Date
July 8, 2025, 4:38 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.847495] ================================================================== [ 19.847556] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x314/0x340 [ 19.847610] Read of size 1 at addr fff00000c6e6c240 by task kunit_try_catch/233 [ 19.847676] [ 19.847710] CPU: 0 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT [ 19.847790] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.847817] Hardware name: linux,dummy-virt (DT) [ 19.847847] Call trace: [ 19.847870] show_stack+0x20/0x38 (C) [ 19.847918] dump_stack_lvl+0x8c/0xd0 [ 19.847984] print_report+0x118/0x608 [ 19.848030] kasan_report+0xdc/0x128 [ 19.848072] __asan_report_load1_noabort+0x20/0x30 [ 19.848127] mempool_uaf_helper+0x314/0x340 [ 19.848174] mempool_slab_uaf+0xc0/0x118 [ 19.848225] kunit_try_run_case+0x170/0x3f0 [ 19.848274] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.848329] kthread+0x328/0x630 [ 19.848388] ret_from_fork+0x10/0x20 [ 19.848450] [ 19.848469] Allocated by task 233: [ 19.848497] kasan_save_stack+0x3c/0x68 [ 19.848534] kasan_save_track+0x20/0x40 [ 19.848571] kasan_save_alloc_info+0x40/0x58 [ 19.848616] __kasan_mempool_unpoison_object+0xbc/0x180 [ 19.848659] remove_element+0x16c/0x1f8 [ 19.848705] mempool_alloc_preallocated+0x58/0xc0 [ 19.848747] mempool_uaf_helper+0xa4/0x340 [ 19.848785] mempool_slab_uaf+0xc0/0x118 [ 19.848820] kunit_try_run_case+0x170/0x3f0 [ 19.848857] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.848909] kthread+0x328/0x630 [ 19.848944] ret_from_fork+0x10/0x20 [ 19.848980] [ 19.849006] Freed by task 233: [ 19.849031] kasan_save_stack+0x3c/0x68 [ 19.849067] kasan_save_track+0x20/0x40 [ 19.849101] kasan_save_free_info+0x4c/0x78 [ 19.849139] __kasan_mempool_poison_object+0xc0/0x150 [ 19.849177] mempool_free+0x28c/0x328 [ 19.849215] mempool_uaf_helper+0x104/0x340 [ 19.849254] mempool_slab_uaf+0xc0/0x118 [ 19.849288] kunit_try_run_case+0x170/0x3f0 [ 19.849347] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.849391] kthread+0x328/0x630 [ 19.849426] ret_from_fork+0x10/0x20 [ 19.849889] [ 19.849926] The buggy address belongs to the object at fff00000c6e6c240 [ 19.849926] which belongs to the cache test_cache of size 123 [ 19.850048] The buggy address is located 0 bytes inside of [ 19.850048] freed 123-byte region [fff00000c6e6c240, fff00000c6e6c2bb) [ 19.850153] [ 19.850181] The buggy address belongs to the physical page: [ 19.850212] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106e6c [ 19.850281] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.850396] page_type: f5(slab) [ 19.850458] raw: 0bfffe0000000000 fff00000ffe8e000 dead000000000122 0000000000000000 [ 19.850508] raw: 0000000000000000 0000000080150015 00000000f5000000 0000000000000000 [ 19.850547] page dumped because: kasan: bad access detected [ 19.850578] [ 19.850595] Memory state around the buggy address: [ 19.850627] fff00000c6e6c100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.850790] fff00000c6e6c180: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.850925] >fff00000c6e6c200: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 19.850994] ^ [ 19.851098] fff00000c6e6c280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.851186] fff00000c6e6c300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.851255] ================================================================== [ 19.825412] ================================================================== [ 19.825493] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x314/0x340 [ 19.825575] Read of size 1 at addr fff00000c6369d00 by task kunit_try_catch/229 [ 19.825627] [ 19.825679] CPU: 0 UID: 0 PID: 229 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT [ 19.825925] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.825991] Hardware name: linux,dummy-virt (DT) [ 19.826025] Call trace: [ 19.826048] show_stack+0x20/0x38 (C) [ 19.826102] dump_stack_lvl+0x8c/0xd0 [ 19.826379] print_report+0x118/0x608 [ 19.826455] kasan_report+0xdc/0x128 [ 19.826520] __asan_report_load1_noabort+0x20/0x30 [ 19.826587] mempool_uaf_helper+0x314/0x340 [ 19.826653] mempool_kmalloc_uaf+0xc4/0x120 [ 19.826701] kunit_try_run_case+0x170/0x3f0 [ 19.826754] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.826807] kthread+0x328/0x630 [ 19.826994] ret_from_fork+0x10/0x20 [ 19.827076] [ 19.827115] Allocated by task 229: [ 19.827178] kasan_save_stack+0x3c/0x68 [ 19.827226] kasan_save_track+0x20/0x40 [ 19.827262] kasan_save_alloc_info+0x40/0x58 [ 19.827318] __kasan_mempool_unpoison_object+0x11c/0x180 [ 19.827393] remove_element+0x130/0x1f8 [ 19.827433] mempool_alloc_preallocated+0x58/0xc0 [ 19.827475] mempool_uaf_helper+0xa4/0x340 [ 19.827512] mempool_kmalloc_uaf+0xc4/0x120 [ 19.827639] kunit_try_run_case+0x170/0x3f0 [ 19.827753] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.827834] kthread+0x328/0x630 [ 19.827890] ret_from_fork+0x10/0x20 [ 19.827926] [ 19.827988] Freed by task 229: [ 19.828036] kasan_save_stack+0x3c/0x68 [ 19.828103] kasan_save_track+0x20/0x40 [ 19.828144] kasan_save_free_info+0x4c/0x78 [ 19.828182] __kasan_mempool_poison_object+0xc0/0x150 [ 19.828312] mempool_free+0x28c/0x328 [ 19.828531] mempool_uaf_helper+0x104/0x340 [ 19.828618] mempool_kmalloc_uaf+0xc4/0x120 [ 19.828696] kunit_try_run_case+0x170/0x3f0 [ 19.828771] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.828861] kthread+0x328/0x630 [ 19.828938] ret_from_fork+0x10/0x20 [ 19.828975] [ 19.828998] The buggy address belongs to the object at fff00000c6369d00 [ 19.828998] which belongs to the cache kmalloc-128 of size 128 [ 19.829058] The buggy address is located 0 bytes inside of [ 19.829058] freed 128-byte region [fff00000c6369d00, fff00000c6369d80) [ 19.829307] [ 19.829466] The buggy address belongs to the physical page: [ 19.829565] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106369 [ 19.829659] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.829718] page_type: f5(slab) [ 19.829757] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 19.829845] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 19.829943] page dumped because: kasan: bad access detected [ 19.830010] [ 19.830028] Memory state around the buggy address: [ 19.830061] fff00000c6369c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.830318] fff00000c6369c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.830450] >fff00000c6369d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.830551] ^ [ 19.830631] fff00000c6369d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.830714] fff00000c6369e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 19.830753] ==================================================================
[ 12.907003] ================================================================== [ 12.907515] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x392/0x400 [ 12.907866] Read of size 1 at addr ffff8881029e6240 by task kunit_try_catch/251 [ 12.908250] [ 12.908385] CPU: 1 UID: 0 PID: 251 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT(voluntary) [ 12.908448] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.908461] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.908486] Call Trace: [ 12.908500] <TASK> [ 12.908527] dump_stack_lvl+0x73/0xb0 [ 12.908569] print_report+0xd1/0x650 [ 12.908593] ? __virt_addr_valid+0x1db/0x2d0 [ 12.908630] ? mempool_uaf_helper+0x392/0x400 [ 12.908653] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.908676] ? mempool_uaf_helper+0x392/0x400 [ 12.908700] kasan_report+0x141/0x180 [ 12.908723] ? mempool_uaf_helper+0x392/0x400 [ 12.908750] __asan_report_load1_noabort+0x18/0x20 [ 12.908772] mempool_uaf_helper+0x392/0x400 [ 12.908797] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 12.908832] ? finish_task_switch.isra.0+0x153/0x700 [ 12.908863] mempool_slab_uaf+0xea/0x140 [ 12.908901] ? __pfx_mempool_slab_uaf+0x10/0x10 [ 12.908974] ? __kasan_check_write+0x18/0x20 [ 12.909001] ? __pfx_mempool_alloc_slab+0x10/0x10 [ 12.909026] ? __pfx_mempool_free_slab+0x10/0x10 [ 12.909049] ? __pfx_read_tsc+0x10/0x10 [ 12.909083] ? ktime_get_ts64+0x86/0x230 [ 