Date
Nov. 28, 2024, 2:36 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.515448] ================================================================== [ 33.516470] BUG: KASAN: slab-use-after-free in strchr+0xcc/0xd8 [ 33.517497] Read of size 1 at addr fff00000c4081c10 by task kunit_try_catch/247 [ 33.518860] [ 33.519204] CPU: 1 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241128 #1 [ 33.520662] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.521318] Hardware name: linux,dummy-virt (DT) [ 33.521598] Call trace: [ 33.521783] show_stack+0x20/0x38 (C) [ 33.522052] dump_stack_lvl+0x8c/0xd0 [ 33.522341] print_report+0x118/0x5e0 [ 33.522602] kasan_report+0xc8/0x118 [ 33.522857] __asan_report_load1_noabort+0x20/0x30 [ 33.523234] strchr+0xcc/0xd8 [ 33.524919] kasan_strings+0x180/0x8f8 [ 33.526164] kunit_try_run_case+0x14c/0x3d0 [ 33.526825] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.527603] kthread+0x24c/0x2d0 [ 33.527876] ret_from_fork+0x10/0x20 [ 33.528180] [ 33.528608] Allocated by task 247: [ 33.529450] kasan_save_stack+0x3c/0x68 [ 33.530418] kasan_save_track+0x20/0x40 [ 33.531138] kasan_save_alloc_info+0x40/0x58 [ 33.531868] __kasan_kmalloc+0xd4/0xd8 [ 33.532578] __kmalloc_cache_noprof+0x15c/0x3c0 [ 33.533483] kasan_strings+0xb4/0x8f8 [ 33.534057] kunit_try_run_case+0x14c/0x3d0 [ 33.534601] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.535565] kthread+0x24c/0x2d0 [ 33.536183] ret_from_fork+0x10/0x20 [ 33.536727] [ 33.537090] Freed by task 247: [ 33.537588] kasan_save_stack+0x3c/0x68 [ 33.538759] kasan_save_track+0x20/0x40 [ 33.539263] kasan_save_free_info+0x4c/0x78 [ 33.539784] __kasan_slab_free+0x6c/0x98 [ 33.540926] kfree+0x114/0x3c8 [ 33.541621] kasan_strings+0x128/0x8f8 [ 33.542316] kunit_try_run_case+0x14c/0x3d0 [ 33.542943] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.543659] kthread+0x24c/0x2d0 [ 33.544191] ret_from_fork+0x10/0x20 [ 33.544783] [ 33.545260] The buggy address belongs to the object at fff00000c4081c00 [ 33.545260] which belongs to the cache kmalloc-32 of size 32 [ 33.546373] The buggy address is located 16 bytes inside of [ 33.546373] freed 32-byte region [fff00000c4081c00, fff00000c4081c20) [ 33.547490] [ 33.547879] The buggy address belongs to the physical page: [ 33.548620] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104081 [ 33.549717] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.550626] page_type: f5(slab) [ 33.551163] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.552068] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 33.552928] page dumped because: kasan: bad access detected [ 33.553746] [ 33.554049] Memory state around the buggy address: [ 33.554682] fff00000c4081b00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.555540] fff00000c4081b80: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 33.556419] >fff00000c4081c00: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 33.557258] ^ [ 33.558751] fff00000c4081c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.559669] fff00000c4081d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.560613] ==================================================================
[ 24.459677] ================================================================== [ 24.461066] BUG: KASAN: slab-use-after-free in strchr+0x9c/0xc0 [ 24.461969] Read of size 1 at addr ffff888102a34190 by task kunit_try_catch/267 [ 24.463084] [ 24.463474] CPU: 0 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241128 #1 [ 24.464598] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.465325] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.466207] Call Trace: [ 24.466473] <TASK> [ 24.467216] dump_stack_lvl+0x73/0xb0 [ 24.467735] print_report+0xd1/0x640 [ 24.468189] ? __virt_addr_valid+0x1db/0x2d0 [ 24.468717] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.469766] kasan_report+0x102/0x140 [ 24.470190] ? strchr+0x9c/0xc0 [ 24.470714] ? strchr+0x9c/0xc0 [ 24.471180] __asan_report_load1_noabort+0x18/0x20 [ 24.471700] strchr+0x9c/0xc0 [ 24.472032] kasan_strings+0x1b1/0xb60 [ 24.473064] ? __pfx_kasan_strings+0x10/0x10 [ 24.473764] ? __schedule+0xc3e/0x2790 [ 24.474242] ? __pfx_read_tsc+0x10/0x10 [ 24.474622] ? ktime_get_ts64+0x84/0x230 [ 24.475102] kunit_try_run_case+0x1b3/0x490 [ 24.475640] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.476368] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 24.477058] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.477839] ? __kthread_parkme+0x82/0x160 [ 24.478222] ? preempt_count_sub+0x50/0x80 [ 24.478840] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.479309] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.479926] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.480418] kthread+0x257/0x310 [ 24.480783] ? __pfx_kthread+0x10/0x10 [ 24.481242] ret_from_fork+0x41/0x80 [ 24.481633] ? __pfx_kthread+0x10/0x10 [ 24.482107] ret_from_fork_asm+0x1a/0x30 [ 24.482640] </TASK> [ 24.482896] [ 24.483049] Allocated by task 267: [ 24.483524] kasan_save_stack+0x3d/0x60 [ 24.483871] kasan_save_track+0x18/0x40 [ 24.484411] kasan_save_alloc_info+0x3b/0x50 [ 24.484838] __kasan_kmalloc+0xb7/0xc0 [ 24.485275] __kmalloc_cache_noprof+0x184/0x410 [ 24.485771] kasan_strings+0xb3/0xb60 [ 24.486629] kunit_try_run_case+0x1b3/0x490 [ 24.486959] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.487570] kthread+0x257/0x310 [ 24.487975] ret_from_fork+0x41/0x80 [ 24.488469] ret_from_fork_asm+0x1a/0x30 [ 24.488769] [ 24.488920] Freed by task 267: [ 24.489372] kasan_save_stack+0x3d/0x60 [ 24.489859] kasan_save_track+0x18/0x40 [ 24.490387] kasan_save_free_info+0x3f/0x60 [ 24.490697] __kasan_slab_free+0x56/0x70 [ 24.491034] kfree+0x123/0x3f0 [ 24.491475] kasan_strings+0x13a/0xb60 [ 24.491894] kunit_try_run_case+0x1b3/0x490 [ 24.492266] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.492872] kthread+0x257/0x310 [ 24.493376] ret_from_fork+0x41/0x80 [ 24.493682] ret_from_fork_asm+0x1a/0x30 [ 24.494135] [ 24.494388] The buggy address belongs to the object at ffff888102a34180 [ 24.494388] which belongs to the cache kmalloc-32 of size 32 [ 24.495426] The buggy address is located 16 bytes inside of [ 24.495426] freed 32-byte region [ffff888102a34180, ffff888102a341a0) [ 24.496383] [ 24.496573] The buggy address belongs to the physical page: [ 24.496960] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a34 [ 24.497707] flags: 0x200000000000000(node=0|zone=2) [ 24.498111] page_type: f5(slab) [ 24.498503] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 24.499140] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 24.499834] page dumped because: kasan: bad access detected [ 24.500266] [ 24.500490] Memory state around the buggy address: [ 24.501019] ffff888102a34080: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 24.501722] ffff888102a34100: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 24.502179] >ffff888102a34180: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 24.502973] ^ [ 24.503521] ffff888102a34200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.504122] ffff888102a34280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.504724] ==================================================================