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Date
Nov. 27, 2024, 3:37 a.m.

Environment
qemu-arm64
qemu-x86_64 

[   50.218410] ==================================================================
[   50.219617] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340
[   50.220370] Read of size 1 at addr fff00000c66e0000 by task kunit_try_catch/218
[   50.221308] 
[   50.222233] CPU: 0 UID: 0 PID: 218 Comm: kunit_try_catch Tainted: G    B            N 6.12.0-next-20241127 #1
[   50.223423] Tainted: [B]=BAD_PAGE, [N]=TEST
[   50.223972] Hardware name: linux,dummy-virt (DT)
[   50.224771] Call trace:
[   50.225217]  show_stack+0x20/0x38 (C)
[   50.225771]  dump_stack_lvl+0x8c/0xd0
[   50.226700]  print_report+0x118/0x5e0
[   50.227399]  kasan_report+0xc8/0x118
[   50.227962]  __asan_report_load1_noabort+0x20/0x30
[   50.228825]  mempool_uaf_helper+0x314/0x340
[   50.229903]  mempool_kmalloc_large_uaf+0xbc/0x118
[   50.230577]  kunit_try_run_case+0x14c/0x3d0
[   50.231170]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   50.232003]  kthread+0x24c/0x2d0
[   50.232546]  ret_from_fork+0x10/0x20
[   50.233509] 
[   50.233795] The buggy address belongs to the physical page:
[   50.234432] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1066e0
[   50.235401] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   50.236281] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff)
[   50.237331] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   50.238211] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   50.239440] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000
[   50.240387] head: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   50.241758] head: 0bfffe0000000002 ffffc1ffc319b801 ffffffffffffffff 0000000000000000
[   50.242555] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[   50.243417] page dumped because: kasan: bad access detected
[   50.244203] 
[   50.244621] Memory state around the buggy address:
[   50.245709]  fff00000c66dff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   50.246591]  fff00000c66dff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   50.247515] >fff00000c66e0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   50.248468]                    ^
[   50.248950]  fff00000c66e0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   50.250069]  fff00000c66e0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   50.251127] ==================================================================
[   50.332202] ==================================================================
[   50.333572] BUG: KASAN: use-after-free in mempool_uaf_helper+0x314/0x340
[   50.335484] Read of size 1 at addr fff00000c66e4000 by task kunit_try_catch/222
[   50.336901] 
[   50.337682] CPU: 0 UID: 0 PID: 222 Comm: kunit_try_catch Tainted: G    B            N 6.12.0-next-20241127 #1
[   50.338870] Tainted: [B]=BAD_PAGE, [N]=TEST
[   50.339602] Hardware name: linux,dummy-virt (DT)
[   50.340252] Call trace:
[   50.340715]  show_stack+0x20/0x38 (C)
[   50.342129]  dump_stack_lvl+0x8c/0xd0
[   50.342667]  print_report+0x118/0x5e0
[   50.343168]  kasan_report+0xc8/0x118
[   50.343976]  __asan_report_load1_noabort+0x20/0x30
[   50.344598]  mempool_uaf_helper+0x314/0x340
[   50.345208]  mempool_page_alloc_uaf+0xb8/0x118
[   50.346269]  kunit_try_run_case+0x14c/0x3d0
[   50.347119]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   50.347733]  kthread+0x24c/0x2d0
[   50.348361]  ret_from_fork+0x10/0x20
[   50.349011] 
[   50.349453] The buggy address belongs to the physical page:
[   50.350888] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1066e4
[   50.352058] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   50.352956] raw: 0bfffe0000000000 0000000000000000 dead000000000122 0000000000000000
[   50.354190] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   50.355106] page dumped because: kasan: bad access detected
[   50.355856] 
[   50.356185] Memory state around the buggy address:
[   50.356834]  fff00000c66e3f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   50.358110]  fff00000c66e3f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   50.359128] >fff00000c66e4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   50.359895]                    ^
[   50.360611]  fff00000c66e4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   50.361794]  fff00000c66e4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   50.362662] ==================================================================
Metadata Full log Test run details 

