Date
April 20, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 | |
| rk3399-rock-pi-4b |
[ 24.733296] ================================================================== [ 24.733471] BUG: KASAN: slab-use-after-free in kmem_cache_rcu_uaf+0x388/0x468 [ 24.733626] Read of size 1 at addr fff00000c67fd000 by task kunit_try_catch/215 [ 24.733749] [ 24.733837] CPU: 0 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc3 #1 PREEMPT [ 24.739362] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.739634] Hardware name: linux,dummy-virt (DT) [ 24.739878] Call trace: [ 24.740098] show_stack+0x20/0x38 (C) [ 24.740236] dump_stack_lvl+0x8c/0xd0 [ 24.741498] print_report+0x118/0x608 [ 24.741686] kasan_report+0xdc/0x128 [ 24.741799] __asan_report_load1_noabort+0x20/0x30 [ 24.743450] kmem_cache_rcu_uaf+0x388/0x468 [ 24.743626] kunit_try_run_case+0x170/0x3f0 [ 24.743742] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.743820] kthread+0x328/0x630 [ 24.743994] ret_from_fork+0x10/0x20 [ 24.744301] [ 24.744368] Allocated by task 215: [ 24.744476] kasan_save_stack+0x3c/0x68 [ 24.744579] kasan_save_track+0x20/0x40 [ 24.744667] kasan_save_alloc_info+0x40/0x58 [ 24.744903] __kasan_slab_alloc+0xa8/0xb0 [ 24.745035] kmem_cache_alloc_noprof+0x10c/0x3a0 [ 24.745168] kmem_cache_rcu_uaf+0x12c/0x468 [ 24.745264] kunit_try_run_case+0x170/0x3f0 [ 24.745359] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.745494] kthread+0x328/0x630 [ 24.745627] ret_from_fork+0x10/0x20 [ 24.745721] [ 24.745767] Freed by task 0: [ 24.745841] kasan_save_stack+0x3c/0x68 [ 24.745977] kasan_save_track+0x20/0x40 [ 24.746094] kasan_save_free_info+0x4c/0x78 [ 24.746192] __kasan_slab_free+0x6c/0x98 [ 24.746303] slab_free_after_rcu_debug+0xd4/0x2f8 [ 24.746403] rcu_core+0x9f4/0x1e20 [ 24.746521] rcu_core_si+0x18/0x30 [ 24.746629] handle_softirqs+0x374/0xb28 [ 24.746726] __do_softirq+0x1c/0x28 [ 24.746841] [ 24.746889] Last potentially related work creation: [ 24.747177] kasan_save_stack+0x3c/0x68 [ 24.747293] kasan_record_aux_stack+0xb4/0xc8 [ 24.747737] kmem_cache_free+0x120/0x470 [ 24.747899] kmem_cache_rcu_uaf+0x16c/0x468 [ 24.748158] kunit_try_run_case+0x170/0x3f0 [ 24.748371] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.748580] kthread+0x328/0x630 [ 24.748819] ret_from_fork+0x10/0x20 [ 24.749029] [ 24.749431] The buggy address belongs to the object at fff00000c67fd000 [ 24.749431] which belongs to the cache test_cache of size 200 [ 24.749718] The buggy address is located 0 bytes inside of [ 24.749718] freed 200-byte region [fff00000c67fd000, fff00000c67fd0c8) [ 24.749994] [ 24.750148] The buggy address belongs to the physical page: [ 24.750383] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1067fd [ 24.750673] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 24.750837] page_type: f5(slab) [ 24.750954] raw: 0bfffe0000000000 fff00000c1743a00 dead000000000122 0000000000000000 [ 24.751087] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 24.751306] page dumped because: kasan: bad access detected [ 24.751442] [ 24.751490] Memory state around the buggy address: [ 24.751565] fff00000c67fcf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 24.751986] fff00000c67fcf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 24.752527] >fff00000c67fd000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.752656] ^ [ 24.752731] fff00000c67fd080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 24.753437] fff00000c67fd100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.753546] ==================================================================
