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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702464724; x=1703069524; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=7ftCfKCRq8OSmkVdhonRoEbR3cW4p8KApUvLOiMHS90=; b=ZjBbwGLtArJvgER5LjWNDn8f5/7tYJ26GG2pT7NBHm31ITohBDBqkDBOMf8ewFwPZ9 igTAxVe3cqilbhqv7/A1ivpbK+Et4Rod6XANfjUbpmPMSrG8Hfch7oLWcpgj/H1PAiVu 0G/wpbvURuLlufwFUE4BT1pD6WBjJKfcWcXySilYBlODyu/xKXSxZ/pTm7KCjJDj9Wzw +WMkvVTuncU7M8wCe/qne/RjZCTNVBI/Ewz4eg+gxL9KSet8vPZ8VpGJ6waop1CtajuH TZaSyj7GSKw2QdBvLIP2XfH0BgrXCtyQfAhFGqre3d3+MGzkhH1LdFQTWK9Fdv8JT3lG Uvaw== X-Gm-Message-State: AOJu0YyTkbnFkYsKwy1PXvMrw6s713htKsFD0HU3DCocp75VL7e5hSb/ FBh5o6yQfODtoAGRuUWxwIkQjPW956CdmswYAo3psZIrceieEFz9/yY= X-Received: by 2002:a9d:7694:0:b0:6d9:eaa0:fa84 with SMTP id j20-20020a9d7694000000b006d9eaa0fa84mr7974349otl.10.1702464723826; Wed, 13 Dec 2023 02:52:03 -0800 (PST) MIME-Version: 1.0 References: <20231213-drehen-einquartieren-56bbdda1177e@brauner> In-Reply-To: <20231213-drehen-einquartieren-56bbdda1177e@brauner> From: xingwei lee Date: Wed, 13 Dec 2023 18:51:52 +0800 Message-ID: Subject: Re: [syzbot] [gfs2] WARNING in vfs_utimes To: Christian Brauner Cc: syzbot+0c64a8706d587f73409e@syzkaller.appspotmail.com, gfs2@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-0.6 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on pete.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (pete.vger.email [0.0.0.0]); Wed, 13 Dec 2023 02:52:21 -0800 (PST) > On Wed, Dec 13, 2023 at 02:35:58PM +0800, xingwei lee wrote: > > Hello, I reproduced this bug with repro.c and repro.txt since it > > relatively large please see > > https://gist.github.com/xrivendell7/b3b804bbf6d8c9930b2ba22e2dfaa6e6 > > > > Since this bug in the dashboard > > https://syzkaller.appspot.com/bug?extid=3D0c64a8706d587f73409e use > > kernel commit: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds= /linux.git/log/?id=3Daed8aee11130a954356200afa3f1b8753e8a9482 > > kernel config: https://syzkaller.appspot.com/text?tag=3DKernelConfig&x= =3Ddf91a3034fe3f122 > > > > my repro.c use the seem config and it crash report like below, and > > it=E2=80=99s almost can make sure it the same as bug reported by syzobt= . > > Uh, can you reproduce this on mainline? > I so far fail to even with your repro. Hi I can still trigger my repro.c in the last mainline at HEAD: 88035e5694a8. As I say before the crash titled is WARNING in __folio_mark_dirty not WARNING in __folio_mark_dirty look this crash scene: root@syzkaller:~# uname -a Linux syzkaller 6.7.0-rc5-00042-g88035e5694a8 #3 SMP PREEMPT_DYNAMIC Wed Dec 13 12:47:36 CST 2023 x86_64 GNU/Linux root@syzkaller:~# ./c90 Setting up swapspace version 1, size =3D 122.1 MiB (127995904 bytes) no label, UUID=3Dfc291aa6-a2a5-45b4-a290-1a2e1b9725f9 [ 92.326728][ T8104] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 92.476988][ T8133] loop0: detected capacity change from 0 to 32768 [ 92.480453][ T8133] gfs2: fsid=3Dsyz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 92.480867][ T8133] gfs2: fsid=3Dsyz:syz: Now mounting FS (format 1802).