Summary: | kernel 4.19.8: Undefined behaviour in ./include/uapi/linux/byteorder/little_endian.h:58:9 | ||
---|---|---|---|
Product: | Gentoo Linux | Reporter: | segmentation fault <segmentation-fault> |
Component: | Current packages | Assignee: | Gentoo Kernel Bug Wranglers and Kernel Maintainers <kernel> |
Status: | RESOLVED UPSTREAM | ||
Severity: | normal | ||
Priority: | Normal | ||
Version: | unspecified | ||
Hardware: | AMD64 | ||
OS: | Linux | ||
Whiteboard: | |||
Package list: | Runtime testing required: | --- |
Description
segmentation fault
2019-01-09 21:28:39 UTC
There is another UBSAN message for the same header, regarding line 66: kernel: ================================================================================ kernel: UBSAN: Undefined behaviour in ./include/uapi/linux/byteorder/little_endian.h:66:9 kernel: load of misaligned address 00000000f7138def for type 'const __le16' kernel: which requires 2 byte alignment kernel: CPU: 6 PID: 7414 Comm: mkswap Tainted: P O T 4.19.8-gentoo #1 kernel: Hardware name: ASUSTeK COMPUTER INC. G752VY/G752VY, BIOS G752VY.304 06/29/2017 kernel: Call Trace: kernel: dump_stack+0xa1/0x11b kernel: ubsan_epilogue+0x9/0x40 kernel: ubsan_type_mismatch_common+0x17b/0x190 kernel: __ubsan_handle_type_mismatch+0x43/0x60 kernel: LZ4_compress_default+0x3227/0x3b20 [lz4_compress] kernel: lz4_compress_crypto+0x36/0xb0 [lz4] kernel: zram_bvec_rw.isra.11+0x438/0x1770 [zram] kernel: zram_make_request+0x25b/0x7c9 [zram] kernel: generic_make_request+0x301/0xa30 kernel: ? submit_bio+0x3d/0x390 kernel: submit_bio+0x3d/0x390 kernel: ? guard_bio_eod+0x69/0x450 kernel: submit_bh_wbc+0x2a6/0x600 kernel: __block_write_full_page+0x2b3/0xb80 kernel: ? block_llseek+0xa0/0xa0 kernel: ? clear_page_dirty_for_io+0x402/0x850 kernel: __writepage+0x31/0x90 kernel: write_cache_pages+0x2c5/0xa80 kernel: ? __wb_calc_thresh+0x310/0x310 kernel: generic_writepages+0x77/0xe0 kernel: ? blkdev_writepage+0x10/0x10 kernel: ? do_writepages+0x7e/0x120 kernel: do_writepages+0x7e/0x120 kernel: __filemap_fdatawrite_range+0x10e/0x1e0 kernel: file_write_and_wait_range+0x48/0xb0 kernel: blkdev_fsync+0x2e/0x90 kernel: do_fsync+0x33/0x60 kernel: __x64_sys_fsync+0x14/0x30 kernel: do_syscall_64+0x85/0x280 kernel: entry_SYSCALL_64_after_hwframe+0x49/0xbe kernel: RIP: 0033:0x7f2b12b39108 kernel: Code: 00 00 48 83 ec 28 64 48 8b 04 25 28 00 00 00 48 89 44 24 18 31 c0 48 8d 05 1d c7 2c 00 8b 00 85 c0 75 27 b8 4a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 50 48 8b 74 24 18 64 48 33 34 25 28 00 00 00 kernel: RSP: 002b:00007ffc5a0dcdd0 EFLAGS: 00000246 ORIG_RAX: 000000000000004a kernel: RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2b12b39108 kernel: RDX: 00007f2b12e00b00 RSI: 0000000000000000 RDI: 0000000000000003 kernel: RBP: 0000000000000000 R08: 0000000000000024 R09: 00007ffc5a0dcf00 kernel: R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc5a0dcf00 kernel: R13: 000055580a786137 R14: 00000000000061b0 R15: 0000000000000000 kernel: ================================================================================ Same system as above ...and yet another for line 50: kernel: ================================================================================ kernel: UBSAN: Undefined behaviour in ./include/uapi/linux/byteorder/little_endian.h:50:9 kernel: load of misaligned address 00000000321b0896 for type 'const __le64' kernel: which requires 8 byte alignment kernel: CPU: 0 PID: 7415 Comm: swapon Tainted: P O T 4.19.8-gentoo #1 kernel: Hardware name: ASUSTeK COMPUTER INC. G752VY/G752VY, BIOS G752VY.304 06/29/2017 kernel: Call Trace: kernel: dump_stack+0xa1/0x11b kernel: ubsan_epilogue+0x9/0x40 kernel: ubsan_type_mismatch_common+0x17b/0x190 kernel: __ubsan_handle_type_mismatch+0x43/0x60 kernel: LZ4_decompress_safe+0x6da/0x960 kernel: ? part_round_stats+0x6f/0x1c0 kernel: lz4_decompress_crypto+0x24/0x80 [lz4] kernel: zcomp_decompress+0x4b/0xb0 [zram] kernel: zram_bvec_rw.isra.11+0x86e/0x1770 [zram] kernel: zram_rw_page+0xdf/0x1a0 [zram] kernel: ? zram_bvec_rw.isra.11+0x1770/0x1770 [zram] kernel: bdev_read_page+0xdd/0x1f0 kernel: do_mpage_readpage+0x844/0x14b0 kernel: ? add_to_page_cache_lru+0xc7/0x1b0 kernel: mpage_readpages+0x196/0x380 kernel: ? block_llseek+0xa0/0xa0 kernel: ? get_page_from_freelist+0x1899/0x3690 kernel: read_pages+0xa2/0x3c0 kernel: ? __do_page_cache_readahead+0x213/0x360 kernel: __do_page_cache_readahead+0x213/0x360 kernel: ondemand_readahead+0x316/0xd90 kernel: generic_file_read_iter+0xac8/0x1920 kernel: new_sync_read+0x1d7/0x4f0 kernel: vfs_read+0xa2/0x290 kernel: ksys_read+0x5c/0x100 kernel: do_syscall_64+0x85/0x280 kernel: entry_SYSCALL_64_after_hwframe+0x49/0xbe kernel: RIP: 0033:0x7f86841cbd45 kernel: Code: 00 00 0f 1f 00 48 83 ec 38 64 48 8b 04 25 28 00 00 00 48 89 44 24 28 31 c0 48 8d 05 dd 3a 2d 00 8b 00 85 c0 75 27 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 63 48 8b 4c 24 28 64 48 33 0c 25 28 00 00 00 kernel: RSP: 002b:00007ffd93dc2250 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 kernel: RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f86841cbd45 kernel: RDX: 0000000000010000 RSI: 0000557bbb60d5d0 RDI: 0000000000000003 kernel: RBP: 0000557bbb60c5c0 R08: 0000000000000003 R09: 00007f868449ae30 kernel: R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000003 kernel: R13: 00007ffd93dc2490 R14: 00007ffd93dc24cc R15: 0000557bbb60d5d0 kernel: ================================================================================ Detection of undefined behavior via the UndefinedBehaviorSanitizer can be reported upstream at https://bugzilla.kernel.org |