| 2dca2cb | Alexander Potapenko | 28 August 2018, 14:33:29 UTC | kmsan: fix build warnings with CONFIG_KMSAN=n | 28 August 2018, 14:33:29 UTC |
| f66a112 | Alexander Potapenko | 28 August 2018, 14:25:08 UTC | kmsan: mention CONFIG_DRM_AMD_DC in README.md | 28 August 2018, 14:25:08 UTC |
| 206ace4 | Alexander Potapenko | 28 August 2018, 11:56:43 UTC | net-UPSTREAM: bpf: fix build error with clang Building the newly introduced BPF_PROG_TYPE_SK_REUSEPORT leads to a compile time error when building with clang: net/core/filter.o: In function `sk_reuseport_convert_ctx_access': ../net/core/filter.c:7284: undefined reference to `__compiletime_assert_7284' It seems that clang has issues resolving hweight_long at compile time. Since SK_FL_PROTO_MASK is a constant, we can use the interface for known constant arguments which works fine with clang. Fixes: 2dbb9b9e6df6 ("bpf: Introduce BPF_PROG_TYPE_SK_REUSEPORT") Signed-off-by: Stefan Agner <stefan@agner.ch> | 28 August 2018, 11:56:43 UTC |
| 2cb969a | Alexander Potapenko | 09 August 2018, 09:30:15 UTC | kmsan: don't use |pc| passed to __msan_poison_alloca() It should be simpler to just get the necessary number of alloca stack frames in __msan_poison_alloca(). Right now we store only the return address of __msan_poison_alloca() and the caller, for which we need kmsan_internal_return_address(). | 28 August 2018, 11:10:12 UTC |
| 0a28b4d | Alexander Potapenko | 08 August 2018, 16:53:15 UTC | kmsan: fix put_user() instrumentation | 28 August 2018, 11:10:12 UTC |
| 649ea75 | Alexander Potapenko | 08 August 2018, 15:47:21 UTC | kmsan: instrument get_user() and put_user() properly | 28 August 2018, 11:10:12 UTC |
| 7590a91 | Alexander Potapenko | 08 August 2018, 11:28:06 UTC | kmsan: update LLVM/Clang patches to r339138 | 28 August 2018, 11:10:12 UTC |
| 93ec5c5 | Alexander Potapenko | 20 July 2018, 17:33:44 UTC | kmsan: update LLVM/Clang patches to r337583. | 28 August 2018, 11:10:11 UTC |
| 7c00d72 | Alexander Potapenko | 13 July 2018, 16:19:11 UTC | kmsan: fix CONFIG_KMSAN=n build | 28 August 2018, 11:10:11 UTC |
| f3448d7 | Alexander Potapenko | 13 July 2018, 14:13:39 UTC | kmsan: drop unused functions that copy shadow and origins around | 28 August 2018, 11:10:11 UTC |
| 3190bbd | Alexander Potapenko | 13 July 2018, 14:07:53 UTC | kmsan: rename __msan_warning_32() to __msan_warning() Keep the old name around till the compiler updates. | 28 August 2018, 11:10:11 UTC |
| ec17d5e | Alexander Potapenko | 13 July 2018, 10:24:40 UTC | kmsan: unpoison the buffer in snd_pcm_oss_change_params_locked() | 28 August 2018, 11:10:11 UTC |
| 1478894 | Alexander Potapenko | 13 July 2018, 09:36:16 UTC | kmsan: speculatively unpoison output buffer in snd_pcm_plugin_alloc() Doing so to avoid false positive reports. A better solution would be to find the actual place where the data is copied from the sound card to the buffer. | 28 August 2018, 11:10:11 UTC |
| 943d0aa | Alexander Potapenko | 10 July 2018, 12:42:23 UTC | kmsan: implement kmsan_memmove_shadow() and kmsan_memmove_origins() We've seen false report being caused by memmove() copying the metadata incorrectly for overlapping regions. | 28 August 2018, 11:10:11 UTC |
