Date
Nov. 27, 2024, 3:37 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 48.369793] ================================================================== [ 48.371561] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x168/0x308 [ 48.372351] Read of size 1 at addr fff00000c5f55300 by task kunit_try_catch/181 [ 48.373020] [ 48.373768] CPU: 0 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 48.375246] Tainted: [B]=BAD_PAGE, [N]=TEST [ 48.375799] Hardware name: linux,dummy-virt (DT) [ 48.376400] Call trace: [ 48.376767] show_stack+0x20/0x38 (C) [ 48.377627] dump_stack_lvl+0x8c/0xd0 [ 48.378179] print_report+0x118/0x5e0 [ 48.378836] kasan_report+0xc8/0x118 [ 48.379948] __kasan_check_byte+0x54/0x70 [ 48.380782] kfree_sensitive+0x30/0xb0 [ 48.381830] kmalloc_double_kzfree+0x168/0x308 [ 48.382508] kunit_try_run_case+0x14c/0x3d0 [ 48.383257] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 48.384188] kthread+0x24c/0x2d0 [ 48.384793] ret_from_fork+0x10/0x20 [ 48.385494] [ 48.386491] Allocated by task 181: [ 48.387003] kasan_save_stack+0x3c/0x68 [ 48.387700] kasan_save_track+0x20/0x40 [ 48.388380] kasan_save_alloc_info+0x40/0x58 [ 48.389160] __kasan_kmalloc+0xd4/0xd8 [ 48.389915] __kmalloc_cache_noprof+0x15c/0x3c0 [ 48.390606] kmalloc_double_kzfree+0xb8/0x308 [ 48.391258] kunit_try_run_case+0x14c/0x3d0 [ 48.391917] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 48.392724] kthread+0x24c/0x2d0 [ 48.393427] ret_from_fork+0x10/0x20 [ 48.394664] [ 48.395019] Freed by task 181: [ 48.395645] kasan_save_stack+0x3c/0x68 [ 48.396259] kasan_save_track+0x20/0x40 [ 48.397012] kasan_save_free_info+0x4c/0x78 [ 48.398009] __kasan_slab_free+0x6c/0x98 [ 48.398601] kfree+0x114/0x3c8 [ 48.399113] kfree_sensitive+0x80/0xb0 [ 48.399999] kmalloc_double_kzfree+0x11c/0x308 [ 48.400881] kunit_try_run_case+0x14c/0x3d0 [ 48.401726] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 48.402258] kthread+0x24c/0x2d0 [ 48.402885] ret_from_fork+0x10/0x20 [ 48.403635] [ 48.404154] The buggy address belongs to the object at fff00000c5f55300 [ 48.404154] which belongs to the cache kmalloc-16 of size 16 [ 48.405690] The buggy address is located 0 bytes inside of [ 48.405690] freed 16-byte region [fff00000c5f55300, fff00000c5f55310) [ 48.407216] [ 48.407636] The buggy address belongs to the physical page: [ 48.408421] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105f55 [ 48.409820] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 48.410667] page_type: f5(slab) [ 48.411391] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 48.412267] raw: 0000000000000000 0000000080800080 00000001f5000000 0000000000000000 [ 48.413638] page dumped because: kasan: bad access detected [ 48.414506] [ 48.414985] Memory state around the buggy address: [ 48.415812] fff00000c5f55200: 00 05 fc fc fa fb fc fc 00 02 fc fc fa fb fc fc [ 48.416668] fff00000c5f55280: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 48.417597] >fff00000c5f55300: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 48.418511] ^ [ 48.419221] fff00000c5f55380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 48.420039] fff00000c5f55400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 48.421492] ==================================================================
