XPost: linux.debian.bugs.dist   
   From: jspricke@debian.org   
      
   Package: src:linux   
   Version: 6.17.8-1   
   Severity: normal   
      
   First time booting into 6.17.8-1 and first time I see UBSAN in my logs:   
      
   [Nov21 08:31] Booting Linux on physical CPU 0x100   
   [  +0,012977] ------------[ cut here ]------------   
   [  +0,000017] UBSAN: array-index-out-of-bounds in /build/reprodu   
   ible-path/linux-6.17.8/drivers/clk/samsung/clk-exynos-clkout.c:178:18   
   [  +0,000038] index 0 is out of range for type 'clk_hw *[*]'   
   [  +0,000025] CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6   
   17.8+deb14-armmp #1 NONE  Debian 6.17.8-1   
   [  +0,000018] Hardware name: Samsung Exynos (Flattened Device Tree)   
   [  +0,000007] Call trace:   
   [  +0,000009]  unwind_backtrace from show_stack+0x18/0x1c   
   [  +0,000042]  show_stack from dump_stack_lvl+0x54/0x68   
   [  +0,000036]  dump_stack_lvl from ubsan_epilogue+0x8/0x34   
   [  +0,000025]  ubsan_epilogue from __ubsan_handle_out_of_bounds+0x88/0x8c   
   [  +0,000024]  __ubsan_handle_out_of_bounds from exynos_clkout_p   
   obe+0x38c/0x428   
   [  +0,000029]  exynos_clkout_probe from platform_probe+0x64/0x98   
   [  +0,000034]  platform_probe from really_probe+0xd8/0x3ac   
   [  +0,000031]  really_probe from __driver_probe_device+0x94/0x1dc   
   [  +0,000027]  __driver_probe_device from driver_probe_device+0x3c/0xd8   
   [  +0,000027]  driver_probe_device from __driver_attach+0xd8/0x1d8   
   [  +0,000028]  __driver_attach from bus_for_each_dev+0x84/0xd4   
   [  +0,000026]  bus_for_each_dev from bus_add_driver+0xf4/0x218   
   [  +0,000023]  bus_add_driver from driver_register+0x8c/0x140   
   [  +0,000027]  driver_register from do_one_initcall+0x50/0x24c   
   [  +0,000023]  do_one_initcall from kernel_init_freeable+0x288/0x2fc   
   [  +0,000022]  kernel_init_freeable from kernel_init+0x24/0x140   
   [  +0,000022]  kernel_init from ret_from_fork+0x14/0x28   
   [  +0,000015] Exception stack(0xf0835fb0 to 0xf0835ff8)   
   [  +0,000012] 5fa0:                                     00000000 00000000   
   00000000 00000000   
   [  +0,000011] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000   
   00000000 00000000   
   [  +0,000009] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000   
   [  +0,000007] ---[ end trace ]---   
   [  +0,000226] ------------[ cut here ]------------   
   [  +0,000012] UBSAN: array-index-out-of-bounds in /build/reprodu   
   ible-path/linux-6.17.8/drivers/clk/samsung/clk-exynos-clkout.c:183:29   
   [  +0,000032] index 0 is out of range for type 'clk_hw *[*]'   
   [  +0,000021] CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6   
   17.8+deb14-armmp #1 NONE  Debian 6.17.8-1   
   [  +0,000014] Hardware name: Samsung Exynos (Flattened Device Tree)   
   [  +0,000006] Call trace:   
   [  +0,000006]  unwind_backtrace from show_stack+0x18/0x1c   
   [  +0,000032]  show_stack from dump_stack_lvl+0x54/0x68   
   [  +0,000033]  dump_stack_lvl from ubsan_epilogue+0x8/0x34   
   [  +0,000023]  ubsan_epilogue from __ubsan_handle_out_of_bounds+0x88/0x8c   
   [  +0,000020]  __ubsan_handle_out_of_bounds from exynos_clkout_p   
   obe+0x354/0x428   
   [  +0,000024]  exynos_clkout_probe from platform_probe+0x64/0x98   
   [  +0,000031]  platform_probe from really_probe+0xd8/0x3ac   
   [  +0,000031]  really_probe from __driver_probe_device+0x94/0x1dc   
   [  +0,000031]  __driver_probe_device from driver_probe_device+0x3c/0xd8   
   [  +0,000028]  driver_probe_device from __driver_attach+0xd8/0x1d8   
   [  +0,000027]  __driver_attach from bus_for_each_dev+0x84/0xd4   
   [  +0,000025]  bus_for_each_dev from bus_add_driver+0xf4/0x218   
   [  +0,000023]  bus_add_driver from driver_register+0x8c/0x140   
   [  +0,000027]  driver_register from do_one_initcall+0x50/0x24c   
   [  +0,000022]  do_one_initcall from kernel_init_freeable+0x288/0x2fc   
   [  +0,000019]  kernel_init_freeable from kernel_init+0x24/0x140   
   [  +0,000020]  kernel_init from ret_from_fork+0x14/0x28   
   [  +0,000016] Exception stack(0xf0835fb0 to 0xf0835ff8)   
   [  +0,000010] 5fa0:                                     00000000 00000000   
   00000000 00000000   
   [  +0,000009] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000   
   00000000 00000000   
   [  +0,000009] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000   
   [  +0,000098] ---[ end trace ]---   
      
