Date
April 22, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 | |
| rk3399-rock-pi-4b |
[ 19.096687] ================================================================== [ 19.096812] BUG: KASAN: slab-use-after-free in kmem_cache_rcu_uaf+0x388/0x468 [ 19.096902] Read of size 1 at addr fff00000c5d5f000 by task kunit_try_catch/215 [ 19.096957] [ 19.097018] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc3 #1 PREEMPT [ 19.097111] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.097142] Hardware name: linux,dummy-virt (DT) [ 19.097200] Call trace: [ 19.097232] show_stack+0x20/0x38 (C) [ 19.097292] dump_stack_lvl+0x8c/0xd0 [ 19.097343] print_report+0x118/0x608 [ 19.097390] kasan_report+0xdc/0x128 [ 19.097436] __asan_report_load1_noabort+0x20/0x30 [ 19.097506] kmem_cache_rcu_uaf+0x388/0x468 [ 19.097611] kunit_try_run_case+0x170/0x3f0 [ 19.097663] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.098065] kthread+0x328/0x630 [ 19.098120] ret_from_fork+0x10/0x20 [ 19.098174] [ 19.098193] Allocated by task 215: [ 19.098740] kasan_save_stack+0x3c/0x68 [ 19.098821] kasan_save_track+0x20/0x40 [ 19.098863] kasan_save_alloc_info+0x40/0x58 [ 19.098915] __kasan_slab_alloc+0xa8/0xb0 [ 19.098954] kmem_cache_alloc_noprof+0x10c/0x3a0 [ 19.098994] kmem_cache_rcu_uaf+0x12c/0x468 [ 19.099033] kunit_try_run_case+0x170/0x3f0 [ 19.099071] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.099114] kthread+0x328/0x630 [ 19.099150] ret_from_fork+0x10/0x20 [ 19.099185] [ 19.099207] Freed by task 0: [ 19.099237] kasan_save_stack+0x3c/0x68 [ 19.099274] kasan_save_track+0x20/0x40 [ 19.099321] kasan_save_free_info+0x4c/0x78 [ 19.099359] __kasan_slab_free+0x6c/0x98 [ 19.099393] slab_free_after_rcu_debug+0xd4/0x2f8 [ 19.099432] rcu_core+0x9f4/0x1e20 [ 19.099466] rcu_core_si+0x18/0x30 [ 19.099500] handle_softirqs+0x374/0xb28 [ 19.099548] __do_softirq+0x1c/0x28 [ 19.099585] [ 19.099606] Last potentially related work creation: [ 19.099633] kasan_save_stack+0x3c/0x68 [ 19.099669] kasan_record_aux_stack+0xb4/0xc8 [ 19.100158] kmem_cache_free+0x120/0x470 [ 19.100227] kmem_cache_rcu_uaf+0x16c/0x468 [ 19.100269] kunit_try_run_case+0x170/0x3f0 [ 19.100309] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.100352] kthread+0x328/0x630 [ 19.100387] ret_from_fork+0x10/0x20 [ 19.100423] [ 19.100444] The buggy address belongs to the object at fff00000c5d5f000 [ 19.100444] which belongs to the cache test_cache of size 200 [ 19.100507] The buggy address is located 0 bytes inside of [ 19.100507] freed 200-byte region [fff00000c5d5f000, fff00000c5d5f0c8) [ 19.100580] [ 19.100605] The buggy address belongs to the physical page: [ 19.100636] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105d5f [ 19.100694] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.100754] page_type: f5(slab) [ 19.100798] raw: 0bfffe0000000000 fff00000c1288780 dead000000000122 0000000000000000 [ 19.100849] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 19.100892] page dumped because: kasan: bad access detected [ 19.100923] [ 19.100940] Memory state around the buggy address: [ 19.100975] fff00000c5d5ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 19.101020] fff00000c5d5ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 19.101323] >fff00000c5d5f000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.101387] ^ [ 19.101421] fff00000c5d5f080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 19.101474] fff00000c5d5f100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.101527] ==================================================================
