From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.2 required=3.0 tests=BAYES_00,DATE_IN_PAST_03_06, FROM_LOCAL_HEX,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0303CC433E8 for ; Sat, 20 Mar 2021 11:25:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD7CD6197B for ; Sat, 20 Mar 2021 11:25:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229985AbhCTLYw (ORCPT ); Sat, 20 Mar 2021 07:24:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42074 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229818AbhCTLYd (ORCPT ); Sat, 20 Mar 2021 07:24:33 -0400 Received: from mail-qv1-xf46.google.com (mail-qv1-xf46.google.com [IPv6:2607:f8b0:4864:20::f46]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A416FC0613B4 for ; Sat, 20 Mar 2021 03:45:51 -0700 (PDT) Received: by mail-qv1-xf46.google.com with SMTP id u17so33794545qvq.23 for ; Sat, 20 Mar 2021 03:45:51 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=EMUskcuEzog1w83F1xI5CU0Y2fOGHW/PlvzNd6W0cbM=; b=tCZQWa6FH6wWv3mjbCvFOMpscJQg4bWdjLdu25G6M7FsrUJwj7a6bh/3A4t5e2DW6o MXBDBoJImovsnM//LI9ypFnIqtJaUDZdyJk9jdC1SqjUrwPloQl+lSRshG3GXBr7LScO 0EucluwHZVom+TctrzMC6eeXJqE9iDPTcRo9SYeeSFdWQOfVtN87Qs5Yvf198RyZ6iYQ zxqSlqmX4ijYfqtL91qy5P41htvr9CMJ92s+q9W+0vFJako1IC0HYTLuyV0K0XfxIJ7e OhE4q/K0y34Lep1TZBSZcTT+lRB70sxX5AjZwwdcx39MfG0DiiSEg+VpJmfJRGZWB5HE jM1w== X-Gm-Message-State: AOAM530evGq7Oj2jj89D3k7Nd+54T9zkicEHvv0e0VsAqdufLpTTp8lD FE0h+WEQ5BBwuqLZU8mFnW92mwEEhUDNSG0Sc1kQGKcsKfjJ X-Google-Smtp-Source: ABdhPJyOUiJ5rSKPDZDPIXfEb1UXPcGjInd8faowfincXo3IURCbE1yAlK+c+aGYLdRl3n8lQnEkSQFfvlZLnFpEiPJ6TCpUvNiO MIME-Version: 1.0 X-Received: by 2002:a02:a303:: with SMTP id q3mr4392096jai.32.1616225182508; Sat, 20 Mar 2021 00:26:22 -0700 (PDT) Date: Sat, 20 Mar 2021 00:26:22 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e16a5e05bdf2bf08@google.com> Subject: [syzbot] KMSAN: uninit-value in btrfs_del_items From: syzbot To: clm@fb.com, dsterba@suse.com, glider@google.com, josef@toxicpanda.com, linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 29ad81a1 arch/x86: add missing include to sparsemem.h git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=17eda2dcd00000 kernel config: https://syzkaller.appspot.com/x/.config?x=8b976581f6bd1e7d dashboard link: https://syzkaller.appspot.com/bug?extid=953f9d0ed7600c6d97fb compiler: Debian clang version 11.0.1-2 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+953f9d0ed7600c6d97fb@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in btrfs_clean_tree_block+0x2a9/0x350 fs/btrfs/disk-io.c:995 CPU: 0 PID: 9616 Comm: syz-executor.3 Not tainted 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 ===================================================== ===================================================== BUG: KMSAN: uninit-value in check_eb_range fs/btrfs/extent_io.c:5690 [inline] BUG: KMSAN: uninit-value in memmove_extent_buffer+0x9a2/0xd30 fs/btrfs/extent_io.c:6146 CPU: 0 PID: 9616 Comm: syz-executor.3 Tainted: G B 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 check_eb_range fs/btrfs/extent_io.c:5690 [inline] memmove_extent_buffer+0x9a2/0xd30 fs/btrfs/extent_io.c:6146 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f13549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffe0580c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe058b0 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e3a RBP: 00000000ffe058b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5038 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2267 alloc_pages include/linux/gfp.h:547 [inline] __page_cache_alloc mm/filemap.c:981 [inline] pagecache_get_page+0x1127/0x2070 mm/filemap.c:1841 find_or_create_page include/linux/pagemap.h:404 [inline] alloc_extent_buffer+0x78c/0x28d0 fs/btrfs/extent_io.c:5293 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:959 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4597 [inline] btrfs_alloc_tree_block+0x545/0x2100 fs/btrfs/extent-tree.c:4698 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:989 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1045 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1490 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2670 lookup_inline_extent_backref+0x73a/0x38e0 fs/btrfs/extent-tree.c:862 lookup_extent_backref fs/btrfs/extent-tree.c:1078 [inline] __btrfs_free_extent+0x4e8/0x4df0 fs/btrfs/extent-tree.c:2994 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in check_eb_range fs/btrfs/extent_io.c:5690 [inline] BUG: KMSAN: uninit-value in memmove_extent_buffer+0x9ca/0xd30 fs/btrfs/extent_io.c:6147 CPU: 0 PID: 9616 Comm: syz-executor.3 Tainted: G B 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 check_eb_range fs/btrfs/extent_io.c:5690 [inline] memmove_extent_buffer+0x9ca/0xd30 fs/btrfs/extent_io.c:6147 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f13549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffe0580c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe058b0 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e3a RBP: 00000000ffe058b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5038 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2267 alloc_pages include/linux/gfp.h:547 [inline] __page_cache_alloc mm/filemap.c:981 [inline] pagecache_get_page+0x1127/0x2070 mm/filemap.c:1841 find_or_create_page include/linux/pagemap.h:404 [inline] alloc_extent_buffer+0x78c/0x28d0 fs/btrfs/extent_io.c:5293 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:959 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4597 [inline] btrfs_alloc_tree_block+0x545/0x2100 fs/btrfs/extent-tree.c:4698 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:989 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1045 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1490 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2670 lookup_inline_extent_backref+0x73a/0x38e0 fs/btrfs/extent-tree.c:862 lookup_extent_backref fs/btrfs/extent-tree.c:1078 [inline] __btrfs_free_extent+0x4e8/0x4df0 fs/btrfs/extent-tree.c:2994 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in check_eb_range fs/btrfs/extent_io.c:5690 [inline] BUG: KMSAN: uninit-value in memmove_extent_buffer+0x9db/0xd30 fs/btrfs/extent_io.c:6147 CPU: 0 PID: 9616 Comm: syz-executor.3 Tainted: G B 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 check_eb_range fs/btrfs/extent_io.c:5690 [inline] memmove_extent_buffer+0x9db/0xd30 fs/btrfs/extent_io.c:6147 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f13549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffe0580c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe058b0 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e3a RBP: 00000000ffe058b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5038 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2267 alloc_pages include/linux/gfp.h:547 [inline] __page_cache_alloc mm/filemap.c:981 [inline] pagecache_get_page+0x1127/0x2070 mm/filemap.c:1841 find_or_create_page include/linux/pagemap.h:404 [inline] alloc_extent_buffer+0x78c/0x28d0 fs/btrfs/extent_io.c:5293 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:959 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4597 [inline] btrfs_alloc_tree_block+0x545/0x2100 fs/btrfs/extent-tree.c:4698 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:989 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1045 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1490 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2670 lookup_inline_extent_backref+0x73a/0x38e0 fs/btrfs/extent-tree.c:862 lookup_extent_backref fs/btrfs/extent-tree.c:1078 [inline] __btrfs_free_extent+0x4e8/0x4df0 fs/btrfs/extent-tree.c:2994 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in memmove_extent_buffer+0xb39/0xd30 fs/btrfs/extent_io.c:6149 CPU: 0 PID: 9616 Comm: syz-executor.3 Tainted: G B 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 memmove_extent_buffer+0xb39/0xd30 fs/btrfs/extent_io.c:6149 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f13549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffe0580c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe058b0 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e3a RBP: 00000000ffe058b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5038 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2267 alloc_pages include/linux/gfp.h:547 [inline] __page_cache_alloc mm/filemap.c:981 [inline] pagecache_get_page+0x1127/0x2070 mm/filemap.c:1841 find_or_create_page include/linux/pagemap.h:404 [inline] alloc_extent_buffer+0x78c/0x28d0 fs/btrfs/extent_io.c:5293 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:959 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4597 [inline] btrfs_alloc_tree_block+0x545/0x2100 fs/btrfs/extent-tree.c:4698 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:989 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1045 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1490 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2670 lookup_inline_extent_backref+0x73a/0x38e0 fs/btrfs/extent-tree.c:862 lookup_extent_backref fs/btrfs/extent-tree.c:1078 [inline] __btrfs_free_extent+0x4e8/0x4df0 fs/btrfs/extent-tree.c:2994 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in memmove_extent_buffer+0xcb6/0xd30 fs/btrfs/extent_io.c:6153 CPU: 0 PID: 9616 Comm: syz-executor.3 Tainted: G B 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 memmove_extent_buffer+0xcb6/0xd30 fs/btrfs/extent_io.c:6153 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f13549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffe0580c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe058b0 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e3a RBP: 00000000ffe058b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5038 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2267 alloc_pages include/linux/gfp.h:547 [inline] __page_cache_alloc mm/filemap.c:981 [inline] pagecache_get_page+0x1127/0x2070 mm/filemap.c:1841 find_or_create_page include/linux/pagemap.h:404 [inline] alloc_extent_buffer+0x78c/0x28d0 fs/btrfs/extent_io.c:5293 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:959 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4597 [inline] btrfs_alloc_tree_block+0x545/0x2100 fs/btrfs/extent-tree.c:4698 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:989 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1045 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1490 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2670 lookup_inline_extent_backref+0x73a/0x38e0 fs/btrfs/extent-tree.c:862 lookup_extent_backref fs/btrfs/extent-tree.c:1078 [inline] __btrfs_free_extent+0x4e8/0x4df0 fs/btrfs/extent-tree.c:2994 