| 040badd | Alexander Potapenko | 09 July 2018, 16:59:55 UTC | kmsan: disable asm-goto This is a temporary workaround for e501ce957a78 ("x86: Force asm-goto") Reverting all the patches corresponding to asm-goto is getting more and more painful. | 28 August 2018, 11:10:11 UTC |
| ae26eeb | Alexander Potapenko | 09 July 2018, 16:45:43 UTC | kmsan: disable strscpy() optimization under KMSAN | 28 August 2018, 11:10:11 UTC |
| 68b9b89 | Alexander Potapenko | 06 July 2018, 09:29:55 UTC | kmsan: delete some dead code | 28 August 2018, 11:10:11 UTC |
| a5e966d | Alexander Potapenko | 06 July 2018, 09:21:42 UTC | kmsan: split KMSAN hooks into a separate file Also drop several unused functions. | 28 August 2018, 11:10:11 UTC |
| b6717c6 | Alexander Potapenko | 05 July 2018, 17:39:35 UTC | kmsan: move entry hooks to kmsan_entry.c | 28 August 2018, 11:10:11 UTC |
| 1af9bc9 | Alexander Potapenko | 05 July 2018, 17:19:47 UTC | kmsan: remove kmsan_threads_ready This anyway was equivalent to kmsan_ready | 28 August 2018, 11:10:11 UTC |
| c799b2a | Alexander Potapenko | 05 July 2018, 17:12:50 UTC | kmsan: nuke unused variables in kmsan.c | 28 August 2018, 11:10:11 UTC |
| 3502e37 | Alexander Potapenko | 05 July 2018, 17:00:42 UTC | kmsan: nuke the stats | 28 August 2018, 11:10:11 UTC |
| 01f7f9a | Alexander Potapenko | 05 July 2018, 16:55:37 UTC | kmsan: cleanup kmsan_init.c, NFC | 28 August 2018, 11:10:10 UTC |
| 468d1a2 | Alexander Potapenko | 05 July 2018, 15:43:54 UTC | kmsan: undo accidental unroll of DECLARE_METADATA_PTR_GETTER(4) | 28 August 2018, 11:10:10 UTC |
| 1fd6601 | Alexander Potapenko | 05 July 2018, 13:29:10 UTC | kmsan: drop kmsan_dummy_state to avoid races This is another attempt to fix the long-standing false positives on local vars. We've noticed some uninit reports originating from flags@_raw_spin_lock_irqsave came from calls to _raw_spin_lock_irqsave() from do_task_dead(). Turned out the task was already shut down, so KMSAN was using the global kmsan_dummy_state struct to pass the metadata for arguments and return values. In the case many tasks died at the same time race conditions were possible. We switch to using a per-CPU dummy state instead of a global one. | 28 August 2018, 11:10:10 UTC |
| e62916b | Alexander Potapenko | 04 July 2018, 14:00:25 UTC | kmsan: check the ESI!=RSI hypothesis | 28 August 2018, 11:10:10 UTC |
| 3812fc0 | Alexander Potapenko | 04 July 2018, 12:05:40 UTC | kmsan: try nesting the contexts instead of switching to them Context switches related to various interrupts in the kernel can be nested, with certain interrupt types being able to occur within the interrupts of the same type. Instead of trying to map the KMSAN contexts to different interrupt types, just keep a stack of them. | 28 August 2018, 11:10:10 UTC |
