Date
Dec. 5, 2024, 2:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.027778] ================================================================== [ 31.028927] BUG: KASAN: slab-use-after-free in rcu_uaf_reclaim+0x64/0x70 [ 31.029504] Read of size 4 at addr fff00000c63c1600 by task swapper/0/0 [ 31.030921] [ 31.031258] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 31.032793] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.033566] Hardware name: linux,dummy-virt (DT) [ 31.034145] Call trace: [ 31.034696] show_stack+0x20/0x38 (C) [ 31.035236] dump_stack_lvl+0x8c/0xd0 [ 31.035901] print_report+0x118/0x5e0 [ 31.036434] kasan_report+0xc8/0x118 [ 31.037263] __asan_report_load4_noabort+0x20/0x30 [ 31.037895] rcu_uaf_reclaim+0x64/0x70 [ 31.038546] rcu_core+0x9f4/0x1e20 [ 31.039253] rcu_core_si+0x18/0x30 [ 31.039793] handle_softirqs+0x374/0xb20 [ 31.040430] __do_softirq+0x1c/0x28 [ 31.040998] ____do_softirq+0x18/0x30 [ 31.041598] call_on_irq_stack+0x24/0x58 [ 31.042332] do_softirq_own_stack+0x24/0x38 [ 31.042955] __irq_exit_rcu+0x1fc/0x318 [ 31.043765] irq_exit_rcu+0x1c/0x80 [ 31.044721] el1_interrupt+0x38/0x58 [ 31.045339] el1h_64_irq_handler+0x18/0x28 [ 31.045975] el1h_64_irq+0x6c/0x70 [ 31.046690] arch_local_irq_enable+0x4/0x8 (P) [ 31.047827] default_idle_call+0x6c/0x78 (L) [ 31.048586] do_idle+0x384/0x4e8 [ 31.049067] cpu_startup_entry+0x64/0x80 [ 31.049746] rest_init+0x160/0x188 [ 31.050400] start_kernel+0x308/0x3d0 [ 31.050952] __primary_switched+0x8c/0xa0 [ 31.051923] [ 31.052268] Allocated by task 187: [ 31.053333] kasan_save_stack+0x3c/0x68 [ 31.053952] kasan_save_track+0x20/0x40 [ 31.054717] kasan_save_alloc_info+0x40/0x58 [ 31.055813] __kasan_kmalloc+0xd4/0xd8 [ 31.057072] __kmalloc_cache_noprof+0x15c/0x3c0 [ 31.058115] rcu_uaf+0xb0/0x2d0 [ 31.058894] kunit_try_run_case+0x14c/0x3d0 [ 31.060020] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.060663] kthread+0x24c/0x2d0 [ 31.061146] ret_from_fork+0x10/0x20 [ 31.061672] [ 31.062026] Freed by task 0: [ 31.062540] kasan_save_stack+0x3c/0x68 [ 31.063060] kasan_save_track+0x20/0x40 [ 31.063718] kasan_save_free_info+0x4c/0x78 [ 31.064795] __kasan_slab_free+0x6c/0x98 [ 31.065553] kfree+0x114/0x3c8 [ 31.066012] rcu_uaf_reclaim+0x28/0x70 [ 31.066751] rcu_core+0x9f4/0x1e20 [ 31.067222] rcu_core_si+0x18/0x30 [ 31.067837] handle_softirqs+0x374/0xb20 [ 31.068453] __do_softirq+0x1c/0x28 [ 31.069349] [ 31.069709] Last potentially related work creation: [ 31.070343] kasan_save_stack+0x3c/0x68 [ 31.070956] kasan_record_aux_stack+0xb4/0xc8 [ 31.072080] __call_rcu_common.constprop.0+0x74/0xa10 [ 31.073102] call_rcu+0x18/0x30 [ 31.073547] rcu_uaf+0x14c/0x2d0 [ 31.074097] kunit_try_run_case+0x14c/0x3d0 [ 31.074699] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.075783] kthread+0x24c/0x2d0 [ 31.076290] ret_from_fork+0x10/0x20 [ 31.076848] [ 31.077181] The buggy address belongs to the object at fff00000c63c1600 [ 31.077181] which belongs to the cache kmalloc-32 of size 32 [ 31.078608] The buggy address is located 0 bytes inside of [ 31.078608] freed 32-byte region [fff00000c63c1600, fff00000c63c1620) [ 31.080399] [ 31.080742] The buggy address belongs to the physical page: [ 