Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 23.268272] ================================================================== [ 23.269322] BUG: KASAN: slab-out-of-bounds in mempool_oob_right_helper+0x2b8/0x2f8 [ 23.270131] Read of size 1 at addr fff00000c424f2bb by task kunit_try_catch/213 [ 23.270824] [ 23.271198] CPU: 0 UID: 0 PID: 213 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 23.271408] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.271489] Hardware name: linux,dummy-virt (DT) [ 23.271578] Call trace: [ 23.271642] dump_backtrace+0x9c/0x128 [ 23.271764] show_stack+0x20/0x38 [ 23.271889] dump_stack_lvl+0x8c/0xd0 [ 23.272012] print_report+0x118/0x5f0 [ 23.272125] kasan_report+0xdc/0x128 [ 23.272221] __asan_report_load1_noabort+0x20/0x30 [ 23.272332] mempool_oob_right_helper+0x2b8/0x2f8 [ 23.272440] mempool_slab_oob_right+0xc0/0x118 [ 23.272542] kunit_try_run_case+0x170/0x3f0 [ 23.272638] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.272742] kthread+0x24c/0x2d0 [ 23.272853] ret_from_fork+0x10/0x20 [ 23.273255] [ 23.281248] Allocated by task 213: [ 23.281734] kasan_save_stack+0x3c/0x68 [ 23.282290] kasan_save_track+0x20/0x40 [ 23.282742] kasan_save_alloc_info+0x40/0x58 [ 23.283273] __kasan_mempool_unpoison_object+0xbc/0x180 [ 23.283954] remove_element+0x16c/0x1f8 [ 23.284534] mempool_alloc_preallocated+0x58/0xc0 [ 23.285155] mempool_oob_right_helper+0x98/0x2f8 [ 23.285779] mempool_slab_oob_right+0xc0/0x118 [ 23.286320] kunit_try_run_case+0x170/0x3f0 [ 23.286907] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.287565] kthread+0x24c/0x2d0 [ 23.288038] ret_from_fork+0x10/0x20 [ 23.288605] [ 23.288929] The buggy address belongs to the object at fff00000c424f240 [ 23.288929] which belongs to the cache test_cache of size 123 [ 23.289768] The buggy address is located 0 bytes to the right of [ 23.289768] allocated 123-byte region [fff00000c424f240, fff00000c424f2bb) [ 23.290629] [ 23.290880] The buggy address belongs to the physical page: [ 23.291392] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10424f [ 23.292234] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 23.293140] page_type: f5(slab) [ 23.293525] raw: 0bfffe0000000000 fff00000c11cd8c0 dead000000000122 0000000000000000 [ 23.294301] raw: 0000000000000000 0000000080150015 00000001f5000000 0000000000000000 [ 23.295225] page dumped because: kasan: bad access detected [ 23.295914] [ 23.296208] Memory state around the buggy address: [ 23.296741] fff00000c424f180: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.298778] fff00000c424f200: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 23.299711] >fff00000c424f280: 00 00 00 00 00 00 00 03 fc fc fc fc fc fc fc fc [ 23.300562] ^ [ 23.301062] fff00000c424f300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.302305] fff00000c424f380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.303274] ================================================================== [ 23.226921] ================================================================== [ 23.228665] BUG: KASAN: slab-out-of-bounds in mempool_oob_right_helper+0x2b8/0x2f8 [ 23.229548] Read of size 1 at addr fff00000c6a26001 by task kunit_try_catch/211 [ 23.230216] [ 23.230599] CPU: 0 UID: 0 PID: 211 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 23.230806] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.230885] Hardware name: linux,dummy-virt (DT) [ 23.230991] Call trace: [ 23.231057] dump_backtrace+0x9c/0x128 [ 23.231179] show_stack+0x20/0x38 [ 23.231287] dump_stack_lvl+0x8c/0xd0 [ 23.231451] print_report+0x118/0x5f0 [ 23.231590] kasan_report+0xdc/0x128 [ 23.231725] __asan_report_load1_noabort+0x20/0x30 [ 23.231842] mempool_oob_right_helper+0x2b8/0x2f8 [ 23.231902] mempool_kmalloc_large_oob_right+0xc4/0x120 [ 23.231983] kunit_try_run_case+0x170/0x3f0 [ 23.232040] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.232093] kthread+0x24c/0x2d0 [ 