The below WARNING displays on the system console multiple times during shutdown. It does not appear to block shutdown processing. This is on 6.4-rc4 with the mlx5_irqs_request_vectors() fix applied. [ 270.146851][ T1] WARNING: CPU: 7 PID: 1 at kernel/irq/manage.c:2034 free_irq+0x59/0x70 [ 270.155022][ T1] Modules linked in: rpcsec_gss_krb5 nfsv4 dns_resolver nfs rpcrdma rdma_cm iw_cm qrtr rfkill ib_umad ib_ipoib ib_cm joydev mlx5_ib kvm_intel ib_uverbs kvm iTCO_wdt intel_pmc_bxt intel_rapl_msr iTCO_vendor_support ib_core intel_rapl_common sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp mei_me irqbypass intel_uncore ipmi_ssif rapl intel_cstate acpi_ipmi i2c_i801 mei i2c_smbus lpc_ich ioatdma ipmi_si wmi ipmi_devintf ipmi_msghandler acpi_pad acpi_power_meter nfsd auth_rpcgss nfs_acl lockd grace fuse sunrpc zram xfs ast mlx5_core drm_kms_helper syscopyarea sysfillrect sysimgblt drm_shmem_helper drm igb crct10dif_pclmul crc32c_intel ghash_clmulni_intel crc32_pclmul mlxfw dca i2c_algo_bit scsi_dh_rdac scsi_dh_emc scsi_dh_alua dm_multipath [ 270.222180][ T1] CPU: 7 PID: 1 Comm: systemd-shutdow Tainted: G S W 6.4.0-rc4-00005-gcb97c84405b4 #12 b7995b33d89b756c6301c99963dc9aea845bd15c [ 270.236418][ T1] Hardware name: Supermicro SYS-6028R-T/X10DRi, BIOS 1.1a 10/16/2015 [ 270.244331][ T1] RIP: 0010:free_irq+0x59/0x70 [ 270.248951][ T1] Code: fc ff ff 48 89 c7 48 85 c0 74 14 48 8b 58 50 e8 0d 92 18 00 48 89 d8 48 8b 5d f8 c9 c3 0f 0b 31 db 48 89 d8 48 8b 5d f8 c9 c3 <0f> 0b 48 c7 80 c0 00 00 00 00 00 00 00 eb c2 0f 1f 84 00 00 00 00 [ 270.268389][ T1] RSP: 0018:ffffbb4e40187cb8 EFLAGS: 00010282 [ 270.274308][ T1] RAX: ffffa0cf0f51ce00 RBX: ffffa0d28c28b720 RCX: 0000000000000000 [ 270.282133][ T1] RDX: ffffa0cf0f51ce00 RSI: ffffa0cf00402910 RDI: ffffa0cf0f51ce00 [ 270.289961][ T1] RBP: ffffbb4e40187cc0 R08: ffffffffb4d30d20 R09: 0000000000000000 [ 270.297786][ T1] R10: 0000000000000000 R11: ffffffffb4d30d28 R12: ffffa0d288bdc5c0 [ 270.305610][ T1] R13: 00000000000001a1 R14: ffffa0d28306f150 R15: 00000000fee1dead [ 270.313438][ T1] FS: 00007fced88b8b40(0000) GS:ffffa0d66fc40000(0000) knlGS:0000000000000000 [ 270.322216][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 270.328654][ T1] CR2: 00007f30c9707188 CR3: 000000011233c004 CR4: 00000000001706e0 [ 270.336481][ T1] Call Trace: [ 270.339627][ T1] <TASK> [ 270.342426][ T1] ? show_regs+0x61/0x70 [ 270.346527][ T1] ? __warn+0x89/0x150 [ 270.350452][ T1] ? free_irq+0x59/0x70 [ 270.354465][ T1] ? report_bug+0x169/0x1a0 [ 270.358825][ T1] ? handle_bug+0x40/0x70 [ 270.363009][ T1] ? exc_invalid_op+0x18/0x70 [ 270.367542][ T1] ? asm_exc_invalid_op+0x1b/0x20 [ 270.372423][ T1] ? free_irq+0x59/0x70 [ 270.376435][ T1] ? free_irq+0x12/0x70 [ 270.380446][ T1] mlx5_irq_pool_free_irqs+0x42/0x70 [mlx5_core 1c469ba939c75ce6134781bc9a07bebee746cfe5] [ 270.390214][ T1] mlx5_irq_table_free_irqs+0x41/0x50 [mlx5_core 1c469ba939c75ce6134781bc9a07bebee746cfe5] [ 270.400069][ T1] mlx5_core_eq_free_irqs+0x2d/0x40 [mlx5_core 1c469ba939c75ce6134781bc9a07bebee746cfe5] [ 270.409748][ T1] mlx5_try_fast_unload+0x83/0x1d0 [mlx5_core 1c469ba939c75ce6134781bc9a07bebee746cfe5] [ 270.419334][ T1] shutdown+0x34/0xb0 [mlx5_core 1c469ba939c75ce6134781bc9a07bebee746cfe5] [ 270.427793][ T1] pci_device_shutdown+0x37/0x60 [ 270.432584][ T1] device_shutdown+0x152/0x240 [ 270.437204][ T1] kernel_restart+0x3a/0x90 [ 270.441564][ T1] __do_sys_reboot+0x19b/0x220 [ 270.446181][ T1] ? vfs_writev+0x9f/0x160 [ 270.450456][ T1] ? do_writev+0x62/0x120 [ 270.454641][ T1] __x64_sys_reboot+0x1b/0x20 [ 270.459173][ T1] do_syscall_64+0x34/0x80 [ 270.463445][ T1] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 270.469194][ T1] RIP: 0033:0x7fced9324dc7 [ 270.473463][ T1] Code: 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 89 fa be 69 19 12 28 bf ad de e1 fe b8 a9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 39 10 0d 00 f7 d8 64 89 02 b8 [ 270.492905][ T1] RSP: 002b:00007fff428c7d48 EFLAGS: 00000206 ORIG_RAX: 00000000000000a9 [ 270.501161][ T1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fced9324dc7 [ 270.508988][ T1] RDX: 0000000001234567 RSI: 0000000028121969 RDI: 00000000fee1dead [ 270.516814][ T1] RBP: 00007fff428c7f70 R08: 0000000000000000 R09: 0000000000000069 [ 270.524641][ T1] R10: 00007fff428c7300 R11: 0000000000000206 R12: 0000000000000000 [ 270.532466][ T1] R13: 0000000000000000 R14: 0000000000000000 R15: 00007fff428c8088 [ 270.540294][ T1] </TASK> -- Chuck Lever
