Date
July 17, 2025, 10:12 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.642683] ================================================================== [ 31.642779] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x314/0x340 [ 31.642855] Read of size 1 at addr fff00000c98f2100 by task kunit_try_catch/258 [ 31.642916] [ 31.642989] CPU: 0 UID: 0 PID: 258 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250717 #1 PREEMPT [ 31.643100] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.643140] Hardware name: linux,dummy-virt (DT) [ 31.643173] Call trace: [ 31.643208] show_stack+0x20/0x38 (C) [ 31.643258] dump_stack_lvl+0x8c/0xd0 [ 31.643319] print_report+0x118/0x5d0 [ 31.643375] kasan_report+0xdc/0x128 [ 31.643419] __asan_report_load1_noabort+0x20/0x30 [ 31.643480] mempool_uaf_helper+0x314/0x340 [ 31.643539] mempool_kmalloc_uaf+0xc4/0x120 [ 31.643605] kunit_try_run_case+0x170/0x3f0 [ 31.643667] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.643731] kthread+0x328/0x630 [ 31.643786] ret_from_fork+0x10/0x20 [ 31.643845] [ 31.643874] Allocated by task 258: [ 31.643923] kasan_save_stack+0x3c/0x68 [ 31.643961] kasan_save_track+0x20/0x40 [ 31.644008] kasan_save_alloc_info+0x40/0x58 [ 31.644046] __kasan_mempool_unpoison_object+0x11c/0x180 [ 31.644199] remove_element+0x130/0x1f8 [ 31.644242] mempool_alloc_preallocated+0x58/0xc0 [ 31.645020] mempool_uaf_helper+0xa4/0x340 [ 31.645108] mempool_kmalloc_uaf+0xc4/0x120 [ 31.645189] kunit_try_run_case+0x170/0x3f0 [ 31.645230] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.645561] kthread+0x328/0x630 [ 31.645762] ret_from_fork+0x10/0x20 [ 31.646032] [ 31.646472] Freed by task 258: [ 31.646533] kasan_save_stack+0x3c/0x68 [ 31.646745] kasan_save_track+0x20/0x40 [ 31.646825] kasan_save_free_info+0x4c/0x78 [ 31.646990] __kasan_mempool_poison_object+0xc0/0x150 [ 31.647160] mempool_free+0x28c/0x328 [ 31.647202] mempool_uaf_helper+0x104/0x340 [ 31.647403] mempool_kmalloc_uaf+0xc4/0x120 [ 31.647566] kunit_try_run_case+0x170/0x3f0 [ 31.647749] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.647838] kthread+0x328/0x630 [ 31.648081] ret_from_fork+0x10/0x20 [ 31.648222] [ 31.648426] The buggy address belongs to the object at fff00000c98f2100 [ 31.648426] which belongs to the cache kmalloc-128 of size 128 [ 31.648503] The buggy address is located 0 bytes inside of [ 31.648503] freed 128-byte region [fff00000c98f2100, fff00000c98f2180) [ 31.648731] [ 31.649220] The buggy address belongs to the physical page: [ 31.649272] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1098f2 [ 31.649463] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.649652] page_type: f5(slab) [ 31.649758] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 31.649838] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 31.650073] page dumped because: kasan: bad access detected [ 31.650191] [ 31.650289] Memory state around the buggy address: [ 31.650325] fff00000c98f2000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.650749] fff00000c98f2080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.650810] >fff00000c98f2100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.650974] ^ [ 31.651404] fff00000c98f2180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.651510] fff00000c98f2200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.651611] ================================================================== [ 31.683025] ================================================================== [ 31.683535] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x314/0x340 [ 31.683638] Read of size 1 at addr fff00000c98df240 by task kunit_try_catch/262 [ 31.684031] [ 31.684084] CPU: 0 UID: 0 PID: 262 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250717 #1 PREEMPT [ 31.684291] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.684329] Hardware name: linux,dummy-virt (DT) [ 31.684712] Call trace: [ 31.685165] show_stack+0x20/0x38 (C) [ 31.685240] dump_stack_lvl+0x8c/0xd0 [ 31.685331] print_report+0x118/0x5d0 [ 31.685533] kasan_report+0xdc/0x128 [ 31.685833] __asan_report_load1_noabort+0x20/0x30 [ 31.686092] mempool_uaf_helper+0x314/0x340 [ 31.686255] mempool_slab_uaf+0xc0/0x118 [ 31.686343] kunit_try_run_case+0x170/0x3f0 [ 31.686403] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.686463] kthread+0x328/0x630 [ 31.686509] ret_from_fork+0x10/0x20 [ 31.686556] [ 31.686577] Allocated by task 262: [ 31.686605] kasan_save_stack+0x3c/0x68 [ 31.686645] kasan_save_track+0x20/0x40 [ 31.686693] kasan_save_alloc_info+0x40/0x58 [ 31.686740] __kasan_mempool_unpoison_object+0xbc/0x180 [ 31.686790] remove_element+0x16c/0x1f8 [ 31.686828] mempool_alloc_preallocated+0x58/0xc0 [ 31.686879] mempool_uaf_helper+0xa4/0x340 [ 31.686925] mempool_slab_uaf+0xc0/0x118 [ 31.686971] kunit_try_run_case+0x170/0x3f0 [ 31.687028] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.687091] kthread+0x328/0x630 [ 31.687134] ret_from_fork+0x10/0x20 [ 31.687168] [ 31.687189] Freed by task 262: [ 31.687225] kasan_save_stack+0x3c/0x68 [ 31.687261] kasan_save_track+0x20/0x40 [ 31.687302] kasan_save_free_info+0x4c/0x78 [ 31.687354] __kasan_mempool_poison_object+0xc0/0x150 [ 31.687395] mempool_free+0x28c/0x328 [ 31.687438] mempool_uaf_helper+0x104/0x340 [ 31.687482] mempool_slab_uaf+0xc0/0x118 [ 31.687527] kunit_try_run_case+0x170/0x3f0 [ 31.687565] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.687614] kthread+0x328/0x630 [ 31.687661] ret_from_fork+0x10/0x20 [ 31.687698] [ 31.687719] The buggy address belongs to the object at fff00000c98df240 [ 31.687719] which belongs to the cache test_cache of size 123 [ 31.687784] The buggy address is located 0 bytes inside of [ 31.687784] freed 123-byte region [fff00000c98df240, fff00000c98df2bb) [ 31.687855] [ 31.687876] The buggy address belongs to the physical page: [ 31.687915] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1098df [ 31.687969] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.688018] page_type: f5(slab) [ 31.688066] raw: 0bfffe0000000000 fff00000c3f2ddc0 dead000000000122 0000000000000000 [ 31.688322] raw: 0000000000000000 0000000080150015 00000000f5000000 0000000000000000 [ 31.688682] page dumped because: kasan: bad access detected [ 31.688724] [ 31.688766] Memory state around the buggy address: [ 31.689381] fff00000c98df100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 31.689754] fff00000c98df180: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.690094] >fff00000c98df200: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 31.690337] ^ [ 31.690542] fff00000c98df280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 31.690702] fff00000c98df300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.690743] ==================================================================
[ 27.160761] ================================================================== [ 27.161189] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x392/0x400 [ 27.161632] Read of size 1 at addr ffff888104588000 by task kunit_try_catch/276 [ 27.161911] [ 27.162023] CPU: 1 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) [ 27.162071] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.162093] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.162113] Call Trace: [ 27.162125] <TASK> [ 27.162140] dump_stack_lvl+0x73/0xb0 [ 27.162168] print_report+0xd1/0x610 [ 27.162189] ? __virt_addr_valid+0x1db/0x2d0 [ 27.162212] ? mempool_uaf_helper+0x392/0x400 [ 27.162232] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.162316] ? mempool_uaf_helper+0x392/0x400 [ 27.162338] kasan_report+0x141/0x180 [ 27.162360] ? mempool_uaf_helper+0x392/0x400 [ 27.162386] __asan_report_load1_noabort+0x18/0x20 [ 27.162410] mempool_uaf_helper+0x392/0x400 [ 27.162432] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 27.162453] ? update_load_avg+0x1be/0x21b0 [ 27.162486] ? update_curr+0x7d/0x7f0 [ 27.162507] ? finish_task_switch.isra.0+0x153/0x700 [ 27.162532] mempool_kmalloc_uaf+0xef/0x140 [ 27.162553] ? __pfx_mempool_kmalloc_uaf+0x10/0x10 [ 27.162578] ? __pfx_mempool_kmalloc+0x10/0x10 [ 27.162599] ? __pfx_mempool_kfree+0x10/0x10 [ 27.162623] ? __pfx_read_tsc+0x10/0x10 [ 