[   27.661080] ==================================================================
[   27.662280] BUG: KASAN: use-after-free in mempool_uaf_helper+0x394/0x400
[   27.662607] Read of size 1 at addr ffff888102cdc000 by task kunit_try_catch/241
[   27.662884] 
[   27.663050] CPU: 0 UID: 0 PID: 241 Comm: kunit_try_catch Tainted: G    B            N 6.12.0-next-20241127 #1
[   27.664893] Tainted: [B]=BAD_PAGE, [N]=TEST
[   27.665505] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   27.666313] Call Trace:
[   27.666577]  <TASK>
[   27.666945]  dump_stack_lvl+0x73/0xb0
[   27.667538]  print_report+0xd1/0x640
[   27.668000]  ? __virt_addr_valid+0x1db/0x2d0
[   27.668590]  ? kasan_addr_to_slab+0x11/0xa0
[   27.669127]  kasan_report+0x102/0x140
[   27.669615]  ? mempool_uaf_helper+0x394/0x400
[   27.670215]  ? mempool_uaf_helper+0x394/0x400
[   27.670613]  __asan_report_load1_noabort+0x18/0x20
[   27.671362]  mempool_uaf_helper+0x394/0x400
[   27.671801]  ? __pfx_mempool_uaf_helper+0x10/0x10
[   27.672444]  ? irqentry_exit+0x2a/0x60
[   27.672956]  ? sysvec_apic_timer_interrupt+0x50/0x90
[   27.673527]  mempool_page_alloc_uaf+0xb1/0x100
[   27.674212]  ? __pfx_mempool_page_alloc_uaf+0x10/0x10
[   27.674693]  ? __pfx_mempool_alloc_pages+0x10/0x10
[   27.675230]  ? __pfx_mempool_free_pages+0x10/0x10
[   27.675715]  ? __pfx_mempool_page_alloc_uaf+0x10/0x10
[   27.676196]  kunit_try_run_case+0x1b3/0x490
[   27.676651]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.677206]  ? _raw_spin_lock_irqsave+0xa2/0x110
[   27.677665]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   27.678300]  ? __kthread_parkme+0x82/0x160
[   27.678688]  ? preempt_count_sub+0x50/0x80
[   27.679251]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.679656]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   27.680363]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.680892]  kthread+0x257/0x310
[   27.681371]  ? __pfx_kthread+0x10/0x10
[   27.681699]  ret_from_fork+0x41/0x80
[   27.682283]  ? __pfx_kthread+0x10/0x10
[   27.682626]  ret_from_fork_asm+0x1a/0x30
[   27.683257]  </TASK>
[   27.683511] 
[   27.683667] The buggy address belongs to the physical page:
[   27.684460] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102cdc
[   27.685144] flags: 0x200000000000000(node=0|zone=2)
[   27.685683] raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000
[   27.686553] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   27.687293] page dumped because: kasan: bad access detected
[   27.687846] 
[   27.688177] Memory state around the buggy address:
[   27.688590]  ffff888102cdbf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.689385]  ffff888102cdbf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.690102] >ffff888102cdc000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.690768]                    ^
[   27.691219]  ffff888102cdc080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.691925]  ffff888102cdc100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.692583] ==================================================================
[   27.461558] ==================================================================
[   27.463396] BUG: KASAN: use-after-free in mempool_uaf_helper+0x394/0x400
[   27.464973] Read of size 1 at addr ffff888102c6c000 by task kunit_try_catch/237
[   27.467528] 
[   27.468119] CPU: 1 UID: 0 PID: 237 Comm: kunit_try_catch Tainted: G    B            N 6.12.0-next-20241127 #1
[   27.469303] Tainted: [B]=BAD_PAGE, [N]=TEST
[   27.470199] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   27.471482] Call Trace:
[   27.472254]  <TASK>
[   27.472879]  dump_stack_lvl+0x73/0xb0
[   27.473863]  print_report+0xd1/0x640
[   27.474810]  ? __virt_addr_valid+0x1db/0x2d0
[   27.475783]  ? kasan_addr_to_slab+0x11/0xa0
[   27.476704]  kasan_report+0x102/0x140
[   27.477694]  ? mempool_uaf_helper+0x394/0x400
[   27.478578]  ? mempool_uaf_helper+0x394/0x400
[   27.479671]  __asan_report_load1_noabort+0x18/0x20
[   27.480659]  mempool_uaf_helper+0x394/0x400
[   27.481472]  ? __pfx_mempool_uaf_helper+0x10/0x10
[   27.482547]  ? finish_task_switch.isra.0+0x153/0x700
[   27.483665]  mempool_kmalloc_large_uaf+0xb3/0x100
[   27.484776]  ? __pfx_mempool_kmalloc_large_uaf+0x10/0x10
[   27.485659]  ? __switch_to+0x5d9/0xf60
[   27.486685]  ? __pfx_mempool_kmalloc+0x10/0x10
[   27.487622]  ? __pfx_mempool_kfree+0x10/0x10
[   27.488799]  ? __pfx_read_tsc+0x10/0x10
[   27.489853]  ? ktime_get_ts64+0x84/0x230
[   27.490896]  kunit_try_run_case+0x1b3/0x490
[   27.492145]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.493404]  ? _raw_spin_lock_irqsave+0xa2/0x110
[   27.494107]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   27.495320]  ? __kthread_parkme+0x82/0x160
[   27.496172]  ? preempt_count_sub+0x50/0x80
[   27.496973]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.498515]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   27.499681]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.500940]  kthread+0x257/0x310
[   27.501768]  ? __pfx_kthread+0x10/0x10
[   27.502849]  ret_from_fork+0x41/0x80
[   27.503743]  ? __pfx_kthread+0x10/0x10
[   27.504611]  ret_from_fork_asm+0x1a/0x30
[   27.505316]  </TASK>
[   27.505853] 
[   27.506461] The buggy address belongs to the physical page:
[   27.507089] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c6c
[   27.508397] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   27.509241] flags: 0x200000000000040(head|node=0|zone=2)
[   27.510183] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   27.511442] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   27.512552] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000
[   27.513733] head: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   27.514880] head: 0200000000000002 ffffea00040b1b01 ffffffffffffffff 0000000000000000
[   27.515890] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[   27.516961] page dumped because: kasan: bad access detected
[   27.517932] 
[   27.518642] Memory state around the buggy address:
[   27.519322]  ffff888102c6bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.520605]  ffff888102c6bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.521574] >ffff888102c6c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.522760]                    ^
[   27.523669]  ffff888102c6c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.524453]  ffff888102c6c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   27.525575] ==================================================================
Metadata Full log Test run details