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Miller" , sparclinux@vger.kernel.org, Andreas Larsson , Rod Schnell , Sam James Date: Mon, 04 Aug 2025 09:48:50 +0200 In-Reply-To: References: <20230315051444.3229621-1-willy@infradead.org> <20230315051444.3229621-26-willy@infradead.org> <83931f05-a613-4972-be76-80bc695915e4@oracle.com> <75cbab0cdab084795422335c0e0d69c6f57b468c.camel@physik.fu-berlin.de> <76c45021481cfe1aaa9fe2cfcd2287ac6c8d4504.camel@physik.fu-berlin.de> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.56.2 MIME-Version: 1.0 X-Original-Sender: glaubitz@physik.fu-berlin.de X-Originating-IP: 87.189.150.208 X-ZEDAT-Hint: PO X-Rspam-User: X-Rspamd-Queue-Id: 4CF4C100004 X-Rspamd-Server: rspam06 X-Stat-Signature: grupu6buw8f9zrjijze57tc9jhrmnnpt X-HE-Tag: 1754293734-197030 X-HE-Meta: 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 BrBc76GB 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi, On Mon, 2025-08-04 at 08:58 +0200, John Paul Adrian Glaubitz wrote: > On Mon, 2025-08-04 at 07:36 +0200, John Paul Adrian Glaubitz wrote: > > On Mon, 2025-08-04 at 07:12 +0200, John Paul Adrian Glaubitz wrote: > > > On Sun, 2025-08-03 at 12:08 -0700, Anthony Yznaga wrote: > > > > There was a follow-on fix that addressed a bug with this patch: > > > >=20 > > > > f4b4f3ec1a31 sparc64: add missing initialization of folio in tlb_ba= tch_add() > > >=20 > > > Indeed I just tried v6.6 which has this patch and added your sun4u fi= x and it > > > seems to be stable. I was sure I saw problems even with v6.16 though. > > >=20 > > > Let me run more tests. > >=20 > > I'm seeing another crash on v6.16 on sun4u even with your patch applied= : > >=20 > > [ 456.443492] kernel BUG at fs/ext4/inode.c:1174! > > [ 456.503059] \|/ ____ \|/ > > [ 456.503059] "@'/ .. \`@" > > [ 456.503059] /_| \__/ |_\ > > [ 456.503059] \__U_/ > > [ 456.696513] apt-get(1217): Kernel bad sw trap 5 [#1] > > [ 456.761698] CPU: 0 UID: 0 PID: 1217 Comm: apt-get Not tainted 6.16.0= + #24 VOLUNTARY=20 > > [ 456.863502] TSTATE: 0000000011001601 TPC: 0000000010309250 TNPC: 000= 0000010309254 Y: 00000000 Not tainted > > [ 456.992850] TPC: > > [ 457.067500] g0: 0000000000000000 g1: 0000000000000001 g2: 0000000000= 000000 g3: 0000000000000000 > > [ 457.181869] g4: fff00000141d5c80 g5: 0000000000000008 g6: fff000000b= e24000 g7: 0000000000000001 > > [ 457.296245] o0: 00000000103944b0 o1: 0000000000000496 o2: ffffffffff= ffffbf o3: 0000000000101cca > > [ 457.410618] o4: 0000000000000000 o5: 0000000000000000 sp: fff000000b= e26fd1 ret_pc: 0000000010309248 > > [ 457.529571] RPC: > > [ 457.604020] l0: fff000003def26e0 l1: 0000000000113cca l2: fff000003d= ef2578 l3: 0000000000000002 > > [ 457.718394] l4: 0000000000000000 l5: 0000000000080000 l6: 0000000000= 012000 l7: 0000000000000001 > > [ 457.832770] i0: 0000000000000000 i1: 000c00000026b500 i2: 0000000000= 001000 i3: 0000000000082000 > > [ 457.947146] i4: 00000000103034a0 i5: 0000000000000000 