| 26474d7 | Alexander Potapenko | 04 July 2018, 11:38:51 UTC | kmsan: support cpu_entry_area For the repro below: perf_event_open(&(0x7f0000000100)={0x2000000005, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, @perf_bp={&(0x7f0000000000), 0x1}}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = socket$inet_tcp(0x2, 0x1, 0x0) setsockopt$SO_ATTACH_FILTER(r0, 0x1, 0x1a, &(0x7f0000000000)={0x1, &(0x7f0000000040)=[{}]}, 0x10) the kernel used to crash while attempting to run on the stack belonging to the cpu_entry_area. There are no struct pages for cpu_entry_area, therefore we can't allocate metadata pages for it. Instead we create two per-CPU arrays, cpu_entry_area_shadow and cpu_entry_area_origin, which will serve as shadow/origin storage for the stacks in the cpu_entry_area. Also handle switches to the IST stacks by calling the kmsan_ist_enter() and kmsan_ist_exit() hooks in entry_64.S. Looks like this only happens for DEBUG_STACK at the moment. | 28 August 2018, 11:10:10 UTC |
| 7eeb73f | Alexander Potapenko | 04 July 2018, 11:29:57 UTC | kmsan: fix kmsan.h | 28 August 2018, 11:10:10 UTC |
| 0f9e54a | Alexander Potapenko | 03 July 2018, 11:19:02 UTC | kmsan: setup_percpu.c: remove unused declaration | 28 August 2018, 11:10:10 UTC |
| 9c15821 | Alexander Potapenko | 02 July 2018, 17:38:10 UTC | kmsan: fix assertions in IRQ entry/exit hooks. | 28 August 2018, 11:10:10 UTC |
| a45878f | Alexander Potapenko | 02 July 2018, 14:20:10 UTC | kmsan: handle mappings of size other than 2^n in kmsan_acpi_map() If |size| isn't an exact power of 2, order_from_size() rounds it up to the nearest power of 2. Because only |size| bytes of the original memory are accessible, we must be careful not to set shadow/origin pointers for more than ALIGN(size, PAGE_SIZE) >> PAGE_OFFSET pages. | 28 August 2018, 11:10:10 UTC |
| e15f0a6 | Alexander Potapenko | 02 July 2018, 13:07:06 UTC | kmsan: debug printing in order_from_size() | 28 August 2018, 11:10:10 UTC |
| 5c538ed | Alexander Potapenko | 02 July 2018, 11:18:22 UTC | kmsan: add empty stubs for kmsan_syscall_enter()/kmsan_syscall_exit() | 28 August 2018, 11:10:10 UTC |
| b77ece3 | Alexander Potapenko | 02 July 2018, 10:09:50 UTC | kmsan: better IRQ handling Only rely on explicitly set per-CPU flags to detect in which context we are. Set those flags in arch/x86/entry/entry_64.S. | 28 August 2018, 11:10:10 UTC |
| a4eb573 | Alexander Potapenko | 29 June 2018, 15:17:53 UTC | kmsan: several changes to page handling - replace page.is_kmsan_untracked_page with page.is_kmsan_tracked_page, so that pages are untracked by default; - fix kmsan_init.c, where this logic inversion caused new crashes - handle clear_page() | 28 August 2018, 11:10:10 UTC |
| 3b0f9fd | Alexander Potapenko | 26 June 2018, 12:02:07 UTC | kmsan: preliminary support for virtual memory For vmalloc() and vmap() addresses (but unfortunately not those returned by ioremap) we use vmalloc_to_page() to get the corresponding physical pages. For vmap() we create additional vmaps for shadow and origin pages in order to make accesses to virtual addresses initialize real shadow/origin pages, and vice versa. | 28 August 2018, 11:10:10 UTC |
| 2c5358d | Alexander Potapenko | 21 June 2018, 10:28:15 UTC | kmsan: add a test for vmap() | 28 August 2018, 11:10:09 UTC |
| e4c51e8 | Alexander Potapenko | 20 June 2018, 15:42:06 UTC | stackdepot: don't ignore the __GFP_NO_KMSAN_SHADOW flag | 28 August 2018, 11:10:09 UTC |