23.232142] ret_from_fork+0x10/0x20 [ 23.232191] [ 23.239599] The buggy address belongs to the physical page: [ 23.240230] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106a24 [ 23.241337] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 23.242242] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 23.243039] raw: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 23.244635] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 23.245286] head: 0bfffe0000000040 0000000000000000 dead000000000122 0000000000000000 [ 23.245875] head: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 23.246478] head: 0bfffe0000000002 ffffc1ffc31a8901 ffffffffffffffff 0000000000000000 [ 23.247796] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 [ 23.248757] page dumped because: kasan: bad access detected [ 23.250497] [ 23.251217] Memory state around the buggy address: [ 23.253147] fff00000c6a25f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.253860] fff00000c6a25f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.254617] >fff00000c6a26000: 01 fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 23.255440] ^ [ 23.255898] fff00000c6a26080: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 23.256660] fff00000c6a26100: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 23.257700] ================================================================== [ 23.178905] ================================================================== [ 23.180074] BUG: KASAN: slab-out-of-bounds in mempool_oob_right_helper+0x2b8/0x2f8 [ 23.180815] Read of size 1 at addr fff00000c418f873 by task kunit_try_catch/209 [ 23.181518] [ 23.181743] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 23.181848] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.181883] Hardware name: linux,dummy-virt (DT) [ 23.181923] Call trace: [ 23.181949] dump_backtrace+0x9c/0x128 [ 23.182098] show_stack+0x20/0x38 [ 23.182201] dump_stack_lvl+0x8c/0xd0 [ 23.182325] print_report+0x118/0x5f0 [ 23.182434] kasan_report+0xdc/0x128 [ 23.182569] __asan_report_load1_noabort+0x20/0x30 [ 23.182700] mempool_oob_right_helper+0x2b8/0x2f8 [ 23.182823] mempool_kmalloc_oob_right+0xc4/0x120 [ 23.182945] kunit_try_run_case+0x170/0x3f0 [ 23.183091] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.183211] kthread+0x24c/0x2d0 [ 23.183328] ret_from_fork+0x10/0x20 [ 23.183446] [ 23.193935] Allocated by task 209: [ 23.194571] kasan_save_stack+0x3c/0x68 [ 23.195118] kasan_save_track+0x20/0x40 [ 23.195595] kasan_save_alloc_info+0x40/0x58 [ 23.196217] __kasan_mempool_unpoison_object+0x11c/0x180 [ 23.197436] remove_element+0x130/0x1f8 [ 23.198003] mempool_alloc_preallocated+0x58/0xc0 [ 23.198631] mempool_oob_right_helper+0x98/0x2f8 [ 23.199262] mempool_kmalloc_oob_right+0xc4/0x120 [ 23.199828] kunit_try_run_case+0x170/0x3f0 [ 23.200694] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.201382] kthread+0x24c/0x2d0 [ 23.201877] ret_from_fork+0x10/0x20 [ 23.202407] [ 23.202727] The buggy address belongs to the object at fff00000c418f800 [ 23.202727] which belongs to the cache kmalloc-128 of size 128 [ 23.204664] The buggy address is located 0 bytes to the right of [ 23.204664] allocated 115-byte region [fff00000c418f800, fff00000c418f873) [ 23.205616] [ 23.205759] The buggy address belongs to the physical page: [ 23.206142] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10418f [ 23.207644] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 23.208551] page_type: f5(slab) [ 23.209078] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 23.209758] raw: 0000000000000000 0000000080100010 00000001f5000000 0000000000000000 [ 23.210499] page dumped because: kasan: bad access detected [ 23.211141] [ 23.211485] Memory state around the buggy address: [ 23.212299] fff00000c418f700: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.213753] fff00000c418f780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.214828] >fff00000c418f800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 03 fc [ 23.215539] ^ [ 23.216291] fff00000c418f880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.217468] fff00000c418f900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 03 fc [ 23.218205] ==================================================================
