kernel profiling enabled (shift: 1000000) ================================================================================ UBSAN: Undefined behaviour in kernel/profile.c:110:31 shift exponent 1000000 is too large for 64-bit type 'long int' CPU: 1 PID: 10541 Comm: syz-executor.0 Not tainted 5.3.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x86/0xca lib/dump_stack.c:113 ubsan_epilogue+0xd/0x3a lib/ubsan.c:158 __ubsan_handle_shift_out_of_bounds.cold.14+0x21/0x68 lib/ubsan.c:404 profile_init+0x4b/0x100 kernel/profile.c:110 profiling_store+0x50/0x90 kernel/ksysfs.c:80 kobj_attr_store+0x36/0x70 lib/kobject.c:842 sysfs_kf_write+0xfd/0x150 fs/sysfs/file.c:138 kernfs_fop_write+0x255/0x410 fs/kernfs/file.c:315 __vfs_write+0x5e/0x110 fs/read_write.c:494 vfs_write+0x18a/0x520 fs/read_write.c:558 ksys_write+0x105/0x220 fs/read_write.c:611 __do_sys_write fs/read_write.c:623 [inline] __se_sys_write fs/read_write.c:620 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:620 do_syscall_64+0xa3/0x4b0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665d9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6592c4f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 00000000ffffff82 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffc4978196f R14: 00007f6592c4f300 R15: 0000000000022000 ================================================================================