328/0x630 [ 32.618802] ret_from_fork+0x10/0x20 [ 32.618849] [ 32.618868] Freed by task 264: [ 32.618911] kasan_save_stack+0x3c/0x68 [ 32.618948] kasan_save_track+0x20/0x40 [ 32.618992] kasan_save_free_info+0x4c/0x78 [ 32.619029] __kasan_mempool_poison_object+0xc0/0x150 [ 32.619077] mempool_free+0x3f4/0x5f0 [ 32.619115] mempool_uaf_helper+0x104/0x340 [ 32.619163] mempool_slab_uaf+0xc0/0x118 [ 32.619200] kunit_try_run_case+0x170/0x3f0 [ 32.619237] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.619281] kthread+0x328/0x630 [ 32.619329] ret_from_fork+0x10/0x20 [ 32.619371] [ 32.619392] The buggy address belongs to the object at fff00000c9c29240 [ 32.619392] which belongs to the cache test_cache of size 123 [ 32.619470] The buggy address is located 0 bytes inside of [ 32.619470] freed 123-byte region [fff00000c9c29240, fff00000c9c292bb) [ 32.619542] [ 32.619562] The buggy address belongs to the physical page: [ 32.619611] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109c29 [ 32.619676] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 32.619728] page_type: f5(slab) [ 32.619773] raw: 0bfffe0000000000 fff00000c1b0d8c0 dead000000000122 0000000000000000 [ 32.619831] raw: 0000000000000000 0000000080150015 00000000f5000000 0000000000000000 [ 32.619872] page dumped because: kasan: bad access detected [ 32.620375] [ 32.620427] Memory state around the buggy address: [ 32.620719] fff00000c9c29100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 32.621314] fff00000c9c29180: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.621385] >fff00000c9c29200: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 32.621481] ^ [ 32.621521] fff00000c9c29280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 32.621563] fff00000c9c29300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.621601] ==================================================================
[ 26.826001] ================================================================== [ 26.826627] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x392/0x400 [ 26.827035] Read of size 1 at addr ffff8881060a7240 by task kunit_try_catch/280 [ 26.827433] [ 26.827559] CPU: 1 UID: 0 PID: 280 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250723 #1 PREEMPT(voluntary) [ 26.827655] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.827670] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.827704] Call Trace: [ 26.827718] <TASK> [ 26.827739] dump_stack_lvl+0x73/0xb0 [ 26.827772] print_report+0xd1/0x640 [ 26.827825] ? __virt_addr_valid+0x1db/0x2d0 [ 26.827852] ? mempool_uaf_helper+0x392/0x400 [ 26.827874] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.827913] ? mempool_uaf_helper+0x392/0x400 [ 26.827952] kasan_report+0x141/0x180 [ 26.827975] ? mempool_uaf_helper+0x392/0x400 [ 26.828001] __asan_report_load1_noabort+0x18/0x20 [ 26.828026] mempool_uaf_helper+0x392/0x400 [ 26.828050] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 26.828104] ? finish_task_switch.isra.0+0x153/0x700 [ 26.828131] mempool_slab_uaf+0xea/0x140 [ 26.828170] ? __pfx_mempool_slab_uaf+0x10/0x10 [ 26.828196] ? __pfx_mempool_alloc_slab+0x10/0x10 [ 26.828224] ? __pfx_mempool_free_slab+0x10/0x10 [ 26.828268] ? __pfx_read_tsc+0x10/0x10 [ 26.828300] ? ktime_get_ts64+0x86/0x230 [ 26.828325] kunit_try_run_case+0x1a5/0x480 [ 26.828547] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.828581] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 26.828610] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.828636] ? __kthread_parkme+0x82/0x180 [ 26.828657] ? preempt_count_sub+0x50/0x80 [ 26.828681] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.828707] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.828732] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.828757] kthread+0x337/0x6f0 [ 26.828778] ? trace_preempt_on+0x20/0xc0 [ 26.828803] ? __pfx_kthread+0x10/0x10 [ 26.828825] ? _raw_spin_unlock_irq+0x47/0x80 [ 26.828849] ? calculate_sigpending+0x7b/0xa0 [ 26.828873] ? __pfx_kthread+0x10/0x10 [ 26.828894] ret_from_fork+0x116/0x1d0 [ 26.828915] ? __pfx_kthread+0x10/0x10 [ 26.828962] ret_from_fork_asm+0x1a/0x30 [ 26.828994] </TASK> [ 26.829007] [ 26.838225] Allocated by task 280: [ 26.838418] kasan_save_stack+0x45/0x70 [ 26.838761] kasan_save_track+0x18/0x40 [ 26.839000] kasan_save_alloc_info+0x3b/0x50 [ 26.839263] __kasan_mempool_unpoison_object+0x1bb/0x200 [ 26.839542] remove_element+0x11e/0x190 [ 26.839753] mempool_alloc_preallocated+0x4d/0x90 [ 26.840036] mempool_uaf_helper+0x96/0x400 [ 26.840271] mempool_slab_uaf+0xea/0x140 [ 26.840661] kunit_try_run_case+0x1a5/0x480 [ 26.840904] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.841183] kthread+0x337/0x6f0 [ 26.841354] ret_from_fork+0x116/0x1d0 [ 26.841506] ret_from_fork_asm+0x1a/0x30 [ 26.841678] [ 26.841772] Freed by task 280: [ 26.841921] kasan_save_stack+0x45/0x70 [ 26.842117] kasan_save_track+0x18/0x40 [ 26.842311] kasan_save_free_info+0x3f/0x60 [ 26.842472] __kasan_mempool_poison_object+0x131/0x1d0 [ 26.842629] mempool_free+0x490/0x640 [ 26.842801] mempool_uaf_helper+0x11a/0x400 [ 26.843000] mempool_slab_uaf+0xea/0x140 [ 26.843337] kunit_try_run_case+0x1a5/0x480 [ 26.843653] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.843909] kthread+0x337/0x6f0 [ 26.844089] ret_from_fork+0x116/0x1d0 [ 26.844228] ret_from_fork_asm+0x1a/0x30 [ 26.844509] [ 26.844608] The buggy address belongs to the object at ffff8881060a7240 [ 26.844608] which belongs to the cache test_cache of size 123 [ 26.845299] The buggy address is located 0 bytes inside of [ 26.845299] freed 123-byte region [ffff8881060a7240, ffff8881060a72bb) [ 26.845992] [ 26.846099] The buggy address belongs to the physical page: [ 26.846365] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1060a7 [ 26.846713] flags: 0x200000000000000(node=0|zone=2) [ 26.846915] page_type: f5(slab) [ 26.847074] raw: 0200000000000000 ffff888101242dc0 dead000000000122 0000000000000000 [ 26.847455] raw: 0000000000000000 0000000080150015 00000000f5000000 0000000000000000 [ 26.847702] page dumped because: kasan: bad access detected [ 26.847930] [ 26.848018] Memory state around the buggy address: [ 26.848248] ffff8881060a7100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 26.848865] ffff8881060a7180: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.849218] >ffff8881060a7200: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 26.849664] ^ [ 26.849898] ffff8881060a7280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 26.850230] ffff8881060a7300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.850678] ================================================================== [ 26.756311] ================================================================== [ 26.758052] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x392/0x400 [ 26.758343] Read of size 1 at addr ffff888104964d00 by task kunit_try_catch/276 [ 26.758567] [ 26.758657] CPU: 0 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250723 #1 PREEMPT(voluntary) [ 26.758713] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.758727] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.758750] Call Trace: [ 26.758764] <TASK> [ 26.758784] dump_stack_lvl+0x73/0xb0 [ 26.758816] print_report+0xd1/0x640 [ 26.758840] ? __virt_addr_valid+0x1db/0x2d0 [ 26.758867] ? mempool_uaf_helper+0x392/0x400 [ 26.758889] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.758915] ? mempool_uaf_helper+0x392/0x400 [ 26.758994] kasan_report+0x141/0x180 [ 26.759022] ? mempool_uaf_helper+0x392/0x400 [ 26.759050] __asan_report_load1_noabort+0x18/0x20 [ 26.759075] mempool_uaf_helper+0x392/0x400 [ 