+Jens for awareness because of Subject: [PATCHSET 0/2] Turn single segment imports into ITER_UBUF https://lore.kernel.org/linux-fsdevel/20230324204443.45950-1-axboe@xxxxxxxxx which seems like a likely candidate. On Mon, Mar 27, 2023 at 11:47:22AM +0530, Naresh Kamboju wrote: > Following LTP syscalls test cases on arm64 FVP, x86_64 and i386. > > Regressions found on i386 x86 and fvp-aemva: > > - ltp-syscalls/preadv202_64 > - ltp-syscalls/process_vm_writev01 > - ltp-syscalls/pwritev02 > - ltp-syscalls/pwritev02_64 > - ltp-syscalls/preadv02_64 > - ltp-syscalls/preadv202 > - ltp-syscalls/recvmsg01 > - ltp-syscalls/preadv02 > - ltp-syscalls/process_vm_readv01 > - ltp-syscalls/readv02 > > > Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> > > test crash log: > -------------- > [ 606.816186] BUG: unable to handle page fault for address: 000000000042da60 > [ 606.824151] #PF: supervisor read access in kernel mode > [ 606.829296] #PF: error_code(0x0001) - permissions violation > [ 606.834869] PGD 80000001373fb067 P4D 80000001373fb067 PUD 113a7b067 > PMD 1085d5067 PTE 8000000119372067 > [ 606.844200] Oops: 0001 [#3] PREEMPT SMP KASAN PTI > [ 606.848908] CPU: 2 PID: 100812 Comm: preadv202 Tainted: G B D W > 6.3.0-rc3-next-20230327 #1 > [ 606.858206] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS > 2.2 05/23/2018 > [ 606.865599] RIP: 0010:do_iter_read+0x241/0x340 > [ 606.870054] Code: 00 00 00 48 8b 7d a8 e8 4d af fb ff 48 8b 45 d0 > 4c 8b 78 28 48 8b 7d 98 e8 3c af fb ff 49 8b 5c 24 18 48 89 df e8 2f > af fb ff <48> 8b 03 48 8b 7d a0 48 89 45 c0 e8 1f af fb ff 48 8d 7b 08 > 4d 8b > [ 606.888807] RSP: 0018:ffff8881080b7c38 EFLAGS: 00010286 > [ 606.894034] RAX: 0000000000000000 RBX: 000000000042da60 RCX: ffffffff87a89ce1 > [ 606.901174] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 000000000042da60 > [ 606.908333] RBP: ffff8881080b7cb0 R08: 0000000000000000 R09: ffff888101adf457 > [ 606.915466] R10: ffffed102035be8a R11: 0000000000000001 R12: ffff8881080b7d10 > [ 606.922607] R13: 0000000000000000 R14: 0000000000000040 R15: ffffffff8955a380 > [ 606.929739] FS: 00007f7d8b9a6740(0000) GS:ffff888230900000(0000) > knlGS:0000000000000000 > [ 606.937834] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 606.943589] CR2: 000000000042da60 CR3: 00000001139a0006 CR4: 00000000003706e0 > [ 606.950730] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 606.957861] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > [ 606.964995] Call Trace: > [ 606.967447] <TASK> > [ 606.969558] vfs_readv+0xce/0x140 > [ 606.972882] ? __pfx_vfs_readv+0x10/0x10 > [ 606.976817] ? do_send_sig_info+0x9d/0xd0 > [ 606.980839] ? preempt_count_sub+0x50/0x80 > [ 606.984945] ? _raw_spin_unlock_irqrestore+0x37/0x60 > [ 606.989919] ? do_send_sig_info+0x9d/0xd0 > [ 606.993941] ? __rcu_read_unlock+0x3b/0x80 > [ 606.998050] ? __kasan_check_read+0x15/0x20 > [ 607.002245] ? __fget_light+0x1d0/0x210 > [ 607.006091] ? kill_something_info+0x1d3/0x200 > [ 607.010538] do_preadv+0x132/0x190 > [ 607.013952] ? __pfx_do_preadv+0x10/0x10 > [ 607.017880] __x64_sys_preadv2+0x71/0xa0 > [ 607.021815] do_syscall_64+0x3c/0x90 > [ 607.025401] entry_SYSCALL_64_after_hwframe+0x72/0xdc > [ 607.030461] RIP: 0033:0x7f7d8baaac8c > [ 607.034051] Code: 49 89 cc 55 89 fd 53 44 89 c3 48 83 ec 18 64 8b > 04 25 18 00 00 00 85 c0 75 7c 45 89 c1 49 89 ca 45 31 c0 b8 47 01 00 > 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 c8 00 00 00 48 85 c0 79 49 48 8b 0d > 5c e1 > [ 607.052804] RSP: 002b:00007ffdd4ce73c0 EFLAGS: 00000246 ORIG_RAX: > 0000000000000147 > [ 607.060380] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7d8baaac8c > [ 607.067520] RDX: 