| 92daf66 | Alexander Potapenko | 18 June 2018, 15:03:38 UTC | kmsan: introduce kmsan_interrupt_enter()/kmsan_interrupt_exit() preempt_count() and the percpu |irq_count| var can't be used to reliably tell whether we're in the interrupt context. For example, __do_softirq() is entered with in_task()==true, despite we soon switch to the interrupt stack. To simplify tracking IRQ entry/exit, we add calls to KMSAN runtime around do_IRQ() in entry64.S A similar approach is taken in https://github.com/google/ktsan/commit/f213f1b741c9468f6a692b012d40bdcd8d8dffca | 28 August 2018, 11:10:09 UTC |
| 2364904 | Alexander Potapenko | 14 June 2018, 14:00:55 UTC | kmsan: add a newline before "Uninit was created at:" fixes https://github.com/google/kmsan/issues/22 | 28 August 2018, 11:10:09 UTC |
| 7a70633 | Alexander Potapenko | 14 June 2018, 13:54:42 UTC | kmsan: page range may be non-contiguous in get_user_pages_fast() | 28 August 2018, 11:10:09 UTC |
| 2e44d6c | Alexander Potapenko | 14 June 2018, 13:15:50 UTC | kmsan: fix off-by-one error in map_pages() fixes 0064ced63c1b76338697a193299e0f4496f4fb7c ("kmsan: don't track pages used for memory compaction") | 28 August 2018, 11:10:09 UTC |
| ca69ffd | Alexander Potapenko | 14 June 2018, 11:59:09 UTC | kmsan: don't track pages used for memory compaction TODO(glider): track them | 28 August 2018, 11:10:09 UTC |
| a98e040 | Alexander Potapenko | 08 March 2018, 10:12:24 UTC | kmsan: unpoison virtio input buffers when adding them to to virtqueue It's hard (and too late already) to figure out the memory range to be unpoisoned when we receive something via virtio. Instead, we unpoison the input buffer before putting it into the virtqueue. | 28 August 2018, 11:10:09 UTC |
| 3da0b4c | Alexander Potapenko | 12 June 2018, 09:32:56 UTC | kmsan: fix the CONFIG_KMSAN=n build | 28 August 2018, 11:10:09 UTC |
| 566dead | Alexander Potapenko | 11 June 2018, 11:53:24 UTC | kmsan: copy metadata for pages in copy_user_highpage()/copy_highpage() | 28 August 2018, 11:10:09 UTC |
| a79132c | Alexander Potapenko | 08 June 2018, 16:26:47 UTC | kmsan: copy shadow/origins for COWed pages Fixes the following case: process_vm_readv(0xfd2, 0x20000440, 0x1, 0x200006c0, 0x1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) = 0x2800 clone(child_stack=0x20fbf000, flags=CLONE_FS) = 4052 gettid() = 4050 process_vm_readv(0xfd2, 0x20000440, 0x1, 0x200006c0, 0x1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) = 0x2800 | 28 August 2018, 11:10:09 UTC |
| 8600deb | Alexander Potapenko | 08 June 2018, 12:18:24 UTC | kmsan: added .config.extended | 28 August 2018, 11:10:08 UTC |
| b18a9c7 | Alexander Potapenko | 08 June 2018, 11:09:57 UTC | kmsan: report copy_to_user() bugs as "kernel-infoleak" | 28 August 2018, 11:10:08 UTC |
| 9650030 | Alexander Potapenko | 07 June 2018, 16:46:33 UTC | kmsan: unpoison data in pdu_read() This removes a bunch of reports in 9P, but for some reason the 9P-enabled kernel still doesn't boot with KMSAN. | 28 August 2018, 11:10:08 UTC |
| 36d5702 | Alexander Potapenko | 07 June 2018, 13:42:42 UTC | kmsan: update .config.example | 28 August 2018, 11:10:08 UTC |
| 112ed18 | Alexander Potapenko | 07 June 2018, 11:49:44 UTC | kmsan: remove dead code to trigger syzbot build | 28 August 2018, 11:10:08 UTC |
