Date
Nov. 27, 2024, 3:37 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 48.874754] ================================================================== [ 48.875819] BUG: KASAN: slab-use-after-free in workqueue_uaf+0x480/0x4a8 [ 48.876503] Read of size 8 at addr fff00000c615ddc0 by task kunit_try_catch/189 [ 48.877470] [ 48.877940] CPU: 0 UID: 0 PID: 189 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 48.879127] Tainted: [B]=BAD_PAGE, [N]=TEST [ 48.879927] Hardware name: linux,dummy-virt (DT) [ 48.881365] Call trace: [ 48.882142] show_stack+0x20/0x38 (C) [ 48.882860] dump_stack_lvl+0x8c/0xd0 [ 48.883609] print_report+0x118/0x5e0 [ 48.884209] kasan_report+0xc8/0x118 [ 48.884845] __asan_report_load8_noabort+0x20/0x30 [ 48.885919] workqueue_uaf+0x480/0x4a8 [ 48.886448] kunit_try_run_case+0x14c/0x3d0 [ 48.887084] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 48.887841] kthread+0x24c/0x2d0 [ 48.888589] ret_from_fork+0x10/0x20 [ 48.889348] [ 48.889637] Allocated by task 189: [ 48.890260] kasan_save_stack+0x3c/0x68 [ 48.891632] kasan_save_track+0x20/0x40 [ 48.892186] kasan_save_alloc_info+0x40/0x58 [ 48.893077] __kasan_kmalloc+0xd4/0xd8 [ 48.893794] __kmalloc_cache_noprof+0x15c/0x3c0 [ 48.894618] workqueue_uaf+0x13c/0x4a8 [ 48.895208] kunit_try_run_case+0x14c/0x3d0 [ 48.895865] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 48.896692] kthread+0x24c/0x2d0 [ 48.897506] ret_from_fork+0x10/0x20 [ 48.897918] [ 48.898231] Freed by task 31: [ 48.898988] kasan_save_stack+0x3c/0x68 [ 48.899681] kasan_save_track+0x20/0x40 [ 48.899972] kasan_save_free_info+0x4c/0x78 [ 48.900264] __kasan_slab_free+0x6c/0x98 [ 48.901023] kfree+0x114/0x3c8 [ 48.902099] workqueue_uaf_work+0x18/0x30 [ 48.902765] process_one_work+0x530/0xf98 [ 48.903390] worker_thread+0x614/0xf28 [ 48.904103] kthread+0x24c/0x2d0 [ 48.904711] ret_from_fork+0x10/0x20 [ 48.905355] [ 48.905983] Last potentially related work creation: [ 48.906688] kasan_save_stack+0x3c/0x68 [ 48.907142] __kasan_record_aux_stack+0xbc/0xe8 [ 48.907808] kasan_record_aux_stack_noalloc+0x14/0x20 [ 48.908687] __queue_work+0x65c/0xfd8 [ 48.909181] queue_work_on+0xbc/0xf8 [ 48.910188] workqueue_uaf+0x210/0x4a8 [ 48.910842] kunit_try_run_case+0x14c/0x3d0 [ 48.911440] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 48.912021] kthread+0x24c/0x2d0 [ 48.912622] ret_from_fork+0x10/0x20 [ 48.913210] [ 48.913990] The buggy address belongs to the object at fff00000c615ddc0 [ 48.913990] which belongs to the cache kmalloc-32 of size 32 [ 48.915284] The buggy address is located 0 bytes inside of [ 48.915284] freed 32-byte region [fff00000c615ddc0, fff00000c615dde0) [ 48.916713] [ 48.916996] The buggy address belongs to the physical page: [ 48.917554] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10615d [ 48.919024] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 48.919932] page_type: f5(slab) [ 48.920645] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 48.921721] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 48.923094] page dumped because: kasan: bad access detected [ 48.923811] [ 48.924060] Memory state around the buggy address: [ 48.924816] fff00000c615dc80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 48.926355] fff00000c615dd00: 00 00 00 fc fc fc fc fc 00 00 03 fc fc fc fc fc [ 48.927257] >fff00000c615dd80: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 48.928046] ^ [ 48.928682] fff00000c615de00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 48.929981] fff00000c615de80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 48.931006] ==================================================================
