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🐞 Open [711] 🐞 Fixed [181] 🐞 Invalid [624] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
linux-4.19 | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | C | error | 14 | 113d | 825d | 0/1 | upstream: reported C repro on 2020/11/05 19:13 | |
android-54 | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | C | 6 | 667d | 728d | 0/2 | upstream: reported C repro on 2021/02/10 13:44 |
RBP: 00007ffc2483e9b0 R08: 0000000000000001 R09: 00007fae72050031 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 kvm: failed to shrink bus, removing it completely ================================================================== BUG: KASAN: use-after-free in kvm_vm_ioctl_unregister_coalesced_mmio+0x217/0x280 arch/x86/kvm/../../../virt/kvm/coalesced_mmio.c:178 Read of size 8 at addr ffff8880a9277200 by task syz-executor179/7971 CPU: 0 PID: 7971 Comm: syz-executor179 Not tainted 4.14.295-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351 kasan_report mm/kasan/report.c:409 [inline] __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430 kvm_vm_ioctl_unregister_coalesced_mmio+0x217/0x280 arch/x86/kvm/../../../virt/kvm/coalesced_mmio.c:178 kvm_vm_ioctl+0x77d/0x1420 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3132 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fae72096759 RSP: 002b:00007ffc2483e9a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fae72096759 RDX: 00000000200000c0 RSI: 000000004010ae68 RDI: 0000000000000004 RBP: 00007ffc2483e9b0 R08: 0000000000000001 R09: 00007fae72050031 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 7971: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 kmem_cache_alloc_trace+0x131/0x3d0 mm/slab.c:3618 kmalloc include/linux/slab.h:488 [inline] kzalloc include/linux/slab.h:661 [inline] kvm_vm_ioctl_register_coalesced_mmio+0x51/0x330 arch/x86/kvm/../../../virt/kvm/coalesced_mmio.c:146 kvm_vm_ioctl+0x795/0x1420 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3123 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb Freed by task 7971: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3496 [inline] kfree+0xc9/0x250 mm/slab.c:3815 kvm_iodevice_destructor include/kvm/iodev.h:73 [inline] kvm_io_bus_unregister_dev.cold+0xd8/0xf8 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3755 kvm_vm_ioctl_unregister_coalesced_mmio+0x17d/0x280 arch/x86/kvm/../../../virt/kvm/coalesced_mmio.c:180 kvm_vm_ioctl+0x77d/0x1420 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3132 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb The buggy address belongs to the object at ffff8880a9277200 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 0 bytes inside of 64-byte region [ffff8880a9277200, ffff8880a9277240) The buggy address belongs to the page: page:ffffea0002a49dc0 count:1 mapcount:0 mapping:ffff8880a9277000 index:0xffff8880a9277380 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffff8880a9277000 ffff8880a9277380 000000010000001f raw: ffffea0002a5a420 ffffea0002a30120 ffff88813fe74340 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880a9277100: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff8880a9277180: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff8880a9277200: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ^ ffff8880a9277280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8880a9277300: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================
Manager | Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
ci2-linux-4-14 | 2022/10/18 21:07 | linux-4.14.y | 9d5c0b3a8e1a | b31320fc | .config | console log | report | syz | C | [disk image] [vmlinux] | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |
ci2-linux-4-14 | 2022/06/30 20:46 | linux-4.14.y | f051383ef03b | 1434eec0 | .config | console log | report | syz | C | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | ||
ci2-linux-4-14 | 2020/10/24 16:57 | linux-4.14.y | 5b7a52cd2eef | a1839e81 | .config | console log | report | syz | C | |||
ci2-linux-4-14 | 2023/01/14 08:28 | linux-4.14.y | c4215ee4771b | 529798b0 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | ||
ci2-linux-4-14 | 2022/10/18 17:07 | linux-4.14.y | 9d5c0b3a8e1a | b31320fc | .config | console log | report | info | [disk image] [vmlinux] | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | ||
ci2-linux-4-14 | 2022/03/23 22:41 | linux-4.14.y | 004bfaafc45c | 5ff41e94 | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2022/01/24 11:27 | linux-4.14.y | 4ba8e26127c3 | 214351e1 | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2022/01/14 23:48 | linux-4.14.y | 4ba8e26127c3 | 53e00b45 | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2021/05/18 17:07 | linux-4.14.y | 7d7d1c0ab3eb | a343ba6b | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2021/05/16 11:19 | linux-4.14.y | 7d7d1c0ab3eb | f54a5c09 | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2021/05/13 09:43 | linux-4.14.y | 7d7d1c0ab3eb | ed7d41c5 | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2021/04/23 09:03 | linux-4.14.y | cf256fbcbe34 | 590921a5 | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2021/04/17 21:15 | linux-4.14.y | cf256fbcbe34 | 7e2b734b | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2021/03/31 16:38 | linux-4.14.y | bd634aa64163 | 6a81331a | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2021/03/04 15:20 | linux-4.14.y | 397a88b2cc86 | d7e4e604 | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2021/02/26 21:10 | linux-4.14.y | 3242aa3a635c | 4c37c133 | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2021/02/05 01:45 | linux-4.14.y | 2c8a3fceddf0 | 23a562df | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2021/01/25 10:43 | linux-4.14.y | 2d2791fce891 | 52e37319 | .config | console log | report | info | KASAN: use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio | |||
ci2-linux-4-14 | 2020/12/26 04:31 | linux-4.14.y | 3f2ecb86cb90 | 821e0b09 | .config | console log | report | info | ||||
ci2-linux-4-14 | 2020/11/05 19:12 | linux-4.14.y | 6b6446efedb2 | cba33199 | .config | console log | report | info | ||||
ci2-linux-4-14 | 2020/10/24 16:43 | linux-4.14.y | 5b7a52cd2eef | a1839e81 | .config | console log | report | info |