27.162645] ? ktime_get_ts64+0x86/0x230 [ 27.162667] kunit_try_run_case+0x1a5/0x480 [ 27.162691] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.162712] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.162735] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.162758] ? __kthread_parkme+0x82/0x180 [ 27.162782] ? preempt_count_sub+0x50/0x80 [ 27.162804] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.162827] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.162849] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.162872] kthread+0x337/0x6f0 [ 27.162890] ? trace_preempt_on+0x20/0xc0 [ 27.162912] ? __pfx_kthread+0x10/0x10 [ 27.162931] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.162952] ? calculate_sigpending+0x7b/0xa0 [ 27.162975] ? __pfx_kthread+0x10/0x10 [ 27.162996] ret_from_fork+0x116/0x1d0 [ 27.163014] ? __pfx_kthread+0x10/0x10 [ 27.163034] ret_from_fork_asm+0x1a/0x30 [ 27.163065] </TASK> [ 27.163075] [ 27.171877] Allocated by task 276: [ 27.172148] kasan_save_stack+0x45/0x70 [ 27.172470] kasan_save_track+0x18/0x40 [ 27.173158] kasan_save_alloc_info+0x3b/0x50 [ 27.174098] __kasan_mempool_unpoison_object+0x1a9/0x200 [ 27.174450] remove_element+0x11e/0x190 [ 27.174815] mempool_alloc_preallocated+0x4d/0x90 [ 27.175032] mempool_uaf_helper+0x96/0x400 [ 27.175225] mempool_kmalloc_uaf+0xef/0x140 [ 27.175485] kunit_try_run_case+0x1a5/0x480 [ 27.175667] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.175898] kthread+0x337/0x6f0 [ 27.176046] ret_from_fork+0x116/0x1d0 [ 27.176224] ret_from_fork_asm+0x1a/0x30 [ 27.176544] [ 27.176630] Freed by task 276: [ 27.176770] kasan_save_stack+0x45/0x70 [ 27.176944] kasan_save_track+0x18/0x40 [ 27.177168] kasan_save_free_info+0x3f/0x60 [ 27.177315] __kasan_mempool_poison_object+0x131/0x1d0 [ 27.177477] mempool_free+0x2ec/0x380 [ 27.177777] mempool_uaf_helper+0x11a/0x400 [ 27.177980] mempool_kmalloc_uaf+0xef/0x140 [ 27.178197] kunit_try_run_case+0x1a5/0x480 [ 27.178484] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.178748] kthread+0x337/0x6f0 [ 27.178907] ret_from_fork+0x116/0x1d0 [ 27.179096] ret_from_fork_asm+0x1a/0x30 [ 27.179349] [ 27.179434] The buggy address belongs to the object at ffff888104588000 [ 27.179434] which belongs to the cache kmalloc-128 of size 128 [ 27.179889] The buggy address is located 0 bytes inside of [ 27.179889] freed 128-byte region [ffff888104588000, ffff888104588080) [ 27.180431] [ 27.180531] The buggy address belongs to the physical page: [ 27.180764] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104588 [ 27.181109] flags: 0x200000000000000(node=0|zone=2) [ 27.181363] page_type: f5(slab) [ 27.181651] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 27.181987] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 27.182388] page dumped because: kasan: bad access detected [ 27.182572] [ 27.182661] Memory state around the buggy address: [ 27.182870] ffff888104587f00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.183195] ffff888104587f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.183534] >ffff888104588000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.183743] ^ [ 27.183851] ffff888104588080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.184057] ffff888104588100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 27.184271] ================================================================== [ 27.216624] ================================================================== [ 27.217054] BUG: KASAN: slab-use-after-free in mempool_uaf_helper+0x392/0x400 [ 27.217596] Read of size 1 at addr ffff888106189240 by task kunit_try_catch/280 [ 27.218018] [ 27.218421] CPU: 0 UID: 0 PID: 280 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) [ 27.218574] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.218588] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.218611] Call Trace: [ 27.218624] <TASK> [ 27.218642] dump_stack_lvl+0x73/0xb0 [ 27.218675] print_report+0xd1/0x610 [ 27.218697] ? __virt_addr_valid+0x1db/0x2d0 [ 27.218722] ? mempool_uaf_helper+0x392/0x400 [ 