Date
July 2, 2025, 11:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 32.184418] ================================================================== [ 32.184517] BUG: KASAN: slab-use-after-free in kmem_cache_rcu_uaf+0x388/0x468 [ 32.184598] Read of size 1 at addr fff00000c406b000 by task kunit_try_catch/246 [ 32.184650] [ 32.184695] CPU: 0 UID: 0 PID: 246 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250702 #1 PREEMPT [ 32.184789] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.184818] Hardware name: linux,dummy-virt (DT) [ 32.184986] Call trace: [ 32.185018] show_stack+0x20/0x38 (C) [ 32.185185] dump_stack_lvl+0x8c/0xd0 [ 32.185285] print_report+0x118/0x608 [ 32.185444] kasan_report+0xdc/0x128 [ 32.185492] __asan_report_load1_noabort+0x20/0x30 [ 32.185654] kmem_cache_rcu_uaf+0x388/0x468 [ 32.185718] kunit_try_run_case+0x170/0x3f0 [ 32.185816] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.185892] kthread+0x328/0x630 [ 32.186151] ret_from_fork+0x10/0x20 [ 32.186214] [ 32.186369] Allocated by task 246: [ 32.186834] kasan_save_stack+0x3c/0x68 [ 32.186902] kasan_save_track+0x20/0x40 [ 32.187132] kasan_save_alloc_info+0x40/0x58 [ 32.187209] __kasan_slab_alloc+0xa8/0xb0 [ 32.187294] kmem_cache_alloc_noprof+0x10c/0x398 [ 32.187357] kmem_cache_rcu_uaf+0x12c/0x468 [ 32.187414] kunit_try_run_case+0x170/0x3f0 [ 32.187454] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.187499] kthread+0x328/0x630 [ 32.187661] ret_from_fork+0x10/0x20 [ 32.187736] [ 32.187999] Freed by task 0: [ 32.188068] kasan_save_stack+0x3c/0x68 [ 32.188154] kasan_save_track+0x20/0x40 [ 32.188272] kasan_save_free_info+0x4c/0x78 [ 32.188342] __kasan_slab_free+0x6c/0x98 [ 32.188427] slab_free_after_rcu_debug+0xd4/0x2f8 [ 32.188513] rcu_core+0x9f4/0x1e20 [ 32.188562] rcu_core_si+0x18/0x30 [ 32.188597] handle_softirqs+0x374/0xb28 [ 32.188634] __do_softirq+0x1c/0x28 [ 32.188669] [ 32.188689] Last potentially related work creation: [ 32.188739] kasan_save_stack+0x3c/0x68 [ 32.188780] kasan_record_aux_stack+0xb4/0xc8 [ 32.188816] kmem_cache_free+0x120/0x468 [ 32.189020] kmem_cache_rcu_uaf+0x16c/0x468 [ 32.189132] kunit_try_run_case+0x170/0x3f0 [ 32.189233] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.189291] kthread+0x328/0x630 [ 32.189322] ret_from_fork+0x10/0x20 [ 32.189517] [ 32.189654] The buggy address belongs to the object at fff00000c406b000 [ 32.189654] which belongs to the cache test_cache of size 200 [ 32.189783] The buggy address is located 0 bytes inside of [ 32.189783] freed 200-byte region [fff00000c406b000, fff00000c406b0c8) [ 32.189894] [ 32.190013] The buggy address belongs to the physical page: [ 32.190068] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10406b [ 32.190147] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 32.190254] page_type: f5(slab) [ 32.190325] raw: 0bfffe0000000000 fff00000c3fa2780 dead000000000122 0000000000000000 [ 32.190378] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 32.190423] page dumped because: kasan: bad access detected [ 32.190465] [ 32.190484] Memory state around the buggy address: [ 32.190523] fff00000c406af00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 32.190568] fff00000c406af80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 32.190614] >fff00000c406b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.190664] ^ [ 32.190693] fff00000c406b080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 32.190752] fff00000c406b100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.190791] ==================================================================