[ 19.465857] ================================================================== [ 19.466644] BUG: KASAN: slab-use-after-free in kmem_cache_rcu_uaf+0x3e3/0x510 [ 19.467958] Read of size 1 at addr ffff88810297c000 by task kunit_try_catch/233 [ 19.469092] [ 19.469291] CPU: 1 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc3 #1 PREEMPT(voluntary) [ 19.469404] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.469598] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.469899] Call Trace: [ 19.469956] <TASK> [ 19.470015] dump_stack_lvl+0x73/0xb0 [ 19.470110] print_report+0xd1/0x650 [ 19.470187] ? __virt_addr_valid+0x1db/0x2d0 [ 19.470254] ? kmem_cache_rcu_uaf+0x3e3/0x510 [ 19.470284] ? kasan_complete_mode_report_info+0x64/0x200 [ 19.470316] ? kmem_cache_rcu_uaf+0x3e3/0x510 [ 19.470344] kasan_report+0x141/0x180 [ 19.470375] ? kmem_cache_rcu_uaf+0x3e3/0x510 [ 19.470408] __asan_report_load1_noabort+0x18/0x20 [ 19.470445] kmem_cache_rcu_uaf+0x3e3/0x510 [ 19.470562] ? __pfx_kmem_cache_rcu_uaf+0x10/0x10 [ 19.470607] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 19.470653] ? __pfx_kmem_cache_rcu_uaf+0x10/0x10 [ 19.470686] kunit_try_run_case+0x1a5/0x480 [ 19.470722] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.470751] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 19.470784] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.470816] ? __kthread_parkme+0x82/0x180 [ 19.470848] ? preempt_count_sub+0x50/0x80 [ 19.470882] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.470913] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.470943] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.470973] kthread+0x337/0x6f0 [ 19.471001] ? trace_preempt_on+0x20/0xc0 [ 19.471036] ? __pfx_kthread+0x10/0x10 [ 19.471066] ? _raw_spin_unlock_irq+0x47/0x80 [ 19.471095] ? calculate_sigpending+0x7b/0xa0 [ 19.471124] ? __pfx_kthread+0x10/0x10 [ 19.471154] ret_from_fork+0x41/0x80 [ 19.471184] ? __pfx_kthread+0x10/0x10 [ 19.471214] ret_from_fork_asm+0x1a/0x30 [ 19.471258] </TASK> [ 19.471273] [ 19.489078] Allocated by task 233: [ 19.489694] kasan_save_stack+0x45/0x70 [ 19.490197] kasan_save_track+0x18/0x40 [ 19.490742] kasan_save_alloc_info+0x3b/0x50 [ 19.491230] __kasan_slab_alloc+0x91/0xa0 [ 19.491821] kmem_cache_alloc_noprof+0x123/0x3f0 [ 19.492342] kmem_cache_rcu_uaf+0x155/0x510 [ 19.493184] kunit_try_run_case+0x1a5/0x480 [ 19.493848] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.494324] kthread+0x337/0x6f0 [ 19.494789] ret_from_fork+0x41/0x80 [ 19.495299] ret_from_fork_asm+0x1a/0x30 [ 19.495937] [ 19.496162] Freed by task 0: [ 19.497002] kasan_save_stack+0x45/0x70 [ 19.497423] kasan_save_track+0x18/0x40 [ 19.498050] kasan_save_free_info+0x3f/0x60 [ 19.498609] __kasan_slab_free+0x56/0x70 [ 19.499060] slab_free_after_rcu_debug+0xe4/0x310 [ 19.499789] rcu_core+0x66c/0x1c30 [ 19.500180] rcu_core_si+0x12/0x20 [ 19.500896] handle_softirqs+0x209/0x730 [ 19.501308] __irq_exit_rcu+0xc9/0x110 [ 19.501957] irq_exit_rcu+0x12/0x20 [ 19.502414] sysvec_apic_timer_interrupt+0x81/0x90 [ 19.503035] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 19.503771] [ 19.504039] Last potentially related work creation: [ 19.504461] kasan_save_stack+0x45/0x70 [ 19.505217] kasan_record_aux_stack+0xb2/0xc0 [ 19.505880] kmem_cache_free+0x131/0x420 [ 19.506339] kmem_cache_rcu_uaf+0x194/0x510 [ 19.507063] kunit_try_run_case+0x1a5/0x480 [ 19.507257] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.507531] kthread+0x337/0x6f0 [ 19.507987] ret_from_fork+0x41/0x80 [ 19.508983] ret_from_fork_asm+0x1a/0x30 [ 19.509476] [ 19.509715] The buggy address belongs to the object at ffff88810297c000 [ 19.509715] which belongs to the cache test_cache of size 200 [ 19.511222] The buggy address is located 0 bytes inside of [ 19.511222] freed 200-byte region [ffff88810297c000, ffff88810297c0c8) [ 19.512226] [ 19.512546] The buggy address belongs to the physical page: [ 19.513686] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10297c [ 19.514382] flags: 0x200000000000000(node=0|zone=2) [ 19.515109] page_type: f5(slab) [ 19.515526] raw: 0200000000000000 ffff888101ad4b40 dead000000000122 0000000000000000 [ 19.516579] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 19.517480] page dumped because: kasan: bad access detected [ 19.518173] [ 19.518362] Memory state around the buggy address: [ 19.519242] ffff88810297bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.519853] ffff88810297bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.520398] >ffff88810297c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.520980] ^ [ 19.521344] ffff88810297c080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 19.522125] ffff88810297c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.523131] ==================================================================