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in memmove_extent_buffer+0x8e4/0xd30 fs/btrfs/extent_io.c:6162 CPU: 0 PID: 9616 Comm: syz-executor.3 Tainted: G B 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 memmove_extent_buffer+0x8e4/0xd30 fs/btrfs/extent_io.c:6162 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f13549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffe0580c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe058b0 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e3a RBP: 00000000ffe058b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5038 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2267 alloc_pages include/linux/gfp.h:547 [inline] __page_cache_alloc mm/filemap.c:981 [inline] pagecache_get_page+0x1127/0x2070 mm/filemap.c:1841 find_or_create_page include/linux/pagemap.h:404 [inline] alloc_extent_buffer+0x78c/0x28d0 fs/btrfs/extent_io.c:5293 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:959 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4597 [inline] btrfs_alloc_tree_block+0x545/0x2100 fs/btrfs/extent-tree.c:4698 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:989 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1045 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1490 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2670 lookup_inline_extent_backref+0x73a/0x38e0 fs/btrfs/extent-tree.c:862 lookup_extent_backref fs/btrfs/extent-tree.c:1078 [inline] __btrfs_free_extent+0x4e8/0x4df0 fs/btrfs/extent-tree.c:2994 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in memmove_extent_buffer+0x8fb/0xd30 fs/btrfs/extent_io.c:6162 CPU: 0 PID: 9616 Comm: syz-executor.3 Tainted: G B 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 memmove_extent_buffer+0x8fb/0xd30 fs/btrfs/extent_io.c:6162 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f13549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffe0580c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe058b0 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e3a RBP: 00000000ffe058b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5038 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2267 alloc_pages include/linux/gfp.h:547 [inline] __page_cache_alloc mm/filemap.c:981 [inline] pagecache_get_page+0x1127/0x2070 mm/filemap.c:1841 find_or_create_page include/linux/pagemap.h:404 [inline] alloc_extent_buffer+0x78c/0x28d0 fs/btrfs/extent_io.c:5293 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:959 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4597 [inline] btrfs_alloc_tree_block+0x545/0x2100 fs/btrfs/extent-tree.c:4698 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:989 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1045 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1490 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2670 lookup_inline_extent_backref+0x73a/0x38e0 fs/btrfs/extent-tree.c:862 lookup_extent_backref fs/btrfs/extent-tree.c:1078 [inline] __btrfs_free_extent+0x4e8/0x4df0 fs/btrfs/extent-tree.c:2994 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in copy_pages fs/btrfs/extent_io.c:6093 [inline] BUG: KMSAN: uninit-value in memmove_extent_buffer+0x97e/0xd30 fs/btrfs/extent_io.c:6162 CPU: 0 PID: 9616 Comm: syz-executor.3 Tainted: G B 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 copy_pages fs/btrfs/extent_io.c:6093 [inline] memmove_extent_buffer+0x97e/0xd30 fs/btrfs/extent_io.c:6162 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f13549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffe0580c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe058b0 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e3a RBP: 00000000ffe058b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5038 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2267 alloc_pages include/linux/gfp.h:547 [inline] __page_cache_alloc mm/filemap.c:981 [inline] pagecache_get_page+0x1127/0x2070 mm/filemap.c:1841 find_or_create_page include/linux/pagemap.h:404 [inline] alloc_extent_buffer+0x78c/0x28d0 fs/btrfs/extent_io.c:5293 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:959 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4597 [inline] btrfs_alloc_tree_block+0x545/0x2100 fs/btrfs/extent-tree.c:4698 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:989 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1045 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1490 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2670 lookup_inline_extent_backref+0x73a/0x38e0 fs/btrfs/extent-tree.c:862 lookup_extent_backref fs/btrfs/extent-tree.c:1078 [inline] __btrfs_free_extent+0x4e8/0x4df0 fs/btrfs/extent-tree.c:2994 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in stack_trace_consume_entry+0x151/0x310 kernel/stacktrace.c:85 CPU: 0 PID: 9616 Comm: syz-executor.3 Tainted: G B 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 stack_trace_consume_entry+0x151/0x310 kernel/stacktrace.c:85 arch_stack_walk+0x2fa/0x3c0 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x117/0x1a0 kernel/stacktrace.c:121 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6094 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6162 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f13549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffe0580c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe058b0 