Messages in this thread | | | Date | Tue, 03 Sep 2019 12:05:06 -0700 | Subject | kernel BUG at ./include/linux/highmem.h:LINE! | From | syzbot <> |
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Hello,
syzbot found the following crash on:
HEAD commit: 6525771f Merge tag 'arc-5.3-rc7' of git://git.kernel.org/p.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17588432600000 kernel config: https://syzkaller.appspot.com/x/.config?x=58485246ad14eafe dashboard link: https://syzkaller.appspot.com/bug?extid=9256cdd80b48e98d3902 compiler: clang version 9.0.0 (/home/glider/llvm/clang 80fee25776c2fb61e74c1ecb1a523375c2500b69)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+9256cdd80b48e98d3902@syzkaller.appspotmail.com
attempt to access beyond end of device loop3: rw=1, want=27689, limit=106 ------------[ cut here ]------------ kernel BUG at ./include/linux/highmem.h:224! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 24596 Comm: syz-executor.3 Not tainted 5.3.0-rc6+ #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:zero_user_segments include/linux/highmem.h:224 [inline] RIP: 0010:zero_user include/linux/highmem.h:245 [inline] RIP: 0010:guard_bio_eod+0x632/0x640 fs/buffer.c:3043 Code: e8 ff e9 47 fe ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c a7 fe ff ff 4c 89 f7 e8 78 47 e8 ff e9 9a fe ff ff e8 2e 4f af ff <0f> 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 RSP: 0018:ffff88804b90eef8 EFLAGS: 00010283 RAX: ffffffff81c43b82 RBX: 0000000000004000 RCX: 0000000000040000 RDX: ffffc9000c775000 RSI: 0000000000005ba7 RDI: 0000000000005ba8 RBP: ffff88804b90ef48 R08: ffffffff81c439b5 R09: fffffbfff117be65 R10: fffffbfff117be65 R11: 0000000000000000 R12: 0000000000003e00 R13: 0000000000000200 R14: ffff88804ca5f548 R15: 1ffff1100994bea9 FS: 00007f038dbd5700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fa24000 CR3: 0000000094d86000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mpage_bio_submit fs/mpage.c:65 [inline] mpage_readpages+0x519/0x5a0 fs/mpage.c:410 fat_readpages+0x2c/0x40 fs/fat/inode.c:210 read_pages+0xb0/0x3e0 mm/readahead.c:126 __do_page_cache_readahead+0x480/0x530 mm/readahead.c:212 ondemand_readahead+0x6e1/0xcf0 mm/internal.h:62 page_cache_async_readahead+0x2af/0x340 mm/readahead.c:574 generic_file_buffered_read mm/filemap.c:2079 [inline] generic_file_read_iter+0x6a6/0x21b0 mm/filemap.c:2344 call_read_iter include/linux/fs.h:1864 [inline] new_sync_read fs/read_write.c:414 [inline] __vfs_read+0x59e/0x730 fs/read_write.c:427 integrity_kernel_read+0x113/0x190 security/integrity/iint.c:200 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:352 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:381 [inline] ima_calc_file_hash+0xaef/0x1b20 security/integrity/ima/ima_crypto.c:446 ima_collect_measurement+0x220/0x4a0 security/integrity/ima/ima_api.c:239 process_measurement+0xbdb/0x16c0 security/integrity/ima/ima_main.c:311 ima_file_check+0x9b/0xe0 security/integrity/ima/ima_main.c:422 do_last fs/namei.c:3420 [inline] path_openat+0x1760/0x4460 fs/namei.c:3533 do_filp_open+0x192/0x3d0 fs/namei.c:3563 do_sys_open+0x29f/0x560 fs/open.c:1089 __do_sys_open fs/open.c:1107 [inline] __se_sys_open fs/open.c:1102 [inline] __x64_sys_open+0x87/0x90 fs/open.c:1102 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459879 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f038dbd4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879 RDX: 0000000000000000 RSI: 0000000000141042 RDI: 0000000020000400 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f038dbd56d4 R13: 00000000004f907f R14: 00000000004dac90 R15: 00000000ffffffff Modules linked in: ---[ end trace 60aa945b5ab317e4 ]--- RIP: 0010:zero_user_segments include/linux/highmem.h:224 [inline] RIP: 0010:zero_user include/linux/highmem.h:245 [inline] RIP: 0010:guard_bio_eod+0x632/0x640 fs/buffer.c:3043 Code: e8 ff e9 47 fe ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c a7 fe ff ff 4c 89 f7 e8 78 47 e8 ff e9 9a fe ff ff e8 2e 4f af ff <0f> 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 RSP: 0018:ffff88804b90eef8 EFLAGS: 00010283 RAX: ffffffff81c43b82 RBX: 0000000000004000 RCX: 0000000000040000 RDX: ffffc9000c775000 RSI: 0000000000005ba7 RDI: 0000000000005ba8 RBP: ffff88804b90ef48 R08: ffffffff81c439b5 R09: fffffbfff117be65 R10: fffffbfff117be65 R11: 0000000000000000 R12: 0000000000003e00 R13: 0000000000000200 R14: ffff88804ca5f548 R15: 1ffff1100994bea9 FS: 00007f038dbd5700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fa24000 CR3: 0000000094d86000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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