0000000000000001 RSI: 000000000042d670 RDI: 0000000000000005 > [ 607.074660] RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000 > [ 607.081795] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > [ 607.088934] R13: 000000000042d670 R14: 0000000000000000 R15: 0000000000000001 > [ 607.096070] </TASK> > [ 607.098261] Modules linked in: tun x86_pkg_temp_thermal > [ 607.103495] CR2: 000000000042da60 > [ 607.106815] ---[ end trace 0000000000000000 ]--- > [ 607.111442] RIP: 0010:do_iter_read+0x241/0x340 > [ 607.115897] Code: 00 00 00 48 8b 7d a8 e8 4d af fb ff 48 8b 45 d0 > 4c 8b 78 28 48 8b 7d 98 e8 3c af fb ff 49 8b 5c 24 18 48 89 df e8 2f > af fb ff <48> 8b 03 48 8b 7d a0 48 89 45 c0 e8 1f af fb ff 48 8d 7b 08 > 4d 8b > [ 607.134652] RSP: 0018:ffff88810713fc78 EFLAGS: 00010286 > [ 607.139885] RAX: 0000000000000001 RBX: 000000000042da60 RCX: ffffffff876b219e > [ 607.147026] RDX: fffffbfff1665005 RSI: 0000000000000008 RDI: ffffffff8b328020 > [ 607.154191] RBP: ffff88810713fcf0 R08: 0000000000000001 R09: ffffffff8b328027 > [ 607.161325] R10: fffffbfff1665004 R11: 0000000000000001 R12: ffff88810713fd50 > [ 607.168459] R13: 0000000000000000 R14: 0000000000000040 R15: ffffffff8955a380 > [ 607.175593] FS: 00007f7d8b9a6740(0000) GS:ffff888230900000(0000) > knlGS:0000000000000000 > [ 607.183686] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 607.189432] CR2: 000000000042da60 CR3: 00000001139a0006 CR4: 00000000003706e0 > [ 607.196572] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 607.203706] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > [ 607.210840] note: preadv202[100812] exited with irqs disabled > adv2() read 32 bytes with content 'b' expectedly > preadv201.c:90: TPASS: preadv2() read 64 bytes with content 'a' expectedly > preadv201.c:90: TPASS: preadv2() read 64 bytes with content 'a' expectedly > preadv201.c:90: TPASS: preadv2() read 64 bytes with co[ 607.237557] > BUG: unable to handle page fault for address: 000000000042da60 > [ 607.245714] #PF: supervisor read access in kernel mode > [ 607.250859] #PF: error_code(0x0001) - permissions violation > [ 607.256431] PGD 8000000100dde067 P4D 8000000100dde067 PUD 10c184067 > PMD 137231067 PTE 8000000116a0d067 > [ 607.265758] Oops: 0001 [#4] PREEMPT SMP KASAN PTI > [ 607.270501] CPU: 0 PID: 100814 Comm: preadv202_64 Tainted: G B D > W 6.3.0-rc3-next-20230327 #1 > [ 607.280094] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS > 2.2 05/23/2018 > [ 607.287519] RIP: 0010:do_iter_read+0x241/0x340 > [ 607.292000] Code: 00 00 00 48 8b 7d a8 e8 4d af fb ff 48 8b 45 d0 > 4c 8b 78 28 48 8b 7d 98 e8 3c af fb ff 49 8b 5c 24 18 48 89 df e8 2f > af fb ff <48> 8b 03 48 8b 7d a0 48 89 45 c0 e8 1f af fb ff 48 8d 7b 08 > 4d 8b > [ 607.310781] RSP: 0018:ffff88810aabfc38 EFLAGS: 00010286 > [ 607.316042] RAX: 0000000000000000 RBX: 000000000042da60 RCX: ffffffff87a89ce1 > [ 607.323206] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 000000000042da60 > [ 607.330366] RBP: ffff88810aabfcb0 R08: 0000000000000000 R09: ffff888101adf457 > [ 607.337525] R10: ffffed102035be8a R11: 0000000000000001 R12: ffff88810aabfd10 > [ 607.344692] R13: 0000000000000000 R14: 0000000000000040 R15: ffffffff8955a380 > [ 607.351850] FS: 00007f3989bcd740(0000) GS:ffff888230800000(0000) > knlGS:0000000000000000 > [ 607.359973] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 607.365752] CR2: 000000000042da60 CR3: 0000000111308001 CR4: 00000000003706f0 > [ 607.372919] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 607.380079] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > [ 607.387238] Call Trace: > [ 607.389714] <TASK> > [ 