[ 12.264654] ================================================================== [ 12.265168] BUG: KASAN: slab-use-after-free in kmem_cache_rcu_uaf+0x3e3/0x510 [ 12.265565] Read of size 1 at addr ffff888102b47000 by task kunit_try_catch/233 [ 12.265862] [ 12.265953] CPU: 1 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc3 #1 PREEMPT(voluntary) [ 12.265998] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.266009] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.266030] Call Trace: [ 12.266043] <TASK> [ 12.266079] dump_stack_lvl+0x73/0xb0 [ 12.266107] print_report+0xd1/0x650 [ 12.266143] ? __virt_addr_valid+0x1db/0x2d0 [ 12.266166] ? kmem_cache_rcu_uaf+0x3e3/0x510 [ 12.266184] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.266219] ? kmem_cache_rcu_uaf+0x3e3/0x510 [ 12.266582] kasan_report+0x141/0x180 [ 12.266609] ? kmem_cache_rcu_uaf+0x3e3/0x510 [ 12.266634] __asan_report_load1_noabort+0x18/0x20 [ 12.266656] kmem_cache_rcu_uaf+0x3e3/0x510 [ 12.266676] ? __pfx_kmem_cache_rcu_uaf+0x10/0x10 [ 12.266695] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 12.266728] ? __pfx_kmem_cache_rcu_uaf+0x10/0x10 [ 12.266753] kunit_try_run_case+0x1a5/0x480 [ 12.266777] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.266799] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.266824] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.266847] ? __kthread_parkme+0x82/0x180 [ 12.266869] ? preempt_count_sub+0x50/0x80 [ 12.266895] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.266918] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.266940] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.266963] kthread+0x337/0x6f0 [ 12.266983] ? trace_preempt_on+0x20/0xc0 [ 12.267008] ? __pfx_kthread+0x10/0x10 [ 12.267030] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.267051] ? calculate_sigpending+0x7b/0xa0 [ 12.267074] ? __pfx_kthread+0x10/0x10 [ 12.267096] ret_from_fork+0x41/0x80 [ 12.267117] ? __pfx_kthread+0x10/0x10 [ 12.267139] ret_from_fork_asm+0x1a/0x30 [ 12.267172] </TASK> [ 12.267183] [ 12.275057] Allocated by task 233: [ 12.275271] kasan_save_stack+0x45/0x70 [ 12.275559] kasan_save_track+0x18/0x40 [ 12.275835] kasan_save_alloc_info+0x3b/0x50 [ 12.276074] __kasan_slab_alloc+0x91/0xa0 [ 12.276382] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.276758] kmem_cache_rcu_uaf+0x155/0x510 [ 12.276984] kunit_try_run_case+0x1a5/0x480 [ 12.277205] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.277609] kthread+0x337/0x6f0 [ 12.277803] ret_from_fork+0x41/0x80 [ 12.277955] ret_from_fork_asm+0x1a/0x30 [ 12.278133] [ 12.278226] Freed by task 0: [ 12.278493] kasan_save_stack+0x45/0x70 [ 12.278729] kasan_save_track+0x18/0x40 [ 12.278887] kasan_save_free_info+0x3f/0x60 [ 12.279079] __kasan_slab_free+0x56/0x70 [ 12.279443] slab_free_after_rcu_debug+0xe4/0x310 [ 12.279741] rcu_core+0x66c/0x1c30 [ 12.279877] rcu_core_si+0x12/0x20 [ 12.280135] handle_softirqs+0x209/0x730 [ 12.280422] __irq_exit_rcu+0xc9/0x110 [ 12.280559] irq_exit_rcu+0x12/0x20 [ 12.280914] sysvec_apic_timer_interrupt+0x81/0x90 [ 12.281337] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 12.281730] [ 12.281812] Last potentially related work creation: [ 12.281965] kasan_save_stack+0x45/0x70 [ 12.282590] kasan_record_aux_stack+0xb2/0xc0 [ 12.282892] kmem_cache_free+0x131/0x420 [ 12.283097] kmem_cache_rcu_uaf+0x194/0x510 [ 12.283317] kunit_try_run_case+0x1a5/0x480 [ 12.283578] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.283809] kthread+0x337/0x6f0 [ 12.284049] ret_from_fork+0x41/0x80 [ 12.284215] ret_from_fork_asm+0x1a/0x30 [ 12.284627] [ 12.284718] The buggy address belongs to the object at ffff888102b47000 [ 12.284718] which belongs to the cache test_cache of size 200 [ 12.285641] The buggy address is located 0 bytes inside of [ 12.285641] freed 200-byte region [ffff888102b47000, ffff888102b470c8) [ 12.286096] [ 12.286191] The buggy address belongs to the physical page: [ 12.286516] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b47 [ 12.287228] flags: 0x200000000000000(node=0|zone=2) [ 12.287449] page_type: f5(slab) [ 12.287749] raw: 0200000000000000 ffff88810103c500 dead000000000122 0000000000000000 [ 12.288101] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 12.288749] page dumped because: kasan: bad access detected [ 12.288989] [ 12.289110] Memory state around the buggy address: [ 12.289630] ffff888102b46f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.290063] ffff888102b46f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.290728] >ffff888102b47000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.291051] ^ [ 12.291403] ffff888102b47080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 12.291881] ffff888102b47100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.292352] ==================================================================
