Date
Dec. 5, 2024, 2:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 30.958180] ================================================================== [ 30.959117] BUG: KASAN: slab-use-after-free in ksize_uaf+0x548/0x600 [ 30.960289] Read of size 1 at addr fff00000c653d178 by task kunit_try_catch/185 [ 30.961210] [ 30.961554] CPU: 1 UID: 0 PID: 185 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 30.962836] Tainted: [B]=BAD_PAGE, [N]=TEST [ 30.963630] Hardware name: linux,dummy-virt (DT) [ 30.964382] Call trace: [ 30.964851] show_stack+0x20/0x38 (C) [ 30.965612] dump_stack_lvl+0x8c/0xd0 [ 30.966257] print_report+0x118/0x5e0 [ 30.966894] kasan_report+0xc8/0x118 [ 30.967532] __asan_report_load1_noabort+0x20/0x30 [ 30.968277] ksize_uaf+0x548/0x600 [ 30.968895] kunit_try_run_case+0x14c/0x3d0 [ 30.969570] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.970402] kthread+0x24c/0x2d0 [ 30.970936] ret_from_fork+0x10/0x20 [ 30.971392] [ 30.971816] Allocated by task 185: [ 30.972416] kasan_save_stack+0x3c/0x68 [ 30.973144] kasan_save_track+0x20/0x40 [ 30.973776] kasan_save_alloc_info+0x40/0x58 [ 30.974496] __kasan_kmalloc+0xd4/0xd8 [ 30.975143] __kmalloc_cache_noprof+0x15c/0x3c0 [ 30.975965] ksize_uaf+0xb8/0x600 [ 30.976528] kunit_try_run_case+0x14c/0x3d0 [ 30.977327] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.978080] kthread+0x24c/0x2d0 [ 30.978638] ret_from_fork+0x10/0x20 [ 30.979273] [ 30.979604] Freed by task 185: [ 30.980255] kasan_save_stack+0x3c/0x68 [ 30.980960] kasan_save_track+0x20/0x40 [ 30.981696] kasan_save_free_info+0x4c/0x78 [ 30.982392] __kasan_slab_free+0x6c/0x98 [ 30.983079] kfree+0x114/0x3c8 [ 30.983585] ksize_uaf+0x11c/0x600 [ 30.984254] kunit_try_run_case+0x14c/0x3d0 [ 30.984934] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.985726] kthread+0x24c/0x2d0 [ 30.986280] ret_from_fork+0x10/0x20 [ 30.986934] [ 30.987376] The buggy address belongs to the object at fff00000c653d100 [ 30.987376] which belongs to the cache kmalloc-128 of size 128 [ 30.988893] The buggy address is located 120 bytes inside of [ 30.988893] freed 128-byte region [fff00000c653d100, fff00000c653d180) [ 30.990346] [ 30.990811] The buggy address belongs to the physical page: [ 30.991533] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10653d [ 30.992586] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 30.993467] page_type: f5(slab) [ 30.994032] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 30.995076] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 30.996042] page dumped because: kasan: bad access detected [ 30.996789] [ 30.997151] Memory state around the buggy address: [ 30.997892] fff00000c653d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.998902] fff00000c653d080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.999898] >fff00000c653d100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.000747] ^ [ 31.001669] fff00000c653d180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.002720] fff00000c653d200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.003665] ================================================================== [ 30.858031] ================================================================== [ 30.859346] BUG: KASAN: slab-use-after-free in ksize_uaf+0x168/0x600 [ 30.860174] Read of size 1 at addr fff00000c653d100 by task kunit_try_catch/185 [ 30.861182] [ 30.862422] CPU: 1 UID: 0 PID: 185 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 30.863935] Tainted: [B]=BAD_PAGE, [N]=TEST [ 30.864489] Hardware name: linux,dummy-virt (DT) [ 30.865049] Call trace: [ 30.865782] show_stack+0x20/0x38 (C) [ 30.866500] dump_stack_lvl+0x8c/0xd0 [ 30.867098] print_report+0x118/0x5e0 [ 30.867656] kasan_report+0xc8/0x118 [ 30.868200] __kasan_check_byte+0x54/0x70 [ 30.869441] ksize+0x30/0x88 [ 30.869899] ksize_uaf+0x168/0x600 [ 30.870503] kunit_try_run_case+0x14c/0x3d0 [ 30.871478] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.872526] kthread+0x24c/0x2d0 [ 30.872948] ret_from_fork+0x10/0x20 [ 30.873548] [ 30.874023] Allocated by task 185: [ 30.874604] kasan_save_stack+0x3c/0x68 [ 30.875120] kasan_save_track+0x20/0x40 [ 30.875843] kasan_save_alloc_info+0x40/0x58 [ 30.876856] __kasan_kmalloc+0xd4/0xd8 [ 30.877918] __kmalloc_cache_noprof+0x15c/0x3c0 [ 30.878630] ksize_uaf+0xb8/0x600 [ 30.879255] kunit_try_run_case+0x14c/0x3d0 [ 30.879924] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.880681] kthread+0x24c/0x2d0 [ 30.881369] ret_from_fork+0x10/0x20 [ 30.881987] [ 30.882463] Freed by task 185: [ 30.883123] kasan_save_stack+0x3c/0x68 [ 30.884168] kasan_save_track+0x20/0x40 [ 30.884668] kasan_save_free_info+0x4c/0x78 [ 30.885179] __kasan_slab_free+0x6c/0x98 [ 30.886109] kfree+0x114/0x3c8 [ 30.886714] ksize_uaf+0x11c/0x600 [ 30.887147] kunit_try_run_case+0x14c/0x3d0 [ 30.888085] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.889401] kthread+0x24c/0x2d0 [ 30.889862] ret_from_fork+0x10/0x20 [ 30.890483] [ 30.890840] The buggy address belongs to the object at fff00000c653d100 [ 30.890840] which belongs to the cache kmalloc-128 of size 128 [ 30.893273] The buggy address is located 0 bytes inside of [ 30.893273] freed 128-byte region [fff00000c653d100, fff00000c653d180) [ 30.894919] [ 30.895286] The buggy address belongs to the physical page: [ 30.896310] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10653d [ 30.897391] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 30.898422] page_type: f5(slab) [ 30.899108] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 30.900650] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 30.901682] page dumped because: kasan: bad access detected [ 30.902425] [ 30.902707] Memory state around the buggy address: [ 30.903350] fff00000c653d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.904281] fff00000c653d080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.905409] >fff00000c653d100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.906345] ^ [ 30.906865] fff00000c653d180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.908834] fff00000c653d200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.909640] ================================================================== [ 30.911310] ================================================================== [ 30.912411] BUG: KASAN: slab-use-after-free in ksize_uaf+0x59c/0x600 [ 30.914440] Read of size 1 at addr fff00000c653d100 by task kunit_try_catch/185 [ 30.915340] [ 30.915658] CPU: 1 UID: 0 PID: 185 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 30.917053] Tainted: [B]=BAD_PAGE, [N]=TEST [ 30.917641] Hardware name: linux,dummy-virt (DT) [ 30.918838] Call trace: [ 30.919674] show_stack+0x20/0x38 (C) [ 30.920157] dump_stack_lvl+0x8c/0xd0 [ 30.920758] print_report+0x118/0x5e0 [ 30.921441] kasan_report+0xc8/0x118 [ 30.922036] __asan_report_load1_noabort+0x20/0x30 [ 30.922685] ksize_uaf+0x59c/0x600 [ 30.923303] kunit_try_run_case+0x14c/0x3d0 [ 30.924171] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.925336] kthread+0x24c/0x2d0 [ 30.926068] ret_from_fork+0x10/0x20 [ 30.926922] [ 30.927239] Allocated by task 185: [ 30.927699] kasan_save_stack+0x3c/0x68 [ 30.928336] kasan_save_track+0x20/0x40 [ 30.928941] kasan_save_alloc_info+0x40/0x58 [ 30.929558] __kasan_kmalloc+0xd4/0xd8 [ 30.930069] __kmalloc_cache_noprof+0x15c/0x3c0 [ 30.930745] ksize_uaf+0xb8/0x600 [ 30.931286] kunit_try_run_case+0x14c/0x3d0 [ 30.932054] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.932660] kthread+0x24c/0x2d0 [ 30.933304] ret_from_fork+0x10/0x20 [ 30.933909] [ 30.934316] Freed by task 185: [ 30.934774] kasan_save_stack+0x3c/0x68 [ 30.935421] kasan_save_track+0x20/0x40 [ 30.935985] kasan_save_free_info+0x4c/0x78 [ 30.936570] __kasan_slab_free+0x6c/0x98 [ 30.937235] kfree+0x114/0x3c8 [ 30.937720] ksize_uaf+0x11c/0x600 [ 30.938319] kunit_try_run_case+0x14c/0x3d0 [ 30.938957] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.939611] kthread+0x24c/0x2d0 [ 30.940251] ret_from_fork+0x10/0x20 [ 30.940781] [ 30.941098] The buggy address belongs to the object at fff00000c653d100 [ 30.941098] which belongs to the cache kmalloc-128 of size 128 [ 30.942466] The buggy address is located 0 bytes inside of [ 30.942466] freed 128-byte region [fff00000c653d100, fff00000c653d180) [ 30.943909] [ 30.944199] The buggy address belongs to the physical page: [ 30.944839] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10653d [ 30.945850] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 30.946786] page_type: f5(slab) [ 