Date
Dec. 9, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 24.736064] ================================================================== [ 24.737018] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x168/0x308 [ 24.737864] Read of size 1 at addr fff00000c6361200 by task kunit_try_catch/180 [ 24.738754] [ 24.739087] CPU: 1 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc2-next-20241209 #1 [ 24.740033] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.740644] Hardware name: linux,dummy-virt (DT) [ 24.742008] Call trace: [ 24.742370] show_stack+0x20/0x38 (C) [ 24.743206] dump_stack_lvl+0x8c/0xd0 [ 24.743736] print_report+0x118/0x5e0 [ 24.744267] kasan_report+0xc8/0x118 [ 24.744828] __kasan_check_byte+0x54/0x70 [ 24.745373] kfree_sensitive+0x30/0xb0 [ 24.746009] kmalloc_double_kzfree+0x168/0x308 [ 24.746626] kunit_try_run_case+0x14c/0x3d0 [ 24.747503] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.748210] kthread+0x24c/0x2d0 [ 24.748747] ret_from_fork+0x10/0x20 [ 24.749265] [ 24.749627] Allocated by task 180: [ 24.750121] kasan_save_stack+0x3c/0x68 [ 24.750714] kasan_save_track+0x20/0x40 [ 24.751486] kasan_save_alloc_info+0x40/0x58 [ 24.752068] __kasan_kmalloc+0xd4/0xd8 [ 24.752641] __kmalloc_cache_noprof+0x15c/0x3c0 [ 24.753225] kmalloc_double_kzfree+0xb8/0x308 [ 24.753756] kunit_try_run_case+0x14c/0x3d0 [ 24.754395] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.755280] kthread+0x24c/0x2d0 [ 24.755756] ret_from_fork+0x10/0x20 [ 24.756301] [ 24.756625] Freed by task 180: [ 24.757068] kasan_save_stack+0x3c/0x68 [ 24.757580] kasan_save_track+0x20/0x40 [ 24.758171] kasan_save_free_info+0x4c/0x78 [ 24.758686] __kasan_slab_free+0x6c/0x98 [ 24.760018] kfree+0x114/0x3c8 [ 24.760460] kfree_sensitive+0x80/0xb0 [ 24.761043] kmalloc_double_kzfree+0x11c/0x308 [ 24.761627] kunit_try_run_case+0x14c/0x3d0 [ 24.762252] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.763103] kthread+0x24c/0x2d0 [ 24.763655] ret_from_fork+0x10/0x20 [ 24.764200] [ 24.764496] The buggy address belongs to the object at fff00000c6361200 [ 24.764496] which belongs to the cache kmalloc-16 of size 16 [ 24.765746] The buggy address is located 0 bytes inside of [ 24.765746] freed 16-byte region [fff00000c6361200, fff00000c6361210) [ 24.767151] [ 24.767503] The buggy address belongs to the physical page: [ 24.768094] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106361 [ 24.768976] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 24.769816] page_type: f5(slab) [ 24.770322] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 24.771301] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 24.772210] page dumped because: kasan: bad access detected [ 24.772946] [ 24.773307] Memory state around the buggy address: [ 24.773893] fff00000c6361100: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 24.774718] fff00000c6361180: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 24.775778] >fff00000c6361200: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.776572] ^ [ 24.777075] fff00000c6361280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.777932] fff00000c6361300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.778850] ==================================================================