[ 22.330527] ================================================================== [ 22.331649] BUG: KASAN: slab-use-after-free in kmem_cache_rcu_uaf+0x388/0x468 [ 22.332348] Read of size 1 at addr ffff00000e9c4000 by task kunit_try_catch/267 [ 22.333037] [ 22.333209] CPU: 2 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc3 #1 PREEMPT [ 22.333268] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.333287] Hardware name: Radxa ROCK Pi 4B (DT) [ 22.333307] Call trace: [ 22.333321] show_stack+0x20/0x38 (C) [ 22.333362] dump_stack_lvl+0x8c/0xd0 [ 22.333400] print_report+0x118/0x608 [ 22.333437] kasan_report+0xdc/0x128 [ 22.333473] __asan_report_load1_noabort+0x20/0x30 [ 22.333514] kmem_cache_rcu_uaf+0x388/0x468 [ 22.333557] kunit_try_run_case+0x170/0x3f0 [ 22.333601] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.333649] kthread+0x328/0x630 [ 22.333691] ret_from_fork+0x10/0x20 [ 22.333732] [ 22.339354] Allocated by task 267: [ 22.339690] kasan_save_stack+0x3c/0x68 [ 22.340073] kasan_save_track+0x20/0x40 [ 22.340455] kasan_save_alloc_info+0x40/0x58 [ 22.340879] __kasan_slab_alloc+0xa8/0xb0 [ 22.341276] kmem_cache_alloc_noprof+0x10c/0x3a0 [ 22.341729] kmem_cache_rcu_uaf+0x12c/0x468 [ 22.342148] kunit_try_run_case+0x170/0x3f0 [ 22.342569] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.343105] kthread+0x328/0x630 [ 22.343438] ret_from_fork+0x10/0x20 [ 22.343799] [ 22.343958] Freed by task 0: [ 22.344245] kasan_save_stack+0x3c/0x68 [ 22.344627] kasan_save_track+0x20/0x40 [ 22.345009] kasan_save_free_info+0x4c/0x78 [ 22.345422] __kasan_slab_free+0x6c/0x98 [ 22.345811] slab_free_after_rcu_debug+0xd4/0x2f8 [ 22.346269] rcu_core+0x9f4/0x1e20 [ 22.346614] rcu_core_si+0x18/0x30 [ 22.346957] handle_softirqs+0x374/0xb28 [ 22.347348] __do_softirq+0x1c/0x28 [ 22.347697] [ 22.347856] Last potentially related work creation: [ 22.348315] kasan_save_stack+0x3c/0x68 [ 22.348698] kasan_record_aux_stack+0xb4/0xc8 [ 22.349129] kmem_cache_free+0x120/0x470 [ 22.349517] kmem_cache_rcu_uaf+0x16c/0x468 [ 22.349937] kunit_try_run_case+0x170/0x3f0 [ 22.350354] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.350891] kthread+0x328/0x630 [ 22.351225] ret_from_fork+0x10/0x20 [ 22.351585] [ 22.351744] The buggy address belongs to the object at ffff00000e9c4000 [ 22.351744] which belongs to the cache test_cache of size 200 [ 22.352882] The buggy address is located 0 bytes inside of [ 22.352882] freed 200-byte region [ffff00000e9c4000, ffff00000e9c40c8) [ 22.353992] [ 22.354154] The buggy address belongs to the physical page: [ 22.354678] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe9c4 [ 22.355413] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 22.356130] flags: 0x3fffe0000000040(head|node=0|zone=0|lastcpupid=0x1ffff) [ 22.356794] page_type: f5(slab) [ 22.357116] raw: 03fffe0000000040 ffff00000e9c2000 dead000000000122 0000000000000000 [ 22.357843] raw: 0000000000000000 00000000801f001f 00000000f5000000 0000000000000000 [ 22.358571] head: 03fffe0000000040 ffff00000e9c2000 dead000000000122 0000000000000000 [ 22.359304] head: 0000000000000000 00000000801f001f 00000000f5000000 0000000000000000 [ 22.360038] head: 03fffe0000000001 fffffdffc03a7101 00000000ffffffff 00000000ffffffff [ 22.360773] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 22.361496] page dumped because: kasan: bad access detected [ 22.362017] [ 22.362176] Memory state around the buggy address: [ 22.362632] ffff00000e9c3f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.363308] ffff00000e9c3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.363983] >ffff00000e9c4000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.364654] ^ [ 22.364973] ffff00000e9c4080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 22.365649] ffff00000e9c4100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.366320] ==================================================================