27.218744] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.218770] ? mempool_uaf_helper+0x392/0x400 [ 27.218792] kasan_report+0x141/0x180 [ 27.218813] ? mempool_uaf_helper+0x392/0x400 [ 27.218840] __asan_report_load1_noabort+0x18/0x20 [ 27.218863] mempool_uaf_helper+0x392/0x400 [ 27.218885] ? __pfx_mempool_uaf_helper+0x10/0x10 [ 27.218909] ? __pfx_sched_clock_cpu+0x10/0x10 [ 27.218930] ? finish_task_switch.isra.0+0x153/0x700 [ 27.218955] mempool_slab_uaf+0xea/0x140 [ 27.218976] ? __pfx_mempool_slab_uaf+0x10/0x10 [ 27.219001] ? __pfx_mempool_alloc_slab+0x10/0x10 [ 27.219024] ? __pfx_mempool_free_slab+0x10/0x10 [ 27.219049] ? __pfx_read_tsc+0x10/0x10 [ 27.219070] ? ktime_get_ts64+0x86/0x230 [ 27.219107] kunit_try_run_case+0x1a5/0x480 [ 27.219131] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.219153] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.219176] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.219198] ? __kthread_parkme+0x82/0x180 [ 27.219222] ? preempt_count_sub+0x50/0x80 [ 27.219291] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.219318] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.219341] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.219363] kthread+0x337/0x6f0 [ 27.219382] ? trace_preempt_on+0x20/0xc0 [ 27.219406] ? __pfx_kthread+0x10/0x10 [ 27.219426] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.219447] ? calculate_sigpending+0x7b/0xa0 [ 27.219469] ? __pfx_kthread+0x10/0x10 [ 27.219490] ret_from_fork+0x116/0x1d0 [ 27.219510] ? __pfx_kthread+0x10/0x10 [ 27.219529] ret_from_fork_asm+0x1a/0x30 [ 27.219561] </TASK> [ 27.219572] [ 27.230315] Allocated by task 280: [ 27.230666] kasan_save_stack+0x45/0x70 [ 27.230855] kasan_save_track+0x18/0x40 [ 27.231021] kasan_save_alloc_info+0x3b/0x50 [ 27.231220] __kasan_mempool_unpoison_object+0x1bb/0x200 [ 27.231808] remove_element+0x11e/0x190 [ 27.231966] mempool_alloc_preallocated+0x4d/0x90 [ 27.232500] mempool_uaf_helper+0x96/0x400 [ 27.232802] mempool_slab_uaf+0xea/0x140 [ 27.232954] kunit_try_run_case+0x1a5/0x480 [ 27.233173] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.233428] kthread+0x337/0x6f0 [ 27.233863] ret_from_fork+0x116/0x1d0 [ 27.234126] ret_from_fork_asm+0x1a/0x30 [ 27.234387] [ 27.234472] Freed by task 280: [ 27.234627] kasan_save_stack+0x45/0x70 [ 27.234813] kasan_save_track+0x18/0x40 [ 27.234992] kasan_save_free_info+0x3f/0x60 [ 27.235180] __kasan_mempool_poison_object+0x131/0x1d0 [ 27.235839] mempool_free+0x2ec/0x380 [ 27.236011] mempool_uaf_helper+0x11a/0x400 [ 27.236209] mempool_slab_uaf+0xea/0x140 [ 27.236682] kunit_try_run_case+0x1a5/0x480 [ 27.236846] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.237201] kthread+0x337/0x6f0 [ 27.237570] ret_from_fork+0x116/0x1d0 [ 27.237746] ret_from_fork_asm+0x1a/0x30 [ 27.237920] [ 27.237995] The buggy address belongs to the object at ffff888106189240 [ 27.237995] which belongs to the cache test_cache of size 123 [ 27.238924] The buggy address is located 0 bytes inside of [ 27.238924] freed 123-byte region [ffff888106189240, ffff8881061892bb) [ 27.239705] [ 27.239810] The buggy address belongs to the physical page: [ 27.240030] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106189 [ 27.240602] flags: 0x200000000000000(node=0|zone=2) [ 27.240818] page_type: f5(slab) [ 27.241114] raw: 0200000000000000 ffff888101e9ea00 dead000000000122 0000000000000000 [ 27.241628] raw: 0000000000000000 0000000080150015 00000000f5000000 0000000000000000 [ 27.241927] page dumped because: kasan: bad access detected [ 27.242174] [ 27.242239] Memory state around the buggy address: [ 27.242804] ffff888106189100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 27.243070] ffff888106189180: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.243586] >ffff888106189200: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 27.243947] ^ [ 27.244203] ffff888106189280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 27.244762] ffff888106189300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.245003] ==================================================================