| cb35360 | Alexander Potapenko | 07 June 2018, 09:40:11 UTC | Revert "x86: Remove FAST_FEATURE_TESTS" This reverts commit d0266046ad54e0c964941364cd82a0d0478ce286. | 28 August 2018, 11:10:08 UTC |
| 4d859ad | Alexander Potapenko | 07 June 2018, 09:39:59 UTC | Revert "x86/cpufeature: Guard asm_volatile_goto usage for BPF compilation" This reverts commit b1ae32dbab50ed19cfc16d225b0fb0114fb13025. | 28 August 2018, 11:10:08 UTC |
| e4342f0 | Alexander Potapenko | 06 June 2018, 16:49:30 UTC | kmsan: drop some dead code | 28 August 2018, 10:31:24 UTC |
| 0175583 | Alexander Potapenko | 06 June 2018, 16:30:47 UTC | kmsan: updated LLVM/Clang patches to r334104 Fixed incorrect handling of va_args Added __msan_unpoison_alloca() calls | 28 August 2018, 10:31:24 UTC |
| a421356 | Alexander Potapenko | 06 June 2018, 15:21:12 UTC | kmsan: instrument kernel/module.c Skipping this file causes false positives when unloading modules. | 28 August 2018, 10:31:24 UTC |
| d717e98 | Alexander Potapenko | 05 June 2018, 09:48:33 UTC | kmsan: implement __msan_unpoison_alloca() | 28 August 2018, 10:31:24 UTC |
| d8f3745 | Alexander Potapenko | 30 May 2018, 09:08:32 UTC | kmsan: unpoison regs in arch_uprobe_exception_notify() | 28 August 2018, 10:31:24 UTC |
| c16b61c | Alexander Potapenko | 18 May 2018, 16:07:34 UTC | kmsan: bump LLVM/Clang patches to r332596 | 28 August 2018, 10:31:24 UTC |
| 57cc1d9 | Alexander Potapenko | 18 May 2018, 14:51:17 UTC | kmsan: disable some dead code | 28 August 2018, 10:31:24 UTC |
| 3633cb0 | Alexander Potapenko | 17 May 2018, 11:15:48 UTC | kmsan: print addresses in reports when possible This is currently only possible for kmsan_check_memory() | 28 August 2018, 10:31:24 UTC |
| e26dbc4 | Alexander Potapenko | 17 May 2018, 09:08:16 UTC | kmsan: replace memcpy with __memcpy in non-instrumented files | 28 August 2018, 10:31:23 UTC |
| 89bc046 | Alexander Potapenko | 16 May 2018, 09:30:42 UTC | kmsan: update .config.example to v4.17-rc5 | 28 August 2018, 10:29:17 UTC |
| 1d4f3ee | Alexander Potapenko | 15 May 2018, 16:35:09 UTC | kmsan: unpoison only the created pages in get_user_pages_fast() gup_pgd_range() may return less pages than requested. In that case we must unpoison only the created pages. | 28 August 2018, 10:29:17 UTC |
| e85c8bb | Alexander Potapenko | 15 May 2018, 13:40:10 UTC | kmsan: fixup for 1c54bfda4c94209b183b6ac9dae22d98a7e4e76f Encryption and decryption functions must both check the inputs and unpoison the outputs. | 28 August 2018, 10:29:17 UTC |
| 12be96f | Alexander Potapenko | 15 May 2018, 13:32:36 UTC | kmsan: handle crypto_cipher_encrypt_one()/crypto_cipher_decrypt_one() These functions touch memory one block at a time. Because they're often implemented in assembly, we just unpoison the output blocks and check the inputs. | 28 August 2018, 10:29:17 UTC |
| 2a08666 | Alexander Potapenko | 15 May 2018, 12:08:10 UTC | kmsan: introduce kmsan_clear_user_page() Use it to unpoison pages in clear_user_highpage(). This should fix a number of false positives. It's not clear yet, whether shadow and origin pages can be in high memory, probably no. | 28 August 2018, 10:29:17 UTC |