[ 19.764050] ================================================================== [ 19.765299] BUG: KASAN: slab-out-of-bounds in mempool_oob_right_helper+0x31a/0x380 [ 19.766107] Read of size 1 at addr ffff888102bf6001 by task kunit_try_catch/228 [ 19.766801] [ 19.767209] CPU: 0 UID: 0 PID: 228 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 19.767367] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.767401] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.767464] Call Trace: [ 19.767711] <TASK> [ 19.767766] dump_stack_lvl+0x73/0xb0 [ 19.767881] print_report+0xd1/0x640 [ 19.767960] ? __virt_addr_valid+0x1db/0x2d0 [ 19.768039] ? mempool_oob_right_helper+0x31a/0x380 [ 19.768139] ? kasan_addr_to_slab+0x11/0xa0 [ 19.768179] ? mempool_oob_right_helper+0x31a/0x380 [ 19.768209] kasan_report+0x140/0x180 [ 19.768271] ? mempool_oob_right_helper+0x31a/0x380 [ 19.768308] __asan_report_load1_noabort+0x18/0x20 [ 19.768337] mempool_oob_right_helper+0x31a/0x380 [ 19.768366] ? __pfx_mempool_oob_right_helper+0x10/0x10 [ 19.768398] ? finish_task_switch.isra.0+0x153/0x700 [ 19.768434] mempool_kmalloc_large_oob_right+0xf3/0x150 [ 19.768495] ? __pfx_mempool_kmalloc_large_oob_right+0x10/0x10 [ 19.768580] ? __pfx_mempool_kmalloc+0x10/0x10 [ 19.768613] ? __pfx_mempool_kfree+0x10/0x10 [ 19.768642] ? __pfx_read_tsc+0x10/0x10 [ 19.768669] ? ktime_get_ts64+0x84/0x230 [ 19.768704] kunit_try_run_case+0x1a6/0x480 [ 19.768737] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.768766] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 19.768797] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.768856] ? __kthread_parkme+0x82/0x160 [ 19.768888] ? preempt_count_sub+0x50/0x80 [ 19.768919] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.768948] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.768984] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.769020] kthread+0x257/0x310 [ 19.769044] ? __pfx_kthread+0x10/0x10 [ 19.769069] ret_from_fork+0x41/0x80 [ 19.769096] ? __pfx_kthread+0x10/0x10 [ 19.769120] ret_from_fork_asm+0x1a/0x30 [ 19.769163] </TASK> [ 19.769179] [ 19.787114] The buggy address belongs to the physical page: [ 19.788812] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102bf4 [ 19.790096] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 19.791021] flags: 0x200000000000040(head|node=0|zone=2) [ 19.792124] raw: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 19.792849] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 19.794141] head: 0200000000000040 0000000000000000 dead000000000122 0000000000000000 [ 19.795585] head: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 19.796459] head: 0200000000000002 ffffea00040afd01 ffffffffffffffff 0000000000000000 [ 19.797402] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 [ 19.798415] page dumped because: kasan: bad access detected [ 19.799293] [ 19.799739] Memory state around the buggy address: [ 19.800319] ffff888102bf5f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 19.801049] ffff888102bf5f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 19.801629] >ffff888102bf6000: 01 fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 19.802434] ^ [ 19.803029] ffff888102bf6080: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 19.803751] ffff888102bf6100: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 19.804299] ================================================================== [ 19.703366] ================================================================== [ 19.704844] BUG: KASAN: slab-out-of-bounds in mempool_oob_right_helper+0x31a/0x380 [ 