[ 24.724039] ================================================================== [ 24.726052] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x19d/0x360 [ 24.727434] Read of size 1 at addr ffff888101094740 by task kunit_try_catch/199 [ 24.728107] [ 24.728851] CPU: 1 UID: 0 PID: 199 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc2-next-20241209 #1 [ 24.729858] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.730790] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.731758] Call Trace: [ 24.732098] <TASK> [ 24.732396] dump_stack_lvl+0x73/0xb0 [ 24.733743] print_report+0xd1/0x640 [ 24.734151] ? __virt_addr_valid+0x1db/0x2d0 [ 24.734823] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.735669] kasan_report+0x102/0x140 [ 24.737050] ? kmalloc_double_kzfree+0x19d/0x360 [ 24.737646] ? kmalloc_double_kzfree+0x19d/0x360 [ 24.738646] ? kmalloc_double_kzfree+0x19d/0x360 [ 24.739558] __kasan_check_byte+0x3d/0x50 [ 24.740043] kfree_sensitive+0x22/0x90 [ 24.741070] kmalloc_double_kzfree+0x19d/0x360 [ 24.741935] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 24.742530] ? __schedule+0xc70/0x27e0 [ 24.742928] ? __pfx_read_tsc+0x10/0x10 [ 24.743606] ? ktime_get_ts64+0x86/0x230 [ 24.744724] kunit_try_run_case+0x1b3/0x490 [ 24.745415] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.746354] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 24.746795] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.747545] ? __kthread_parkme+0x82/0x160 [ 24.748859] ? preempt_count_sub+0x50/0x80 [ 24.749311] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.750338] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.751096] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.752067] kthread+0x257/0x310 [ 24.753330] ? __pfx_kthread+0x10/0x10 [ 24.753724] ret_from_fork+0x41/0x80 [ 24.754562] ? __pfx_kthread+0x10/0x10 [ 24.754940] ret_from_fork_asm+0x1a/0x30 [ 24.755711] </TASK> [ 24.756159] [ 24.757011] Allocated by task 199: [ 24.757688] kasan_save_stack+0x3d/0x60 [ 24.758437] kasan_save_track+0x18/0x40 [ 24.759474] kasan_save_alloc_info+0x3b/0x50 [ 24.759862] __kasan_kmalloc+0xb7/0xc0 [ 24.760551] __kmalloc_cache_noprof+0x184/0x410 [ 24.761365] kmalloc_double_kzfree+0xaa/0x360 [ 24.761661] kunit_try_run_case+0x1b3/0x490 [ 24.761945] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.762523] kthread+0x257/0x310 [ 24.762773] ret_from_fork+0x41/0x80 [ 24.763774] ret_from_fork_asm+0x1a/0x30 [ 24.764355] [ 24.764633] Freed by task 199: [ 24.765005] kasan_save_stack+0x3d/0x60 [ 24.766093] kasan_save_track+0x18/0x40 [ 24.766715] kasan_save_free_info+0x3f/0x60 [ 24.767828] __kasan_slab_free+0x56/0x70 [ 24.769105] kfree+0x123/0x3f0 [ 24.769613] kfree_sensitive+0x67/0x90 [ 24.770674] kmalloc_double_kzfree+0x12c/0x360 [ 24.771123] kunit_try_run_case+0x1b3/0x490 [ 24.772157] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.773466] kthread+0x257/0x310 [ 24.773727] ret_from_fork+0x41/0x80 [ 24.774666] ret_from_fork_asm+0x1a/0x30 [ 24.775592] [ 24.776494] The buggy address belongs to the object at ffff888101094740 [ 24.776494] which belongs to the cache kmalloc-16 of size 16 [ 24.777767] The buggy address is located 0 bytes inside of [ 24.777767] freed 16-byte region [ffff888101094740, ffff888101094750) [ 24.778894] [ 24.779099] The buggy address belongs to the physical page: [ 24.779515] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101094 [ 24.780157] flags: 0x200000000000000(node=0|zone=2) [ 24.781336] page_type: f5(slab) [ 24.781924] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 24.783659] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 24.785245] page dumped because: kasan: bad access detected [ 24.785832] [ 24.786207] Memory state around the buggy address: [ 24.787007] ffff888101094600: fa fb fc fc fa fb fc fc fa fb fc fc 00 02 fc fc [ 24.788571] ffff888101094680: 00 02 fc fc fa fb fc fc 00 00 fc fc fa fb fc fc [ 24.788988] >ffff888101094700: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 24.791340] ^ [ 24.791586] ffff888101094780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.792689] ffff888101094800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.794028] ==================================================================