12.909107] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 12.909133] kunit_try_run_case+0x1a5/0x480 [ 12.909168] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.909190] ? queued_spin_lock_slowpath+0x116/0xb40 [ 12.909217] ? __kthread_parkme+0x82/0x180 [ 12.909241] ? preempt_count_sub+0x50/0x80 [ 12.909266] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.909287] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.909312] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.909336] kthread+0x337/0x6f0 [ 12.909354] ? trace_preempt_on+0x20/0xc0 [ 12.909379] ? __pfx_kthread+0x10/0x10 [ 12.909398] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.909421] ? calculate_sigpending+0x7b/0xa0 [ 12.909444] ? __pfx_kthread+0x10/0x10 [ 12.909463] ret_from_fork+0x41/0x80 [ 12.909484] ? __pfx_kthread+0x10/0x10 [ 12.909503] ret_from_fork_asm+0x1a/0x30 [ 12.909535] </TASK> [ 12.909547] [ 12.918244] Allocated by task 251: [ 12.918520] kasan_save_stack+0x45/0x70 [ 12.918779] kasan_save_track+0x18/0x40 [ 12.919217] kasan_save_alloc_info+0x3b/0x50 [ 12.919446] __kasan_mempool_unpoison_object+0x1bb/0x200 [ 12.919787] remove_element+0x11e/0x190 [ 12.920141] mempool_alloc_preallocated+0x4d/0x90 [ 12.920309] mempool_uaf_helper+0x96/0x400 [ 12.920505] mempool_slab_uaf+0xea/0x140 [ 12.920716] kunit_try_run_case+0x1a5/0x480 [ 12.920971] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.921244] kthread+0x337/0x6f0 [ 12.921371] ret_from_fork+0x41/0x80 [ 12.921530] ret_from_fork_asm+0x1a/0x30 [ 12.921736] [ 12.921897] Freed by task 251: [ 12.922163] kasan_save_stack+0x45/0x70 [ 12.922429] kasan_save_track+0x18/0x40 [ 12.922742] kasan_save_free_info+0x3f/0x60 [ 12.923056] __kasan_mempool_poison_object+0x131/0x1d0 [ 12.923317] mempool_free+0x2ec/0x380 [ 12.923538] mempool_uaf_helper+0x11a/0x400 [ 12.923724] mempool_slab_uaf+0xea/0x140 [ 12.923865] kunit_try_run_case+0x1a5/0x480 [ 12.924029] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.924289] kthread+0x337/0x6f0 [ 12.924484] ret_from_fork+0x41/0x80 [ 12.924617] ret_from_fork_asm+0x1a/0x30 [ 12.924758] [ 12.924962] The buggy address belongs to the object at ffff8881029e6240 [ 12.924962] which belongs to the cache test_cache of size 123 [ 12.925559] The buggy address is located 0 bytes inside of [ 12.925559] freed 123-byte region [ffff8881029e6240, ffff8881029e62bb) [ 12.926259] [ 12.926377] The buggy address belongs to the physical page: [ 12.926934] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029e6 [ 12.927282] flags: 0x200000000000000(node=0|zone=2) [ 12.927527] page_type: f5(slab) [ 12.927800] raw: 0200000000000000 ffff8881010b3780 dead000000000122 0000000000000000 [ 12.928245] raw: 0000000000000000 0000000080150015 00000000f5000000 0000000000000000 [ 12.928632] page dumped because: kasan: bad access detected [ 12.928943] [ 12.929038] Memory state around the buggy address: [ 12.929201] ffff8881029e6100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.929419] ffff8881029e6180: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.929762] >ffff8881029e6200: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 12.930088] ^ [ 12.930257] ffff8881029e6280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.930984] ffff8881029e6300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.931406] ================================================================== [ 12.829715] ================================================================== [ 12.830397] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x392/0x400 [ 12.831653] Read of size 1 at addr ffff8881029cae00 by task kunit_try_catch/247 [ 12.832605] [ 12.832887] CPU: 1 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT(voluntary) [ 12.832947] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.832960] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.832986] Call Trace: [ 12.833000] <TASK> [ 12.833019] dump_stack_lvl+0x73/0xb0 [ 12.833051] print_report+0xd1/0x650 [ 12.833077] ? __virt_addr_valid+0x1db/0x2d0 [ 12.833101] ? mempool_uaf_helper+0x392/0x400 [ 