[ 26.121891] ================================================================== [ 26.122863] BUG: KASAN: slab-use-after-free in workqueue_uaf+0x4d8/0x560 [ 26.124466] Read of size 8 at addr ffff888101aa5480 by task kunit_try_catch/208 [ 26.125511] [ 26.125627] CPU: 1 UID: 0 PID: 208 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 26.126107] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.126875] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.128408] Call Trace: [ 26.128798] <TASK> [ 26.129256] dump_stack_lvl+0x73/0xb0 [ 26.129880] print_report+0xd1/0x640 [ 26.130676] ? __virt_addr_valid+0x1db/0x2d0 [ 26.131182] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.132096] kasan_report+0x102/0x140 [ 26.133030] ? workqueue_uaf+0x4d8/0x560 [ 26.133586] ? workqueue_uaf+0x4d8/0x560 [ 26.134540] __asan_report_load8_noabort+0x18/0x20 [ 26.135052] workqueue_uaf+0x4d8/0x560 [ 26.135702] ? __pfx_workqueue_uaf+0x10/0x10 [ 26.136500] ? __schedule+0xc3e/0x2790 [ 26.136805] ? __pfx_read_tsc+0x10/0x10 [ 26.137585] ? ktime_get_ts64+0x84/0x230 [ 26.138163] ? irqentry_exit+0x2a/0x60 [ 26.138539] kunit_try_run_case+0x1b3/0x490 [ 26.139011] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.139441] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 26.139958] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.140443] ? __kthread_parkme+0x82/0x160 [ 26.140793] ? preempt_count_sub+0x50/0x80 [ 26.141445] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.142112] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.142616] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.143131] kthread+0x257/0x310 [ 26.143737] ? __pfx_kthread+0x10/0x10 [ 26.144076] ret_from_fork+0x41/0x80 [ 26.144565] ? __pfx_kthread+0x10/0x10 [ 26.145012] ret_from_fork_asm+0x1a/0x30 [ 26.145485] </TASK> [ 26.145677] [ 26.145866] Allocated by task 208: [ 26.146272] kasan_save_stack+0x3d/0x60 [ 26.147035] kasan_save_track+0x18/0x40 [ 26.147411] kasan_save_alloc_info+0x3b/0x50 [ 26.147709] __kasan_kmalloc+0xb7/0xc0 [ 26.148228] __kmalloc_cache_noprof+0x184/0x410 [ 26.148884] workqueue_uaf+0x153/0x560 [ 26.149284] kunit_try_run_case+0x1b3/0x490 [ 26.149579] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.150552] kthread+0x257/0x310 [ 26.150818] ret_from_fork+0x41/0x80 [ 26.151418] ret_from_fork_asm+0x1a/0x30 [ 26.151908] [ 26.152341] Freed by task 70: [ 26.152636] kasan_save_stack+0x3d/0x60 [ 26.152911] kasan_save_track+0x18/0x40 [ 26.153507] kasan_save_free_info+0x3f/0x60 [ 26.153954] __kasan_slab_free+0x56/0x70 [ 26.154390] kfree+0x123/0x3f0 [ 26.154629] workqueue_uaf_work+0x12/0x20 [ 26.154909] process_one_work+0x5ee/0xf60 [ 26.155458] worker_thread+0x720/0x1300 [ 26.155974] kthread+0x257/0x310 [ 26.157788] ret_from_fork+0x41/0x80 [ 26.158280] ret_from_fork_asm+0x1a/0x30 [ 26.158570] [ 26.158722] Last potentially related work creation: [ 26.159340] kasan_save_stack+0x3d/0x60 [ 26.159808] __kasan_record_aux_stack+0xae/0xc0 [ 26.160387] kasan_record_aux_stack_noalloc+0xf/0x20 [ 26.161168] __queue_work+0x67e/0xf70 [ 26.161519] queue_work_on+0x74/0xa0 [ 26.161884] workqueue_uaf+0x26e/0x560 [ 26.162619] kunit_try_run_case+0x1b3/0x490 [ 26.162914] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.163874] kthread+0x257/0x310 [ 26.164407] ret_from_fork+0x41/0x80 [ 26.164713] ret_from_fork_asm+0x1a/0x30 [ 26.165020] [ 26.165179] The buggy address belongs to the object at ffff888101aa5480 [ 26.165179] which belongs to the cache kmalloc-32 of size 32 [ 26.166792] The buggy address is located 0 bytes inside of [ 26.166792] freed 32-byte region [ffff888101aa5480, ffff888101aa54a0) [ 26.168052] [ 26.168236] The buggy address belongs to the physical page: [ 26.168667] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101aa5 [ 26.169349] flags: 0x200000000000000(node=0|zone=2) [ 26.170104] page_type: f5(slab) [ 26.170428] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 26.170860] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 26.171929] page dumped because: kasan: bad access detected [ 26.172427] [ 26.172628] Memory state around the buggy address: [ 26.173358] ffff888101aa5380: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 26.173860] ffff888101aa5400: 00 00 05 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 26.174790] >ffff888101aa5480: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 26.175489] ^ [ 26.175727] ffff888101aa5500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.176145] ffff888101aa5580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.177324] ==================================================================