19.705988] Read of size 1 at addr ffff888102310f73 by task kunit_try_catch/226 [ 19.707104] [ 19.707328] CPU: 1 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 19.707393] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.707410] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.707448] Call Trace: [ 19.708199] <TASK> [ 19.708279] dump_stack_lvl+0x73/0xb0 [ 19.708392] print_report+0xd1/0x640 [ 19.708434] ? __virt_addr_valid+0x1db/0x2d0 [ 19.708504] ? mempool_oob_right_helper+0x31a/0x380 [ 19.708575] ? kasan_complete_mode_report_info+0x2a/0x200 [ 19.708613] ? mempool_oob_right_helper+0x31a/0x380 [ 19.708642] kasan_report+0x140/0x180 [ 19.708677] ? mempool_oob_right_helper+0x31a/0x380 [ 19.708713] __asan_report_load1_noabort+0x18/0x20 [ 19.708744] mempool_oob_right_helper+0x31a/0x380 [ 19.708775] ? __pfx_mempool_oob_right_helper+0x10/0x10 [ 19.708810] ? finish_task_switch.isra.0+0x153/0x700 [ 19.708884] mempool_kmalloc_oob_right+0xf3/0x150 [ 19.708918] ? __pfx_mempool_kmalloc_oob_right+0x10/0x10 [ 19.708951] ? __pfx_mempool_kmalloc+0x10/0x10 [ 19.708979] ? __pfx_mempool_kfree+0x10/0x10 [ 19.709006] ? __pfx_read_tsc+0x10/0x10 [ 19.709033] ? ktime_get_ts64+0x84/0x230 [ 19.709068] kunit_try_run_case+0x1a6/0x480 [ 19.709102] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.709129] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 19.709158] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.709196] ? __kthread_parkme+0x82/0x160 [ 19.709246] ? preempt_count_sub+0x50/0x80 [ 19.709280] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.709309] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.709346] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.709383] kthread+0x257/0x310 [ 19.709409] ? __pfx_kthread+0x10/0x10 [ 19.709435] ret_from_fork+0x41/0x80 [ 19.709735] ? __pfx_kthread+0x10/0x10 [ 19.709772] ret_from_fork_asm+0x1a/0x30 [ 19.709824] </TASK> [ 19.709871] [ 19.727209] Allocated by task 226: [ 19.727575] kasan_save_stack+0x45/0x70 [ 19.728411] kasan_save_track+0x18/0x40 [ 19.729062] kasan_save_alloc_info+0x3b/0x50 [ 19.730038] __kasan_mempool_unpoison_object+0x1a9/0x200 [ 19.730742] remove_element+0x11e/0x190 [ 19.731318] mempool_alloc_preallocated+0x4d/0x90 [ 19.732089] mempool_oob_right_helper+0x8b/0x380 [ 19.732839] mempool_kmalloc_oob_right+0xf3/0x150 [ 19.733326] kunit_try_run_case+0x1a6/0x480 [ 19.734238] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.735006] kthread+0x257/0x310 [ 19.735377] ret_from_fork+0x41/0x80 [ 19.736178] ret_from_fork_asm+0x1a/0x30 [ 19.736840] [ 19.737107] The buggy address belongs to the object at ffff888102310f00 [ 19.737107] which belongs to the cache kmalloc-128 of size 128 [ 19.738522] The buggy address is located 0 bytes to the right of [ 19.738522] allocated 115-byte region [ffff888102310f00, ffff888102310f73) [ 19.738910] [ 19.739056] The buggy address belongs to the physical page: [ 19.739403] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102310 [ 19.739823] flags: 0x200000000000000(node=0|zone=2) [ 19.740140] page_type: f5(slab) [ 19.741014] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 19.742733] raw: 0000000000000000 0000000000100010 00000001f5000000 0000000000000000 [ 19.744296] page dumped because: kasan: bad access detected [ 19.746779] [ 19.747144] Memory state around the buggy address: [ 19.748735] ffff888102310e00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.750487] ffff888102310e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.751969] >ffff888102310f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 03 fc [ 19.753417] ^ [ 19.754709] ffff888102310f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.755672] ffff888102311000: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 19.756110] ================================================================== [ 19.812916] ================================================================== [ 19.813834] BUG: KASAN: slab-out-of-bounds in mempool_oob_right_helper+0x31a/0x380 [ 19.814865] Read of size 1 at addr ffff88810231a2bb by task kunit_try_catch/230 [ 19.815612] [ 19.815857] CPU: 1 UID: 0 PID: 230 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 19.815976] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.816023] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.816082] Call Trace: [ 19.816121] <TASK> [ 19.816164] dump_stack_lvl+0x73/0xb0 [ 19.816264] print_report+0xd1/0x640 [ 19.816345] ? __virt_addr_valid+0x1db/0x2d0 [ 19.816420] ? mempool_oob_right_helper+0x31a/0x380 [ 19.816485] ? kasan_complete_mode_report_info+0x2a/0x200 [ 19.816558] ? mempool_oob_right_helper+0x31a/0x380 [ 19.816624] kasan_report+0x140/0x180 [ 19.816700] ? mempool_oob_right_helper+0x31a/0x380 [ 19.816780] __asan_report_load1_noabort+0x18/0x20 [ 19.816849] mempool_oob_right_helper+0x31a/0x380 [ 19.817037] ? __pfx_mempool_oob_right_helper+0x10/0x10 [ 19.817119] ? finish_task_switch.isra.0+0x153/0x700 [ 19.817199] mempool_slab_oob_right+0xee/0x140 [ 19.817272] ? __pfx_mempool_slab_oob_right+0x10/0x10 [ 19.817308] ? __pfx_mempool_alloc_slab+0x10/0x10 [ 19.817339] ? __pfx_mempool_free_slab+0x10/0x10 [ 19.817368] ? __pfx_read_tsc+0x10/0x10 [ 19.817394] ? ktime_get_ts64+0x84/0x230 [ 19.817429] kunit_try_run_case+0x1a6/0x480 [ 19.817561] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.817595] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 19.817625] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.817661] ? __kthread_parkme+0x82/0x160 [ 19.817688] ? preempt_count_sub+0x50/0x80 [ 19.817718] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.817745] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.817780] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.817827] kthread+0x257/0x310 [ 19.817874] ? __pfx_kthread+0x10/0x10 [ 19.817901] ret_from_fork+0x41/0x80 [ 19.817929] ? __pfx_kthread+0x10/0x10 [ 19.817954] ret_from_fork_asm+0x1a/0x30 [ 19.817995] </TASK> [ 19.818009] [ 19.837656] Allocated by task 230: [ 19.838026] kasan_save_stack+0x45/0x70 [ 19.839021] kasan_save_track+0x18/0x40 [ 19.839356] kasan_save_alloc_info+0x3b/0x50 [ 19.840314] __kasan_mempool_unpoison_object+0x1bb/0x200 [ 19.840962] remove_element+0x11e/0x190 [ 19.841301] mempool_alloc_preallocated+0x4d/0x90 [ 19.842317] mempool_oob_right_helper+0x8b/0x380 [ 19.843582] mempool_slab_oob_right+0xee/0x140 [ 19.843943] kunit_try_run_case+0x1a6/0x480 [ 19.844910] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.845615] kthread+0x257/0x310 [ 19.845869] ret_from_fork+0x41/0x80 [ 19.846317] ret_from_fork_asm+0x1a/0x30 [ 19.847281] [ 19.847866] The buggy address belongs to the object at ffff88810231a240 [ 19.847866] which belongs to the cache test_cache of size 123 [ 19.849516] The buggy address is located 0 bytes to the right of [ 19.849516] allocated 123-byte region [ffff88810231a240, ffff88810231a2bb) [ 19.851710] [ 19.851862] The buggy address belongs to the physical page: [ 19.852328] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10231a [ 19.852946] flags: 0x200000000000000(node=0|zone=2) [ 19.853993] page_type: f5(slab) [ 19.854362] raw: 0200000000000000 ffff8881010958c0 dead000000000122 0000000000000000 [ 19.855521] raw: 0000000000000000 0000000080150015 00000001f5000000 0000000000000000 [ 19.856411] page dumped because: kasan: bad access detected [ 19.856929] [ 19.857493] Memory state around the buggy address: [ 19.858265] ffff88810231a180: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.859017] ffff88810231a200: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 19.860204] >ffff88810231a280: 00 00 00 00 00 00 00 03 fc fc fc fc fc fc fc fc [ 19.860698] ^ [ 19.861267] ffff88810231a300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.862242] ffff88810231a380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.863284] ==================================================================