R13: 00007f357ffe6038 R14: 00007f357ffe5fa0 R15: 00007ffc44643818 ===================================================== BUG: KMSAN: uninit-value in i2c_smbus_xfer_emulated drivers/i2c/i2c-core-smbus.c:503 [inline] BUG: KMSAN: uninit-value in __i2c_smbus_xfer+0x2455/0x2eb0 drivers/i2c/i2c-core-smbus.c:608 i2c_smbus_xfer_emulated drivers/i2c/i2c-core-smbus.c:503 [inline] __i2c_smbus_xfer+0x2455/0x2eb0 drivers/i2c/i2c-core-smbus.c:608 i2c_smbus_xfer+0x2cd/0x460 drivers/i2c/i2c-core-smbus.c:546 i2cdev_ioctl_smbus+0x4a1/0x660 drivers/i2c/i2c-dev.c:389 i2cdev_ioctl+0xa14/0xf40 drivers/i2c/i2c-dev.c:478 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0x23c/0x400 fs/ioctl.c:583 __x64_sys_ioctl+0x97/0xe0 fs/ioctl.c:583 x64_sys_call+0x18a7/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd3/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Local variable msgbuf1.i created at: i2c_smbus_xfer_emulated drivers/i2c/i2c-core-smbus.c:335 [inline] __i2c_smbus_xfer+0x830/0x2eb0 drivers/i2c/i2c-core-smbus.c:608 i2c_smbus_xfer+0x2cd/0x460 drivers/i2c/i2c-core-smbus.c:546 CPU: 1 UID: 0 PID: 10151 Comm: syz.2.735 Tainted: G L syzkaller #0 PREEMPT(none) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 =====================================================