On Tue, Feb 01, 2022 at 04:31:29PM +0100, Wolfgang Walter wrote: > Hello, > > we found a regression in 5.15.17. When iwlwifi is loaded as a module and it > cannot load a firmware it crashes: > > =================================================================== > Jan 28 19:05:01 kistchen kernel: [ 5.415151] Intel(R) Wireless WiFi > driver for Linux > Jan 28 19:05:01 kistchen kernel: [ 5.425600] iwlwifi 0000:04:00.0: Direct > firmware load for iwlwifi-3160-17.ucode failed with error -2 > Jan 28 19:05:01 kistchen kernel: [ 5.425616] iwlwifi 0000:04:00.0: no > suitable firmware found! > Jan 28 19:05:01 kistchen kernel: [ 5.425704] iwlwifi 0000:04:00.0: > iwlwifi-3160-17 is required > Jan 28 19:05:01 kistchen kernel: [ 5.425786] iwlwifi 0000:04:00.0: check > git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git > Jan 28 19:05:01 kistchen kernel: [ 5.426226] general protection fault, > probably for non-canonical address 0xd8e6d895001008: 0000 [#1] PREEMPT SMP > PTI > Jan 28 19:05:01 kistchen kernel: [ 5.426324] CPU: 1 PID: 45 Comm: > kworker/1:1 Not tainted 5.15.17-aladebian64.all+1.2 #1 > Jan 28 19:05:01 kistchen kernel: [ 5.426411] Hardware name: ZOTAC > XXXXXX/XXXXXX, BIOS B301P017 04/06/2016 > Jan 28 19:05:01 kistchen kernel: [ 5.426493] Workqueue: events > request_firmware_work_func > Jan 28 19:05:01 kistchen kernel: [ 5.426587] RIP: 0010:kfree+0x61/0x170 > Jan 28 19:05:01 kistchen kernel: [ 5.426670] Code: 80 48 01 e8 0f 82 21 > 01 00 00 48 c7 c2 00 00 00 80 48 2b 15 01 f8 ee 00 48 01 d0 48 c1 e8 0c 48 > c1 e0 06 48 03 05 df f7 ee 00 <48> 8b 50 08 48 8d 4a ff 83 e2 01 48 0f 45 c1 > 48 8b 48 08 48 8d 51 > Jan 28 19:05:01 kistchen kernel: [ 5.426772] RSP: 0018:ffffa54e002b3ce8 > EFLAGS: 00010007 > Jan 28 19:05:01 kistchen kernel: [ 5.426853] RAX: 00d8e6d895001000 RBX: > 0000000000000206 RCX: 0000000000000000 > Jan 28 19:05:01 kistchen kernel: [ 5.426937] RDX: 00007425c0000000 RSI: > ffffffffc0fd6ea6 RDI: 36415f5f0004000f > Jan 28 19:05:01 kistchen kernel: [ 5.427019] RBP: 36415f5f0004000f R08: > ffffffffa80427c0 R09: ffffa54e002b3be0 > Jan 28 19:05:01 kistchen kernel: [ 5.427102] R10: 0000000000000000 R11: > 0000000000000000 R12: ffff8bdae10e6ab8 > Jan 28 19:05:01 kistchen kernel: [ 5.427184] R13: ffff8bdae10e6800 R14: > ffff8bdac256c400 R15: ffff8bdc37cb5905 > Jan 28 19:05:01 kistchen kernel: [ 5.427267] FS: 0000000000000000(0000) > GS:ffff8bdc37c80000(0000) knlGS:0000000000000000 > Jan 28 19:05:01 kistchen kernel: [ 5.427354] CS: 0010 DS: 0000 ES: 0000 > CR0: 0000000080050033 > Jan 28 19:05:01 kistchen kernel: [ 5.427446] CR2: 00007f934935c6f4 CR3: > 00000001077e2000 CR4: 00000000001006e0 > Jan 28 19:05:01 kistchen kernel: [ 5.427541] Call Trace: > Jan 28 19:05:01 kistchen kernel: [ 5.427630] <TASK> > Jan 28 19:05:01 kistchen kernel: [ 5.427727] > iwl_dealloc_ucode+0x36/0x110 [iwlwifi] > Jan 28 19:05:01 kistchen kernel: [ 5.427873] > iwl_req_fw_callback+0x2d1/0x2330 [iwlwifi] > Jan 28 19:05:01 kistchen kernel: [ 5.428006] ? ___cache_free+0x31/0x4b0 > Jan 28 19:05:01 kistchen kernel: [ 5.428108] ? > _request_firmware+0x3ff/0x780 > Jan 28 19:05:01 kistchen kernel: [ 5.428205] ? kfree+0xa9/0x170 > Jan 28 19:05:01 kistchen kernel: [ 5.428298] ? > _request_firmware+0x3ff/0x780 > Jan 28 19:05:01 kistchen