= .. [ 92.484105][ T8133] gfs2: fsid=3Dsyz:syz.0: journal 0 mapped with 14 extents in 0ms [ 92.485628][ T4549] gfs2: fsid=3Dsyz:syz.0: jid=3D0, already locked for = use [ 92.485963][ T4549] gfs2: fsid=3Dsyz:syz.0: jid=3D0: Looking at journal.= .. [ 92.497655][ T4549] gfs2: fsid=3Dsyz:syz.0: jid=3D0: Journal head lookup took 11ms [ 92.498197][ T4549] gfs2: fsid=3Dsyz:syz.0: jid=3D0: Done [ 92.498521][ T8133] gfs2: fsid=3Dsyz:syz.0: first mount done, others may= mount [ 92.546508][ T8107] ------------[ cut here ]------------ [ 92.546835][ T8107] WARNING: CPU: 2 PID: 8107 at include/linux/backing-dev.h:255 __folio_mark_dirty+0x936/0x1120 [ 92.547304][ T8107] Modules linked in: [ 92.547483][ T8107] CPU: 2 PID: 8107 Comm: c90 Not tainted 6.7.0-rc5-00042-g88035e5694a8 #3 [ 92.547848][ T8107] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 92.548297][ T8107] RIP: 0010:__folio_mark_dirty+0x936/0x1120 [ 92.548558][ T8107] Code: f8 ff ff e8 5c 72 c8 ff 0f 0b e9 c9 f8 ff ff 31 ff e8 4e 72 c8 ff 4c 89 f7 48 8b 74 24 20 e8 b1 15 2f 00 eb 9d e8 3a 72 c8 ff <0f> 0b e9 27 fb ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c dc f8 ff [ 92.549390][ T8107] RSP: 0018:ffffc9001389fa00 EFLAGS: 00010093 [ 92.549660][ T8107] RAX: ffffffff81c92f96 RBX: 0000000000000000 RCX: ffff888153fe9e80 [ 92.550009][ T8107] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 92.550357][ T8107] RBP: ffff888148d91fb8 R08: ffffffff81c92ab5 R09: 1ffff110291b23f7 [ 92.550704][ T8107] R10: dffffc0000000000 R11: ffffed10291b23f8 R12: 0000000000000001 [ 92.551053][ T8107] R13: ffff888148d91e40 R14: ffffea00052ec2c0 R15: 1ffff110291b23f7 [ 92.551400][ T8107] FS: 0000000001cbb3c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 92.551790][ T8107] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.552089][ T8107] CR2: 0000000001cc4738 CR3: 0000000154470000 CR4: 0000000000750ef0 [ 92.552452][ T8107] PKRU: 55555554 [ 92.552621][ T8107] Call Trace: [ 92.552778][ T8107] [ 92.552919][ T8107] ? __warn+0x16a/0x4c0 [ 92.553125][ T8107] ? __folio_mark_dirty+0x936/0x1120 [ 92.553376][ T8107] ? report_bug+0x2ca/0x520 [ 92.553603][ T8107] ? __folio_mark_dirty+0x936/0x1120 [ 92.553854][ T8107] ? handle_bug+0x3d/0x70 [ 92.554062][ T8107] ? exc_invalid_op+0x1a/0x50 [ 92.554285][ T8107] ? asm_exc_invalid_op+0x1a/0x20 [ 92.554532][ T8107] ? __folio_mark_dirty+0x455/0x1120 [ 92.554778][ T8107] ? __folio_mark_dirty+0x936/0x1120 [ 92.555027][ T8107] ? __folio_mark_dirty+0x936/0x1120 [ 92.555279][ T8107] mark_buffer_dirty+0x2ab/0x520 [ 92.555520][ T8107] gfs2_unpin+0x142/0xad0 [ 92.555732][ T8107] ? log_pull_tail+0x87/0x390 [ 92.555956][ T8107] buf_lo_after_commit+0x157/0x1b0 [ 92.556199][ T8107] ? buf_lo_before_commit+0xf0/0xf0 [ 92.556443][ T8107] gfs2_log_flush+0x1f45/0x26a0 [ 92.556671][ T8107] ? print_irqtrace_events+0x220/0x220 [ 92.556938][ T8107] ? gfs2_ail_empty_tr+0x320/0x320 [ 92.557178][ T8107] ? rcu_force_quiescent_state+0x230/0x230 [ 92.557453][ T8107] ? radix_tree_delete_item+0x2fd/0x420 [ 92.557714][ T8107] gfs2_kill_sb+0x60/0x340 [ 92.557924][ T8107] ? shrinker_free+0x2d8/0x3e0 [ 92.558150][ T8107] deactivate_locked_super+0xc8/0x140 [ 92.558407][ T8107] cleanup_mnt+0x444/0x4e0 [ 92.558618][ T8107] ? _raw_spin_unlock_irq+0x23/0x50 [ 92.558868][ T8107] task_work_run+0x257/0x310 [ 92.559091][ T8107] ? task_work_cancel+0x2c0/0x2c0 [ 92.559330][ T8107] ? exit_to_user_mode_loop+0x39/0x100 [ 92.559588][ T8107] exit_to_user_mode_loop+0xde/0x100 [ 92.559837][ T8107] exit_to_user_mode_prepare+0xb1/0x140 [ 92.560098][ T8107] syscall_exit_to_user_mode+0x64/0x280 [ 92.560367][ T8107] do_syscall_64+0x50/0x110 [ 92.560582][ T8107] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 92.560859][ T8107] RIP: 0033:0x43f117 [ 92.561047][ T8107] Code: 09 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 [ 92.561908][ T8107] RSP: 002b:00007fff2befd8e8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 92.562290][ T8107] RAX: 0000000000000000 RBX: 00007fff2befec28 RCX: 000000000043f117 [ 92.562650][ T8107] RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007fff2befd990 [ 92.563010][ T8107] RBP: 00007fff2befe9d0 R08: 0000000000000000 R09: 0000000000000000 [ 92.563367][ T8107] R10: 00000000ffffffff R11: 0000000000000206 R12: 0000000000000001 [ 92.563719][ T8107] R13: 00007fff2befec18 R14: 0000000000000001 R15: 0000000000000001 [ 92.564078][ T8107] [ 92.564220][ T8107] Kernel panic - not syncing: kernel: panic_on_warn se= t ... [ 92.564542][ T8107] CPU: 2 PID: 8107 Comm: c90 Not tainted 6.7.0-rc5-00042-g88035e5694a8 #3 [ 92.564919][ T8107] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 92.565374][ T8107] Call Trace: [ 92.565528][ T8107] [ 92.565665][ T8107] dump_stack_lvl+0x1f4/0x2f0 [ 92.565885][ T8107] ? nf_tcp_handle_invalid+0x680/0x680 [ 92.566135][ T8107] ? panic+0x880/0x880 [ 92.566331][ T8107] ? vscnprintf+0x64/0x90 [ 92.566532][ T8107] panic+0x35a/0x880 [ 92.566717][ T8107] ? __warn+0x179/0x4c0 [ 92.566911][ T8107] ? __memcpy_flushcache+0x2d0/0x2d0 [ 92.567163][ T8107] __warn+0x32e/0x4c0 [ 92.567349][ T8107] ? __folio_mark_dirty+0x936/0x1120 [ 92.567592][ T8107] report_bug+0x2ca/0x520 [ 92.567793][ T8107] ? __folio_mark_dirty+0x936/0x1120 [ 92.568037][ T8107] handle_bug+0x3d/0x70 [ 92.568231][ T8107] exc_invalid_op+0x1a/0x50 [ 92.568440][ T8107] asm_exc_invalid_op+0x1a/0x20 [ 92.568664][ T8107] RIP: 0010:__folio_mark_dirty+0x936/0x1120 [ 92.568930][ T8107] Code: f8 ff ff e8 