i6: fff000000b= e270c1 i7: 000000001030c8dc > > [ 458.061528] I7: > > [ 458.131389] Call Trace: > > [ 458.163408] [<000000001030c8dc>] ext4_da_write_begin+0x1bc/0x340 [ex= t4] > > [ 458.250447] [<0000000000674230>] generic_perform_write+0x90/0x240 > > [ 458.330606] [<00000000102f50b4>] ext4_buffered_write_iter+0x54/0x120= [ext4] > > [ 458.422214] [<00000000102f5624>] ext4_file_write_iter+0x3e4/0x780 [e= xt4] > > [ 458.510388] [<0000000000749cc4>] vfs_write+0x2c4/0x3e0 > > [ 458.577867] [<0000000000749f4c>] ksys_write+0x4c/0xe0 > > [ 458.644203] [<0000000000749ff4>] sys_write+0x14/0x40 > > [ 458.709397] [<0000000000406174>] linux_sparc_syscall+0x34/0x44 > > [ 458.786048] Disabling lock debugging due to kernel taint > > [ 458.855904] Caller[000000001030c8dc]: ext4_da_write_begin+0x1bc/0x34= 0 [ext4] > > [ 458.948653] Caller[0000000000674230]: generic_perform_write+0x90/0x2= 40 > > [ 459.034430] Caller[00000000102f50b4]: ext4_buffered_write_iter+0x54/= 0x120 [ext4] > > [ 459.131761] Caller[00000000102f5624]: ext4_file_write_iter+0x3e4/0x7= 80 [ext4] > > [ 459.225648] Caller[0000000000749cc4]: vfs_write+0x2c4/0x3e0 > > [ 459.298846] Caller[0000000000749f4c]: ksys_write+0x4c/0xe0 > > [ 459.370900] Caller[0000000000749ff4]: sys_write+0x14/0x40 > > [ 459.441810] Caller[0000000000406174]: linux_sparc_syscall+0x34/0x44 > > [ 459.524168] Caller[0000000000000000]: 0x0 > > [ 459.576772] Instruction DUMP: > > [ 459.576776] 11040e51=20 > > [ 459.615662] 7c04b816=20 > > [ 459.646541] 901220b0=20 > > [ 459.677418] <91d02005> > > [ 459.708302] 9735a000=20 > > [ 459.739181] 95352000=20 > > [ 459.770076] d25fa7cf=20 > > [ 459.800945] 7fffe818=20 > > [ 459.831825] 90100019=20 > > [ 459.862706]=20 > > [ 459.941500] systemd[1]: Failed to open /dev/pts device, ignoring: In= appropriate ioctl for device > > [ 460.063831] systemd[1]: rsyslog.service: Main process exited, code= =3Dkilled, status=3D6/ABRT > > [ 460.170962] systemd[1]: rsyslog.service: Failed with result 'signal'= . > > [ 460.267153] systemd[1]: systemd-journald.service: Scheduled restart = job, restart counter is at 1. > > [ 460.388605] systemd[1]: rsyslog.service: Scheduled restart job, rest= art counter is at 1. > > [ 460.517346] systemd[1]: Starting rsyslog.service - System Logging Se= rvice... > > [ 460.618299] systemd[1]: Starting systemd-journald.service - Journal = Service... > > [ 460.895645] systemd-journald[1237]: Collecting audit messages is dis= abled. > > [ 461.048068] systemd[1]: Failed to open /dev/pts device, ignoring: In= appropriate ioctl for device > > [ 461.202783] systemd-journald[1237]: File /var/log/journal/9ac90e257b= 3e423284cfc21a00cbeeb8/system.journal corrupted or uncleanly shut down, ren= aming and replacing. > > [ 461.456867] systemd[1]: Started rsyslog.service - System Logging Ser= vice. > > [ 461.616651] systemd-journald[1237]: Time jumped backwards, rotating. > > [ 461.773305] systemd-journald[1237]: Failed to read journal