30.947251] raw: 0bfffe0000000000 fff00000c0001a00 dead000000000122 0000000000000000 [ 30.948119] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 30.949159] page dumped because: kasan: bad access detected [ 30.949805] [ 30.950142] Memory state around the buggy address: [ 30.950746] fff00000c653d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.951628] fff00000c653d080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.952419] >fff00000c653d100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.953344] ^ [ 30.953904] fff00000c653d180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.954672] fff00000c653d200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.955606] ==================================================================
[ 28.705559] ================================================================== [ 28.706948] BUG: KASAN: slab-use-after-free in ksize_uaf+0x19e/0x6c0 [ 28.707780] Read of size 1 at addr ffff888101ab2c00 by task kunit_try_catch/203 [ 28.709129] [ 28.709780] CPU: 0 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 28.710654] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.711412] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.712503] Call Trace: [ 28.712646] <TASK> [ 28.713365] dump_stack_lvl+0x73/0xb0 [ 28.713659] print_report+0xd1/0x640 [ 28.714346] ? __virt_addr_valid+0x1db/0x2d0 [ 28.714715] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.715855] kasan_report+0x102/0x140 [ 28.716540] ? ksize_uaf+0x19e/0x6c0 [ 28.717019] ? ksize_uaf+0x19e/0x6c0 [ 28.717517] ? ksize_uaf+0x19e/0x6c0 [ 28.717905] __kasan_check_byte+0x3d/0x50 [ 28.718381] ksize+0x20/0x60 [ 28.718746] ksize_uaf+0x19e/0x6c0 [ 28.719160] ? __pfx_ksize_uaf+0x10/0x10 [ 28.720219] ? __schedule+0xc70/0x27e0 [ 28.720824] ? __pfx_read_tsc+0x10/0x10 [ 28.721362] ? ktime_get_ts64+0x86/0x230 [ 28.721965] kunit_try_run_case+0x1b3/0x490 [ 28.722647] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.723523] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.724314] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.724880] ? __kthread_parkme+0x82/0x160 [ 28.725570] ? preempt_count_sub+0x50/0x80 [ 28.726018] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.726700] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.727615] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.728591] kthread+0x257/0x310 [ 28.728870] ? __pfx_kthread+0x10/0x10 [ 28.729369] ret_from_fork+0x41/0x80 [ 28.729986] ? __pfx_kthread+0x10/0x10 [ 28.730488] ret_from_fork_asm+0x1a/0x30 [ 28.731301] </TASK> [ 28.731520] [ 28.731824] Allocated by task 203: [ 28.732955] kasan_save_stack+0x3d/0x60 [ 28.733588] kasan_save_track+0x18/0x40 [ 28.734080] kasan_save_alloc_info+0x3b/0x50 [ 28.734711] __kasan_kmalloc+0xb7/0xc0 [ 28.735221] __kmalloc_cache_noprof+0x184/0x410 [ 28.736275] ksize_uaf+0xab/0x6c0 [ 28.736836] kunit_try_run_case+0x1b3/0x490 [ 28.737321] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.738243] kthread+0x257/0x310 [ 28.738562] ret_from_fork+0x41/0x80 [ 28.738999] ret_from_fork_asm+0x1a/0x30 [ 28.739790] [ 28.740038] Freed by task 203: [ 28.740536] kasan_save_stack+0x3d/0x60 [ 28.741080] kasan_save_track+0x18/0x40 [ 28.741876] kasan_save_free_info+0x3f/0x60 [ 28.742478] __kasan_slab_free+0x56/0x70 [ 28.742993] kfree+0x123/0x3f0 [ 28.743830] ksize_uaf+0x12d/0x6c0 [ 28.744336] kunit_try_run_case+0x1b3/0x490 [ 28.744811] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.745650] kthread+0x257/0x310 [ 28.745955] ret_from_fork+0x41/0x80 [ 28.746600] ret_from_fork_asm+0x1a/0x30 [ 28.747030] [ 28.747765] The buggy address belongs to the object at ffff888101ab2c00 [ 28.747765] which belongs to the cache kmalloc-128 of size 128 [ 28.748857] The buggy address is located 0 bytes inside of [ 28.748857] freed 128-byte region [ffff888101ab2c00, ffff888101ab2c80) [ 28.750291] [ 28.750477] The buggy address belongs to the physical page: [ 28.751477] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ab2 [ 28.752397] flags: 0x200000000000000(node=0|zone=2) [ 28.753043] page_type: f5(slab) [ 28.753620] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 28.754502] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 28.755564] page dumped because: kasan: bad access detected [ 