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Mon, 26 Aug 2024 19:46:50 +1000 (AEST) Date: Mon, 26 Aug 2024 19:46:48 +1000 From: Stephen Rothwell To: Andrew Morton Cc: Zhiguo Jiang , Linux Kernel Mailing List , Linux Next Mailing List Subject: linux-next: boot warning after merge of the mm tree Message-ID: <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_/679xP.HeWYbJhl=NG=mSkoa"; protocol="application/pgp-signature"; micalg=pgp-sha256 --Sig_/679xP.HeWYbJhl=NG=mSkoa Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi all, After merging the mm tree, today's linux-next boot test (powerpc pseries_le_defconfig) produced many warnings like this: 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-g133a683d26fd = #14 Hardware name: IBM pSeries (emulated by qemu) POWER8 (architected) 0x4d0200= 0xf000004 of:SLOF,HEAD pSeries NIP: c0000000004d0208 LR: c0000000004d0158 CTR: c00000000121d230 REGS: c0000000049bf550 TRAP: 0700 Not tainted (6.11.0-rc5-06732-g133a683= d26fd) MSR: 800000000282b033 CR: 44004222 XER= : 20000000 CFAR: c0000000004d019c IRQMASK: 0=20 GPR00: c0000000004d0158 c0000000049bf7f0 c00000000167b100 c000000008b5e2b0= =20 GPR04: c000000008b5e300 0000000000000006 c00000000445a108 0000000000000000= =20 GPR08: 0000000000000000 0000000000000001 ffffffffffffffff c0000000013550d8= =20 GPR12: 0000000000000000 c000000002b90000 0000000000000000 0000000000000000= =20 GPR16: 0000000000000000 c000000006cea000 c00000000405e3c0 c000000006556500= =20 GPR20: c000000006ce5000 c000000002a30308 0000000000000000 c000000008ba8398= =20 GPR24: c000000008ba8388 c000000008b60310 c000000002acb790 5deadbeef0000100= =20 GPR28: c000000008ba8398 5deadbeef0000122 c000000008ba8388 c000000008b60300= =20 NIP [c0000000004d0208] unlink_anon_vmas+0x23c/0x358 LR [c0000000004d0158] unlink_anon_vmas+0x18c/0x358 Call Trace: [c0000000049bf7f0] [c0000000004d00f0] unlink_anon_vmas+0x124/0x358 (unrelia= ble) [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-g133a683= d26fd) MSR: 800000000280f033 CR: 22002824 = XER: 00000000 IRQMASK: 0=20 GPR00: 000000000000000b 00007fffcec19410 00007fff98f79900 000001001dc20410= =20 GPR04: 000001001dc20440 000001001dc20450 0000000000000000 0000000000000000= =20 GPR08: 000001001dc20410 0000000000000000 0000000000000000 0000000000000000= =20 GPR12: 0000000000000000 00007fff98ffa9a0 0000000000000000 0000000000000000= =20 GPR16: 0000000000000000 0000000000000000 0000000000000000 00000000100b8fd0= =20 GPR20: 00000000100d03a2 00000000100b8f90 0000000000000000 0000000000000000= =20 GPR24: 0000000000000000 00000000100e77b8 00000000100b8700 00000000100d03e6= =20 GPR28: 000001001dc20450 00000000100d03e6 000001001dc20410 000001001dc20440= =20 NIP [00007fff98ea1638] 0x7fff98ea1638 LR [000000001004a12c] 0x1004a12c --- interrupt: c00 Code: fbbf0018 7fdff378 48033221 60000000 ebd90000 7c39e040 3bdefff0 418200= a8 e87f0008 e9430038 312affff 7d295110 <0b090000> e9430040 312affff 7d29511= 0=20 ---[ end trace 0000000000000000 ]--- mkdir (59) used greatest stack depth: 28176 bytes left Bisected to commit 1cd7eb306a54 ("vma remove the unneeded avc bound with non-CoWed folio") I have reverted that commit for today. --=20 Cheers, Stephen Rothwell --Sig_/679xP.HeWYbJhl=NG=mSkoa Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAmbMTwgACgkQAVBC80lX 0Gz7Hgf/SkPRykVm+r9mUMVwXAytiICg8PYztU5H3Pth1yvSI/EHdAgD2GkYIgj7 fsOOVkSuEQvmyZ17HY0hmD8jQQmvf5BfWc7hA2VX/kPdwv2OtQp9VXYog5anMxz3 Rw/PEcnSNyHEfsPSFG95AFj36FjWq06rR+g30BxDRjPu36DWNKCXuTLmQ7iq84dM KoXoWYOFZEnLFY02G69lLhrH355qlrWaPCzFdRSQL3MQ+PIG8QVQPSTZTvolBAq+ gCGcZAuE9dpLspZzL8VtleK/QM4vH2eishGzXMQBtB9RCOW7QC8WO4PZm6VJLU6I emvcjTW0eUxJ3esgEp6CRTZ8FYFGvw== =BD+p -----END PGP SIGNATURE----- --Sig_/679xP.HeWYbJhl=NG=mSkoa--