12.833125] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.833150] ? mempool_uaf_helper+0x392/0x400 [ 12.833174] kasan_report+0x141/0x180 [ 12.833198] ? mempool_uaf_helper+0x392/0x400 [ 12.833227] __asan_report_load1_noabort+0x18/0x20 [ 12.833249] mempool_uaf_helper+0x392/0x400 [ 12.833274] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 12.833298] ? dequeue_entities+0x852/0x1740 [ 12.833326] ? finish_task_switch.isra.0+0x153/0x700 [ 12.833355] mempool_kmalloc_uaf+0xef/0x140 [ 12.833379] ? __pfx_mempool_kmalloc_uaf+0x10/0x10 [ 12.833404] ? dequeue_task_fair+0x166/0x4e0 [ 12.833427] ? __pfx_mempool_kmalloc+0x10/0x10 [ 12.833449] ? __pfx_mempool_kfree+0x10/0x10 [ 12.833473] ? __pfx_read_tsc+0x10/0x10 [ 12.833502] ? ktime_get_ts64+0x86/0x230 [ 12.833530] kunit_try_run_case+0x1a5/0x480 [ 12.833554] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.833574] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.833601] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.833626] ? __kthread_parkme+0x82/0x180 [ 12.833651] ? preempt_count_sub+0x50/0x80 [ 12.833677] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.833698] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.833723] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.833748] kthread+0x337/0x6f0 [ 12.833766] ? trace_preempt_on+0x20/0xc0 [ 12.833791] ? __pfx_kthread+0x10/0x10 [ 12.833810] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.833834] ? calculate_sigpending+0x7b/0xa0 [ 12.833857] ? __pfx_kthread+0x10/0x10 [ 12.833886] ret_from_fork+0x41/0x80 [ 12.833908] ? __pfx_kthread+0x10/0x10 [ 12.833926] ret_from_fork_asm+0x1a/0x30 [ 12.833960] </TASK> [ 12.833972] [ 12.848259] Allocated by task 247: [ 12.848404] kasan_save_stack+0x45/0x70 [ 12.848588] kasan_save_track+0x18/0x40 [ 12.848982] kasan_save_alloc_info+0x3b/0x50 [ 12.849454] __kasan_mempool_unpoison_object+0x1a9/0x200 [ 12.850131] remove_element+0x11e/0x190 [ 12.850633] mempool_alloc_preallocated+0x4d/0x90 [ 12.851165] mempool_uaf_helper+0x96/0x400 [ 12.851469] mempool_kmalloc_uaf+0xef/0x140 [ 12.851626] kunit_try_run_case+0x1a5/0x480 [ 12.851887] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.852073] kthread+0x337/0x6f0 [ 12.852197] ret_from_fork+0x41/0x80 [ 12.852332] ret_from_fork_asm+0x1a/0x30 [ 12.852476] [ 12.852705] Freed by task 247: [ 12.853027] kasan_save_stack+0x45/0x70 [ 12.853381] kasan_save_track+0x18/0x40 [ 12.853720] kasan_save_free_info+0x3f/0x60 [ 12.854184] __kasan_mempool_poison_object+0x131/0x1d0 [ 12.855655] mempool_free+0x2ec/0x380 [ 12.856812] mempool_uaf_helper+0x11a/0x400 [ 12.857713] mempool_kmalloc_uaf+0xef/0x140 [ 12.857915] kunit_try_run_case+0x1a5/0x480 [ 12.858068] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.858245] kthread+0x337/0x6f0 [ 12.858364] ret_from_fork+0x41/0x80 [ 12.858495] ret_from_fork_asm+0x1a/0x30 [ 12.858634] [ 12.858709] The buggy address belongs to the object at ffff8881029cae00 [ 12.858709] which belongs to the cache kmalloc-128 of size 128 [ 12.859074] The buggy address is located 0 bytes inside of [ 12.859074] freed 128-byte region [ffff8881029cae00, ffff8881029cae80) [ 12.859409] [ 12.859483] The buggy address belongs to the physical page: [ 12.859665] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029ca [ 12.860725] flags: 0x200000000000000(node=0|zone=2) [ 12.861187] page_type: f5(slab) [ 12.861374] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 12.862124] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 12.862535] page dumped because: kasan: bad access detected [ 12.862802] [ 12.863141] Memory state around the buggy address: [ 12.863570] ffff8881029cad00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.864426] ffff8881029cad80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.865090] >ffff8881029cae00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.865316] ^ [ 12.865437] ffff8881029cae80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.866088] ffff8881029caf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.866864] ==================================================================