607.391824] vfs_readv+0xce/0x140 > [ 607.395174] ? __pfx_vfs_readv+0x10/0x10 > [ 607.399172] ? do_send_sig_info+0x9d/0xd0 > [ 607.403237] ? preempt_count_sub+0x50/0x80 > [ 607.407368] ? _raw_spin_unlock_irqrestore+0x37/0x60 > [ 607.412371] ? do_send_sig_info+0x9d/0xd0 > [ 607.416426] ? __rcu_read_unlock+0x3b/0x80 > [ 607.420560] ? __kasan_check_read+0x15/0x20 > [ 607.424780] ? __fget_light+0x1d0/0x210 > [ 607.428618] ? kill_something_info+0x1d3/0x200 > [ 607.433102] do_preadv+0x132/0x190 > [ 607.436533] ? __pfx_do_preadv+0x10/0x10 > [ 607.440485] __x64_sys_preadv2+0x71/0xa0 > [ 607.444444] do_syscall_64+0x3c/0x90 > [ 607.448032] entry_SYSCALL_64_after_hwframe+0x72/0xdc > [ 607.453112] RIP: 0033:0x7f3989cd1c8c > [ 607.456700] Code: 49 89 cc 55 89 fd 53 44 89 c3 48 83 ec 18 64 8b > 04 25 18 00 00 00 85 c0 75 7c 45 89 c1 49 89 ca 45 31 c0 b8 47 01 00 > 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 c8 00 00 00 48 85 c0 79 49 48 8b 0d > 5c e1 > [ 607.475479] RSP: 002b:00007ffdfa87c790 EFLAGS: 00000246 ORIG_RAX: > 0000000000000147 > [ 607.483054] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3989cd1c8c > [ 607.490195] RDX: 0000000000000001 RSI: 000000000042d670 RDI: 0000000000000005 > [ 607.497397] RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000 > [ 607.504562] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > [ 607.511723] R13: 000000000042d670 R14: 0000000000000000 R15: 0000000000000001 > [ 607.518884] </TASK> > [ 607.521107] Modules linked in: tun x86_pkg_temp_thermal > [ 607.526396] CR2: 000000000042da60 > [ 607.529742] ---[ end trace 0000000000000000 ]--- > [ 607.534394] RIP: 0010:do_iter_read+0x241/0x340 > [ 607.538876] Code: 00 00 00 48 8b 7d a8 e8 4d af fb ff 48 8b 45 d0 > 4c 8b 78 28 48 8b 7d 98 e8 3c af fb ff 49 8b 5c 24 18 48 89 df e8 2f > af fb ff <48> 8b 03 48 8b 7d a0 48 89 45 c0 e8 1f af fb ff 48 8d 7b 08 > 4d 8b > [ 607.557656] RSP: 0018:ffff88810713fc78 EFLAGS: 00010286 > [ 607.562915] RAX: 0000000000000001 RBX: 000000000042da60 RCX: ffffffff876b219e > [ 607.570082] RDX: fffffbfff1665005 RSI: 0000000000000008 RDI: ffffffff8b328020 > [ 607.577250] RBP: ffff88810713fcf0 R08: 0000000000000001 R09: ffffffff8b328027 > [ 607.584418] R10: fffffbfff1665004 R11: 0000000000000001 R12: ffff88810713fd50 > [ 607.591576] R13: 0000000000000000 R14: 0000000000000040 R15: ffffffff8955a380 > [ 607.598733] FS: 00007f3989bcd740(0000) GS:ffff888230800000(0000) > knlGS:0000000000000000 > [ 607.606847] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 607.612602] CR2: 000000000042da60 CR3: 0000000111308001 CR4: 00000000003706f0 > [ 607.619766] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 607.626928] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > [ 607.634095] note: preadv202_64[100814] exited with irqs disabled > > > Test log links, > --------- > - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230327/testrun/15902655/suite/ > - ltp-syscalls/test/preadv202/log > - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230327/testrun/15899127/suite/ > - ltp-syscalls/test/preadv202/history/ > > metadata: > git_ref: master > git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next > git_sha: 011eb7443621f49ca1e8cdf9c74c215f25019118 > git_describe: next-20230327 > kernel_version: 6.3.0-rc3 > kernel-config: > https://storage.tuxsuite.com/public/linaro/lkft/builds/2NZpQvNrdOzi9UUukh8f6b4TmOv/config > build-url: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next/-/pipelines/818444740 > artifact-location: > https://storage.tuxsuite.com/public/linaro/lkft/builds/2NZpQvNrdOzi9UUukh8f6b4TmOv > toolchain: gcc-11 > > > > -- > Linaro LKFT > https://lkft.linaro.org
