Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.510218] ================================================================== [ 21.511427] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x15c/0x2f8 [ 21.512370] Read of size 18446744073709551614 at addr fff00000c413b704 by task kunit_try_catch/168 [ 21.513157] [ 21.513476] CPU: 1 UID: 0 PID: 168 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 21.513610] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.513644] Hardware name: linux,dummy-virt (DT) [ 21.513696] Call trace: [ 21.514053] dump_backtrace+0x9c/0x128 [ 21.514226] show_stack+0x20/0x38 [ 21.514387] dump_stack_lvl+0x8c/0xd0 [ 21.514492] print_report+0x118/0x5f0 [ 21.514542] kasan_report+0xdc/0x128 [ 21.514584] kasan_check_range+0x100/0x1a8 [ 21.514629] __asan_memmove+0x3c/0x98 [ 21.514672] kmalloc_memmove_negative_size+0x15c/0x2f8 [ 21.514723] kunit_try_run_case+0x170/0x3f0 [ 21.514767] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.514818] kthread+0x24c/0x2d0 [ 21.514860] ret_from_fork+0x10/0x20 [ 21.514907] [ 21.523222] Allocated by task 168: [ 21.523685] kasan_save_stack+0x3c/0x68 [ 21.524402] kasan_save_track+0x20/0x40 [ 21.524980] kasan_save_alloc_info+0x40/0x58 [ 21.525459] __kasan_kmalloc+0xd4/0xd8 [ 21.526045] __kmalloc_cache_noprof+0x154/0x320 [ 21.526606] kmalloc_memmove_negative_size+0xb8/0x2f8 [ 21.527359] kunit_try_run_case+0x170/0x3f0 [ 21.527856] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.528562] kthread+0x24c/0x2d0 [ 21.529067] ret_from_fork+0x10/0x20 [ 21.529545] [ 21.529848] The buggy address belongs to the object at fff00000c413b700 [ 21.529848] which belongs to the cache kmalloc-64 of size 64 [ 21.531174] The buggy address is located 4 bytes inside of [ 21.531174] 64-byte region [fff00000c413b700, fff00000c413b740) [ 21.533285] [ 21.533744] The buggy address belongs to the physical page: [ 21.534496] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10413b [ 21.535453] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.536210] page_type: f5(slab) [ 21.536629] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 21.537709] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 21.538314] page dumped because: kasan: bad access detected [ 21.538571] [ 21.538697] Memory state around the buggy address: [ 21.538930] fff00000c413b600: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.539580] fff00000c413b680: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.541159] >fff00000c413b700: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 21.541897] ^ [ 21.542532] fff00000c413b780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.543360] fff00000c413b800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.544242] ==================================================================
[ 17.866916] ================================================================== [ 17.868121] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x172/0x330 [ 17.869515] Read of size 18446744073709551614 at addr ffff88810230b604 by task kunit_try_catch/185 [ 17.870940] [ 17.871173] CPU: 1 UID: 0 PID: 185 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 17.871540] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.871577] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 17.871637] Call Trace: [ 17.871751] <TASK> [ 17.871802] dump_stack_lvl+0x73/0xb0 [ 17.871891] print_report+0xd1/0x640 [ 17.871928] ? __virt_addr_valid+0x1db/0x2d0 [ 17.871962] ? kmalloc_memmove_negative_size+0x172/0x330 [ 17.871993] ? kasan_complete_mode_report_info+0x2a/0x200 [ 17.872025] ? kmalloc_memmove_negative_size+0x172/0x330 [ 17.872080] kasan_report+0x140/0x180 [ 17.872118] ? kmalloc_memmove_negative_size+0x172/0x330 [ 17.872155] kasan_check_range+0x10c/0x1c0 [ 17.872183] __asan_memmove+0x27/0x70 [ 17.872232] kmalloc_memmove_negative_size+0x172/0x330 [ 17.872272] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 17.872304] ? __schedule+0xc49/0x27a0 [ 17.872335] ? __pfx_read_tsc+0x10/0x10 [ 17.872363] ? ktime_get_ts64+0x84/0x230 [ 17.872399] kunit_try_run_case+0x1a6/0x480 [ 17.872432] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.872485] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 17.872558] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 17.872604] ? __kthread_parkme+0x82/0x160 [ 17.872633] ? preempt_count_sub+0x50/0x80 [ 17.872664] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.872691] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 17.872726] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.872763] kthread+0x257/0x310 [ 17.872788] ? __pfx_kthread+0x10/0x10 [ 17.872828] ret_from_fork+0x41/0x80 [ 17.872885] ? __pfx_kthread+0x10/0x10 [ 17.872912] ret_from_fork_asm+0x1a/0x30 [ 17.872953] </TASK> [ 17.872967] [ 17.893140] Allocated by task 185: [ 17.893638] kasan_save_stack+0x45/0x70 [ 17.894140] kasan_save_track+0x18/0x40 [ 17.894542] kasan_save_alloc_info+0x3b/0x50 [ 17.895131] __kasan_kmalloc+0xb7/0xc0 [ 17.895589] __kmalloc_cache_noprof+0x168/0x350 [ 17.896016] kmalloc_memmove_negative_size+0xad/0x330 [ 17.896803] kunit_try_run_case+0x1a6/0x480 [ 17.897453] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.898554] kthread+0x257/0x310 [ 17.898988] ret_from_fork+0x41/0x80 [ 17.899538] ret_from_fork_asm+0x1a/0x30 [ 17.899816] [ 17.899974] The buggy address belongs to the object at ffff88810230b600 [ 17.899974] which belongs to the cache kmalloc-64 of size 64 [ 17.901781] The buggy address is located 4 bytes inside of [ 17.901781] 64-byte region [ffff88810230b600, ffff88810230b640) [ 17.902405] [ 17.902594] The buggy address belongs to the physical page: [ 17.903757] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10230b [ 17.906862] flags: 0x200000000000000(node=0|zone=2) [ 17.907791] page_type: f5(slab) [ 17.908738] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 17.909179] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 17.910361] page dumped because: kasan: bad access detected [ 17.910858] [ 17.911724] Memory state around the buggy address: [ 17.912660] ffff88810230b500: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 17.913268] ffff88810230b580: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 17.914157] >ffff88810230b600: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 17.915970] ^ [ 17.916697] ffff88810230b680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.917545] ffff88810230b700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.918039] ==================================================================