kernel: [ 5.428391] > request_firmware_work_func+0x4d/0x90 > Jan 28 19:05:01 kistchen kernel: [ 5.428486] > process_one_work+0x1e8/0x3c0 > Jan 28 19:05:01 kistchen kernel: [ 5.428581] worker_thread+0x50/0x3b0 > Jan 28 19:05:01 kistchen kernel: [ 5.428672] ? > process_one_work+0x3c0/0x3c0 > Jan 28 19:05:01 kistchen kernel: [ 5.428763] kthread+0x141/0x170 > Jan 28 19:05:01 kistchen kernel: [ 5.428856] ? > set_kthread_struct+0x40/0x40 > Jan 28 19:05:01 kistchen kernel: [ 5.428948] ret_from_fork+0x22/0x30 > Jan 28 19:05:01 kistchen kernel: [ 5.429044] </TASK> > Jan 28 19:05:01 kistchen kernel: [ 5.429130] Modules linked in: > ums_realtek(+) iwlwifi(+) snd_hda_intel uas usb_storage snd_intel_dspcfg > sha512_ssse3 ttm snd_intel_sdw_acpi snd_hda_codec snd_hda_core > sha512_generic aesni_intel(+) drm_kms_helper snd_hwdep crypto_simd > intel_xhci_usb_role_switch cryptd sg roles cec snd_pcm intel_cstate > snd_timer mei_txe at24 snd iTCO_wdt rc_core cfg80211 intel_pmc_bxt pcspkr > soundcore ctr iTCO_vendor_support mei i2c_algo_bit watchdog drbg ansi_cprng > ecdh_generic(+) rfkill ecc pwm_lpss_platform pwm_lpss intel_int0002_vgpio > button drm fuse configfs ip_tables x_tables autofs4 ext4 crc32c_generic > crc16 mbcache jbd2 sd_mod t10_pi crc_t10dif crct10dif_generic ahci libahci > xhci_pci sdhci_pci cqhci crct10dif_pclmul crct10dif_common libata r8169 > i2c_i801 crc32_pclmul xhci_hcd realtek mdio_devres crc32c_intel i2c_smbus > lpc_ich sdhci libphy scsi_mod usbcore usb_common scsi_common mmc_core fan > i2c_hid_acpi i2c_hid video hid > Jan 28 19:05:01 kistchen kernel: [ 5.429595] ---[ end trace > aea59d2f4abcc392 ]--- > Jan 28 19:05:01 kistchen kernel: [ 5.429688] RIP: 0010:kfree+0x61/0x170 > Jan 28 19:05:01 kistchen kernel: [ 5.429783] Code: 80 48 01 e8 0f 82 21 > 01 00 00 48 c7 c2 00 00 00 80 48 2b 15 01 f8 ee 00 48 01 d0 48 c1 e8 0c 48 > c1 e0 06 48 03 05 df f7 ee 00 <48> 8b 50 08 48 8d 4a ff 83 e2 01 48 0f 45 c1 > 48 8b 48 08 48 8d 51 > Jan 28 19:05:01 kistchen kernel: [ 5.429920] RSP: 0018:ffffa54e002b3ce8 > EFLAGS: 00010007 > Jan 28 19:05:01 kistchen kernel: [ 5.430012] RAX: 00d8e6d895001000 RBX: > 0000000000000206 RCX: 0000000000000000 > Jan 28 19:05:01 kistchen kernel: [ 5.430107] RDX: 00007425c0000000 RSI: > ffffffffc0fd6ea6 RDI: 36415f5f0004000f > Jan 28 19:05:01 kistchen kernel: [ 5.430201] RBP: 36415f5f0004000f R08: > ffffffffa80427c0 R09: ffffa54e002b3be0 > Jan 28 19:05:01 kistchen kernel: [ 5.430296] R10: 0000000000000000 R11: > 0000000000000000 R12: ffff8bdae10e6ab8 > Jan 28 19:05:01 kistchen kernel: [ 5.430392] R13: ffff8bdae10e6800 R14: > ffff8bdac256c400 R15: ffff8bdc37cb5905 > Jan 28 19:05:01 kistchen kernel: [ 5.430489] FS: 0000000000000000(0000) > GS:ffff8bdc37c80000(0000) knlGS:0000000000000000 > Jan 28 19:05:01 kistchen kernel: [ 5.430603] CS: 0010 DS: 0000 ES: 0000 > CR0: 0000000080050033 > Jan 28 19:05:01 kistchen kernel: [ 5.430700] CR2: 00007f934935c6f4 CR3: > 00000001077e2000 CR4: 00000000001006e0 > =================================================================== > > Providing a firmware file (or blacklisting iwlwifi of course) fixes ist. > 5.15.16 does not crash. Can you do 'git bisect' to track down the offending commit? And does 5.16.y work for you? How about 5.17-rc2? thanks, greg k-h
