# cd /opt/ltp/testcases/bin # ./cfs_bandwidth01 -i 5 tst_test.c:1313: TINFO: Timeout per run is 0h 05m 00s tst_buffers.c:55: TINFO: Test is using guarded buffers cfs_bandwidth01.c:49: TINFO: Set 'worker1/cpu.max' = '3000 10000' cfs_bandwidth01.c:49: TINFO: Set 'worker2/cpu.max' = '2000 10000' cfs_bandwidth01.c:49: TINFO: Set 'worker3/cpu.max' = '3000 10000' cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 10000' cfs_bandwidth01.c:125: TPASS: Workers exited cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers [ 48.343143] ------------[ cut here ]------------ [ 48.343164] rq->tmp_alone_branch != &rq->leaf_cfs_rq_list [ 48.343172] WARNING: CPU: 24 PID: 4405 at kernel/sched/fair.c:401 unthrottle_cfs_rq+0x49c/0x560 [ 48.343196] Modules linked in: nf_tables nfnetlink tun bridge stp llc rfkill sunrpc pseries_rng xts vmx_crypto uio_pdrv_genirq uio sch_fq_codel ip_tables xfs libcrc32c sr_mod sd_mod cdrom t10_pi sg ibmvscsi ibmveth scsi_transport_srp dm_mirror dm_region_hash dm_log dm_mod fuse [ 48.343251] CPU: 24 PID: 4405 Comm: cfs_bandwidth01 Not tainted 5.13.0-rc7-dirty #4 [ 48.343261] NIP: c0000000001b88fc LR: c0000000001b88f8 CTR: c000000000723d10 [ 48.343269] REGS: c00000000fb13780 TRAP: 0700 Not tainted (5.13.0-rc7-dirty) [ 48.343278] MSR: 8000000000029033 CR: 48044224 XER: 00000005 [ 48.343295] CFAR: c00000000014d8a0 IRQMASK: 1 [ 48.343295] GPR00: c0000000001b88f8 c00000000fb13a20 c0000000029ab400 000000000000002d [ 48.343295] GPR04: 00000000fffeffff c00000000fb136e0 0000000000000027 c00000154f817e08 [ 48.343295] GPR08: 0000000000000023 0000000000000001 0000000000000027 c00000167f1d7fe8 [ 48.343295] GPR12: 0000000000004000 c00000154ffdc680 0000000000000000 0000000000000000 [ 48.343295] GPR16: c000000000fa6660 0000000000000001 0000000000000000 c0000000024e1cd8 [ 48.343295] GPR20: 0000000000000000 c00000000290a69a 0000000000000000 c0000000024e1cc0 [ 48.343295] GPR24: 0000000000000000 c0000000029f2140 c00000154f762380 0000000000000001 [ 48.343295] GPR28: 0000000000000001 0000000000000000 c00000154f762400 0000000000000000 [ 48.343388] NIP [c0000000001b88fc] unthrottle_cfs_rq+0x49c/0x560 [ 48.343397] LR [c0000000001b88f8] unthrottle_cfs_rq+0x498/0x560 [ 48.343406] Call Trace: [ 48.343410] [c00000000fb13a20] [c0000000001b88f8] unthrottle_cfs_rq+0x498/0x560 (unreliable) [ 48.343422] [c00000000fb13ac0] [c00000000019edb8] tg_set_cfs_bandwidth+0x2c8/0x470 [ 48.343433] [c00000000fb13bc0] [c000000000263874] cgroup_file_write+0x164/0x210 [ 48.343444] [c00000000fb13c20] [c00000000058cfac] kernfs_fop_write_iter+0x1cc/0x280 [ 48.343455] [c00000000fb13c70] [c00000000047024c] new_sync_write+0x14c/0x1d0 [ 48.343467] [c00000000fb13d10] [c000000000473844] vfs_write+0x224/0x330 [ 48.343476] [c00000000fb13d60] [c000000000473b2c] ksys_write+0x7c/0x140 [ 48.343485] [c00000000fb13db0] [c000000000030fb0] system_call_exception+0x150/0x2d0 [ 48.343495] [c00000000fb13e10] [c00000000000d45c] system_call_common+0xec/0x278 [ 48.343504] --- interrupt: c00 at 0x7fffaa67bd74 [ 48.343511] NIP: 00007fffaa67bd74 LR: 00007fffaa5f34c4 CTR: 0000000000000000 [ 48.343519] REGS: c00000000fb13e80 TRAP: 0c00 Not tainted (5.13.0-rc7-dirty) [ 48.343527] MSR: 800000000280f033 CR: 28002282 XER: 00000000 [ 48.343548] IRQMASK: 0 [ 48.343548] GPR00: 0000000000000004 00007fffcb534d60 00007fffaa777100 0000000000000010 [ 48.343548] GPR04: 00000000415623d0 0000000000000005 0000000000000010 00007fffcb534df8 [ 48.343548] GPR08: 0000000010028618 0000000000000000 0000000000000000 0000000000000000 [ 48.343548] GPR12: 0000000000000000 00007fffaa81a310 0000000000000000 0000000000000000 [ 48.343548] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 48.343548] GPR20: 0000000000000000 0000000000000000 0000000000000002 0000000000000000 [ 48.343548] GPR24: 0000000000000000 000000000000002b 0000000000000005 00000000415623d0 [ 48.343548] GPR28: 0000000000000005 00007fffcb534eb0 00000000415623d0 0000000000000005 [ 48.343634] NIP [00007fffaa67bd74] 0x7fffaa67bd74 [ 48.343640] LR [00007fffaa5f34c4] 0x7fffaa5f34c4 [ 48.343646] --- interrupt: c00 [ 48.343651] Instruction dump: [ 48.343656] 4bfffc74 3d22fff6 8929f2a9 2f890000 409efed4 39200001 3d42fff6 3c62fe60 [ 48.343672] 3863be08 992af2a9 4bf94f45 60000000 <0fe00000> 4bfffeb0 7f6407b4 7f43d378 [ 48.343687] ---[ end trace 61db91af8340603f ]--- cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 10000' cfs_bandwidth01.c:125: TPASS: Workers exited cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 10000' cfs_bandwidth01.c:125: TPASS: Workers exited cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 10000' cfs_bandwidth01.c:125: TPASS: Workers exited cfs_bandwidth01.c:113: TPASS: Scheduled bandwidth constrained workers cfs_bandwidth01.c:49: TINFO: Set 'level2/cpu.max' = '5000 10000' cfs_bandwidth01.c:125: TPASS: Workers exited tst_test.c:1349: TFAIL: Kernel is now tainted. HINT: You _MAY_ be missing kernel fixes, see: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=39f23ce07b93 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b34cb07dde7c https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fe61468b2cbc https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5ab297bab984 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6d4d22468dae Summary: passed 10 failed 1 broken 0 skipped 0 warnings 0