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e3a RBP: 00000000ffe058b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x57/0xa0 mm/kmsan/kmsan_instr.c:147 stack_trace_save+0x17f/0x1a0 kernel/stacktrace.c:115 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6094 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6162 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5038 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2267 alloc_pages include/linux/gfp.h:547 [inline] __page_cache_alloc mm/filemap.c:981 [inline] pagecache_get_page+0x1127/0x2070 mm/filemap.c:1841 find_or_create_page include/linux/pagemap.h:404 [inline] alloc_extent_buffer+0x78c/0x28d0 fs/btrfs/extent_io.c:5293 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:959 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4597 [inline] btrfs_alloc_tree_block+0x545/0x2100 fs/btrfs/extent-tree.c:4698 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:989 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1045 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1490 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2670 lookup_inline_extent_backref+0x73a/0x38e0 fs/btrfs/extent-tree.c:862 lookup_extent_backref fs/btrfs/extent-tree.c:1078 [inline] __btrfs_free_extent+0x4e8/0x4df0 fs/btrfs/extent-tree.c:2994 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in stack_trace_consume_entry+0x171/0x310 kernel/stacktrace.c:88 CPU: 0 PID: 9616 Comm: syz-executor.3 Tainted: G B 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 stack_trace_consume_entry+0x171/0x310 kernel/stacktrace.c:88 arch_stack_walk+0x2fa/0x3c0 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x117/0x1a0 kernel/stacktrace.c:121 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6094 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6162 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f13549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffe0580c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe058b0 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e3a RBP: 00000000ffe058b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x57/0xa0 mm/kmsan/kmsan_instr.c:147 stack_trace_save+0x193/0x1a0 kernel/stacktrace.c:115 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6094 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6162 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5038 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2267 alloc_pages include/linux/gfp.h:547 [inline] __page_cache_alloc mm/filemap.c:981 [inline] pagecache_get_page+0x1127/0x2070 mm/filemap.c:1841 find_or_create_page include/linux/pagemap.h:404 [inline] alloc_extent_buffer+0x78c/0x28d0 fs/btrfs/extent_io.c:5293 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:959 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4597 [inline] btrfs_alloc_tree_block+0x545/0x2100 fs/btrfs/extent-tree.c:4698 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:989 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1045 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1490 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2670 lookup_inline_extent_backref+0x73a/0x38e0 fs/btrfs/extent-tree.c:862 lookup_extent_backref fs/btrfs/extent-tree.c:1078 [inline] __btrfs_free_extent+0x4e8/0x4df0 fs/btrfs/extent-tree.c:2994 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in stack_trace_consume_entry+0x151/0x310 kernel/stacktrace.c:85 CPU: 0 PID: 9616 Comm: syz-executor.3 Tainted: G B 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 stack_trace_consume_entry+0x151/0x310 kernel/stacktrace.c:85 arch_stack_walk+0x2fa/0x3c0 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x117/0x1a0 kernel/stacktrace.c:121 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6094 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6162 btrfs_del_items+0x763/0x1a50 fs/btrfs/ctree.c:4929 __btrfs_free_extent+0x29d6/0x4df0 fs/btrfs/extent-tree.c:3210 run_delayed_tree_ref+0x806/0xa30 fs/btrfs/extent-tree.c:1689 run_one_delayed_ref fs/btrfs/extent-tree.c:1713 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1973 [inline] __btrfs_run_delayed_refs+0xf48/0x2c10 fs/btrfs/extent-tree.c:2038 btrfs_run_delayed_refs+0x2d6/0x920 fs/btrfs/extent-tree.c:2169 commit_cowonly_roots+0x2ff/0x1620 fs/btrfs/transaction.c:1233 btrfs_commit_transaction+0x204c/0x55b0 fs/btrfs/transaction.c:2275 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4076 close_ctree+0x473/0xef7 fs/btrfs/disk-io.c:4140 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:326 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1055 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2347 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1118 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1125 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:294 __do_fast_syscall_32+0x12d/0x160 arch/x86/entry/common.c:79 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f13549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffe0580c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffe058b0 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e3a RBP: 00000000ffe058b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_ --- This report is generated by a bot. 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