[ 33.896946] ================================================================== [ 33.897068] BUG: KASAN: slab-use-after-free in kmem_cache_rcu_uaf+0x388/0x468 [ 33.897245] Read of size 1 at addr fff00000c9a51000 by task kunit_try_catch/244 [ 33.897377] [ 33.897426] CPU: 0 UID: 0 PID: 244 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250702 #1 PREEMPT [ 33.897684] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.897719] Hardware name: linux,dummy-virt (DT) [ 33.897757] Call trace: [ 33.897784] show_stack+0x20/0x38 (C) [ 33.898054] dump_stack_lvl+0x8c/0xd0 [ 33.898133] print_report+0x118/0x608 [ 33.898276] kasan_report+0xdc/0x128 [ 33.898341] __asan_report_load1_noabort+0x20/0x30 [ 33.898628] kmem_cache_rcu_uaf+0x388/0x468 [ 33.898744] kunit_try_run_case+0x170/0x3f0 [ 33.898807] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.898863] kthread+0x328/0x630 [ 33.898968] ret_from_fork+0x10/0x20 [ 33.899050] [ 33.899079] Allocated by task 244: [ 33.899129] kasan_save_stack+0x3c/0x68 [ 33.899246] kasan_save_track+0x20/0x40 [ 33.899284] kasan_save_alloc_info+0x40/0x58 [ 33.899324] __kasan_slab_alloc+0xa8/0xb0 [ 33.899361] kmem_cache_alloc_noprof+0x10c/0x398 [ 33.899746] kmem_cache_rcu_uaf+0x12c/0x468 [ 33.899809] kunit_try_run_case+0x170/0x3f0 [ 33.899981] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.900058] kthread+0x328/0x630 [ 33.900201] ret_from_fork+0x10/0x20 [ 33.900269] [ 33.900296] Freed by task 0: [ 33.900326] kasan_save_stack+0x3c/0x68 [ 33.900659] kasan_save_track+0x20/0x40 [ 33.900826] kasan_save_free_info+0x4c/0x78 [ 33.900895] __kasan_slab_free+0x6c/0x98 [ 33.901026] slab_free_after_rcu_debug+0xd4/0x2f8 [ 33.901116] rcu_core+0x9f4/0x1e20 [ 33.901198] rcu_core_si+0x18/0x30 [ 33.901344] handle_softirqs+0x374/0xb28 [ 33.901389] __do_softirq+0x1c/0x28 [ 33.901448] [ 33.902077] Last potentially related work creation: [ 33.902133] kasan_save_stack+0x3c/0x68 [ 33.902827] kasan_record_aux_stack+0xb4/0xc8 [ 33.903270] kmem_cache_free+0x120/0x468 [ 33.903374] kmem_cache_rcu_uaf+0x16c/0x468 [ 33.903507] kunit_try_run_case+0x170/0x3f0 [ 33.903585] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.903879] kthread+0x328/0x630 [ 33.904006] ret_from_fork+0x10/0x20 [ 33.904383] [ 33.904443] The buggy address belongs to the object at fff00000c9a51000 [ 33.904443] which belongs to the cache test_cache of size 200 [ 33.904568] The buggy address is located 0 bytes inside of [ 33.904568] freed 200-byte region [fff00000c9a51000, fff00000c9a510c8) [ 33.904663] [ 33.904754] The buggy address belongs to the physical page: [ 33.904821] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109a51 [ 33.904928] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.904986] page_type: f5(slab) [ 33.905030] raw: 0bfffe0000000000 fff00000c5c33280 dead000000000122 0000000000000000 [ 33.905223] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 33.905378] page dumped because: kasan: bad access detected [ 33.905563] [ 33.905766] Memory state around the buggy address: [ 33.905836] fff00000c9a50f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.905948] fff00000c9a50f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.906049] >fff00000c9a51000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.906179] ^ [ 33.906236] fff00000c9a51080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 33.906311] fff00000c9a51100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.906388] ==================================================================