file /var= /log/journal/9ac90e257b3e423284cfc21a00cbeeb8/user-1002.journal for rotatio= n, trying to move it out of the way: Device or > > resource busy > > [ 462.065725] systemd[1]: Started systemd-journald.service - Journal S= ervice. > > [ 462.159895] systemd-journald[1237]: Time jumped backwards, rotating. > > [ 519.719624] kernel BUG at fs/ext4/inode.c:1174! > > [ 519.779143] \|/ ____ \|/ > > [ 519.779143] "@'/ .. \`@" > > [ 519.779143] /_| \__/ |_\ > > [ 519.779143] \__U_/ > > [ 519.972586] apt(1249): Kernel bad sw trap 5 [#2] > > [ 520.033239] CPU: 0 UID: 0 PID: 1249 Comm: apt Tainted: G D = 6.16.0+ #24 VOLUNTARY=20 > > [ 520.151048] Tainted: [D]=3DDIE > > [ 520.188797] TSTATE: 0000000011001603 TPC: 0000000010309250 TNPC: 000= 0000010309254 Y: 00000000 Tainted: G D =20 > > [ 520.338725] TPC: > > [ 520.413282] g0: 0000000000000000 g1: 0000000000000001 g2: 0000000000= 000000 g3: 0000000000000000 > > [ 520.527655] g4: fff00000141d40c0 g5: 000000000000000b g6: fff000000a= 818000 g7: 0000000000000001 > > [ 520.642031] o0: 00000000103944b0 o1: 0000000000000496 o2: ffffffffff= fffcc0 o3: 0000000000101cca > > [ 520.756408] o4: 0000000000000004 o5: 0000000000000000 sp: fff000000a= 81afd1 ret_pc: 0000000010309248 > > [ 520.875350] RPC: > > [ 520.949799] l0: fff000023439af00 l1: 0000000000113cca l2: fff0000234= 39ad98 l3: 0000000000000002 > > [ 521.064174] l4: 0000000000000000 l5: 0000000000080000 l6: 0000000000= 012000 l7: 0000000000000001 > > [ 521.178547] i0: 0000000000000000 i1: 000c000000164a00 i2: 0000000000= 001fc0 i3: 0000000000680000 > > [ 521.292923] i4: 00000000103034a0 i5: 0000000000000000 i6: fff000000a= 81b0c1 i7: 000000001030c8dc > > [ 521.407297] I7: > > [ 521.477195] Call Trace: > > [ 521.509295] [<000000001030c8dc>] ext4_da_write_begin+0x1bc/0x340 [ex= t4] > > [ 521.596330] [<0000000000674230>] generic_perform_write+0x90/0x240 > > [ 521.676495] [<00000000102f50b4>] ext4_buffered_write_iter+0x54/0x120= [ext4] > > [ 521.768196] [<00000000102f5624>] ext4_file_write_iter+0x3e4/0x780 [e= xt4] > > [ 521.856381] [<0000000000749cc4>] vfs_write+0x2c4/0x3e0 > > [ 521.923957] [<0000000000749f4c>] ksys_write+0x4c/0xe0 > > [ 521.990294] [<0000000000749ff4>] sys_write+0x14/0x40 > > [ 522.055486] [<0000000000406174>] linux_sparc_syscall+0x34/0x44 > > [ 522.132122] Caller[000000001030c8dc]: ext4_da_write_begin+0x1bc/0x34= 0 [ext4] > > [ 522.224873] Caller[0000000000674230]: generic_perform_write+0x90/0x2= 40 > > [ 522.310649] Caller[00000000102f50b4]: ext4_buffered_write_iter+0x54/= 0x120 [ext4] > > [ 522.407974] Caller[00000000102f5624]: ext4_file_write_iter+0x3e4/0x7= 80 [ext4] > > [ 522.501864] Caller[0000000000749cc4]: vfs_write+0x2c4/0x3e0 > > [ 522.575062] Caller[0000000000749f4c]: ksys_write+0x4c/0xe0 > > [ 522.647118] Caller[0000000000749ff4]: sys_write+0x14/0x40 > > [ 522.718031] Caller[0000000000406174]: linux_sparc_syscall+0x34/0x44 > > [ 522.800380] Caller[0000000000000000]: 0x0 > > [ 