[ 25.599443] ================================================================== [ 25.601143] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x19d/0x360 [ 25.602505] Read of size 1 at addr ffff888102699d60 by task kunit_try_catch/200 [ 25.603441] [ 25.603657] CPU: 0 UID: 0 PID: 200 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241127 #1 [ 25.605747] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.606045] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.607548] Call Trace: [ 25.608134] <TASK> [ 25.608416] dump_stack_lvl+0x73/0xb0 [ 25.609408] print_report+0xd1/0x640 [ 25.609670] ? __virt_addr_valid+0x1db/0x2d0 [ 25.610225] ? kasan_complete_mode_report_info+0x64/0x200 [ 25.610742] kasan_report+0x102/0x140 [ 25.611428] ? kmalloc_double_kzfree+0x19d/0x360 [ 25.612227] ? kmalloc_double_kzfree+0x19d/0x360 [ 25.613233] ? kmalloc_double_kzfree+0x19d/0x360 [ 25.613752] __kasan_check_byte+0x3d/0x50 [ 25.614371] kfree_sensitive+0x22/0x90 [ 25.614842] kmalloc_double_kzfree+0x19d/0x360 [ 25.615510] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 25.615861] ? __schedule+0xc3e/0x2790 [ 25.616553] ? __pfx_read_tsc+0x10/0x10 [ 25.616977] ? ktime_get_ts64+0x84/0x230 [ 25.617756] kunit_try_run_case+0x1b3/0x490 [ 25.618466] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.619162] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 25.619738] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.620467] ? __kthread_parkme+0x82/0x160 [ 25.621342] ? preempt_count_sub+0x50/0x80 [ 25.621753] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.622412] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.622957] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.623604] kthread+0x257/0x310 [ 25.624223] ? __pfx_kthread+0x10/0x10 [ 25.624583] ret_from_fork+0x41/0x80 [ 25.625043] ? __pfx_kthread+0x10/0x10 [ 25.625430] ret_from_fork_asm+0x1a/0x30 [ 25.625821] </TASK> [ 25.626442] [ 25.626626] Allocated by task 200: [ 25.627229] kasan_save_stack+0x3d/0x60 [ 25.627611] kasan_save_track+0x18/0x40 [ 25.628321] kasan_save_alloc_info+0x3b/0x50 [ 25.628640] __kasan_kmalloc+0xb7/0xc0 [ 25.629186] __kmalloc_cache_noprof+0x184/0x410 [ 25.629768] kmalloc_double_kzfree+0xaa/0x360 [ 25.630721] kunit_try_run_case+0x1b3/0x490 [ 25.631385] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.632153] kthread+0x257/0x310 [ 25.632516] ret_from_fork+0x41/0x80 [ 25.632932] ret_from_fork_asm+0x1a/0x30 [ 25.633350] [ 25.633735] Freed by task 200: [ 25.634439] kasan_save_stack+0x3d/0x60 [ 25.634776] kasan_save_track+0x18/0x40 [ 25.635481] kasan_save_free_info+0x3f/0x60 [ 25.635877] __kasan_slab_free+0x56/0x70 [ 25.636543] kfree+0x123/0x3f0 [ 25.637050] kfree_sensitive+0x67/0x90 [ 25.637463] kmalloc_double_kzfree+0x12c/0x360 [ 25.637872] kunit_try_run_case+0x1b3/0x490 [ 25.638723] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.639422] kthread+0x257/0x310 [ 25.639683] ret_from_fork+0x41/0x80 [ 25.640186] ret_from_fork_asm+0x1a/0x30 [ 25.640542] [ 25.640801] The buggy address belongs to the object at ffff888102699d60 [ 25.640801] which belongs to the cache kmalloc-16 of size 16 [ 25.641707] The buggy address is located 0 bytes inside of [ 25.641707] freed 16-byte region [ffff888102699d60, ffff888102699d70) [ 25.643266] [ 25.643446] The buggy address belongs to the physical page: [ 25.644403] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102699 [ 25.644851] flags: 0x200000000000000(node=0|zone=2) [ 25.645576] page_type: f5(slab) [ 25.646363] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 25.647214] raw: 0000000000000000 0000000080800080 00000001f5000000 0000000000000000 [ 25.647778] page dumped because: kasan: bad access detected [ 25.648548] [ 25.648699] Memory state around the buggy address: [ 25.649496] ffff888102699c00: 00 02 fc fc 00 02 fc fc 00 02 fc fc fa fb fc fc [ 25.650365] ffff888102699c80: fa fb fc fc fa fb fc fc 00 05 fc fc 00 04 fc fc [ 25.651236] >ffff888102699d00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 25.651853] ^ [ 25.652587] ffff888102699d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.653639] ffff888102699e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.654567] ==================================================================