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Wed, 28 Aug 2024 09:36:03 +1000 (AEST) Date: Wed, 28 Aug 2024 09:36:02 +1000 From: Stephen Rothwell To: Andrew Morton Cc: Zhiguo Jiang , Linux Kernel Mailing List , Linux Next Mailing List Subject: Re: linux-next: boot warning after merge of the mm tree Message-ID: <20240828093602.1c08632f@canb.auug.org.au> In-Reply-To: <20240826194648.407fdf58@canb.auug.org.au> References: <20240826194648.407fdf58@canb.auug.org.au> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/EghZR7.qgz1=uFaO8E.E.Sm"; protocol="application/pgp-signature"; micalg=pgp-sha256 --Sig_/EghZR7.qgz1=uFaO8E.E.Sm Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi all, On Mon, 26 Aug 2024 19:46:48 +1000 Stephen Rothwell = wrote: > > After merging the mm tree, today's linux-next boot test (powerpc > pseries_le_defconfig) produced many warnings like this: >=20 > Run /init as init process > mount (55) used greatest stack depth: 28240 bytes left > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 1 at mm/rmap.c:443 unlink_anon_vmas+0x23c/0x358 > Modules linked in: > CPU: 0 UID: 0 PID: 1 Comm: init Not tainted 6.11.0-rc5-06732-g133a683d26f= d #14 > Hardware name: IBM pSeries (emulated by qemu) POWER8 (architected) 0x4d02= 00 0xf000004 of:SLOF,HEAD pSeries > NIP: c0000000004d0208 LR: c0000000004d0158 CTR: c00000000121d230 > REGS: c0000000049bf550 TRAP: 0700 Not tainted (6.11.0-rc5-06732-g133a6= 83d26fd) > MSR: 800000000282b033 CR: 44004222 X= ER: 20000000 > CFAR: c0000000004d019c IRQMASK: 0=20 > GPR00: c0000000004d0158 c0000000049bf7f0 c00000000167b100 c000000008b5e2b= 0=20 > GPR04: c000000008b5e300 0000000000000006 c00000000445a108 000000000000000= 0=20 > GPR08: 0000000000000000 0000000000000001 ffffffffffffffff c0000000013550d= 8=20 > GPR12: 0000000000000000 c000000002b90000 0000000000000000 000000000000000= 0=20 > GPR16: 0000000000000000 c000000006cea000 c00000000405e3c0 c00000000655650= 0=20 > GPR20: c000000006ce5000 c000000002a30308 0000000000000000 c000000008ba839= 8=20 > GPR24: c000000008ba8388 c000000008b60310 c000000002acb790 5deadbeef000010= 0=20 > GPR28: c000000008ba8398 5deadbeef0000122 c000000008ba8388 c000000008b6030= 0=20 > NIP [c0000000004d0208] unlink_anon_vmas+0x23c/0x358 > LR [c0000000004d0158] unlink_anon_vmas+0x18c/0x358 > Call Trace: > [c0000000049bf7f0] [c0000000004d00f0] unlink_anon_vmas+0x124/0x358 (unrel= iable) > [c0000000049bf860] [c0000000004a7eec] free_pgtables+0x1d0/0x368 > [c0000000049bf930] [c0000000004bce20] exit_mmap+0x1c0/0x578 > [c0000000049bfa70] [c000000000151f80] __mmput+0x60/0x1e0 > [c0000000049bfaa0] [c0000000005a6980] begin_new_exec+0x6e0/0xed0 > [c0000000049bfb20] [c0000000006405a8] load_elf_binary+0x460/0x1b68 > [c0000000049bfc70] [c0000000005a4088] bprm_execve+0x2ac/0x754 > [c0000000049bfd40] [c0000000005a5de0] do_execveat_common+0x188/0x250 > [c0000000049bfde0] [c0000000005a71c4] sys_execve+0x54/0x6c > [c0000000049bfe10] [c000000000030980] system_call_exception+0x120/0x310 > [c0000000049bfe50] [c00000000000d6a0] system_call_common+0x160/0x2c4 > --- interrupt: c00 at 0x7fff98ea1638 > NIP: 00007fff98ea1638 LR: 000000001004a12c CTR: 0000000000000000 > REGS: c0000000049bfe80 TRAP: 0c00 Not tainted (6.11.0-rc5-06732-g133a6= 83d26fd) > MSR: 800000000280f033 CR: 22002824= XER: 00000000 > IRQMASK: 0=20 > GPR00: 000000000000000b 00007fffcec19410 00007fff98f79900 000001001dc2041= 0=20 > GPR04: 000001001dc20440 000001001dc20450 0000000000000000 000000000000000= 0=20 > GPR08: 000001001dc20410 0000000000000000 0000000000000000 000000000000000= 0=20 > GPR12: 0000000000000000 00007fff98ffa9a0 0000000000000000 000000000000000= 0=20 > GPR16: 0000000000000000 0000000000000000 0000000000000000 00000000100b8fd= 0=20 > GPR20: 00000000100d03a2 00000000100b8f90 0000000000000000 000000000000000= 0=20 > GPR24: 0000000000000000 00000000100e77b8 00000000100b8700 00000000100d03e= 6=20 > GPR28: 000001001dc20450 00000000100d03e6 000001001dc20410 000001001dc2044= 0=20 > NIP [00007fff98ea1638] 0x7fff98ea1638 > LR [000000001004a12c] 0x1004a12c > --- interrupt: c00 > Code: fbbf0018 7fdff378 48033221 60000000 ebd90000 7c39e040 3bdefff0 4182= 00a8 e87f0008 e9430038 312affff 7d295110 <0b090000> e9430040 312affff 7d295= 110=20 > ---[ end trace 0000000000000000 ]--- > mkdir (59) used greatest stack depth: 28176 bytes left >=20 > Bisected to commit >=20 > 1cd7eb306a54 ("vma remove the unneeded avc bound with non-CoWed folio") >=20 > I have reverted that commit for today. I am still reverting that commit. --=20 Cheers, Stephen Rothwell --Sig_/EghZR7.qgz1=uFaO8E.E.Sm Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAmbOYuMACgkQAVBC80lX 0Gzwagf+Ob/x/WgJ23WG5A2KaUNrj55FTc8+5BCCMdmPG40bSRKWDG5C5HIhkNEB 5pux7qDgCFz7UTS1YKYaWgcewoiwe2828RcTzpW/+3l1+B5kFeNEDd18CuYxFEsC zCcot17PmPPxZo7bjxW/oCzwrY/vs7/puZNd9d9ddCiI909Zko4Z3/OBQ1xPY1eS HmdFxwyQfNEB180e5SAyIW9R19mG+ce23tZIpukiX2388O7i161Y3jasQwIWfdNs wnMqgkThCEWNYb/LNCZ3h7gGPGWJDoPUrfQY96+VHC3fkbpFBuTqrkFUVAlFe+P9 IoYBf9auScZ7kZF0tfx//lnZTHi9fQ== =dAak -----END PGP SIGNATURE----- --Sig_/EghZR7.qgz1=uFaO8E.E.Sm--