522.852991] Instruction DUMP: > > [ 522.852994] 11040e51=20 > > [ 522.891878] 7c04b816=20 > > [ 522.922760] 901220b0=20 > > [ 522.953638] <91d02005> > > [ 522.984521] 9735a000=20 > > [ 523.015401] 95352000=20 > > [ 523.046284] d25fa7cf=20 > > [ 523.077163] 7fffe818=20 > > [ 523.108109] 90100019=20 > > [ 523.139044] > >=20 > > I'll try to bisect this one later this week. >=20 > OK, so v6.8 is fine while v6.9 crashes: >=20 > [ 39.788224] Unable to handle kernel NULL pointer dereference > [ 39.862657] tsk->{mm,active_mm}->context =3D 000000000000004b > [ 39.935941] tsk->{mm,active_mm}->pgd =3D fff000000aa98000 > [ 40.004566] \|/ ____ \|/ > [ 40.004566] "@'/ .. \`@" > [ 40.004566] /_| \__/ |_\ > [ 40.004566] \__U_/ > [ 40.197871] (udev-worker)(88): Oops [#1] > [ 40.249329] CPU: 0 PID: 88 Comm: (udev-worker) Tainted: P O = 6.9.0+ #28 > [ 40.353415] TSTATE: 0000004411001605 TPC: 0000000000df092c TNPC: 00000= 00000df0930 Y: 00000000 Tainted: P O =20 > [ 40.502105] TPC: > [ 40.547844] g0: fff000000a3171a1 g1: 0000000000000000 g2: 000000000000= 0000 g3: 0000000000000001 > [ 40.662224] g4: fff000000aa4dac0 g5: 0000000010000233 g6: fff000000a31= 4000 g7: 0000000000000000 > [ 40.776599] o0: 0000000000000010 o1: 0000000000000010 o2: 000000000101= 0101 o3: 0000000080808080 > [ 40.890974] o4: 0000000001010000 o5: 0000000000000000 sp: fff000000a31= 7201 ret_pc: 00000000004d4b08 > [ 41.009924] RPC: > [ 41.094557] l0: fff0000100032f40 l1: 0000000000000000 l2: 000000000000= 0000 l3: 0000000000000000 > [ 41.208936] l4: 0000000000000000 l5: 0000000000000000 l6: 000000000000= 0000 l7: 0000000000000000 > [ 41.323311] i0: 00000001000256d8 i1: 0000000001143000 i2: 000000000114= 3300 i3: 000000000000000b > [ 41.437686] i4: 0000000000000010 i5: fffffffffffffff8 i6: fff000000a31= 72e1 i7: 00000000004d63f0 > [ 41.552062] I7: > [ 41.605811] Call Trace: > [ 41.637838] [<00000000004d63f0>] load_module+0x550/0x1f00 > [ 41.708752] [<00000000004d7fac>] init_module_from_file+0x6c/0xa0 > [ 41.787670] [<00000000004d81c8>] sys_finit_module+0x188/0x280 > [ 41.863158] [<0000000000406174>] linux_sparc_syscall+0x34/0x44 > [ 41.939790] Caller[00000000004d63f0]: load_module+0x550/0x1f00 > [ 42.016423] Caller[00000000004d7fac]: init_module_from_file+0x6c/0xa0 > [ 42.101059] Caller[00000000004d81c8]: sys_finit_module+0x188/0x280 > [ 42.182266] Caller[0000000000406174]: linux_sparc_syscall+0x34/0x44 > [ 42.264614] Caller[fff000010480e2fc]: 0xfff000010480e2fc > [ 42.334384] Instruction DUMP: > [ 42.334387] 96132080=20 > [ 42.373269] 19004040=20 > [ 42.404151] 94132101=20 > [ 42.435030] > [ 42.465914] 9823400a=20 > [ 42.496793] 808b000b=20 > [ 42.527674] 024ffffd=20 > [ 42.558556] 90022004=20 > [ 42.589437] 8f336018=20 > [ 42.620318] >=20 > So, the regression was introduced with v6.9. Will bisect this later this = week. Hmm, I just ran into another crash on v6.8. The machine didn't crash though= : [ 489.263666] Unable to handle kernel paging