From nobody Wed May 20 21:01:26 2026 X-Original-To: bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4gLP932BdZz6fQ5F for ; Wed, 20 May 2026 21:01:27 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R13" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4gLP931RJxz45V0 for ; Wed, 20 May 2026 21:01:27 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1779310887; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jELPXNncA+I8tuR+q2YoXbnLXreuvUPJAwnWPFMf4Fo=; b=bDKogIyX9v20qycCx/fhYKvwrx5vB86wKu/zLmBkpHVTuz5+aG9NWS6Ftn/umvKRg9lm/S gPVBKRT4kVsmD89xgzBlrh6M6+0k2TXLqi5BDU3nWTv+TE6NRzIkhYx1kR0eG433qyrZLo 2cE++GehZOn1g6wG3dlq4QmCP9XBUNu5C9u/B7cEzBrCRrlT7zm6LcdFdLyGrawUjyBVdy 6rVtpD0ToBMrTroob/cWFhSRDVD42aKXEvGorTQwl0FS6+fS3TDlKuqJ/SJV+0TgERBkeY pMi+y/Ag3ylV1Dz6LGIOxWpQKVu3Q1+2snrIruqi505efATNxtM1DZqbt4mzkA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1779310887; a=rsa-sha256; cv=none; b=c3E6IaWDgGbxeZ+ucc9flceAFBxctDnNfdiXEjmFTB3Qn+9taj0bd+kzX56KLsE01MjgFP kCEUsUYTOAaIcVVS3PQlD59T/Wyf/IRoPTvszxTjmxdq7qKmKRL92EL0jKXyDyOsnpXmgl wfjUwRr4YSiqTA37EDFsZUzqMYwaXwaTlPPNzqi1EUN/kriRyrukkWMOS6ORD6uJ03VMiA nGv4qCzgarDJ+ff/3GD0bcttepvlfyYikuTQ0I0GGYljZMGRX2otfeUb+jDYZqtSmg3gvE rGqIFhTGGCBtnzW/BeMSneupkC8qCzjsCqIlyXlQnhXVVhMF7G1jkclB4+4LFw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1779310887; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jELPXNncA+I8tuR+q2YoXbnLXreuvUPJAwnWPFMf4Fo=; b=AKI/d/CemipXWIvAnkgvNDMSXousYefPeAJdqmX/LyOTZ1NMq5olctDzi980zv7OfOLMFR RgQRpmG5OuhCAyjYijOT3e0h8Wd8X5Hkm5O58tvXnj/jZJGvhRKyHRqSgqwsH9EuWYJ5ex SX4SLjrwCpLSwcTzf8Q4IJDmkZxe3vf+YlS2AkOk3p3+gnyyr8n8Fk6cQeo6pxhFmYtwJZ s0KyBqMozr/P8atUjCCO3ucNvdyrIQr2K3osoQmwpw9s2bc9SYpak8G05rYYb91cMLhht7 8iBEwDMYs0nLsJFQPfMrAUiNIEjKzgQ24tTXTWJIwgf5VHZSzXhEO2PtNv9O4Q== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4gLP930vFQz1H8x for ; Wed, 20 May 2026 21:01:27 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 64KL1Rli082723 for ; Wed, 20 May 2026 21:01:27 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 64KL1R3f082722 for bugs@FreeBSD.org; Wed, 20 May 2026 21:01:27 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 275731] panic in zfs: VERIFY(buf[i] == 0) failed Date: Wed, 20 May 2026 21:01:26 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: jfc@mit.edu X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: see_also Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D275731 John F. Carr changed: What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://bugs.freebsd.org/bu | |gzilla/show_bug.cgi?id=3D2= 953 | |77 --- Comment #4 from John F. Carr --- I am convinced now that this is a bug with deduplication. If I leave dedup=3Dverify and disable the buf[0] assertion I get file corru= ption during a parallel build, a .o file is full of nulls. The exact file is unpredictable. If I set dedup=3Doff on the active filesystems everything is fine. No asse= rtion and no data loss. Tested on 15 and CURRENT. Sometimes the data that should be 0 appears to be ASCII text interpreted as= a 64 bit integer. --=20 You are receiving this mail because: You are the assignee for the bug.=