| e30ea2c | Alexander Potapenko | 14 May 2018, 12:50:33 UTC | kmsan: don't panic if copy_to_user() succeeded only partially Let the caller care about this. | 28 August 2018, 10:29:16 UTC |
| 575b4c2 | Alexander Potapenko | 14 May 2018, 12:50:09 UTC | kmsan: fix false positives in do_error_trap() Unpoison |regs| in do_error_trap(). | 28 August 2018, 10:29:16 UTC |
| 9a900b6 | Alexander Potapenko | 11 May 2018, 08:24:47 UTC | kmsan: don't instrument code unwinding the stack | 28 August 2018, 10:29:16 UTC |
| 3cab6e8 | Alexander Potapenko | 08 May 2018, 16:24:12 UTC | kmsan: bump .config.example to v4.17-rc3 | 28 August 2018, 10:29:16 UTC |
| 83bb4e5 | Dmitry Vyukov | 22 April 2018, 15:05:22 UTC | kmsan: add initialization for shmem pages Maybe we need to instrument clear_highpage/clear_page instead. But for now this fixes the most common source of false positives. | 28 August 2018, 10:29:16 UTC |
| 3c860af | Dmitry Vyukov | 22 April 2018, 15:02:35 UTC | kmsan: fix NULL deref bh can still be NULL. Top crasher with syzkaller. | 28 August 2018, 10:29:16 UTC |
| b770f9e | Dmitry Vyukov | 21 April 2018, 13:50:22 UTC | kmsan: disable assembly checksums Checksum functions implemented in assembly produce large number of false positives. There are generic functions available that do not use assembly. Switch to them under KMSAN. | 28 August 2018, 10:29:16 UTC |
| d4f2395 | Dmitry Vyukov | 21 April 2018, 13:49:46 UTC | kmsan: disable reporting in stack unwinding Stack unwinding produces lots of false positives. | 28 August 2018, 10:29:16 UTC |
| 4400670 | Dmitry Vyukov | 21 April 2018, 13:48:58 UTC | kmsan: disable memcpy-param-overlap check There are known false positives. | 28 August 2018, 10:29:16 UTC |
| 4dd7f79 | Dmitry Vyukov | 16 April 2018, 08:42:26 UTC | mm/kmsan: fix origin calculation in kmsan_internal_check_memory | 28 August 2018, 10:29:16 UTC |
| be4ee2e | parkerduckworth | 09 April 2018, 22:15:58 UTC | readme typo | 28 August 2018, 10:29:16 UTC |
| 3990aa1 | Alexander Potapenko | 06 April 2018, 16:24:31 UTC | kmsan: temporarily disable visitAsmInstruction() to help syzbot | 28 August 2018, 10:29:16 UTC |
| 84458e0 | Alexander Potapenko | 02 January 2018, 12:33:53 UTC | kmsan: suppress false positives in assembly routines TODO(glider): handle the assembly in the compiler properly instead | 28 August 2018, 10:29:16 UTC |
| 3eb4d63 | Alexander Potapenko | 02 January 2018, 12:42:04 UTC | kmsan: suppress false positives in RNG functions | 28 August 2018, 10:29:15 UTC |
| 86aa950 | Alexander Potapenko | 20 September 2017, 00:24:22 UTC | kmsan: suppress a false positive in __down_write_trylock() | 28 August 2018, 10:29:15 UTC |
| 8a8fe2a | Alexander Potapenko | 02 February 2018, 16:26:50 UTC | kmsan: suppress false positives in cmpxchg and percpu operations | 28 August 2018, 10:29:15 UTC |
| 62c9792 | Alexander Potapenko | 06 April 2018, 15:47:51 UTC | kmsan: drop log2_next() | 28 August 2018, 10:29:15 UTC |
| a3a5d43 | Alexander Potapenko | 06 April 2018, 14:56:31 UTC | kmsan: don't instrument kernel/module.c | 28 August 2018, 10:29:15 UTC |