request at virtual address 00= 0c000002400000 [ 489.367912] tsk->{mm,active_mm}->context =3D 00000000000013b2 [ 489.441150] tsk->{mm,active_mm}->pgd =3D fff000000af04000 [ 489.509872] \|/ ____ \|/ "@'/ .. \`@" /_| \__/ |_\ \__U_/ [ 489.703156] sshd-session(3671): Oops [#1] [ 489.755758] CPU: 0 PID: 3671 Comm: sshd-session Not tainted 6.8.0+ #27 [ 489.841544] TSTATE: 0000000811001600 TPC: 000000000065d620 TNPC: 0000000= 00065d624 Y: 00000000 Not tainted [ 489.970796] TPC: [ 490.030362] g0: fff000000a939360 g1: 0000000000008800 g2: ffffffffffffff= ff g3: ffffffffffffffff [ 490.144748] g4: fff0000000d4a100 g5: 0000000002ad4a68 g6: fff000000a6dc0= 00 g7: 0000010000000000 [ 490.259118] o0: 000c0000024005a0 o1: fff00001018a4000 o2: 00000001000282= 90 o3: 0000000100028290 [ 490.373493] o4: fff0000001afe71c o5: 0000000001099c00 sp: fff000000a6dee= b1 ret_pc: 000000000065d53c [ 490.492447] RPC: [ 490.551915] l0: fff00001018f4000 l1: 0000000100028290 l2: fff000000a6df9= 68 l3: fff00001018a4000 [ 490.666292] l4: fff00000070a25a0 l5: fff000000a6dfaa8 l6: 00000000000000= 01 l7: 00000000011605a8 [ 490.780668] i0: fff000000a9b0900 i1: fff00001018a6000 i2: fff0000000f990= 18 i3: fff0000004308290 [ 490.895045] i4: fff00001018f4000 i5: 000c0000024005a0 i6: fff000000a6def= f1 i7: 000000000065dcd8 [ 491.009418] I7: [ 491.079183] Call Trace: [ 491.111206] [<000000000065dcd8>] unmap_single_vma.constprop.0+0x78/0xe0 [ 491.198136] [<000000000065dd9c>] unmap_vmas+0x5c/0x1a0 [ 491.265615] [<000000000066a2a4>] exit_mmap+0xc4/0x440 [ 491.331950] [<0000000000463d44>] __mmput+0x44/0x140 [ 491.396003] [<0000000000463e74>] mmput+0x34/0x60 [ 491.456618] [<000000000046a444>] do_exit+0x284/0xaa0 [ 491.521816] [<000000000046ae24>] do_group_exit+0x24/0xa0 [ 491.591584] [<000000000046aebc>] sys_exit_group+0x1c/0x40 [ 491.662496] [<0000000000406174>] linux_sparc_syscall+0x34/0x44 [ 491.739127] Disabling lock debugging due to kernel taint [ 491.808896] Caller[000000000065dcd8]: unmap_single_vma.constprop.0+0x78/= 0xe0 [ 491.901543] Caller[000000000065dd9c]: unmap_vmas+0x5c/0x1a0 [ 491.974740] Caller[000000000066a2a4]: exit_mmap+0xc4/0x440 [ 492.046795] Caller[0000000000463d44]: __mmput+0x44/0x140 [ 492.116564] Caller[0000000000463e74]: mmput+0x34/0x60 [ 492.182901] Caller[000000000046a444]: do_exit+0x284/0xaa0 [ 492.253815] Caller[000000000046ae24]: do_group_exit+0x24/0xa0 [ 492.329301] Caller[000000000046aebc]: sys_exit_group+0x1c/0x40 [ 492.405935] Caller[0000000000406174]: linux_sparc_syscall+0x34/0x44 [ 492.488282] Caller[fff0000102ad4a74]: 0xfff0000102ad4a74 [ 492.558054] Instruction DUMP: [ 492.558057] c6756010=20 [ 492.596937] 02ff7fd9=20 [ 492.627825] c2356018=20 [ 492.658702] [ 492.689581] 8610001d=20 [ 492.720460] 84086001=20 [ 492.751343] 82007fff=20 [ 492.782223] 87789401=20 [ 492.813105] c258e018=20 [ 492.894311] Fixing recursive fault but reboot is needed! Adrian --=20 .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913