28.756489] [ 28.756778] Memory state around the buggy address: [ 28.757442] ffff888101ab2b00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.758368] ffff888101ab2b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.759471] >ffff888101ab2c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.760436] ^ [ 28.760802] ffff888101ab2c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.761817] ffff888101ab2d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.762538] ================================================================== [ 28.818458] ================================================================== [ 28.820026] BUG: KASAN: slab-use-after-free in ksize_uaf+0x5e6/0x6c0 [ 28.821424] Read of size 1 at addr ffff888101ab2c78 by task kunit_try_catch/203 [ 28.822526] [ 28.822751] CPU: 0 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 28.824455] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.825469] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.826926] Call Trace: [ 28.827362] <TASK> [ 28.827496] dump_stack_lvl+0x73/0xb0 [ 28.827711] print_report+0xd1/0x640 [ 28.828182] ? __virt_addr_valid+0x1db/0x2d0 [ 28.828662] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.829131] kasan_report+0x102/0x140 [ 28.829737] ? ksize_uaf+0x5e6/0x6c0 [ 28.830289] ? ksize_uaf+0x5e6/0x6c0 [ 28.830613] __asan_report_load1_noabort+0x18/0x20 [ 28.831248] ksize_uaf+0x5e6/0x6c0 [ 28.831675] ? __pfx_ksize_uaf+0x10/0x10 [ 28.832017] ? __schedule+0xc70/0x27e0 [ 28.832512] ? __pfx_read_tsc+0x10/0x10 [ 28.833095] ? ktime_get_ts64+0x86/0x230 [ 28.833713] kunit_try_run_case+0x1b3/0x490 [ 28.834468] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.834973] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.835513] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.836017] ? __kthread_parkme+0x82/0x160 [ 28.836463] ? preempt_count_sub+0x50/0x80 [ 28.837121] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.837745] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.838620] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.839268] kthread+0x257/0x310 [ 28.839612] ? __pfx_kthread+0x10/0x10 [ 28.840105] ret_from_fork+0x41/0x80 [ 28.840507] ? __pfx_kthread+0x10/0x10 [ 28.841197] ret_from_fork_asm+0x1a/0x30 [ 28.841544] </TASK> [ 28.841924] [ 28.842487] Allocated by task 203: [ 28.842916] kasan_save_stack+0x3d/0x60 [ 28.843353] kasan_save_track+0x18/0x40 [ 28.843805] kasan_save_alloc_info+0x3b/0x50 [ 28.844307] __kasan_kmalloc+0xb7/0xc0 [ 28.844610] __kmalloc_cache_noprof+0x184/0x410 [ 28.845414] ksize_uaf+0xab/0x6c0 [ 28.845895] kunit_try_run_case+0x1b3/0x490 [ 28.846550] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.847278] kthread+0x257/0x310 [ 28.847669] ret_from_fork+0x41/0x80 [ 28.848200] ret_from_fork_asm+0x1a/0x30 [ 28.848557] [ 28.848828] Freed by task 203: [ 28.849365] kasan_save_stack+0x3d/0x60 [ 28.849756] kasan_save_track+0x18/0x40 [ 28.850525] kasan_save_free_info+0x3f/0x60 [ 28.851157] __kasan_slab_free+0x56/0x70 [ 28.851561] kfree+0x123/0x3f0 [ 28.851930] ksize_uaf+0x12d/0x6c0 [ 28.852483] kunit_try_run_case+0x1b3/0x490 [ 28.852938] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.853535] kthread+0x257/0x310 [ 28.853971] ret_from_fork+0x41/0x80 [ 28.854333] ret_from_fork_asm+0x1a/0x30 [ 28.855103] [ 28.855286] The buggy address belongs to the object at ffff888101ab2c00 [ 28.855286] which belongs to the cache kmalloc-128 of size 128 [ 28.856586] The buggy address is located 120 bytes inside of [ 28.856586] freed 128-byte region [ffff888101ab2c00, ffff888101ab2c80) [ 28.857962] [ 28.858537] The buggy address belongs to the physical page: [ 28.858954] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ab2 [ 28.859915] flags: 0x200000000000000(node=0|zone=2) [ 28.860420] page_type: f5(slab) [ 28.860803] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 28.861755] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 28.862752] page dumped because: kasan: bad access detected [ 28.863474] [ 28.863653] Memory state around the buggy address: [ 28.864305] ffff888101ab2b00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.865127] ffff888101ab2b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.865758] >ffff888101ab2c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.866456] ^ [ 28.867014] ffff888101ab2c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.867587] ffff888101ab2d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.868586] ================================================================== [ 28.763980] ================================================================== [ 28.764751] BUG: KASAN: slab-use-after-free in ksize_uaf+0x600/0x6c0 [ 28.765514] Read of size 1 at addr ffff888101ab2c00 by task kunit_try_catch/203 [ 28.766224] [ 28.766412] CPU: 0 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241205 #1 [ 28.768169] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.769037] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.770147] Call Trace: [ 28.770476] <TASK> [ 28.770676] dump_stack_lvl+0x73/0xb0 [ 28.771024] print_report+0xd1/0x640 [ 28.771929] ? __virt_addr_valid+0x1db/0x2d0 [ 28.772937] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.773987] kasan_report+0x102/0x140 [ 28.774511] ? ksize_uaf+0x600/0x6c0 [ 28.775003] ? ksize_uaf+0x600/0x6c0 [ 28.775460] __asan_report_load1_noabort+0x18/0x20 [ 28.776306] ksize_uaf+0x600/0x6c0 [ 28.776593] ? __pfx_ksize_uaf+0x10/0x10 [ 28.777103] ? __schedule+0xc70/0x27e0 [ 28.777956] ? __pfx_read_tsc+0x10/0x10 [ 28.778357] ? ktime_get_ts64+0x86/0x230 [ 28.778964] kunit_try_run_case+0x1b3/0x490 [ 28.779539] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.780402] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.781260] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.781812] ? __kthread_parkme+0x82/0x160 [ 28.782621] ? preempt_count_sub+0x50/0x80 [ 28.783245] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.783830] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.784445] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.785305] kthread+0x257/0x310 [ 28.785750] ? __pfx_kthread+0x10/0x10 [ 28.786273] ret_from_fork+0x41/0x80 [ 28.786768] ? __pfx_kthread+0x10/0x10 [ 28.787250] ret_from_fork_asm+0x1a/0x30 [ 28.787989] </TASK> [ 28.788205] [ 28.788601] Allocated by task 203: [ 28.788882] kasan_save_stack+0x3d/0x60 [ 28.789462] kasan_save_track+0x18/0x40 [ 28.790058] kasan_save_alloc_info+0x3b/0x50 [ 28.790409] __kasan_kmalloc+0xb7/0xc0 [ 28.791148] __kmalloc_cache_noprof+0x184/0x410 [ 28.791725] ksize_uaf+0xab/0x6c0 [ 28.792537] kunit_try_run_case+0x1b3/0x490 [ 28.793028] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.793927] kthread+0x257/0x310 [ 28.794454] ret_from_fork+0x41/0x80 [ 28.794893] ret_from_fork_asm+0x1a/0x30 [ 28.795460] [ 28.795622] Freed by task 203: [ 28.795920] kasan_save_stack+0x3d/0x60 [ 28.796408] kasan_save_track+0x18/0x40 [ 28.796822] kasan_save_free_info+0x3f/0x60 [ 28.797616] __kasan_slab_free+0x56/0x70 [ 28.798278] kfree+0x123/0x3f0 [ 28.798539] ksize_uaf+0x12d/0x6c0 [ 28.799003] kunit_try_run_case+0x1b3/0x490 [ 28.799707] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.800562] kthread+0x257/0x310 [ 28.800945] ret_from_fork+0x41/0x80 [ 28.801222] ret_from_fork_asm+0x1a/0x30 [ 28.802018] [ 28.802626] The buggy address belongs to the object at ffff888101ab2c00 [ 28.802626] which belongs to the cache kmalloc-128 of size 128 [ 28.803853] The buggy address is located 0 bytes inside of [ 28.803853] freed 128-byte region [ffff888101ab2c00, ffff888101ab2c80) [ 28.804978] [ 28.805418] The buggy address belongs to the physical page: [ 28.805915] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ab2 [ 28.806650] flags: 0x200000000000000(node=0|zone=2) [ 28.807575] page_type: f5(slab) [ 28.807993] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 28.808645] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 28.809529] page dumped because: kasan: bad access detected [ 28.810200] [ 28.810533] Memory state around the buggy address: [ 28.811323] ffff888101ab2b00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.812357] ffff888101ab2b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.812977] >ffff888101ab2c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.814076] ^ [ 28.814760] ffff888101ab2c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.815838] ffff888101ab2d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.816965] ==================================================================