31.081573] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1063c1 [ 31.082570] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.083352] page_type: f5(slab) [ 31.084355] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 31.085340] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 31.086240] page dumped because: kasan: bad access detected [ 31.086867] [ 31.087245] Memory state around the buggy address: [ 31.087913] fff00000c63c1500: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 31.088660] fff00000c63c1580: 00 00 05 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 31.090203] >fff00000c63c1600: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 31.091287] ^ [ 31.092250] fff00000c63c1680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.093309] fff00000c63c1700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.094352] ==================================================================
[ 28.881177] ================================================================== [ 28.882543] BUG: KASAN: slab-use-after-free in rcu_uaf_reclaim+0x50/0x60 [ 28.883441] Read of size 4 at addr ffff888101ab1a80 by task swapper/0/0 [ 28.884479] [ 28.884666] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 28.885538] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.886033] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.887123] Call Trace: [ 28.887380] <IRQ> [ 28.887730] dump_stack_lvl+0x73/0xb0 [ 28.888458] print_report+0xd1/0x640 [ 28.888811] ? __virt_addr_valid+0x1db/0x2d0 [ 28.889437] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.890017] kasan_report+0x102/0x140 [ 28.890383] ? rcu_uaf_reclaim+0x50/0x60 [ 28.890964] ? rcu_uaf_reclaim+0x50/0x60 [ 28.891426] __asan_report_load4_noabort+0x18/0x20 [ 28.892087] rcu_uaf_reclaim+0x50/0x60 [ 28.892497] rcu_core+0x680/0x1d70 [ 28.893357] ? __pfx_rcu_core+0x10/0x10 [ 28.893700] rcu_core_si+0x12/0x20 [ 28.894804] handle_softirqs+0x209/0x720 [ 28.895524] ? hrtimer_interrupt+0x2fe/0x780 [ 28.896091] ? __pfx_handle_softirqs+0x10/0x10 [ 28.896449] __irq_exit_rcu+0xc9/0x110 [ 28.897240] irq_exit_rcu+0x12/0x20 [ 28.897843] sysvec_apic_timer_interrupt+0x81/0x90 [ 28.898431] </IRQ> [ 28.898677] <TASK> [ 28.898945] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 28.899925] RIP: 0010:default_idle+0xf/0x20 [ 28.900522] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d d3 59 35 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 [ 28.902480] RSP: 0000:ffffffff8e807df0 EFLAGS: 00010206 [ 28.903630] RAX: ffff88815b000000 RBX: ffffffff8e81a680 RCX: ffffffff8d505165 [ 28.904379] RDX: ffffed102b606b23 RSI: 0000000000000004 RDI: 0000000000072594 [ 28.905558] RBP: ffffffff8e807df8 R08: 0000000000000001 R09: ffffed102b606b22 [ 28.906361] R10: ffff88815b035913 R11: 0000000000000000 R12: 0000000000000000 [ 28.907300] R13: fffffbfff1d034d0 R14: ffffffff8f374a90 R15: 0000000000000000 [ 28.908281] ? ct_kernel_exit.constprop.0+0xa5/0xd0 [ 28.908730] ? arch_cpu_idle+0xd/0x20 [ 28.909509] default_idle_call+0x48/0x80 [ 28.909976] do_idle+0x310/0x3c0 [ 28.910881] ? __pfx_do_idle+0x10/0x10 [ 28.911666] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.912343] ? trace_preempt_on+0x20/0xc0 [ 28.913090] ? schedule+0x86/0x310 [ 28.913527] ? preempt_count_sub+0x50/0x80 [ 28.913791] cpu_startup_entry+0x5c/0x70 [ 28.914662] rest_init+0x11a/0x140 [ 28.915093] ? acpi_subsystem_init+0x5d/0x150 [ 28.915571] start_kernel+0x320/0x400 [ 28.916458] x86_64_start_reservations+0x1c/0x30 [ 28.916973] x86_64_start_kernel+0xcf/0xe0 [ 28.917852] common_startup_64+0x12c/0x138 [ 28.918539] </TASK> [ 28.918998] [ 28.919190] Allocated by task 205: [ 28.919746] kasan_save_stack+0x3d/0x60 [ 28.920382] kasan_save_track+0x18/0x40 [ 28.920961] kasan_save_alloc_info+0x3b/0x50 [ 28.921419] __kasan_kmalloc+0xb7/0xc0 [ 28.922494] __kmalloc_cache_noprof+0x184/0x410 [ 28.922925] rcu_uaf+0xb1/0x330 [ 28.923229] kunit_try_run_case+0x1b3/0x490 [ 28.923917] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.924585] kthread+0x257/0x310 [ 28.925243] ret_from_fork+0x41/0x80 [ 28.925954] ret_from_fork_asm+0x1a/0x30 [ 28.926592] [ 28.927246] Freed by task 0: [ 28.927922] kasan_save_stack+0x3d/0x60 [ 28.928573] kasan_save_track+0x18/0x40 [ 28.929179] kasan_save_free_info+0x3f/0x60 [ 28.929945] __kasan_slab_free+0x56/0x70 [ 28.930828] kfree+0x123/0x3f0 [ 28.931391] rcu_uaf_reclaim+0x1f/0x60 [ 28.932157] rcu_core+0x680/0x1d70 [ 28.932535] rcu_core_si+0x12/0x20 [ 28.933262] handle_softirqs+0x209/0x720 [ 28.933526] __irq_exit_rcu+0xc9/0x110 [ 28.934439] irq_exit_rcu+0x12/0x20 [ 28.934893] sysvec_apic_timer_interrupt+0x81/0x90 [ 28.935317] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 28.936187] [ 28.936472] Last potentially related work creation: [ 28.937045] kasan_save_stack+0x3d/0x60 [ 28.937899] kasan_record_aux_stack+0xb2/0xc0 [ 28.938841] __call_rcu_common.constprop.0+0x72/0xaa0 [ 28.939208] call_rcu+0x12/0x20 [ 28.939912] rcu_uaf+0x169/0x330 [ 28.940759] kunit_try_run_case+0x1b3/0x490 [ 28.941297] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.941824] kthread+0x257/0x310 [ 28.942439] ret_from_fork+0x41/0x80 [ 28.942951] ret_from_fork_asm+0x1a/0x30 [ 28.943610] [ 28.944222] The buggy address belongs to the object at ffff888101ab1a80 [ 28.944222] which belongs to the cache kmalloc-32 of size 32 [ 28.945485] The buggy address is located 0 bytes inside of [ 28.945485] freed 32-byte region [ffff888101ab1a80, ffff888101ab1aa0) [ 28.946527] [ 28.947236] The buggy address belongs to the physical page: [ 28.947596] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ab1 [ 28.948645] flags: 0x200000000000000(node=0|zone=2) [ 28.949353] page_type: f5(slab) [ 28.949652] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 28.950848] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 28.951672] page dumped because: kasan: bad access detected [ 28.952299] [ 28.952512] Memory state around the buggy address: [ 28.953126] ffff888101ab1980: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 28.953890] ffff888101ab1a00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 28.954866] >ffff888101ab1a80: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 28.955457] ^ [ 28.955930] ffff888101ab1b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.957385] ffff888101ab1b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.957993] ==================================================================