Date
March 19, 2025, 10:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 34.356211] ================================================================== [ 34.356413] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 34.356568] Read of size 18446744073709551614 at addr fff00000c5d89704 by task kunit_try_catch/182 [ 34.356883] [ 34.356998] CPU: 1 UID: 0 PID: 182 Comm: kunit_try_catch Tainted: G B N 6.14.0-rc7-next-20250319 #1 PREEMPT [ 34.357335] Tainted: [B]=BAD_PAGE, [N]=TEST [ 34.357422] Hardware name: linux,dummy-virt (DT) [ 34.358016] Call trace: [ 34.358114] show_stack+0x20/0x38 (C) [ 34.358272] dump_stack_lvl+0x8c/0xd0 [ 34.358415] print_report+0x118/0x5f0 [ 34.358610] kasan_report+0xc8/0x118 [ 34.358749] kasan_check_range+0x100/0x1a8 [ 34.358910] __asan_memmove+0x3c/0x98 [ 34.359095] kmalloc_memmove_negative_size+0x154/0x2e0 [ 34.359270] kunit_try_run_case+0x14c/0x3d0 [ 34.359444] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.359670] kthread+0x318/0x618 [ 34.359813] ret_from_fork+0x10/0x20 [ 34.360034] [ 34.360117] Allocated by task 182: [ 34.360203] kasan_save_stack+0x3c/0x68 [ 34.360459] kasan_save_track+0x20/0x40 [ 34.360611] kasan_save_alloc_info+0x40/0x58 [ 34.360912] __kasan_kmalloc+0xd4/0xd8 [ 34.361267] __kmalloc_cache_noprof+0x15c/0x3c0 [ 34.361523] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 34.361665] kunit_try_run_case+0x14c/0x3d0 [ 34.362315] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.362670] kthread+0x318/0x618 [ 34.362811] ret_from_fork+0x10/0x20 [ 34.363415] [ 34.363488] The buggy address belongs to the object at fff00000c5d89700 [ 34.363488] which belongs to the cache kmalloc-64 of size 64 [ 34.364008] The buggy address is located 4 bytes inside of [ 34.364008] 64-byte region [fff00000c5d89700, fff00000c5d89740) [ 34.364541] [ 34.364940] The buggy address belongs to the physical page: [ 34.365082] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105d89 [ 34.365610] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.365781] page_type: f5(slab) [ 34.366107] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 34.366590] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 34.366745] page dumped because: kasan: bad access detected [ 34.366851] [ 34.367531] Memory state around the buggy address: [ 34.367790] fff00000c5d89600: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 34.368217] fff00000c5d89680: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 34.368569] >fff00000c5d89700: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 34.368692] ^ [ 34.368784] fff00000c5d89780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.369478] fff00000c5d89800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.369891] ==================================================================
[ 22.039978] ================================================================== [ 22.040842] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 22.042033] Read of size 18446744073709551614 at addr ffff88810305c784 by task kunit_try_catch/201 [ 22.042814] [ 22.043023] CPU: 0 UID: 0 PID: 201 Comm: kunit_try_catch Tainted: G B N 6.14.0-rc7-next-20250319 #1 PREEMPT(voluntary) [ 22.043163] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.043199] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 22.043251] Call Trace: [ 22.043280] <TASK> [ 22.043312] dump_stack_lvl+0x73/0xb0 [ 22.043385] print_report+0xd1/0x660 [ 22.043448] ? __virt_addr_valid+0x1db/0x2d0 [ 22.043548] ? kasan_complete_mode_report_info+0x2a/0x200 [ 22.043680] kasan_report+0x104/0x140 [ 22.043751] ? kmalloc_memmove_negative_size+0x171/0x330 [ 22.043828] ? kmalloc_memmove_negative_size+0x171/0x330 [ 22.043916] kasan_check_range+0x10c/0x1c0 [ 22.044970] __asan_memmove+0x27/0x70 [ 22.045056] kmalloc_memmove_negative_size+0x171/0x330 [ 22.045155] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 22.045235] ? __schedule+0xd46/0x29c0 [ 22.045294] ? __pfx_read_tsc+0x10/0x10 [ 22.045347] ? ktime_get_ts64+0x86/0x240 [ 22.045410] kunit_try_run_case+0x1b2/0x490 [ 22.045475] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.045530] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 22.045584] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 22.045640] ? __kthread_parkme+0x82/0x160 [ 22.045695] ? preempt_count_sub+0x50/0x80 [ 22.045786] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.045846] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.045906] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 22.045961] kthread+0x323/0x710 [ 22.046015] ? trace_preempt_on+0x20/0xc0 [ 22.046078] ? __pfx_kthread+0x10/0x10 [ 22.046165] ? _raw_spin_unlock_irq+0x47/0x80 [ 22.046224] ? calculate_sigpending+0x7b/0xa0 [ 22.046283] ? __pfx_kthread+0x10/0x10 [ 22.046343] ret_from_fork+0x41/0x80 [ 22.046397] ? __pfx_kthread+0x10/0x10 [ 22.046452] ret_from_fork_asm+0x1a/0x30 [ 22.046532] </TASK> [ 22.046559] [ 22.058462] Allocated by task 201: [ 22.058807] kasan_save_stack+0x3d/0x60 [ 22.059209] kasan_save_track+0x18/0x40 [ 22.059586] kasan_save_alloc_info+0x3b/0x50 [ 22.060061] __kasan_kmalloc+0xb7/0xc0 [ 22.062034] __kmalloc_cache_noprof+0x183/0x410 [ 22.062530] kmalloc_memmove_negative_size+0xac/0x330 [ 22.063896] kunit_try_run_case+0x1b2/0x490 [ 22.064397] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.064703] kthread+0x323/0x710 [ 22.064927] ret_from_fork+0x41/0x80 [ 22.065184] ret_from_fork_asm+0x1a/0x30 [ 22.065435] [ 22.065568] The buggy address belongs to the object at ffff88810305c780 [ 22.065568] which belongs to the cache kmalloc-64 of size 64 [ 22.066140] The buggy address is located 4 bytes inside of [ 22.066140] 64-byte region [ffff88810305c780, ffff88810305c7c0) [ 22.067053] [ 22.068265] The buggy address belongs to the physical page: [ 22.069590] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10305c [ 22.070388] flags: 0x200000000000000(node=0|zone=2) [ 22.070857] page_type: f5(slab) [ 22.071884] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 22.072396] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 22.072792] page dumped because: kasan: bad access detected [ 22.073102] [ 22.073285] Memory state around the buggy address: [ 22.073569] ffff88810305c680: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 22.073943] ffff88810305c700: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 22.077808] >ffff88810305c780: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 22.079543] ^ [ 22.080364] ffff88810305c800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.081618] ffff88810305c880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.082849] ==================================================================