tpm: spi: do not call blocking ops when !TASK_RUNNING; during shutdown
Stefan Wahren <[email protected]>
| Newsgroups | org.kernel.vger.linux-integrity,dev.linux.lists.imx,org.infradead.lists.linux-arm-kernel |
|---|---|
| Message-ID | <[email protected]> |
Hi, we use a custom i.MX93 board, which based on Phytec Phycore i.MX93 with a TPM connected via SPI. If I enable CONFIG_DEBUG_ATOMIC_SLEEP=y in our kernel config with mainline kernel 6.18.23 and reboot our board, I will get the following warning: [ 43.287416] do not call blocking ops when !TASK_RUNNING; state=1 set at [<000000005a2107f3>] prepare_to_wait_event+0x54/0x14c [ 43.299009] WARNING: CPU: 0 PID: 1 at kernel/sched/core.c:8857 __might_sleep+0x74/0x7c [ 43.306920] Modules linked in: polyval_ce flexcan rtc_rv3028 can_dev mse102x phy_can_transceiver fuse autofs4 [ 43.316838] CPU: 0 UID: 0 PID: 1 Comm: systemd-shutdow Not tainted 6.18.23-00002-g626a194342f0 #2 PREEMPT [ 43.326471] Hardware name: chargebyte Charge SOM Evaluation Kit (DT) [ 43.332807] pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 43.339757] pc : __might_sleep+0x74/0x7c [ 43.343675] lr : __might_sleep+0x74/0x7c [ 43.347592] sp : ffff800081aab720 [ 43.350894] x29: ffff800081aab720 x28: 0000000000000080 x27: ffff000000235880 [ 43.358018] x26: ffff800081897000 x25: 0000000000000018 x24: 0000000000000000 [ 43.365142] x23: ffff800081aab907 x22: 0000000000000000 x21: 0000000000000080 [ 43.372266] x20: 000000000000010f x19: ffff80008131cd00 x18: 0000000000000001 [ 43.379390] x17: 0000000000000000 x16: 000000000017d600 x15: ffff00003fda4680 [ 43.386514] x14: 0000000000017e01 x13: 0000000000000209 x12: 0000000000000000 [ 43.393638] x11: 00000000000000c0 x10: 0000000000000950 x9 : ffff800081aab5a0 [ 43.400762] x8 : ffff0000000d89b0 x7 : ffff00003fda3f00 x6 : 000000013417d29a [ 43.407886] x5 : 0000000000000000 x4 : 0000000000000002 x3 : 0000000000000010 [ 43.415010] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000000d8000 [ 43.422135] Call trace: [ 43.424570] __might_sleep+0x74/0x7c (P) [ 43.428487] mutex_lock+0x24/0x80 [ 43.431797] spi_bus_lock+0x20/0x50 [ 43.435281] tpm_tis_spi_transfer_full+0x70/0x2c4 [ 43.439979] tpm_tis_spi_read_bytes+0x3c/0x48 [ 43.444321] tpm_tis_status+0x58/0xf8 [ 43.447978] wait_for_tpm_stat_cond+0x30/0x90 [ 43.452329] wait_for_tpm_stat+0x1cc/0x2e0 [ 43.456419] tpm_tis_send_data+0xdc/0x334 [ 43.460423] tpm_tis_send_main+0x74/0x160 [ 43.464427] tpm_tis_send+0xd4/0x13c [ 43.467998] tpm_transmit+0xc4/0x3c4 [ 43.471569] tpm_transmit_cmd+0x38/0xd4 [ 43.475399] tpm2_shutdown+0x6c/0xa4 [ 43.478970] tpm_class_shutdown+0x60/0x88 [ 43.482974] device_shutdown+0x130/0x25c [ 43.486891] kernel_restart+0x44/0xa4 [ 43.490549] __do_sys_reboot+0x114/0x254 [ 43.494466] __arm64_sys_reboot+0x24/0x30 [ 43.498470] invoke_syscall+0x48/0x10c [ 43.502214] el0_svc_common.constprop.0+0x40/0xe0 [ 43.506911] do_el0_svc+0x1c/0x28 [ 43.510222] el0_svc+0x34/0xec [ 43.513273] el0t_64_sync_handler+0xa0/0xe4 [ 43.517441] el0t_64_sync+0x198/0x19c Best regards