[ 20.634095] ================================================================== [ 20.635244] BUG: KASAN: slab-use-after-free in kmem_cache_rcu_uaf+0x388/0x468 [ 20.635965] Read of size 1 at addr ffff00000c884000 by task kunit_try_catch/271 [ 20.636674] [ 20.636858] CPU: 3 UID: 0 PID: 271 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc3 #1 PREEMPT [ 20.636938] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.636963] Hardware name: Radxa ROCK Pi 4B (DT) [ 20.636991] Call trace: [ 20.637009] show_stack+0x20/0x38 (C) [ 20.637062] dump_stack_lvl+0x8c/0xd0 [ 20.637113] print_report+0x118/0x608 [ 20.637163] kasan_report+0xdc/0x128 [ 20.637209] __asan_report_load1_noabort+0x20/0x30 [ 20.637266] kmem_cache_rcu_uaf+0x388/0x468 [ 20.637325] kunit_try_run_case+0x170/0x3f0 [ 20.637382] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.637447] kthread+0x328/0x630 [ 20.637503] ret_from_fork+0x10/0x20 [ 20.637558] [ 20.643169] Allocated by task 271: [ 20.643506] kasan_save_stack+0x3c/0x68 [ 20.643888] kasan_save_track+0x20/0x40 [ 20.644260] kasan_save_alloc_info+0x40/0x58 [ 20.644675] __kasan_slab_alloc+0xa8/0xb0 [ 20.645061] kmem_cache_alloc_noprof+0x10c/0x3a0 [ 20.645505] kmem_cache_rcu_uaf+0x12c/0x468 [ 20.645914] kunit_try_run_case+0x170/0x3f0 [ 20.646324] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.646848] kthread+0x328/0x630 [ 20.647171] ret_from_fork+0x10/0x20 [ 20.647521] [ 20.647674] Freed by task 0: [ 20.647954] kasan_save_stack+0x3c/0x68 [ 20.648324] kasan_save_track+0x20/0x40 [ 20.648696] kasan_save_free_info+0x4c/0x78 [ 20.649101] __kasan_slab_free+0x6c/0x98 [ 20.649479] slab_free_after_rcu_debug+0xd4/0x2f8 [ 20.649928] rcu_core+0x9f4/0x1e20 [ 20.650263] rcu_core_si+0x18/0x30 [ 20.650595] handle_softirqs+0x374/0xb28 [ 20.650978] __do_softirq+0x1c/0x28 [ 20.651318] [ 20.651471] Last potentially related work creation: [ 20.651923] kasan_save_stack+0x3c/0x68 [ 20.652295] kasan_record_aux_stack+0xb4/0xc8 [ 20.652713] kmem_cache_free+0x120/0x470 [ 20.653092] kmem_cache_rcu_uaf+0x16c/0x468 [ 20.653501] kunit_try_run_case+0x170/0x3f0 [ 20.653908] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.654434] kthread+0x328/0x630 [ 20.654758] ret_from_fork+0x10/0x20 [ 20.655108] [ 20.655261] The buggy address belongs to the object at ffff00000c884000 [ 20.655261] which belongs to the cache test_cache of size 200 [ 20.656389] The buggy address is located 0 bytes inside of [ 20.656389] freed 200-byte region [ffff00000c884000, ffff00000c8840c8) [ 20.657486] [ 20.657641] The buggy address belongs to the physical page: [ 20.658157] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc884 [ 20.658882] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 20.659589] flags: 0x3fffe0000000040(head|node=0|zone=0|lastcpupid=0x1ffff) [ 20.660241] page_type: f5(slab) [ 20.660555] raw: 03fffe0000000040 ffff00000ca9e280 dead000000000122 0000000000000000 [ 20.661271] raw: 0000000000000000 00000000801f001f 00000000f5000000 0000000000000000 [ 20.661986] head: 03fffe0000000040 ffff00000ca9e280 dead000000000122 0000000000000000 [ 20.662711] head: 0000000000000000 00000000801f001f 00000000f5000000 0000000000000000 [ 20.663435] head: 03fffe0000000001 fffffdffc0322101 00000000ffffffff 00000000ffffffff [ 20.664158] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 20.664873] page dumped because: kasan: bad access detected [ 20.665388] [ 20.665541] Memory state around the buggy address: [ 20.665990] ffff00000c883f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.666658] ffff00000c883f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 20.667325] >ffff00000c884000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.667986] ^ [ 20.668297] ffff00000c884080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 20.668963] ffff00000c884100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.669625] ==================================================================