26.759098] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 26.759286] ? dequeue_entities+0x23f/0x1630 [ 26.759455] ? __kasan_check_write+0x18/0x20 [ 26.759483] ? __pfx_sched_clock_cpu+0x10/0x10 [ 26.759506] ? finish_task_switch.isra.0+0x153/0x700 [ 26.759534] mempool_kmalloc_uaf+0xef/0x140 [ 26.759558] ? __pfx_mempool_kmalloc_uaf+0x10/0x10 [ 26.759584] ? __pfx_mempool_kmalloc+0x10/0x10 [ 26.759610] ? __pfx_mempool_kfree+0x10/0x10 [ 26.759640] ? __pfx_read_tsc+0x10/0x10 [ 26.759664] ? ktime_get_ts64+0x86/0x230 [ 26.759690] kunit_try_run_case+0x1a5/0x480 [ 26.759718] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.759741] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 26.759768] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.759794] ? __kthread_parkme+0x82/0x180 [ 26.759814] ? preempt_count_sub+0x50/0x80 [ 26.759837] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.759861] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.759885] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.759908] kthread+0x337/0x6f0 [ 26.759929] ? trace_preempt_on+0x20/0xc0 [ 26.760273] ? __pfx_kthread+0x10/0x10 [ 26.760298] ? _raw_spin_unlock_irq+0x47/0x80 [ 26.760323] ? calculate_sigpending+0x7b/0xa0 [ 26.760348] ? __pfx_kthread+0x10/0x10 [ 26.760621] ret_from_fork+0x116/0x1d0 [ 26.760656] ? __pfx_kthread+0x10/0x10 [ 26.760681] ret_from_fork_asm+0x1a/0x30 [ 26.760714] </TASK> [ 26.760726] [ 26.778483] Allocated by task 276: [ 26.778711] kasan_save_stack+0x45/0x70 [ 26.778866] kasan_save_track+0x18/0x40 [ 26.779020] kasan_save_alloc_info+0x3b/0x50 [ 26.779405] __kasan_mempool_unpoison_object+0x1a9/0x200 [ 26.779960] remove_element+0x11e/0x190 [ 26.780330] mempool_alloc_preallocated+0x4d/0x90 [ 26.780800] mempool_uaf_helper+0x96/0x400 [ 26.781249] mempool_kmalloc_uaf+0xef/0x140 [ 26.781611] kunit_try_run_case+0x1a5/0x480 [ 26.781921] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.782278] kthread+0x337/0x6f0 [ 26.782395] ret_from_fork+0x116/0x1d0 [ 26.782736] ret_from_fork_asm+0x1a/0x30 [ 26.783161] [ 26.783332] Freed by task 276: [ 26.783711] kasan_save_stack+0x45/0x70 [ 26.784091] kasan_save_track+0x18/0x40 [ 26.784535] kasan_save_free_info+0x3f/0x60 [ 26.784720] __kasan_mempool_poison_object+0x131/0x1d0 [ 26.784883] mempool_free+0x490/0x640 [ 26.785031] mempool_uaf_helper+0x11a/0x400 [ 26.785179] mempool_kmalloc_uaf+0xef/0x140 [ 26.785317] kunit_try_run_case+0x1a5/0x480 [ 26.785653] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.786166] kthread+0x337/0x6f0 [ 26.786454] ret_from_fork+0x116/0x1d0 [ 26.786885] ret_from_fork_asm+0x1a/0x30 [ 26.787270] [ 26.787430] The buggy address belongs to the object at ffff888104964d00 [ 26.787430] which belongs to the cache kmalloc-128 of size 128 [ 26.788225] The buggy address is located 0 bytes inside of [ 26.788225] freed 128-byte region [ffff888104964d00, ffff888104964d80) [ 26.788563] [ 26.788632] The buggy address belongs to the physical page: [ 26.788805] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104964 [ 26.789733] flags: 0x200000000000000(node=0|zone=2) [ 26.790230] page_type: f5(slab) [ 26.790555] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 26.791480] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 26.792216] page dumped because: kasan: bad access detected [ 26.792736] [ 26.792945] Memory state around the buggy address: [ 26.793384] ffff888104964c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.794206] ffff888104964c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.794853] >ffff888104964d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.795264] ^ [ 26.795558] ffff888104964d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.796284] ffff888104964e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 26.796816] ==================================================================