| c13d9a1 | Alexander Potapenko | 06 April 2018, 13:27:19 UTC | kmsan: bump patches to LLVM r329391, ignore big asm() accesses Don't unpoison memory locations greater than 16 bytes in visitAsmInstruction() | 28 August 2018, 10:29:15 UTC |
| 89ef946 | Alexander Potapenko | 06 April 2018, 11:40:58 UTC | kmsan: LLVM: don't unpoison memory locations >4096 bytes in asm | 28 August 2018, 10:29:15 UTC |
| 5d3f00e | Alexander Potapenko | 06 April 2018, 11:01:00 UTC | kmsan: replace %p with %px, also drop some dead pr_errs() | 28 August 2018, 10:29:15 UTC |
| dbb8efe | Alexander Potapenko | 05 April 2018, 09:38:22 UTC | kmsan: align dummy metadata pages on PAGE_SIZE | 28 August 2018, 10:29:15 UTC |
| 2fbfdff | Alexander Potapenko | 04 April 2018, 14:13:48 UTC | kmsan: drop an occasionally committed debug line | 28 August 2018, 10:29:15 UTC |
| ccc1418 | Alexander Potapenko | 04 April 2018, 14:06:54 UTC | kmsan: don't instrument big percpu arrays (temporary workaround) This is a hotfix for syzbot. The current Clang version dies with the following error message: 1. <eof> parser at end of file 2. Code generation 3. Running pass 'Function Pass Manager' on module 'arch/x86/mm/cpu_entry_area.c'. 4. Running pass 'X86 DAG->DAG Instruction Selection' on function '@setup_cpu_entry_areas' clang-7: error: unable to execute command: Aborted when attempting to build the kernel with extended stack size (see 0f35ce79c491cbf0). This can be fixed in the compiler, but for now it's faster to disable instrumentation for arch/x86/kernel/setup_percpu.c and arch/x86/mm/cpu_entry_area.c | 28 August 2018, 10:29:14 UTC |
| 8e1e7ab | Alexander Potapenko | 04 April 2018, 12:38:34 UTC | kmsan: hotfix page_64_types.h | 28 August 2018, 10:29:14 UTC |
| cf157ba | Alexander Potapenko | 04 April 2018, 11:59:47 UTC | kmsan: double the stack size again (4x from normal stack size) | 28 August 2018, 10:29:14 UTC |
| 08968b8 | Alexander Potapenko | 03 April 2018, 20:16:39 UTC | kmsan: drop unused_msan_check_range() | 28 August 2018, 10:29:14 UTC |
| 8e7f5fa | Alexander Potapenko | 03 April 2018, 15:30:09 UTC | kmsan: minor report improvements - capitalize the first words on lines - print empty lines between stacks - more understandable text | 28 August 2018, 10:29:14 UTC |
| e912451 | Alexander Potapenko | 03 April 2018, 14:58:49 UTC | kmsan: support panic_on_warn | 28 August 2018, 10:29:14 UTC |
| d05b535 | Alexander Potapenko | 26 March 2018, 08:28:02 UTC | kmsan: provide __force_order to fix linkage New KMSAN instrumentation pass requires the fake __force_order variable to be present at link time | 28 August 2018, 10:29:14 UTC |
| 448a64b | Alexander Potapenko | 13 March 2018, 11:46:59 UTC | kmsan: unpoison pages allocated for reading in bio_copy_kern() SCSI devices overwrite these pages with data that we consider initialized. It's hard to find the exact place where it happens, so just unpoison the pages in advance. Sketch test case: int main() { int fd = open("/dev/sg0", O_RDWR); struct scsi_ioctl_command *cmd; cmd = calloc(1, sizeof(struct scsi_ioctl_command) + 128); cmd->outlen = 0x4a; ioctl(fd, /*SCSI_IOCTL_SEND_COMMAND*/1, cmd); fprintf(stderr, "data: %p\n", cmd->data); return 0; } | 28 August 2018, 10:29:14 UTC |