      
   -- Package-specific info:   
   ** Version:   
   Linux version 6.17.8+deb14-armmp (debian-kernel@lists.debian.org)   
   (arm-linux-gnueabihf-gcc-15 (Debian 15.2.0-8) 15.2.0, GNU ld (GNU Binutils for   
   Debian) 2.45) #1 SMP Debian 6.17.8-1 (2025-11-15)   
      
   ** Command line:   
   root=LABEL=mmcroot rw quiet   
      
   ** Not tainted   
      
   ** Kernel log:   
   Unable to read kernel log; any relevant messages should be attached   
      
   ** Model information   
   Hardware	: Samsung Exynos (Flattened Device Tree)   
   Revision	: 0000   
   Device Tree model: Hardkernel Odroid XU4   
      
   ** Configuration for modprobe:   
   blacklist arkfb   
   blacklist aty128fb   
   blacklist atyfb   
   blacklist radeonfb   
   blacklist cirrusfb   
   blacklist cyber2000fb   
   blacklist kyrofb   
   blacklist matroxfb_base   
   blacklist mb862xxfb   
   blacklist neofb   
   blacklist pm2fb   
   blacklist pm3fb   
   blacklist s3fb   
   blacklist savagefb   
   blacklist sisfb   
   blacklist tdfxfb   
   blacklist tridentfb   
   blacklist vt8623fb   
   options snd_pcsp index=-2   
   options cx88_alsa index=-2   
   options snd_atiixp_modem index=-2   
   options snd_intel8x0m index=-2   
   options snd_via82xx_modem index=-2   
   options bonding max_bonds=0   
   options dummy numdummies=0   
   options ifb numifbs=0   
      
   ** Loaded modules:   
   tls   
   aes_arm_bs   
   aes_arm   
   dm_crypt   
   dm_mod   
   r8153_ecm   
   cdc_ether   
   usbnet   
   snd_soc_hdmi_codec   
   snd_soc_core   
   snd_compress   
   snd_pcm_dmaengine   
   snd_pcm   
   snd_timer   
   snd   
   r8152   
   soundcore   
   mii   
   exynosdrm   
   libphy   
   analogix_dp   
   mdio_bus   
   samsung_dsim   
   drm_display_helper   
   cec   
   rc_core   
   drm_client_lib   
   exynos_adc   
   industrialio   
   panfrost   
   gpu_sched   
   drm_shmem_helper   
   drm_kms_helper   
   exynos_trng   
   leds_pwm   
   cpufreq_dt   
   evdev   
   cfg80211   
   rfkill   
   binfmt_misc   
   drm   
   configfs   
   nfnetlink   
   ext4   
   crc16   
   mbcache   
   jbd2   
   crc32c_cryptoapi   
   xhci_plat_hcd   
   xhci_hcd   
   dwc3   
   roles   
   udc_core   
   s2mps11   
   clk_s2mps11   
   dwc3_exynos   
   ehci_exynos   
   ohci_exynos   
   ehci_hcd   
   ohci_hcd   
   dw_mmc_exynos   
   i2c_exynos5   
   pwm_samsung   
   phy_exynos5_usbdrd   
   dw_mmc_pltfm   
   usbcore   
   dw_mmc   
   typec   
   phy_exynos_usb2   
   phy_exynos_mipi_video   
   s3c2410_wdt   
   phy_exynos_dp_video   
   pwm_fan   
   autofs4   
      
   ** Network status:   
   *** IP interfaces and addresses:   
      
   [continued in next message]   
      
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