[ 24.103371] ================================================================== [ 24.103887] BUG: KASAN: slab-use-after-free in kmem_cache_rcu_uaf+0x3e3/0x510 [ 24.104163] Read of size 1 at addr ffff888105a16000 by task kunit_try_catch/262 [ 24.105248] [ 24.105718] CPU: 0 UID: 0 PID: 262 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250702 #1 PREEMPT(voluntary) [ 24.105782] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.105796] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.105827] Call Trace: [ 24.105844] <TASK> [ 24.105867] dump_stack_lvl+0x73/0xb0 [ 24.105904] print_report+0xd1/0x650 [ 24.105929] ? __virt_addr_valid+0x1db/0x2d0 [ 24.105954] ? kmem_cache_rcu_uaf+0x3e3/0x510 [ 24.106012] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.106038] ? kmem_cache_rcu_uaf+0x3e3/0x510 [ 24.106078] kasan_report+0x141/0x180 [ 24.106101] ? kmem_cache_rcu_uaf+0x3e3/0x510 [ 24.106139] __asan_report_load1_noabort+0x18/0x20 [ 24.106163] kmem_cache_rcu_uaf+0x3e3/0x510 [ 24.106196] ? __pfx_kmem_cache_rcu_uaf+0x10/0x10 [ 24.106219] ? finish_task_switch.isra.0+0x153/0x700 [ 24.106245] ? __switch_to+0x47/0xf50 [ 24.106275] ? __pfx_read_tsc+0x10/0x10 [ 24.106298] ? ktime_get_ts64+0x86/0x230 [ 24.106324] kunit_try_run_case+0x1a5/0x480 [ 24.106352] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.106376] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 24.106399] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.106421] ? __kthread_parkme+0x82/0x180 [ 24.106442] ? preempt_count_sub+0x50/0x80 [ 24.106465] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.106490] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.106514] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.106539] kthread+0x337/0x6f0 [ 24.106559] ? trace_preempt_on+0x20/0xc0 [ 24.106584] ? __pfx_kthread+0x10/0x10 [ 24.106605] ? _raw_spin_unlock_irq+0x47/0x80 [ 24.106629] ? calculate_sigpending+0x7b/0xa0 [ 24.106654] ? __pfx_kthread+0x10/0x10 [ 24.106676] ret_from_fork+0x116/0x1d0 [ 24.106695] ? __pfx_kthread+0x10/0x10 [ 24.106716] ret_from_fork_asm+0x1a/0x30 [ 24.106747] </TASK> [ 24.106761] [ 24.117937] Allocated by task 262: [ 24.118114] kasan_save_stack+0x45/0x70 [ 24.118408] kasan_save_track+0x18/0x40 [ 24.118626] kasan_save_alloc_info+0x3b/0x50 [ 24.118820] __kasan_slab_alloc+0x91/0xa0 [ 24.118995] kmem_cache_alloc_noprof+0x123/0x3f0 [ 24.119319] kmem_cache_rcu_uaf+0x155/0x510 [ 24.119534] kunit_try_run_case+0x1a5/0x480 [ 24.119723] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.120001] kthread+0x337/0x6f0 [ 24.120453] ret_from_fork+0x116/0x1d0 [ 24.120660] ret_from_fork_asm+0x1a/0x30 [ 24.120810] [ 24.120875] Freed by task 0: [ 24.121000] kasan_save_stack+0x45/0x70 [ 24.121298] kasan_save_track+0x18/0x40 [ 24.121519] kasan_save_free_info+0x3f/0x60 [ 24.121725] __kasan_slab_free+0x56/0x70 [ 24.121950] slab_free_after_rcu_debug+0xe4/0x310 [ 24.122136] rcu_core+0x66f/0x1c40 [ 24.122386] rcu_core_si+0x12/0x20 [ 24.122545] handle_softirqs+0x209/0x730 [ 24.122675] __irq_exit_rcu+0xc9/0x110 [ 