5c 72 c8 ff 0f 0b e9 c9 f8 ff ff 31 ff e8 4e 72 c8 ff 4c 89 f7 48 8b 74 24 20 e8 b1 15 2f 00 eb 9d e8 3a 72 c8 ff <0f> 0b e9 27 fb ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c dc f8 ff [ 92.569771][ T8107] RSP: 0018:ffffc9001389fa00 EFLAGS: 00010093 [ 92.570047][ T8107] RAX: ffffffff81c92f96 RBX: 0000000000000000 RCX: ffff888153fe9e80 [ 92.570406][ T8107] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 92.570764][ T8107] RBP: ffff888148d91fb8 R08: ffffffff81c92ab5 R09: 1ffff110291b23f7 [ 92.571122][ T8107] R10: dffffc0000000000 R11: ffffed10291b23f8 R12: 0000000000000001 [ 92.571481][ T8107] R13: ffff888148d91e40 R14: ffffea00052ec2c0 R15: 1ffff110291b23f7 [ 92.571844][ T8107] ? __folio_mark_dirty+0x455/0x1120 [ 92.572091][ T8107] ? __folio_mark_dirty+0x936/0x1120 [ 92.572346][ T8107] mark_buffer_dirty+0x2ab/0x520 [ 92.572581][ T8107] gfs2_unpin+0x142/0xad0 [ 92.572785][ T8107] ? log_pull_tail+0x87/0x390 [ 92.573010][ T8107] buf_lo_after_commit+0x157/0x1b0 [ 92.573249][ T8107] ? buf_lo_before_commit+0xf0/0xf0 [ 92.573493][ T8107] gfs2_log_flush+0x1f45/0x26a0 [ 92.573721][ T8107] ? print_irqtrace_events+0x220/0x220 [ 92.573982][ T8107] ? gfs2_ail_empty_tr+0x320/0x320 [ 92.574222][ T8107] ? rcu_force_quiescent_state+0x230/0x230 [ 92.574494][ T8107] ? radix_tree_delete_item+0x2fd/0x420 [ 92.574754][ T8107] gfs2_kill_sb+0x60/0x340 [ 92.574965][ T8107] ? shrinker_free+0x2d8/0x3e0 [ 92.575191][ T8107] deactivate_locked_super+0xc8/0x140 [ 92.575444][ T8107] cleanup_mnt+0x444/0x4e0 [ 92.575654][ T8107] ? _raw_spin_unlock_irq+0x23/0x50 [ 92.575898][ T8107] task_work_run+0x257/0x310 [ 92.576118][ T8107] ? task_work_cancel+0x2c0/0x2c0 [ 92.576363][ T8107] ? exit_to_user_mode_loop+0x39/0x100 [ 92.576620][ T8107] exit_to_user_mode_loop+0xde/0x100 [ 92.576871][ T8107] exit_to_user_mode_prepare+0xb1/0x140 [ 92.577129][ T8107] syscall_exit_to_user_mode+0x64/0x280 [ 92.577390][ T8107] do_syscall_64+0x50/0x110 [ 92.577604][ T8107] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 92.577879][ T8107] RIP: 0033:0x43f117 [ 92.578062][ T8107] Code: 09 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 [ 92.578920][ T8107] RSP: 002b:00007fff2befd8e8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 92.579299][ T8107] RAX: 0000000000000000 RBX: 00007fff2befec28 RCX: 000000000043f117 [ 92.579655][ T8107] RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007fff2befd990 [ 92.580014][ T8107] RBP: 00007fff2befe9d0 R08: 0000000000000000 R09: 0000000000000000 [ 92.580375][ T8107] R10: 00000000ffffffff R11: 0000000000000206 R12: 0000000000000001 [ 92.580732][ T8107] R13: 00007fff2befec18 R14: 0000000000000001 R15: 0000000000000001 [ 92.581097][ T8107] [ 92.581318][ T8107] Kernel Offset: disabled [ 92.581592][ T8107] Rebooting in 86400 seconds.. Please check again. Thanks! Best regards xingwei Lee.