24.122797] irq_exit_rcu+0x12/0x20 [ 24.123002] sysvec_apic_timer_interrupt+0x81/0x90 [ 24.123299] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 24.123540] [ 24.123634] Last potentially related work creation: [ 24.123849] kasan_save_stack+0x45/0x70 [ 24.124055] kasan_record_aux_stack+0xb2/0xc0 [ 24.124484] kmem_cache_free+0x131/0x420 [ 24.124707] kmem_cache_rcu_uaf+0x194/0x510 [ 24.124887] kunit_try_run_case+0x1a5/0x480 [ 24.125110] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.125453] kthread+0x337/0x6f0 [ 24.125623] ret_from_fork+0x116/0x1d0 [ 24.125791] ret_from_fork_asm+0x1a/0x30 [ 24.125929] [ 24.126019] The buggy address belongs to the object at ffff888105a16000 [ 24.126019] which belongs to the cache test_cache of size 200 [ 24.126635] The buggy address is located 0 bytes inside of [ 24.126635] freed 200-byte region [ffff888105a16000, ffff888105a160c8) [ 24.127067] [ 24.127160] The buggy address belongs to the physical page: [ 24.127506] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a16 [ 24.127877] flags: 0x200000000000000(node=0|zone=2) [ 24.128317] page_type: f5(slab) [ 24.128599] raw: 0200000000000000 ffff888101095640 dead000000000122 0000000000000000 [ 24.128953] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 24.129358] page dumped because: kasan: bad access detected [ 24.129606] [ 24.129673] Memory state around the buggy address: [ 24.129854] ffff888105a15f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.130290] ffff888105a15f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.130581] >ffff888105a16000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.130818] ^ [ 24.130974] ffff888105a16080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 24.131287] ffff888105a16100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.131529] ==================================================================
[ 23.848942] ================================================================== [ 23.849490] BUG: KASAN: slab-use-after-free in kmem_cache_rcu_uaf+0x3e3/0x510 [ 23.850597] Read of size 1 at addr ffff8881058a3000 by task kunit_try_catch/261 [ 23.850997] [ 23.851398] CPU: 0 UID: 0 PID: 261 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250702 #1 PREEMPT(voluntary) [ 23.851462] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.851475] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 23.851499] Call Trace: [ 23.851514] <TASK> [ 23.851536] dump_stack_lvl+0x73/0xb0 [ 23.851573] print_report+0xd1/0x650 [ 23.851597] ? __virt_addr_valid+0x1db/0x2d0 [ 23.851624] ? kmem_cache_rcu_uaf+0x3e3/0x510 [ 23.851646] ? kasan_complete_mode_report_info+0x64/0x200 [ 23.851823] ? kmem_cache_rcu_uaf+0x3e3/0x510 [ 23.851858] kasan_report+0x141/0x180 [ 23.851882] ? kmem_cache_rcu_uaf+0x3e3/0x510 [ 23.851909] __asan_report_load1_noabort+0x18/0x20 [ 23.851933] kmem_cache_rcu_uaf+0x3e3/0x510 [ 23.851955] ? __pfx_kmem_cache_rcu_uaf+0x10/0x10 [ 23.851977] ? finish_task_switch.isra.0+0x153/0x700 [ 23.852002] ? __switch_to+0x47/0xf50 [ 23.852032] ? __pfx_read_tsc+0x10/0x10 [ 23.852056] ? ktime_get_ts64+0x86/0x230 [ 23.852082] kunit_try_run_case+0x1a5/0x480 [ 23.852111] ? __pfx_kunit_try_run_case+0x10/0x10 [ 23.852134] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 23.852156] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 23.852179] ? __kthread_parkme+0x82/0x180 [ 23.852201] ? preempt_count_sub+0x50/0x80 [ 23.852223] ? __pfx_kunit_try_run_case+0x10/0x10 [ 23.852248] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.852272] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 23.852296] kthread+0x337/0x6f0 [ 23.852333] ? trace_preempt_on+0x20/0xc0 [ 23.852358] ? __pfx_kthread+0x10/0x10 [ 23.852379] ? _raw_spin_unlock_irq+0x47/0x80 [ 23.852403] ? calculate_sigpending+0x7b/0xa0 [ 23.852427] ? __pfx_kthread+0x10/0x10 [ 23.852448] ret_from_fork+0x116/0x1d0 [ 23.852467] ? __pfx_kthread+0x10/0x10 [ 23.852488] ret_from_fork_asm+0x1a/0x30 [ 23.852520] </TASK> [ 23.852533] [ 23.863241] Allocated by task 261: [ 23.863424] kasan_save_stack+0x45/0x70 [ 23.863647] kasan_save_track+0x18/0x40 [ 23.863877] kasan_save_alloc_info+0x3b/0x50 [ 23.864073] __kasan_slab_alloc+0x91/0xa0 [ 23.864290] kmem_cache_alloc_noprof+0x123/0x3f0 [ 23.864529] kmem_cache_rcu_uaf+0x155/0x510 [ 23.864678] kunit_try_run_case+0x1a5/0x480 [ 23.864930] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.865342] kthread+0x337/0x6f0 [ 23.865515] ret_from_fork+0x116/0x1d0 [ 23.865939] ret_from_fork_asm+0x1a/0x30 [ 23.866163] [ 23.866234] Freed by task 0: [ 23.866351] kasan_save_stack+0x45/0x70 [ 23.866539] kasan_save_track+0x18/0x40 [ 23.866810] kasan_save_free_info+0x3f/0x60 [ 23.867074] __kasan_slab_free+0x56/0x70 [ 23.867292] slab_free_after_rcu_debug+0xe4/0x310 [ 23.867532] rcu_core+0x66f/0x1c40 [ 23.867761] rcu_core_si+0x12/0x20 [ 23.867927] handle_softirqs+0x209/0x730 [ 23.868108] __irq_exit_rcu+0xc9/0x110 [ 23.868231] irq_exit_rcu+0x12/0x20 [ 23.868406] sysvec_apic_timer_interrupt+0x81/0x90 [ 23.868625] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 23.868906] [ 23.868972] Last potentially related work creation: [ 23.869444] kasan_save_stack+0x45/0x70 [ 23.869654] kasan_record_aux_stack+0xb2/0xc0 [ 23.870167] kmem_cache_free+0x131/0x420 [ 23.870317] kmem_cache_rcu_uaf+0x194/0x510 [ 23.870481] kunit_try_run_case+0x1a5/0x480 [ 23.870887] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.871106] kthread+0x337/0x6f0 [ 23.871254] ret_from_fork+0x116/0x1d0 [ 23.871425] ret_from_fork_asm+0x1a/0x30 [ 23.872101] [ 23.872209] The buggy address belongs to the object at ffff8881058a3000 [ 23.872209] which belongs to the cache test_cache of size 200 [ 23.873162] The buggy address is located 0 bytes inside of [ 23.873162] freed 200-byte region [ffff8881058a3000, ffff8881058a30c8) [ 23.874104] [ 23.874190] The buggy address belongs to the physical page: [ 23.874436] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1058a3 [ 23.875069] flags: 0x200000000000000(node=0|zone=2) [ 23.875433] page_type: f5(slab) [ 23.875859] raw: 0200000000000000 ffff8881058a2000 dead000000000122 0000000000000000 [ 23.876293] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 23.876987] page dumped because: kasan: bad access detected [ 23.877300] [ 23.877521] Memory state around the buggy address: [ 23.877980] ffff8881058a2f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.878277] ffff8881058a2f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.878898] >ffff8881058a3000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.879242] ^ [ 23.879633] ffff8881058a3080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 23.880154] ffff8881058a3100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.880461] ==================================================================